Post Construction BMPs Cost Analysis


POST CONSTRUCTION BMP's COST ANALYSIS
MAY 5. 1992
Prepared For:
Environmental Protection Agency
401 M Street, SW
Washington, D.C. 20460
Prepared by:
WOODWARD-CLYDE FEDERAL SERVICES
One Church Street, Suite 700
Rockville, MD 20850
(301) 309-0800

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POST CONSTRUCTION BMP's COST ANALYSIS
MAY 5, 1992
Prepared For:
Environmental Protection Agency
401 M Street, SW
Washington, D.C. 20460
Prepared by:
WOODWARD-CLYDE FEDERAL SERVICES
One Church Street, Suite 700
Rockville, MD 20850
(301) 309-0800
LIBRARY /
EPA REGION 4
9th Floor J
100 Alabama St. S.W.
Atlanta, GA 30303

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POST-CONSTRUCTION BMP's COST ANALYSIS
1.0 INTRODUCTION
This report describes cost analyses of best management practices (BMPs) that could be used to
achieve the post-construction management measure presented in the "Management Measures for
Sources of Nonpoint Pollution in Coastal Waters." The post-construction management measure
has two performance requirements:
1. To control the 2-year, 24-hour peak rainfall; and
2. To achieve 80% removal of total suspended solids (TSS) from the average
storm.
In the cost analyses, two BMPs were examined to achieve this management measure: extended
distention dry ponds and infiltration basins. The purpose of the cost analyses is to provide data
to compare to current baseline post-construction costs for various locations throughout the coastal
region. These comparisons will serve as a basis for judging the economic achievability of the
management measure.
2.0 TECHNICAL APPROACH
Fifty-six hypothetical scenarios were developed for this analysis. For each scenario, 2 BMPs
were considered:
• Extended Detention (ED) Dry Pond; and
• Infiltration Basin.
It is realized that many other practices (e.g. extended detention wetponds or constructed
wetlands) could be used to achieve the management measure. However, to keep the number of
design scenarios to a minimum, ED dry ponds (detention) and infiltration basins (retention) were
the only BMPs considered. It should be noted that systems of BMPs along with careful site
layout can enhance the overall systems performance and could lead to reduced costs for the
detention or retention basins needed to achieve the management measure.
For design, varying site conditions were examined based on the coastal region, rainfall type,
land use, development size, and soil type. To represent various region's rainfall in the United
States, the Soil Conservation Service (SCS) developed four synthetic 24-hour rainfall
distributions (I, IA, II, III) from available National Weather Service duration-frequency data or
80040000H. \WP\CM ATR55. N EW
1
May 4, 1992

-------
local storm data (SCS, 1986). These rainfall types, along with land use, development size, and
soil type were the design parameter that varied for the different scenarios. The following is a
list of the different design parameters used in the analyses:
Coastal Regions and Rainfall Types:
•	GL - Great Lakes and Northeast (Type II rainfall);
•	SE - Gulf Coast, Southeast and Mid-Atlantic Coast (Type III
rainfall);
•	NW - Pacific Northwest (Type IA rainfall); and
•	SW - Pacific Southwest (Type I rainfall).
Land Use:
•	SF - Single Family (40% impervious cover)
•	MF - Multi-Family (60% impervious cover)
•	C - Commercial (80% impervious cover)
Development Size:
•	10 acre
•	100 acres
Soil Type:
•	Pervious (SCS Soil Type B)
•	Impervious (SCS Soil Type C)
In addition, in the Gulf Coast and the Pacific Northwest, a 1-acre Gas Station/Fast Food Lot
(9:5% impervious cover) and a 1-acre Single Family Lot (20% impervious cover) on both
pervious and impervious soil types were examined.
To achieve the management measure, the practice must reduce post-development peak runoff
rates from the 2-year, 24-hour rainfall to pre-development levels and remove 80% of TSS from
the average storm runoff. In order to determine the total size of the detention or retention basin
required, separate designs were prepared to determine the storage volume required for peak
runoff rate control and removal of TSS. The two storage volumes were then added together to
80040000H: \WP\C M ATR5 5. N E W
2
May 4, 1992

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obtain the total storage volume required. This is a conservative approach to determining the
total volume required, but the approach is used by some agencies to provide a factor of safety
in their designs.
A summary of the design analyses and cost are presented in Tables 1, 2, and 3.
It should be noted that infiltration basins are only recommended for pervious soils and drainage
ares less than 50 acres. Consequently, designs were only developed for pervious soils and for
treating runoff from only 50 acres of the 100-acre sites. The total storage for the infiltration
basins presented in Tables 1 and 3 are for two basins each treating runoff from 50 acres.
Additionally, the potential of the infiltration basin for impacting groundwater was not
considered.
For the ED dry ponds, the cost does not consider using the pond as a sediment basin for
sediment control during construction. It is estimated that 10 to 20% of the ED dry ponds on 10-
acre sites and as high as 50% of the ponds on 100-acres would also serve as sediment basins
during construction. The costs for installing sediment basins on 10- and 100-acre sites are
estimated to be $9,000 and $36,000 respectively. Consequently, some cost savings can be
realized when the basin is used for both sediment control and post-construction water quality
treatment.
The following sections discuss the methods that were used in sizing the infiltration basins and
the ED dry ponds. In general, the SCS's method presented in TR-55 (SCS, 1986) was used to
determine the storage for controlling the peak runoff rate and the P-8 Model (or Urban
Catchment Model) (Palmstrom and Walker, 1990) was used to determine the storage for 80%
removal of TSS.
2.1 Design for Control of 2-year, 24-hour Rainfall Peak Runoff
The SCS TR-55 graphical method (SCS, 1986) was used to determine the required volume to
control the peak discharge generated from a 2-year, 24-hour rainfall because it provides
simplified procedures to calculate the effects of changed land use on runoff volume in the
different coastal regions. It calculates the approximate storage volume required to contain post-
development peak discharge, such that it does not exceed the pre-development peak discharge
rate.
The peak discharge rate for the 2-year, 24-hour rainfall was calculated based on the following
assumptions:
80040000H:\WP\CMATR55.NEW
3
May 5, 1992

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Table la: Vohac CoapihtioM - Coulrictioa BMP*» for Urtna Dcwbpacit (Ei»tCo»it)
No.
Type of
Raiabll:
2yr.24Hr.
RtiaUt, (in)'1'
Propffty
Size, (cres)
Hydrolofb
Cooduiooi
Development Types,
(9& impervious)
Pre-Dev.
Peak{c(i) (or
2>r.-24hr.
Storms.
(SCSTR55)
Po*-Dev.
Pcak(c(s) for
2jr.-24br.
Storms.
(SCS TR55)
2yr.-24hr
Raiobll Peak
COUTol
Scenario A: Dry PondswitbExtended Detention
feeoarioB: Itfilcration Basins ^
80% TSS Removal
for Averse Storm
Id tbe Ref ion #
VoL,
Vc- Va+Vb
(K.fL)
Rquired
(*rej)
TSS RciOUVSt
Avf. Rainfall io
tbcRcjioa #
v-oatroi VoL
Vd- Va+Vi
Area
Required
(ktcs)

"wr*-
Type IA
Type II
Type III
©w j = 2_*
NW, 1-3.0
OL,i-3.0
SE, 1-4.5
1
10 k.. or
100 *c.
?
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T^blc lb: Volume Computation* — Com true ti on BMP*i for Urban Development. (Wot Coa»t)
Na
Type of
Rainfall:
2yr. 24 Hr.
Rainfall (in)(1)
Property
Size, (acres)
Hytfrolojc
Conditions
Development Types,
(% impervious)
Pre-Dev.
Peakfcfi) br
2yr.-24hr.
Scrms.
(SCS TR55)
Post-Dev.
Peak(c£s)fer
2yr.-24hr.
Storms.
(SCSTR55)
2yr.-24hr
Raiofsll Peak
control
Sceoarb A: Dryfonds witbExtendedDeuntbn
Sceoaro B: Irflttrsooo Basios(,)
B0% TSS Removal
for Average Storm
Contm 1 ^>L.
Ve* Va+Vb
Area
Required
(acres)
133 fvcmovsi
Avf, Rainfall in
tbeRegba. #
Conoc vol
Vd» V»+V1
(ac.ft)
Area
Roquired
(acres)

TV"
-it"
TypelA
Type 11
T*pe III
NW.i-3.0
OL. 1*3.0
SE, 1*4,5
1 *c~,
10 ac., or
100*.
PcrviousOS(95ft)
ao3
a 65
an
a 06
an
aos
ao2
a 13
ao5
30


lac.,
Impervious

an
0.68
0.09
0.06
ais
(L04
N/A
-
-
31


lac.,
Pervious
lac. SF(20%)
ao3
ao7
0,02
aoi
ao3
aoi
• aow
0.024
aoi
32


lie.
Impervious

ail
a2i
ao2
0.01
ao3
aoi
N/A
-
.
33
TypelA
NW,i*3 SJ
10 k.
Pervious
SF(40%)
a3
L8
035
a24
a59
an
aos
a43
ai6
34



Impervious

1.0
2.9
ajo
a 24
as4
ais
N/A
-
-
35



Pervious
MF(60%)
a3
18
053
a 36
aw
0.25
ai2
a65
025
36



Impervious

1.0
4.3
057
a 36
a93
a27
N/A
-
-
37



Pervious
Comm(80Sfe)
a3
5.1
a 83
a48
LJl
a37
ais
a9e
aj7
38



Impervious

1.0
5.6
073
a48
L21
a35
N/A
-
-
39
TypelA
NW, I *3.0
100 c.
Pervious
SF(40%)
2.6
13.7
3.24
139
5.63
L61
tt76
4.00
L52
40



Impervious

92
25.1
180
139
5.19
1.48
N/A
-
-
41



Pervious
MF(60*)
16
24.1
5.30
3.58
8.88
154
L16
6.46
146
42



Impervious

9.2
38.5
5.38
3.58
a96
156
N/A
-
-
43



Pervious
Comm(60%)
16
4&2
8.32
4.78
13,1
3.74
L54
9.86
3.75
44



Impervious

9.2
5as
7.32
<78
121
3.46
N/A
-
-
45
Type I
SW,|*15
10 sc.
Pervious
SF(40%)
a2
13
015
tt27
a52
ais
ao9
0.34
ai3
46



Impervious

1.2
4.8
027
0i27
a54
ais
N/A
-
-
47



Pervious
MF(60*)
0i2
5.7
a 46
0.41
a87
azs
an
a59
0:22
48



Impervious

1.2
7.6
049
a41
09
a 26
N/A
-
-
49



Pervious
Coom(80%)
0.2
1L7
a 63
a54
L17
a33
ais
0.81
a3i
SO



Impervious

1.2
14.0
0.75
as4
1.29
0.37
N/A
-
-
51
Type I
SW, i*15
100 k.
Pervious
SF(40%)
1.5
15.9
ISO
172
5.22
L«9
ass
3.38
1.29
52



Impervious

10.5
318
125
172
4.97
L42
N/A
-
-
53



Pervious
MF(60%)
\ 5
37.8
4.58
408
8.66
147
132
5.90
124
54



Impervious

10.5
514
4.43
4.08
8.51
143
N/A
-
-
55



Pervbuj
Comm(80%)
1.5
77.2
6.24
5.44
11.68
334
1.76
8.00
3.04
56



Impervious

10.5
917
7.34
5 44
1178
3.55
N/A
-
-
(1)	OL«Oreat Lakes aod NortbeastCoast
SE^}ulf,So utheut and Mid-Adaotr Couti
NW»Pacific Nor ir»ai(NortliofSaa Francisco)
SW*SoutbwestCoast(Southof Sao Franc ico)
(2)	FF^S*FastFoodOasStati)o
SF"SlofleF«mily
MF-MJti-F»mily
Co mm Commercial
(3)	3.5 ftDdifoDepth forDry ft)D
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Tabic 2a: Dry Pond Co»t Companion for Port—Co rat ruction BMP'i for Urban De>"ek)pment. (Ba»t Co ait)
No.
T)p«o<
Ran fa It
2yr.24Hr.
Ran Call, (i»)a)
Prepesy
Sue,(»cr«i)
H)4»b|ic
Conditio I
Develop a est Tjpea,
(% inperwg i) O
Coa»ml<\f 2 yr 2* r Ptsh O: *y
Coatiolot 2yr. 24hoarPeak A 40%TSS Removal

Tjpel
T)p«IA
Typtll
T)pein
S W, i-2.5
NW, i- 3.0
OL, 1-3.0
SE, 1-4.5
1 ac.,
10 ac.,o r
100 ac.
P«rvp8»)
MF(60%)
Co aa(80%}
Coattol
Volu ae
Uart Cotf
(Vcf)
CoiMncxoa
Com
PllBBO J A
Dtaja Cb«
O)
Total
Co it
AreaLort
(acrti)
(6)
Mabu
Co a ($/yr)
<<>
Coatiol
VoL
(»«- ft)
Ua it Co*
(Vet)
Coaitactoi
Cotf
PtiflofajA
D«i|0 Cbtt
0)
Total
Co it
AreaLott
(¦«*•)
(6)
MabL
Com
<$V)
(»
1
Tjp.IH
SE, i-4.5
1 »«•,
PttVDII
FF/OS(95%)
0.17
1.12
$4,294
$829
$9,12J
0.05
$249
0 27
0.46
$10,115
$1,011
$11,126
0.04
$506
2


1 ac..
lapervtoui

0.14
1.23
$7,501
$750
$8,251
0.04
$225
0.24
0.91
$9,514
$951
$10,465
0.07
$476
3


lac.,
PcrvDif
lac. SF(20%)
0.04
2.5
$4,356
$436
$4,792
0.01
$131
0.06
2
$5,227
$523
$5,750
0.02
$261
4


1 ae.,
Inpcrvfoai

0.04
2.5
$4,356
$436
$4,792
0.01
$131
0.06
2
$5,227
$523
$5,750
0.02
$261
5
T»«Ut
SE, t- 4,5
10 ac.
Perveti
i F(40*)
0,51
0.56
$14,148
$1,415
$15,563
0.17
$424
l.OO
0.43
$14,731
$1,473
$20,604
0.29
$937
6



lnptrvbu

0.63
0.55
$15,094
$1,509
$16,603
0.18
$453
1.05
0.42
$19,210
$1,921
$21,131
0.30
$960
7



Ptrmii
MF(60%)
1.00
0.43
$11,731
$1,873
$20,604
0.29
$562
1.63
0.32
$22,721
$2,272
$24,993
0.47
$1,136
1



InpcrvBoi

0.48
0.46
$17,633
$1,763
$19,396
0.25
$529
1.51
0.33
$21,706
$2,171
$23,477
0.43
$1,045
9



Pernios i
Co a o(0O%)
1.39
0.35
$21,192
$2,119
$23,311
0.40
$636
123
0.27
$26,227
$2,623
$24,450
0.64
$1,311
to



Inpi»

\3.30
0.1
$57,935
$5,793
$63,728
3.40
$1,734
21.66
0.07
$66,046
$6,605
$72,650
6.19
$3,302
16



Inpervfooi

11.09
0.11
$53,091
$5,309
$54,400
3.17
$1,593
19.44
0.04
$67,745
$6,774
$74,519
5.56
$3,387
17
T»«H
OL, 1-3.0
10 ae.
Pervbsi
5 F(40%)
0.42
0.65
$11,892
$1,189
$ 13,08 >
0.12
$357
0.74
0.5
$16,117
$1,612
$17,729
0.21
$406
It



Ioptrvioui

0.31
0.7
$11,587
$1,159
$12,746
0,11
$348
0.70
0.51
$15,551
$1,555
$17,106
0.20
$778
19



Ptrvuot
MF(60%)
0.54
0.56
$14,14ft
$1,415
$15,563
0.17
$424
1.06
0.42
$19,393
$1,939
$21,332
0.31
$970
20





0.65
0.55
$15,573
$1,557
$17,130
0,19
$467
1.13
0.4
$19,649
$1,969
$11,658
0.33
$944
21



PtrVDO*
2x> b m(S0%)
0.91
0.45
$17,838
$1,784
$19,622
0.26
$535
1.55
0.33
$22,241
$2,224
$24,509
0.44
$1,114
22



In^ervfeai

0.90
0.45
$17,642
$1,764
$19,406
0 26
$529
1.54
0.33
$22,137
$2,214
$24,351
0.44
$1,107
w
Tjp.ll
OL, i" 3.0
100 ac.
Pervcvi
;F(40%)
3 83
0.19
$31,699
$3,170
$34,864
1.09
$951
7.05
0.14
$42,994
$4,299
$47,293
101
$2,150
24



lapervioBi

3.14
0.22
$30,091
$3,009
$33,100
090
$903
6.36
0.15
$41,556
$4,156
$45,712
1.42
$2,074
25



Ptrv»o»
|MF(60*.)
5 73
0.16
139,936
$3,994
$43,929
1.64
$1,194
10.55
0.11
$50,551
$5,055
$55,607
3.02
$2,528
26



Isperwoi

5.3S
0.17
$39,(40
$3,944
$43,824
1.54
$1,195
10.20
0.11
$44,474
$4,447
$53,762
192
$1444
27



PtfVCBI
Cobb(80%)
9.15
0.12
$47,829
$4,783
$52,612
2.61
$1,435
15.57
0.09
$61,041
$6,104
$67,145
4.44
$3,052
24



l^ervfcoi

4 05
0.13
$45,566
$4,559
$50,144
130
$1,364
14.47
0.09
556,728
$5,673
$61401
4.13
$1436
(1) OL«OrtatLak«i and Nortiea* Coatf	(2) FF/OS"F»< Food/Oai Suidb	(3) Plain fe| ted Dcnge Co it • 10%of CbartBdioa
SB"Oolf.So«6«iM ad Md-Atlantic Co a««	' SNSiajle Faaily	(4) AoDoal Maateoaace Girt ¦ 3% of Coaitactba Cotf
NW- Pacific Noflfewtrt (North ofSaa FraacUoo)	MF« Mihi- Faaily	(5) Aoaaal Mas lea aace Cbit Co it - 5% of Coaftatctioa
SW-Soatbwetf Coat $oathof Sa Frmclwo)	Co an-Co naeicial	(6) Averif< Poad Deptt - 3 5ft
det_iw2.wk3
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Tabic 2b: Dry Pond Cort Comparison for Post - Coo ri ruction BMP'i for Urban Development. (Wert Coat)
No.
Tjptof
Ranfalb
2yr.24Hr.
Rao till,
Ptopctty
Sue, (*crt»)
Hjdcbjic
Coodhbai
D)
S F(40%)
MF(60*)
Co a m(80%l
Coatiol
Vo hi n<
('o- ft)
Ui# Co it
(j/<0
COfl«tOiCtDB
Cost
Plaaaa |&
De«fo Cb tf
(3)
Total
Co it
ArcaLotf
(acrei)
«>
Maat
Cotf(Sfyr)
(')
CoBttol
VoL
(«€- ft)
UnrtCort
(S/cf)
Coaituctba
Co it
Ptiaant*
DtifB Cbtt
O)
Total
Co a
ArcaLoit
(aerti)
<«>
Mabt.
Cost
($/yr)
29
Tjp«IA
NW,i-),0
1 •«.,
P«rvD««
FF/OS(95*)
0.11
1.4
$6,708
$671
$7,379
0.03
$201
0.17
1.1
$8,146
$815
$8,960
0.05
$407
30


1 ac.,
lapcrwai

009
1.6
$6,273
$627
$6,900
0.03
$188
0.1S
1 15
$7,514
$751
$8,266
0.05
$376
31


1 ac^
Pervcai
I ac.SF(20%)
0.02
3.1
$3,311
$331
$3,642
0.01
$99
0 03
3
$3,920
$392
$4,312
0.01
$196
32


U<.,
Imp«rvio«»

0.02
3.1
$3,311
$331
$3,642
0 01
$99
O.OJ
3
$3,920
$392
$4,312
0.01
$196
33
T>pe IA
HW, i-3 0
10 ac.
P«rvfco»
>F(40%)
035
0.75
$11,435
$1,143
$12,578
0.10
$343
0.59
0.55
$14,135
$1,414
$15,549
0.17
$707
34



In^ctwti

0.30
0.8
$10,454
$1,045
$11,500
0.09
$314
0.54
0.6
$14,113
$1,411
$15,525
0.16
$706
35



Perron*
MF(60%)
0.53
0.6
$13,852
$1,385
$15,237
0.15
$416
0.89
0.46
$17,833
$1,783
$19,617
0.25
$892
3 6



Inp«rv«Bi

0.57
0.57
$14,153
$1,415
$15,568
0.16
$425
0 93
0.45
$18,230
$1,123
$20,053
0.26
$911
37



Pervfeui
Co bb(80<%)
0.83
0.46
$16,631
$1,663
$18,294
0.24
$499
1.31
0.37
$21,114
$2,111
$23,225
0.38
(1,056
38



Iop«rvfoo»

0.73
0.5
$15,899
$1,590
$17,489
0 21
$477
1.21
0.38
$20,029
$2,003
$22,032
0.35
$1,001
39
Tjp.lA
HW, 1-3.0
100 ac.
Perw«*
>F(40%)
3.24
0.23
*32,461
$3,246
$35,707
0.93
$974
5.6J
0.16
$39,239
$3,924
$43,163
1.61
$1,962
40



Imptrvfeoi

2.80
0.24
$29,272
$2,927
$32,200
0.80
$878
5.19
0.17
$38,433
$3,843
$42,276
1.48
$1,922
41



PtrwBt
MF (60%)
5.30
0.17
$39,248
$3,925
$43,172
1 51
$!,177
8.88
0.12
$46,418
$4,642
$51,059
2.53
$2,321
42



Iap«ivfe«»

5.38
0.17
$39,840
$3,984
$43,824
154
$1,195
8.96
0.12
$46,836
$4,684
$S1,$19
156
$1342
43



P«rvfeu
Cobb(80%)
8.32
0.13
$47,114
$4,711
$51,826
2.31
$1,413
13.1
0.09
$51,357
$5,136
$56,493
3.74
$1568
44



lapcrvioBi

7.32
0.14
$44,640
$4,464
$49,104
2.09
$1,339
12.1
0.1
$52,708
$5,271
$57,978
3.45
$1635
45
Tjp.I
SW, 1-2.5
lOae.
P«rvuai
>F(40*>)
0 25
09
$9,801
$980
$10,781
0.07
$294
0.52
0.59
$13,364
$1,336
$14,701
0.15
$668
46



Iap«iv*)m

0.2?
0.86
$10,115
$1,011
$11,126
0.08
$303
0.54
0 56
$13,173
$1,317
$14,490
0.16
$659
47



P«rre«»
MF(60%)
0 46
0.63
$12,62*
$1,262
$13,886
0.13
$379
0.87
0.46
$17,433
$1,743
$19,176
0.2S
$872
41



Itnp«rvfc>o»

0.49
0.6
$12,807
$1,281
$14,087.
0.14
S384
0.9
0.45
$17,642
$1,764
$19,406
0.26
$882
49



Ptrvcai
Co bb(8)%)
0.63
0.55
$15,094
$1,509
$16,603
0.11
$453
1.17
' 0.38
$19,367
$1,937
$21,303
0.34
$968
50



lapervtoai

0.75
0.5
$16,335
$1,634
$17,969
0 21
$490
1.29
0.36
$20,229
$2,023
$22,252
0.37
$1,011
51
Tjp* I
SW.I-15
100 ac.
P«rvfea*
~ F(40%)
2.50
0.25
$27,225
$2,723
$29,946
0.71
$817
5.22
0.17
$38,653
$3,866
$42,521
1 49
$1,933
52



Ia^«fvtos»

2.25
0.27
$26,463
$2,646
$29,109
0.64
$794
4.97
0 17
$36,804
$3,680
$40,484
1.42
$1,840
53



Pervco#
MF(60%)
4 58
0.11
$35,911
$3,591
$39,502
1.31
$1,077
8.66
0.12
$45,268
$4,527
$49,794
2.48
$1263
54



Iop«rvioB»

4.43
0.14
$34,735
$3,47J
$38,208
1.27
$1,042
8.51
0.12
$44,483
$4,448
$48,932
144
$2,224
55



P«rvba*
Co bb(80%)
6.24
0.1J
$40,772
$4,077
$44,849
1.78
$1,223
11.68
0.1
$50,878
$5,088
$55,966
3.33
$1544
5 6



Ispcrviosi

7.34
0.14
$44,762
$4.<76
$49,238
2.10
$1,343
12.78
0.1
$55,670
$5,567
$61,237
3.65
$2,783
(1) OL-OreatLakoaed Nonh«au Coa«
SE-Onl4SoB&«a« mi MW-Atliotu CoiCi
NW-Pacific No rtfcwctf (North ofSao Fran  Co BBCfcial	(6)
Plaioef ad Dtttfi Co«- 10%of CbartactioB
Aaaaal Manteaaoce Cbrt - 3% o f Coa«aj ctoB Co it
Atagtl Mastesaece Cb« Co«t - 5% ofCoa rtqj Miob
Avtrt|< PoedPcpfe ¦ 3.5 Si
det_re^2.wk3
-------
Table 3a: Infiltration Baiini Co«t Companion for Po«t-Cora true tioo BMP'i for Urban Development (East Coait)
No.
Tjptcf
2yr. 24 H r.
Property
H)dK>bgi«
DcvcbpnatTjpci,


Cootiolof2yr24hourPcakOaly




Cc=:.-=:c? :>-
. 2-i uOif "cik
m. oCni> isS i\« caov*


ft*fir«ll;
Rs=£s", (::)
Size, («.,„)
CODO IIPBI
(9b inpcrvmi) '''















Tjp

(7)


Tjp«III
SE, i-4.5
100 ic
Ex.CN- 72
P)
MF(60%)
Co a m{80%J













(«)
1
Tip. Ill
SB, 1-4.5
lie.,
PervDtf
FF/OS(95*)
0 17
0.51
13,777
$376
$4,154
0.06
$169
0.20
0.44
$4,162
$416
$4,600
0.06
$293
2


1 »c„
topcrwai

-
-
-
-
-
-
-
-
-
-
-
-
-
-
3


1 IC.,
Ptrvssi
\ ic.SFUO4*)
0.04
0.75
$1,307
$131
$1,437
0.02
$65
0.03
0.72
$1,568
$157
$1,725
0.02
$110
4


11C..
Iop«rw«»

-
-
-
-
-
-
-
-
-
-
-
-
-
-
5
Tjpelll
SE, i-4.5
10 ae.
PF(40*)
0.56
0.37
$9,348
$935
$10,263
0.22
$467
0.72
0.34
$10,663
$1,066
$11,730
0.27
$746
6



Iop«rvtoBi

-
-
-
-
-
-
-
-
-
-
-
-
-
-
7



Pervcai
MF(60%)
1.00
0.33
$14,375
$1,437
$15,612
0.36
$719
1.22
0.29
$15,412
$1,541
$16,953
0.46
$1,079
4



ts^ «tvbvt

-
-
-
-
-
-
-
-
-
-
-
-
-
-
9



Pcrvfeoi
Co m m (903b )
1.39
0.28
$16,934
$1,693
$16,649
0.53
$448
1.68
0.27
$19,759
$1,976
$21,735
0,64
31.363
10



I^crvwai

-
-
-
-
-
_
-

-
-
-
-
-
-
11
Tjp.III
SB, 1-4.5
100 ic.
P«rv®B»
> F(405fc)
5 49
0.23
$35,003
$3,500
$60,504
2.09
$2,730
6,93
0.22
$66,412
$6,641
$73,053
163
$4,649
12



lapcrwoi

-
-
-
-
-
-
-
-
-
-
-
-
-
-
11



Ptrvbsi
MF(60*>
9.09
0.21
$83,152
$6,315
$91,467
3.46
$4,156
11.25
0.2
$96,010
$9,401
$107,811
4.24
$6,461
14



Iapervwai

-
-
-
-
-
-
-
-
-
-
-
-
-
-
13



PtrvcBi
Co m«(KWb)
13 30
0.19
$110,076
$11,006
$121,064
5.06
$5,504
16.20
0.16
$127,021
$12,702
$139,723
6.16
$4,691
16



IiH> erviou i

-
-
-
-
-
-
-
-
-
-
-
-
-
-
17
T»tll
GL, i>3 0
10 a«.
PtrvcBi
iF(40%)
0.42
0.36
$6,952
$695
57,647
0.16
$348
0.33
0.38
$4,773
$677
$9,630
0,20
$614
IS



Iirptrvwoi

-
-
-
-
-
-
-
-
*
-
-
-
-
-
19



Pcrvoai
MF(60*)
0.58
0.37
$9,346
$935
$10,263
0.22
$467
0 74
0.34
$10,960
$1,096
$12,056
0.28
$767
20



Iaperv»gi

-
-
-
-
-
-
-
-
-
-
-
-
-
-
21



P«rw»«i
Co o o(30%)
0.91
0.33
$13,061
$1,306
$14,369
0.35
$634
1.12
0.31
$15,124
$1,512
$16,636
0.43
$1,059
22



Inperviooi

-
-
-
-
-
_
-
..
-
-
-
-
-
-
23
Tjpcll
OL, i- 3.0
100 ic.
P)
9.15
0.2
$79,715
$7,971
$67,666
3.46
$3,986
11.23
0.19
$93,110
$9,311
$102,420
4.24
$6,516
28



lap ennoa i

-
-
-
-
-
-
-
-
-
-
-
-
-
-
No(«c	(1) OL"Ore*tL»k«» «d Ner6«aQtfcw««Coatf $o«(ho[Sa FnecUco)
(2) kfiftratioa Btuai afeaot reeona«aded fcrlaptrvbaiSoil Ocvp C
(3)	FF/OS"F»« Food/OaiStatoa
SF«Sajl« Family
MF- Ma Hi-Fa ally
Coom-G»an«iciil
(4)	Plifli ¦ j ad D«»Jjb Co ft • 10^% Cob Raetioa Co «t
(5)	AAosal Muitesiac< Cba - 5%o(Co»«a«tii Co a
(6)	Afliol Mia lea tact Cbtf - 7% ofCoa tfa ctoa Co a
(7)	Avenge Bufi D«ptk - 2.63 ft
(8)	Co it of ba^t ooBtiodb | 100acr«i bind ©b iflit »rt
ofbia ooatiolle|50acrei
det_rev2.wk3
-------
Table 3b: Infiltration Baiim Co»t Compar»oQ for Post —Cocitruction BMP't for Urban Pevebpmcnt. (Wat Coajt)
No.
Tjpeof
2yr.24Hr.
Pwpety
| Hjdsbfic
| DcvcbpooitTjptt,
1

CooUolof 2yr 24 hoar Peak Ob fv


1

Coaitoiot lyr. 24hoarPeak& 80^T5S Removal


Ran f»lh

5ii«, (acm)
coaditcaa
(% impervTom)^'















Tjp.I
SW, 1-2.5

Perv»o»(B)
FF/OS(95%)
Coatrol
Ua it Cort
CoauaictDB
Plaaa b | A
Total
AreaLort
MaaU
Ceo lio 1
Uart Cort
Coast at ctea
Plana of A
Total
AreaLort
ManL

T»elA
NWJ-3.0
lac..
Ej.CN- 60
lie.5F(20%)
Vohae
(Vcf)
Co it
D<«i* Q»tt
Cort
(tern)
Co*($/yt)
VoL
(Vcf)
Cort
De«ts Qtct
Co ct
(a<«»)
Cort

t»« n
OL,i- 3.0
10 ac.,o r
Isfxrvoo »(C)
SF(40%)
(.c-fi)
<«)

(*)

O)
(J)
, (a<^ 6)
(«>

(4)

(7)
<$/yr)

Tjp. Ill
SE, 1-4.5
100 ac.
Ex.CN- 72
(2)
MF(60%)
Cobb(80%)













(6)
29
T»elA
NW.i-30
1 ac.,
Pcrveu*
FF/OS(95%)
o.n
0.3?
$2,731
J273
$3,004
0.03
$137
0.13
0.55
$3,115
$311
$3,426
0.05
$218
30


1 ac.,
le^ervKoi

-
-
-
-
-
-
-
-
-
-
-
-
-
-
31


1 ac.,
Pcrvoai
1 ac.SP(2CTO)
0.02
0.95
$82#
$83
$910
0.01
$41
0 024
0.85
$889
$89
$977
0.01
$62
32


1 ac.,
IiapcrvBBi

-
-
-
-
-
-
-
-
-
-
-
-
-
-
3)
TjpelA
NW, t-3.0
10 ic.
PcrvftM
>F(4CWb)
035
0.43
$6,556
S656
$7,211
0.10
$328
0.43
0 39
$7,305
$731
$8,036
0.16
$511
34



I mp < rv»« i

-
-
-
-
_
_
-
-
-
-
-
-
-
-
35



Ptrvcoa
MF(60%)
0,53
0.37
$8,542
J854
$9,396
0.15
$427
0.65
0.36
$10,193
$1,019
$11,212
0.25
$714
36



Ioperveua

-
-
-
-
-
-
-
-
-
-
-
-
-
-
37



Pervooa
Co b b(S0%)
0. A3
0.33
$ 11,931
$1,193
$13,124
0.24
$597
0.91
0.33
$14,087
$1,409
$15,496
0.37
$986
36



InfxrvuB i

-
-
-
-
-
_
-
-
-
-
-
-
-
-
39
Tjp.IA
NW.I-30
100 ac.
Ptrvetia
>F(40%)
3.24
0.26
$36,695
$3,669
$40,3*4
0.93
$1,83$
4
0 26
$45,302
$4,530
$49,833
1.52
$3,171
40



Icopervbui

-
-
-

-
-
-
-
-
-
-
-
-
-
41



Pcrvoaa
MF(60*)
5 30
0.23
$53,100
$5,310
$51,410
1.51
$2,655
6.46
0.23
$64,721
$6,472
$71,194
2.46
$4,531
42



Iiopervioo*

-
-
-
-
_
_
-
-
-
-
-
-
-
-
43



Perv»i a

-
-
-
-
-
-
-
-
-
-
-
-
-
-
55



Perviiui
Co Qjm(80^>)
6.24
0.22
$59,799
$5,980
$65,779
1 78
$2,990
8
0.21
$73,181
$7,318
$80,499
3.04
$5,123
56



Iop«rv*>9»

-
-
-
-
-
-
-
-
-
-
-
-
-
-
(1) 0L-OreatLakei and NonbeattCoa*
SE"0«l£,Sou4ti« ad Md-Atlaahc Co Hi
NW-Pacific No nhwe«t (North ofSan Frtscim)
S W»Sobihwetf Coa* {SoKhof Sa FraciMo)
, (2) k Ghratioo Bauai are aot woo oBeaded fcf Inperwu i Soil Onap C
(3)	FF/OS- Fi« Food/0ai States
SF-SbjIeFaaity
MF» MuKl- Faaity
Co bb" Co Btaetcial
(4)	P!u«b| Md Deiip Co** ¦ 10% Cooflta«ioa Coct
(5)	Aaaaal Muateaiace Cbrt ¦ 5% of Coa tfacioa Cort
(6)	Aaa« a I Mafates lace Cbrt » 7% of Coa rtnietba Co fl
(7) Avenge Bue D?th ¦ 2.63 ft
(I) Cortof ba«» ooatrollai 1100 acre* bated oo oatt cort
of ban ooatrollB j50ac«»
det_rew2.wk3
-------
(i) Dimensions of Development: length = 2 x width
e.g. for a 1 ac development length = 300 feet
width = 150 feet
(ii) Slope, S: 3% for GL, SE and SW Region
5 % for NW Region
(iii)	Curve Number, CN:
Existing Conditions - Pasture, meadow, brush and woods with good hydrologic
conditions:
For pervious soil (SCS Soil Type B) CN=60
For impervious soil (SCS Soil Type C) CN=72
Proposed Conditions - Impervious Cover, CN=98
(iv)	Time of Concentration:
Existing Conditions -	All pre-development sites were assumed to have dense
grass cover with Manning's roughness coefficient, n=0.24
for 300 feet of sheet flow. For flow lengths that exceeded
300 feet, flows were assumed to be unpaved, shallow
concentrated flow.
Proposed Conditions - 1-acre and 10-acre Gas Station/Fast Food and Commercial
developments were assumed to have a time of concentration
= 6 minutes.
For the remaining sites, the time of concentration was
calculated assuming the runoff was sheet flow over a dense
grass cover (Manning's roughness coefficient n=0.24)
before entering the pipe system. The assumed length of
sheet flow and pipe velocity are shown below.
80040000H: \WP\CM ATR55. NEW
4
May 4, 1992
-------
Sheet Flow Distance	Pipe Velocity
Commercial (100 acres)
100 feet
7 ft/sec
MF/SF (10 acres)
100 feet
3 ft/sec
MF/SF (100 acres)
300 feet
5 ft/sec
(v)	Pond Depth = 3.5 feet
Infiltration Basin Depth = 2.63 feet
(vi)	Percent Impervious
SF 40%
MF 60%
C 80%
(vii)	2-year, 24-hour Rainfall, i
GL i=3.0 inches
SE i=4.5 inches
SW i=2.5 inches
NW i=3.0 inches
The detailed calculations of the times of concentration, pre- and post-development peak runoff
rates, and storage volumes required to control the post-development peak runoff rates for each
scenario are presented in Appendix A. The storage requirements for control are the same for
both infiltration basins and ED dry ponds. The summary of the results are presented in Table
1.
2.2 Design for Removal of 80% TSS
The P-8 model (Palmstrom and Walker, 1990) was used to predict the generation and transport
of stormwater runoff pollutants in the urban catchments. The P-8 model input parameters for
this analysis included:
1.	Average storm rainfall (i.e. inches of rainfall for each hour throughout the
duration of the storm) for each of the 4 coastal regions;
2.	Type of BMP (ED Dry Pond or Infiltration Basin); and
80C40000H: \WP\CM ATR55 .NEW
5
May 4, 1992
-------
3.
Average pollutant loads of TSS (taken from NURP 50).
The following is a list of the rainfall parameters used for each region based on Analysis of
Storm Event Characteristics for Selected Rainfall Gages Throughout the United States
(Woodward-Clyde, 1989):
GL
Average Storm Duration
12 hours
Average Storm Rainfall
0.59 inches
Average Interval
Between Storms
144 hours
SW
12 hours
0.54 inches
476 hours
SE
8 hours
0.78 inches
133 hours
NW
16 hours
0.54 inches
123 hours
In order to distribute the rainfall over the storm duration, the SCS Type I, IA, II, and III curves
were used and the rainfall was distributed over the appropriate storm duration. For example,
in the GL region, 0.59 inches of rainfall was distributed over 12 hours using a Type II storm
distribution.
The ED dry ponds were designed to have a 48-hour drawdown time. All designs were
optimized to achieve 80% removal of TSS. The individual scenario simulation results are
presented in Appendix B and Table 1.
2.3 Cost Determination
Cost data were taken from Woodward-Clyde's "Urban BMPs Cost and Effectiveness Summary
Data for 6217(g) Guidance- Post-Construction Stormwater Runoff Treatment" (Woodward-
Clyde, 1992). Figures 1 and 2 show the unit construction costs per storage volume for dry ponds
and infiltration basins, respectively. Costs were based on 1988 dollars.
The cost of the different BMP scenarios was based on the size of the "Control Volume." The
" Control Volume" will provide sufficient volume to meet the management measure performance
criteria. Tables 2 and 3 summarize for each scenario the cost of the required ED dry pond or
infiltration basin. The tables include the costs to control only the 2-year, 24-hour peak rainfall
and the costs to control both the 2-year, 24-hour peak rainfall and 80% TSS removal. This is
provided since some localities already require peak rainfall control; and therefore, cost increases
due to the pollutant removal requirement of the management measure can be easily determined.
Planning and design costs were assumed to be 10% of the construction costs. Annual
80040000H.\WP\CMATR55 NEW
6
May 4, 1992
-------
maintenance costs were also based on a percentage of the construction costs. The following is
a list of how the maintenance costs were computed for each BMP scenario.
Extended Detention Dry Pond
•	2-year, 24-hour only= 3% of construction cost
•	2-year, 24-hour + 80% TSS removal = 5% of construction cost
Infiltration Basin
•	2-year, 24-hour only= 5% of construction cost
•	2-year, 24-hour + 80% TSS removal = 7% of construction cost
The estimated useful life of ED dry ponds is 50 years and infiltration basins is 25 years.
It should be noted that the costs presented in the tables do not include the cost of land, permits,
or review fees.
80040000H: \WP\CM ATR55. N EW
7
May 4, 1992
-------
FIGURE 1. UNIT CONSTRUCTION COSTS OF DRY PONDS
10
0.1
0.01
DRY PONDS
COST/CU FT STORAGE
1000
10000	100000
Storage, cu. ft
1000000
80040000H :\WP\CM ATR55 .NEW
8
April 29, 1992
-------
FIGURE 2. UNIT CONSTRUCTION COSTS OF INFILTRATION BASINS
INFILTRATION BASIN
COST/CU FT STORAGE
10000
1000
100000
1000000
10000000
Storage, cu. fL
80040000H:\WP\CMATR55.NEW
9
April 29, 1992
-------
3.0 SUMMARY
As expected, the costs were lowest for single family development and highest for commercial
development. A summary of the high and low costs and average costs by drainage area, land
use, and BMP are as follows:

Peak Control Storage
Total
Storage
Drainage
Area
(Acres)
Land-
use
High
(S)
Low
($)
Average
($)
High
($)
Low
($)
Average
(S)
ED Dry Ponds
1
SF
4792
3642
4217
5750
4312
5031
1
FF/GS
9123
6900
7918
11,126
8266
9704
10
SF
16,603
10,781
12,997
21,131
14,490
17,104
10
MF
20,604
13,886
16,434
24,993
19,176
21,264
10
C
23,311
16,603
19,318
28,850
21,303
24,237
100
SF
42,089
29,109
34,793
50,968
40,484
45,357
100
MF
52,267
38,208
44,079
66,239
48,932
54,639
100
C
63,728
44,849
52,488
74,519
55,966
63,549
Infiltration Basins
1
SF
1437
910
1174
1725
977
1351
1
FF/GS
3004
4154
3579
4600
3426
4013
10
SF
10,283
5,630
7,693
11,730
6,842
9,065
10
MF
15,812
8,376
10,967
16,953
10,177
12,600
10
C
18,649
10,867
14,257
21,735
12,808
16,669
100
SF
60,504
34,739
45,830
73,053
42,109
54,721
100
MF
91,467
52,669
65,737
107,811
65,022
79,396
100
C
121,084
65,779
89,567
139,723
80,499
104,283
80040000H: \WP\CM ATR55.NEW
10
May 4, 1992
-------
The average infiltration basin costs were less than the ED dry pond costs for the 1- and 10-acre
si tes for all landuse types. The average increase in cost for control of both the peak runoff rate
and TSS over control of just the peak runoff rate was about 27% for ED dry ponds and about
18% for infiltration basins. It should also be noted that if the ED dry ponds are also used as
sediment control basins during construction, the costs can be reduced by $9,000 for 10-acre sites
and $36,000 for 100-acre sites.
The costs for controlling runoff from 1-acre sites is considerable, especially for single family
development. Alternative BMPs such as swales and careful site layout would probably be more
cost effective for single family development on 1-acre lots. For fast food/gas station
development on 1-acre lots, water quality inlets in conjunction with regional peak runoff control
would probably be more cost effective.
4,0 REFERENCES
Palmstrom, N. and W. Walker. 1990. P8 Urban Catchment Model: User's Manual and
Program Documentation. Prepared for the Narragansett Bay Project, U.S. EPA. #NBP-
90-50.
Soil Conservation Service. 1986. Urban Hydrology for Small Watersheds. Technical Release
55.
Woodward-Clyde. 1992. "Urban BMPs Cost and Effectiveness Summary Data for 6217(g)
Guidance - Post-Construction Stormwater Runoff Treatment." Prepared for the U.S.
EPA.
Woodward-Clyde. 1989. Analysis of Storm Event Characteristics for Selected Rainfall Gages
Throughout the United States. Prepared for the U.S. EPA.
80040000H: \WP\CM ATR55. N EW
11
May 4, 1992
-------
APPENDIX A
2-YEAR, 24-HOUR RAINFALL RUNOFF
CALCULATIONS
80040000H:\WP\CMATR55.NEW
12
-------
NORTHEAST AND GREAT LAKES REGION RESULTS
-------
Worksheet 3: Time of concentration (Tc) or travel time (Tf)
Project	j ^ K ^'l CO^M'&ZOf frU	 By	Date Afnt
Location lOct^j I		
Checked
Date
Circle one
Circle one
?resentp 'Developed
through subarea

NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Segment ID
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) .		
2.	Manning'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L 300 ft) 		
4.	Two-yr 24-hr rainfall, ?2 	
ft
in
5. Land slope, s 	 ft/ft
0.007 UM0:6	T( 	
6. T
„ 0.5 0.A
2 6
hr
Shallow concentrated flow
Segment ID
7.	Surface description (paved or unpaved) 	
8.	Flow length, L			ft
9.	Uatercourse slope, s 	 ft/ft
10. Average velocity, V (figure 3-1) 	 ft/e
L
1 1 T
t 3600 V
Channel flow
Compute T
Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, p 		
17. V -
1.49 r2/3 s1/2
18. Flow length, L
L
19. T
3600 V
hr
	 ft
	 ft
a
14. Hydraulic radius, r » — Compute r 		 ft
Pw
15.	Channel slope, s 	 ft/ft
16.	Manning's roughness coeff., n 		
Compute V 		 ft/a
	 ft
Compute ...... hr
segments.
10 u
|(?i? iW_


QYDST)

O'M

'boo !
3o0
3-0
3>o

0.O2>
*¦€> ,

1

*

\£d
^t[(iav€d
loo '
Z)~]0o
OVb -

2*
<9 ^
O'Ol
O^l






/



1



/

/

1

1, and 19)

' J'&l
#¦11
(210-VI-TR-55, Second Ed., June 1986)
I
-------

Worksheet 3: Time of concentration (Tc) or travel time
Project "p*-
Location
10 6-C IOO "¦

By
Checked
Date
Date
bpr>l 9^-
Circle one: Present De^^ped
Circle one:
T through subarea
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow segments.li
\oo
Sheet flow (Applicable to Tc only)	Segment ID
1.	Surface description (table 3-1) 	
2.	Hanning'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L _< 300 ft) 	 ft
4.	Two-yr 24-hr rainfall, P^ 	 in
5.	Land slope, s 						 ft/ft
.0.8
6. T
0.007 (nl)
D 0.5 0.4
2 6
Compute T
hr
t^s-e

\00


<21
Shallow concentrated flow
Segment ID
7.	Surface descri-pt-lon^ (paved or unpaved)
8.	Plow length, L	r7Tvv-.,._......... ft
9.	Uatercourse slope, s 		 ft/
10. Average velocity, V (figure 3-1) 	 ft/s
L
11 T
t 3600 V
Compute T
hr

¦bdo
^7 ' O
o>®3? ¦
.P
Pi *2 0

ir
p-
'¦V	/ 7/ ~	Cj./ ~fo<~ |0£it^e sift'
I 7Xh"anTic±; f low !^/ i, iA DiX~T< j - isri'/f	Segment ID
12.	Cross sectional flow
13.	Uetted perimeter, p
1 ' S m /v (0c-far
larea, a				 ft
ft
ft
14.	Hydraulic radius, r - — Compute r 	
15.	Channel slope, s 	 ft/ft
16. Manning's roughness coeff., n
17. V -
1 Aq 2/3 1/2
1.49 r s
18. Flow length, L
19 t - 	1	
t 3600 V
Compute V 	 ft/s
	 ft
Compute T
hr


^Vo
O.DY
i
20. Watershed or subarea T or T (add T in seeps 6, II. and 19
c	t	t
&	^ /oT
--j 0 c j;i ni/tp (sJ	^ L* U-d (
" (2)
AH
21DP
0 ¦ /3
hr
0. <5^
~A-
litif^'O
—-	(210-VITR-55, Second Ed., June 1986)	r
)0~ fa/ to tfc. $
-------
Worksheet 3: Time of concentration (Tc) or travel time (T^)
Project OOldJ				 By ^
Location
lOgyQ, \ftO.
Checked
Date
Date
y

Circle one: Present
Circle one:
T through subarea
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow 6e
Sheet flou (Applicable to Tc only)	Segment ID
1.	Surface description (table 3-1)
2.	Manning's roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L_<_ 300 ft)
4.	Two-yr 24-hr rainfall, P

O^Ob
5. Land slope, s 	 ft/ft
0.007 (nL)
Compute T
„ 0.5 0.6
2 "
""Shajlow concentrated flow	Segment ID
7.	Surface d&fe-cJ.j>tion (paved or unpaved)
8.	Flow length, L		 ft
9.	Watercourse slope, s 	7T>»^_ft/ft
10. Average velocity, V (figure 3-1) 	 ft/s
«\
Compute T
11 T *
1 * At 3600 V
Channel flou u/	^ "I"' Is ' Segment ID
12. Cro66 sectional flow area, a
13. Wetted perimeter, p
14. Hydraulic radius, r - — Compute r
15. Channel slope, s 	 ft/ft
. ,Q 2/3 1/2
1*49 r s
Compute V 	 ft/s
	 ft
Compute T 	 hr
dl°D
0.3>M-he
(AJI

16. Manning's roughness coeff., n
18. Flow length, L
. L
3600 V

20. Watershed or subarea T or T (add T in steps 6, 11,
c	t	t	\
Q}	-tit* ^ ^
(j) P"0	-f/ovO .
(210-VJ-TR-55, Second Ed., June 1986)
(l) Pfr-S ,0^c	-fldu> iff -fy^t!.¦€-( *7 co0^'/l/'
^oY	(OO xJ	fbl/K]
-------
cl^S

Project
Worksheet 4: Graphical-Peak Discharge method
Location

fe-7
°ate
Date
Checked
Circle onqf: Present~~~\E(eveloped

1. Data:
Drainage area 	 A_ ? O-b^b mi^ (acres/640) ^ioo
®! Ocl	
o.l s fc ** i
GO
Runoff curve number .... Ctj^»
Time of concentration .. T _** 061/7 -0l7hr (From worksheet 3) XL,
et°o£_	/ 'ciuoii—	jsiq#
Rainfall distribution type
Pond and swamp areas spread
throughout watershed ......
(From worksheet 2)	*7^
0.2^

= o-i 5
M-
(l, IA, II, III)
£
percent of A ( tp acres or covered)
/o. 1

"*>3-
O-
0-^
o.H-H-i
O-^VL "b
o-Z'Lb
ozz3

2^0
630 ^
O
0^2_
o-3 3 .
/,o
f. o
lO
/.Q
. o

e>
2-f
7.?
U- o
D 4
(210-VI-TR-55, Second Ed., June 1986)
-------
\v\r'
R-:
iJ
Worksheet 4: Graphical Peak Discharge method
Project
Location

By
¦tlOO
- Q¦ bS
4-
percent of	^ acres or mi^ covered)
\ o
Y" ov-ica u*. iux luvci eu j	_	{
to o
lo
I oo
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CM with table 4-1.)
5.	Compute I /P 	
6.	Unit peak discharge, q 	 csm/ln
(Use Tc and X /P with exhibit 4- y^-) '
7.	Runoff, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, 		cfs
(Vfhere  O
3.0

(]OU
ooifc



ODio
0 • 2- (0 .
0-
6 >9 .

^3 o
^ 0 "D
(d Go
. ^30
i
t-V
o*-
/+.
/¦p i
i
1
/.o
/. 0
/. 0
/¦«.




5 +
W'°t

93 •
-------

Project
Worksheet 4: Graphical -Peak Discharge method
fatr		 By^/f	Date fyynl ^7,
Location ^ydA^C	/'vl
Circle one: /Present
_ Checked
')&VU &lO
Date
1. Data:
A . 3 &01*6)"4 ml^ (acres/640) /^icOc^T ^^
|
(From worksheet 2) CNj)	1
Drainage area 	 _
Runoff curve number .... CN„"«
	/
Time of concentration .. T « 0'57 /T* '^?hr (From worksheet 3TTr^T* - 0'zc|
Gf&t, /' 'P/cio	-
Rainfall distribution type "	(I, IA, II, III)
'D zoo*
0- 6S
Pond and swamp areas spread
throughout watershed 	
A
percent of A
	 acres or mi covered)
(\j2sp^.o

3 - v
bi
• 3
0'i-
-------
Ij	Worksheet 4: Graphical Peak Discharge method
Uf- (,	)	 Byj^£
>roject
location	hi16
Circle one:
L. Data:
Drainage area
Developed
Checked
Date
Date

I D'LxO
A J fl.fll 5 £ nil^ (acres/640)	u^'
~ IG^
Runoff curve number .... CN^
Time of concentration .. T
©J *JL
Rainfall distribution type
Pond and swamp areas spread
throughout watershed 		
~7^"" (From worksheet 2)	~~
0 >74«n^lltxT (From worksheet 3^,q5 ,TD|00' O'^
7-c - -• 	
(I, IA, II, III)
^	percent of A^ ( acres or mi^ covered)
IO	 V-aO	ID	1 ©^
Storm fl-2-
Z. Frequency 		yr
3. Rainfall, P (24-hour) 			in
i. Initial abstraction, I 		in
a
(Use CN with table 4-1.)
5.	Compute Xa/P 	
6.	Unit peak discharge, q 		 cstn/in
(Use Tc and Ia/P with exhibit 4- )
7.	Runoff, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
(Where q = q A QF )
Mp u rn p
Storm—m~
a
^•o
Storm -#4-
t>n Sr
OllV
^¦2 73
0.1-1 b

b • i ^
-6 Zfe
o
o-oci

o

7c0


o-%


M


l-o



/




5-^



-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project	'	 By H~~~
Location	k(^» / f0^&
Checked
Date
Date
•in
Circle one: CPresejvt *35eve loped 10^.	• c$p> S
\0'cp^
1. Data:
Runoff
Drainage area 			 A_, =* ^Cl3t mi^ (acres/640)
¦5P1C?	
curve number .... CNg,- ^O
T*\0\J
(From worksheet 2)
c 0~ I & £> ^
, "2,
10T>) /oof)
^0
Time of concentration .. (From worksheet 3)^ ""[^OcT	^ Two©"
Rainfall distribution type » 3L	 (I, IA, II, III)
Pond and swamp areas spread
throughout watershed 	 -
I
percent of A (
m

acres or mi covered)
IQk. 1 OO ¦
1 0 au_
o o
<=*<
2.	Frequency 		
3.	Rainfall, P (24-hour)
4. Initial abstraction, I
a
(Use CN with table 4-1.)
yr
in
in
St<^Fa—#4-
CV •
-brULui tit
¦Storn if 3
1
3-o
2>.o
®>. O

2> .D
3 3^
5. Compute Ia/P
0-W)
533 O .^Z2 O.z 2Z_
o>° 7i
6 W^>
0*01^
6. Unit peak discharge, q 	 csm/in
u			
(L'se T and I /P with exhibit 4- JL )
x	r	.1	——
1% S
2^0
IQo O
6 SO
7.	Runoff, Q 	
(From worksheet 2).
8.	Pond and swamp adjustment factor, F^
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
in
33
0.33

- o
. o
. D
3.0
/> 0
9. Peak discharge, q
('.¦There q_ = q A QF )
Hp ^u m p
cf s
1 0 o-(_
7-02-Y
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project	-	 By
Location	'C-
Checked
Date
Date
Circle one: J&reSentf Develo
C jOn l3o^ J 'Oad
1. Data:
s-py w>
no
. 2.
'T
Drainage area .......... A^ =*	O* O) S ml^ (acres/6A0)J A'oo ~ g' ^
Runoff curve number .... CN^-	7 r)- • (From worksheet 2); CfO,oCj |0o£>_ ^ 	
Time of concentration .. Tf	r o-?7hr (From worksheet 3) -r = £>•/	"T . =
RalnfaLl distribution type »	H-
Pond and swamp areas spread
throughout watershed 	
4>
(I, IA, II, III)
percent of A ( y acres or	covered)
m —t—	^
'to	i
i J	i Oo
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
' a
(Use CN with table 4-1.)
5.	Compute I /P 	
6.	Unit peak discharge, q 	 csm/in
(Use T and I /P with exhibit 4- IC_)
c	a		
7.	Runoff, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('50
u-fr
o.tr
2-2
?' 2-

l-------
Worksheet 6a: Detention basin storage,
I	rw^ak outflow discharge (a^) known
peak outflow discharge (q^ known
Project
Location		'	Checked 	 Date	
Circle one: Present^TSevelope	\QfiO ¦ / \00 		
o
60
<0
u
o
c
o
03
>
0>
^^ZZTTI
1
_L
LLJ—L
-1-4-
-K-
-l-T-
w
+7
TT
-H-4
EE
±r
±4
XTX
"T~TT"
II
-4-4-
> t :
fnr
--! I I
Til l I I . .
I i i i | ' i
CT7
i_i.
IT] :
:ixn{±i
MM

J-!
rr
iff:
-L-Ui-
L}
M '
li»:
-L4-
-i J--
1~pi"
tit
— U-
¦ t
=P=
-i-rH-
H—L
-HH-
-H-
U+-
' ' | i
TT
nx
-H-H ! I
-t—J—i—r —
+-¦
3ie
'ti-TT
• T-i-r
rH-f
fxi: L!_;
¦ i-
J. j.i
tT!T
—-rt-
HE
-+-M-
1,11
4+1+
i ¦ i
: i
-M-
-M-
lOD at ftv-- 0
(vr - 0^53.33)
Storage volume,
V 	 ac-ft
8
-------

Worksheet 6a: Detention basin storage,
peak outflow discharge (%) known
Project

Location
Circle one: Present lj>€vel6^e^
I 0 O-L-
By
Date hjTy I 2^
Checked
( &-0
Date
41
cc
a
u
o
c
o
«8
>


V
r <1
o
(Use — with figure
qi
6-1)
f '
7.
Runoff, Q	 in
/.«/
f'9-

(From worksheet 2)


H.
Runoff volume,
.......... ac—ft
in
//¦h

-------
-(/

Worksheet 6a: Detention basin storage,
peak outflow discharge (c^) known
Project

Location

Cjf5L
Checked
Date
Circle one: Present De^el<$ed
O
to

41
, / / OD^e-
	7J	
1. Data:
Drainage area ..
Rainfall distribution
\bOac
.. JPj& - OVlSL ml2
- ^
Detention basin storage
V
2. Frequency
yr
3. Peak Inflow dis-
charge, q^ •••• cfs
4. Peak outflow dis-
charge, qfl .... cfs
5. Compute —
(£W 1 foo^

Vv2jh1'

£-<{{

¦f ¦-
<1
lb' 7
|00-/
5b)
_l
/.* hH-


C' 11
0-1 2-


6. 7T~
r qo
(Use — with figure 6-1)
7.	Runoff, Q ¦••••¦ in
(From worksheet 2)
8.	Runoff volume,
Vj .•*.«»..«• ac—ft
(Vr - <1^53.33)
9.	Storage volume,
V. 	 ac-ft
-------
o^l
J-ifrpho ¦
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
Project
Me.
By

Location

Circle one: Present Dey^lefced
IP,
7
Checked 	
7 ( 01) ^
Date
Date

01
CO
<0
u
o
c
o
CO
>
0)
Tin
-1-^ ir

¦ Li-i-L
J_1.
llTtr:
a
rtirh
—1_
rrr-
TT
-H4
mp
J J
J—Ll_
-i J- .
-f-T-
"tt
-1-+-
T±Z
rttfcj
— k.
1-14
-u-L.
tt
u
T*,t
"H"
144-

-(—i—i—

-U_

-i—L
-M-
J-4-
"h-t
"IT TT
71 ' —
rh
ale
f-trr*-
*-r.
-h4
IX.
1
ir-P-'p
t!±!
	. ¦ • I
+-M-
Hi'1;
-M-
i-H-
i-i-
-+-T-
J	1_
1. Data:
Detention basin storage
V
ts\ - c)' ISb
Drainage area 	
Rainfall distribution
2.	Frequency	yr
3.	Peak inflow dis-
charge, q4 •••• cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
0-o\Q
mi
1 Ocl<-
/CcVc-
1st
stage
2nd
stage




1 I
7/} '1

5b)
V
Zf If
;W


OIL
0.3]
6. T~~
7. Runoff, Q ««•»•« in
(From worksheet 2)
8. Runoff volume,
.......... a
(Vr - Q/^53.33)
9. Storage volume,
V 	 ac-ft
1
'¦1



i^ii


0 I 5.1%






XI 2nd stage qQ includes 1st stage q£
(210-VI-TR-55, Second Ed., June 1986)
D
-------
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
Project C&A/i JVUUvM &J\	 By	Date
Location		 Checked	 Date 	
Circle one: Present De^e^oped	[Q*^/	—		
00
CO
»-r
o
c
o

0)
1
4-
-t
-J
-i-hr4-n-



! 1 : 1 i 1
-' —r

—l-i-L-
i ¦
-• 1 ' J	
1 I .
—T—' J	






1 i i i
1 1 | -

	
t -

J
-tfrr.. =

; i

	

-4^
uL


+T
-h—u
nr




—r-
—*—1


-4+4-

I ¦ 	

:±r!±r
__



"tf"
H4—f- -




¦ i
—1—
1
1
: ! i

' i ! i
• i -i

i
	r	
_ .
1 J
1-
~r


-H

"1-




-I.
4-t

! i I
i_i .j- .
' I :

"h~


-tH-h

1
-+¦
"T 1
** r- • -4 ¦:
7 •••

J—r
- -+-


-4—1
~T~1	L"^'
"H T f"1 i

~i—}—

¦

i J 1 !
i
1
1

m
-H—f-
.+-U-LJ






"Miit"
¦ ¦ ¦ t


H—
'
...
-4—1 I 1 I- 1	k
• -f-jii-t-rr

Tt
r:
; i
-t-,
« i
T+--
. —




1 j ; I '

, ' '
M——

-|-

-rt$Zr-
• 4+-

i


-H—
III

; ' il ' '

H—
i

_
:_tz-L
-Ll.i
_1_^_

U.;
f-r-; r
-r-pj—
_^I L
	1-

i :
-h-
i ¦ .
Mil.'-
i ' i I ! i

	

T-P^PTt
"T
-J-
- +
~
*
i EH
, _ri.:
sS
«- i—f-
i J
tr



p


i , ; | I ' I

-f—

531
I —



4-lU

I i I I ' ' !

, i



•-!	HH		
I ¦



" r —
lr +4iL"r'
4itOE!r
. . , . I
f">—|—*—1—t—rT-
-i— I ; 1 1 : j ;—
; M i"!~


—i	1 1 1 1 1 1 ;	
—-p-H-- ,
h-1. i i
I I •

" T 	
1. Data,	<"»* A..-C./S6-;»-
Drainage area ..IQl-'J-. ~ 0 -0lS& mi
Rainfall distribution
type (I, 1A, II, III) - Vr-
Detention basin storage
V
2.	Frequency ...... yr
3.	Peak Inflow dis-
charge, q^ .... cfs
(From worksheet 4 oi
k. Peak outflow dis-
charge, qQ .... cfs
Compute —
IO#-c
2dL
3I<2
5b)
*7
O-Q'D
~~t^7
o-1
tOCk><-
tage
hL
zoi*
|7-4
0:

6. —
(Use — with figure
7. Runoff, Q ...... in
(From worksheet 2)
8. Runoff volume,
V .......... a
-------

\LM
Worksheet 6a: Detention basin storage,
peak outflow discharge (t^) known
Project

Location
¦x


Checked
Date
Date
hfril 42
Circle one: Present De>jelpf?ed
7

4>
oo
cd
u
o
c
o
<0
>
i~-


\<&D-
l&^o


0
lo5



y 2nd stage q includes 1st stage q .
(210-VI-TR-55, Second Ed., June 1986)
-------
MID ATLANTIC, SOUTHEAST, AND GULF REGION RESULTS
-------
Worksheet 3: Time of concentration (Tc) or travel time (Tj_)
Project 12j^/gtfkiUU. 7jf)°	Date /4^v' ^ ^ ^
Location
Circle one£
Circle one
resent Dev
Checked
Date
Date
through subarea
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow segments.
prtyi&jjdy
Sheet flow (Applicable to Tc only)	Segment ID
1.	Surface description (table 3-1) 			
2.	Mannlng'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L < 300 ft) 			ft
4. Two-yr 24-hr rainfall, P-
5. Land slope, s 	 ft/ft
, T 0.007 (nL)0,8	„ „ _
6* Tt	0.5 0.4	C°mpUte Tt 	 hr
P2 s
Shallow concentrated flow
Segment ID
7.	Surface description (paved or unpaved) 	
8.	Flow length, L 			ft
9.	Watercourse slope, 6 		 ft/ft
10. Average velocity, V (figure 3-1) 	 ft/s
L
11 T m
1 • lt 3600 V
Channel flow
Compute T
Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, p 	
14.	Hydraulic radius, r - — Compute r
Pw
15.
Channel slope, s 		 ft/ft
16. Manning's roughness coeff., n
17.
1.4» r2'3 „"2
18. Flow length, L
L
19. T
3600 V
Compute V 	 ft/s
Compute
20. Watershed or subarea T or T (add T In steps 6, 11, and 19)
c t	t
(210-VI-TR-55, Second Ed., June 1986)
iOO
P'O 2
- //. tyw
t- /
-------
Worksheet 4: Graphical-Peak Discharge method
i	_
Project
Location CI IMr	Checked
>n
Date
Date
jrpv$[ 4
Circle one: Present Developed
1. Data:
Drainage area ,....... A
m
Ja. {'J
T'O	—» S~\ !&	| .
6^'Q 0 I b	(acres/640)
Runoff curve number .... CN^-	1 j tjfc (From worksheet 2)	7-2 y
Time of concentration .. T = A
hr (From worksheet 3) ~J~£ ~ O'Itf ^
Rainfall distribution type - Tt?	(I, IA, II, III)
Pond and swamp areas spread
throughout watershed 	
-f
percent of A
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 				in
4.	Initial abstraction, I 		in
a
(Use CS with table 4-1.)
5.	Compute Ig/P 	
6.	Unit peak discharge, q 	 csrn/in
(Use T and I /P with exhibit 4- "fff )
C	3	¦
7.	Runoff, Q 		in
(Frora worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^				cfs
(Where q = q A QF )
np u m p

acres or ml covered)
£*
"'V7£ev-e(
£2.	.—


¦ uioriD ¦

	P
sv\ ^



J
5









(-33

0.ni£




0-3
0X1
O 1 1
0• ) b



'hio
^30 •

5^0



| .0
!¦£
(¦fr -
Z - 2_



AiO


>s






O-t ¦
(,^1
I-2
M


D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Project
Worksheet 6a: Detention basin storage,
peak outflow discharge (%) known
jut
Location f ^fc-c I cr(^
Checked
Date
Date

2_ _
Circle one: Present(j J /^£1q
TPFZ~.
0)
00
(0
Wl
o
c
o
«
>•
0)
Tiitr
:pExn
4it-Ti
t
-Ha
_L
- J--4—L 1_4_
-j—,
-L-L
4-L
I i I -L-1-
7F=f
II 1 •
HIT-
' Si
-i (-
-H-f
f
4--
h

m
-t-H?
¦ M , 1
"t T- r
±m
Ttt:
f- r i-t-r
4_T_t J	
1—
4 —
Lf:
ru:
•K
¦H-
4-t
-H-

ttt
	i_
-14
-TtT
Uxi
—; H
hU
T " "i"!
i t+TT
" —-rf
j -I.. ¦ ¦ L
4—1—*-
Ti-
: i 1
TITTT
4-U-
T7
+-M-
-M-
-H-
j-U-
-U-L-
-rr
_t_L
I i I I - I
-tti-r-r
-M-
I I I i
: i i ; i
' i' i
+-1-
:.=]
Detention basin storage
V
1. Data:
Drainage	area .
Rainfall	dlstribut
type (1,	IA, II,/ill
IM,
pCSofCflsl
2. Frequency
yr
3.	Peak inflow dis-
charge, •••• cfs
(Froa worksheet 4 ox
4.	Peak outflow dis-
charge, qQ .... cfs
v h
r
t-n i,ci
5b)
• b ¦
5. Compute —
o 
6-1)

1-
2-2,


0-/3
D(°\


DM}

?'D>4
O
-------

%
Project
Location 	
Circle one:
Circle one:
Worksheet 3: Time of concentration (Tc) or travel time (Tf)
filling ^attorn	< By	- Date ^ j-jjcj_
.1 '
Checked
Date
Tf*nr
through subarea
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow segments
Segment ID
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) 			
2.	Manning's roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L_< 300 ft) ..........
4.	Two-yr 24-hr rainfall, Pj 		
ft
in
5. Land slope, s 	 ft/ft
, - 0.007 (nL)°*8	_	_
6- Tt	0.5 0.4	Compute Tt 	 hr
P2 S
Shallow concentrated flow
Segment ID
7.	Surface description (paved or unpaved) 	
8.	Plow length, L 			ft
9.	Watercourse 6lope, s 		 ft/ft
10. Average velocity, V (figure 3-1) ........... ft/s
L
U* Tt 3600 V
Channel flow
Compute T
hr
Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, py 	
14. Hydraulic radius, r - — Compute r
Pw
ft
ft
ft
15. Channel slope, s 	 ft/ft
\ OAAAs-
Manning's roughness coeff., n
17. V
1.49 r2/3 s1/2
18. Plow length, L
19' Tt-WT
Compute V	 ft/s
	 ft
Compute T 	 hr
-segments.
t&lMrfU2-



p<5d^





"boo ¦


4-^ ¦


9-0^ ¦


#41
*




!


/


/


/


/


/





i


1


1


I


/


/








1.
¦ \
/
1, and 19)



-/{
¦zS> •*?>»')
986)
1
-------
^Worksheet 4: Graphical Peak Discharge method
j &c. 5'fe
Project
fviUq \s	'y^gO
Location

Checked
Date
Date

Z
Ctrcle one: present Developed
[) y\ (IJ	^pv'j
Cj5 fle^Sox^? -f •'fe- )
L. Data:
Drainage area ...
OcvoWIM /
Runofi' curve number .... CN ~ bO
m
0-optl
Time of concentration .. T,

mi (acres/640)
From worksheet 2)
cvv- f7
g.  / /jf"
Pond and swamp areas spread
throughout watershed 	
A
percent
°f Am
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CN with table 4-1.)
5.	Compute I /P 	
6.	Unit peak discharge, q 	 csm/in
(L'se T_ ^nd I3/P with exhibit 4- )
7.	Runoff, Q 		in
(Frora worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('"There q = q A QF )
MP u m p
¦fir . ^
Vest

o-^>
Dfvt* op


•jL\> W Cl K J

A


y
4.6? ¦—


		>



/ 33

o>ii V
0.O62..


0.3>o
O ¦ 02_ .
oil
0-O I

6-1
370 •
6 5o
-------
Project
Location
Worksheet 6a: Detention basin storage,
peak outflow discharge (%) known
pn\\I\Acj gfcJrro/\ (%f°	ny-frf
	1^ Crjr	
Checked
Date
Date
Apr; I
Circle one: Present
0)
60
o
c
o

4)
( l) &A	s^~te
^ J 1? <-\ ,	Ct'~fTp~


rrvH
-I—i-L
,LLJ_L
4_L
fir
-i—Ll-l.
-U-
i-t-r:
ntl±:
lEtfr
.tt
! I 1 •
Pi:.
m-
p t"-"
-K-
-^r+-
TT
+14
-IT-:
¦i •Ul-t-i-'- ,
:::rcitLp
-- l- - <4
i~n-
~H" i—:-4-
3; n ^ht
i-t
r1-"
T' '
tr
±E
T+±
rim


j 1 ' H-f-f
Tfrrrt^rt
-hV+TFF
1"
T.:t!:a±!t
	i	:	[_
i I ;
Tl"


rt
u
; i !.
4-M-
-H-
-4-L-
-+-t-
t
ff
Mil',
I ' ' I ' |
rf
-M-+-
¦ I I ' I
t4
, ¦ l !
f4+
Detention basin storage
V
1. Data:
Drainage area	Ajj ¦ 0-DD \k> ®i
Rainfall distribution
type (I, IA, II, gg -
2. Frequency
yr
3. Peak Inflow dis-
charge, .... cf8
(Froa worksheet 4 or
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
qi
(f)WO


5b)
0-6
0 '
-------
Worksheet 3: Time of concentration (Tc) or travel time (Tf)
Project
ZCtfrL-	 By jl ("t" ¦ Date ftpnl 7~3
Location {0 (M/, j&t?/yx—	 Checked	Date
Checked
Circle one: CPresejrf Developed			
Circle one:	T£ through subarea		
NOTES: Space for as many as two segments	per flow type can be used for each
worksheet. <
Include a map, schematic, or description of flow s^§ment6,
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) 	
2.	Manning'6 roughness coeff., n (table 3-1) .
3.	Flow length, L (total L _<^ 300 ft) 	
4.	Two-yr 24-hr rainfall, P^ 	
Segment ID
ft
in
5.	Land slope, s 	 ft/ft
6.			Compute T£ 	 hr
0.5 0.4
Shallow concentrated flow
Segment ID
7.	Surface description (paved or unpaved) .....
8.	Flow length, L 		ft
9.	Watercourse slope, s 			ft/ft
10. Average velocity, V (figure 3-1) 		ft/s
II. T.
"t 3600 V
Channel flow
Compute T
hr
Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, p 	
14.
15.
Hydraulic radius, r - — Compute r
ft
ft
ft
Channel slope, s 	 ft/ft
16. Manning's roughness coeff., n
17. V -
1.49 r2/3 s1/2
18. Flow length, L
19- Tt"3650^
Compute V 	 ft/s
	 ft
Compute T 	 hr

¦ 24
2)00

bO~b
s-m

\^C'
7 oo
o-o~5
a-Y
0- ol



3 oo
l\-.b
0>Ol>
o-U-l


?7 oo ¦
o

2-r
1
20. Watershed or subarea or T (add in 6teps 6, 11, and 19)

(210-V1-TR-55, Second Ed., June 1986)
L
hr
Trrj
-------
Worksheet 3: Time of concentration (Tc) or travel time (T^)
' Project	'MP
Location 10 fc-C.	(0&
¦h+
-h
Clrcle one: Present Dev;
Circle one: (1
By
Checked
Date
Date
Apr/7 7^-
ed
T through subarea		
NOTES: Space for as many as two 6egroent6 per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow segments.
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) 	
2.	Manning's roughness coeff., n (table 3-1) .
3.	Flow length, L (total L £ 300 ft) 	
4.	Two-yr 24-hr rainfall, Pj 	
Segment ID
ft
in
5. Land slope, s 	 ft/ft
0.007 (nL)0'8	- „ _
Compute T 	 hr
6. T
„ 0.5 0.4
2 6


100
4' $
0.(?5
o-ilhf.
Shallow concentrated flow
Segment ID
7.	Surface descri-pt-ion^jCpaved or unpaved) 	
8.	Flow length, L 	.~T7?TTTrrTw-*_,	 ft
9.	Watercourse slope, 6 	 fc7¥~t
10. Average velocity, V (figure 3-1) 	 ft/s
L
11. T.
3600 V
Compute T
hr
[00
>Y
^	flow i^/ ItioJrt<-j - 3	^^Seg^t^K)
o~c (0Oo<~s-r-lL~2.
Cross sectional flow area, a	;	 ft
12.
13.	Wetted perimeter,
14.	Hydraulic radius, r
Compute r
ft
ft
15. Channel slope, s 	 ft/ft
16. Manning's roughness coeff., n
17.
, 2/3 1/2
1.49 r s
18, Plow length, L
19> Tt " 3600 V
Compute V 	 ft/s
	 ft
Compute T
hr
qoo -
p.*)
20, Watershed or subarea T or T (add T In steps 6, 11, and 19
c	t	t

0-lh
$£yu>c
v<
2?DO

0>d3 ¦
D. cf
m


QfVO-
t
hr

v
&	, T / L
r-. ¦ y)p	c^j/ia IIoiaI ^ (-& i^P^l.Lm.1 (
(2>> " r	(210-VI-TR-55, Second Ed., June 1986)	f /
P»V	1°	,+,'cd	*4 100
W	lOOci u £,\\i ,	Mtf KAr-i ioo -Jf 4
-------
f 1 yilU>UCtl !>• JL A A 4 AC. WA
Project
(X)W lA^JyV/Jt oJ-
By
Hif
Location
10 osis, 1
Checked
Date
Date
~Y~>
I f-
W ,TL/	Circle one: Present DeySLeped
/)v
3 /J-	Circle one: T	through subai
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow s
Segment ID
Sheet flow (Applicable to T£ only)
1.	Surface description (table 3-1) 		
2.	Manning's roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L _£ 300 ft) 	
4.	Two-yr 24—hr rainfall, 	- - -	
ft
in
5.	Land slope, s .............................. ft/ft
, _ 0.007 (nL)°*8	**	t
6.	- 	-—p-i—		Compute T 	 hr
0.5 0.4
nts.
(Ms
-Shallow concentrated flow	Segment ID
7^ Surface (JSTstcJ.p11 ori (paved or unpaved) .....
8.	Flow length, L 	. - .. .	ft
9.	Uatercourse slope, s 	TTTi-.-JFt/ft
10. Average velocity, V (figure 3-1) 	 ft/s
L
11. T "
t 3600 V
Compute T
hr
it
Channe
U-/ (/W	L i^Tc TOr 4kl(o\A/	fyutlj -f/vvO .
i/j	. v	(210-VI-TR-55, Second Ed., June 1986)
1^(7) fjyf (00 c	hJi/Ii	iff	*7
¦W	Lj . si	fioi/0
I
\Qd(H^
'l-eiAic
7 oo
0<1^
hr
O'^oli)

b tAjm
t
-------
, < u

Project
Locat io
Worksheet 4: Graphical Peak Discharge method
C^O^0	)	 By /-[	Date /qo-^} 2—
Checked	Date
Circle onei/Pr.esenc Developed
' /
lO&c /CD#c l^£>c .
4

1. Data:
Drainage area
mi2 (acres/640) ^^\ooAc " 	
Runoff curve number .... CN^-	_ (From worksheet 2) CA— "7
0-IS4, -z
	H'
£-
Time of concentration .. T -	/t ~0$hr (From worksheet 3) | ^ - 0-23 W, Id,0oo"i Ql^A J
Rainfall distribution type - *T?L-	 (£»
Pond and swamp areas spread	/ if 2
throughout watershed 	 «	tp percent of Am ( (j? acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CN with table 4-1.)
5.	Compute I /P 	
a
6.'	Unit peak discharge, q 	 cstn/ln
(L'se T ^nd I !? with exhibit 4-
7.	Runof f, Q 		in
(Fron worksheet 2).
8.	Pond and swamp adjustment factor, F ....
p
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
(VJhere q = q A QF )
u m p
o^c. \QOo<-
Srtxj I 111—H-
Y
4-5
aLuirn
1FF
l'3>
¦33 •
0'$O
v-bo
°?i?0 $60 -
/,0
1-0 .
1.0
6^

J^CA-Ll^rpjtf fle^-clayl
I Q| O Oc
Storm fiy
->
o- o (>T~
o I $
o. /
5 oo ¦ 3&v
<2.0
?v
->
\H \lf-6
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------

:f'^/
W
Worksheet 4: Graphical Peak Discharge method
Project
Ctyol 0	J
Location ^ii\P
1. Da t s.:
Date
Date
(CW/QDtf
I (7 C . / O
2^
Circle one://Present Developed
Drainage area
ViCbr
D> OlSb ml^ (acres/640) A
"1 (C>cM c
°'ISk -z
	IM i ^
Runoff curve number .... Cl^» '2^ (From worksheet 2)	^	i
Time of concentration .. T ** (h	^'6^hr (From worksheet 3) | - /)' ?-5 V>r ll)iooo"<.^'^ ^ '*
RainfaLl distribution type ¦	U— Ct, IA., LI, til)
Pond and swamp areas spread
throughout watershed ......

percent of A ( Qv acres or mi covered)
ftetcxd	fU^Ujis
2. Frequency 	 yr
&torui III
Sluim 02
—Storm //3

'Tmy



3. Rainfall, P (24-hour) ................... in
4,5 -


	>
4. Initial abstraction, I 	 in




0<1U
Ollfr
OM b*}
0' V-3^
(Use CN with table 4-1.)

5. Compute I /P 	
OM
£>¦/ 1
0- |0
D . I o
a


6. Unit peak discharge, q 	 csm/ln
0
'^D
530 ¦
3 %o
(L'se T and I /P with exhibit 4-
c	a
7 . Runof i:, Q 	
(From worksheet 2).
8. Pond and swamp adjustment factor, F
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent,pond and swamp area.)
in
hfr I l-ft I ^
•7
M
->
9. Peak discharge, q
cf s
\lo	VI''b
(, v. i
('"There q = q A OF )
u m p
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------


u
"d-
Project
Worksheet 4: Graphical Peak Discharge method
M'p (T I
By
'A
Location
Circle one://?jjesent Developed~~^\
I0a-C/K£)ct C	\dac / /0°xcj
1. Data:
Checked
Date
Date

2^

Drainage area
Vl^c
Qi OlSb	(acres/640) A

Runoff curve number .... CN^«	(From worksheet 2) CIA^3
0-IS4, ,.z
	t/M i
Time of concentration .. T ° O'V-f /t hr (From worksheet 3) 5 0-lS hr , lu^oo'i
ei->«r /!i«V	/\	'-P 1°"-	•
Rainfall distribution type - jTj__ (I, IA, II, /II]
Pond and swamp areas spread
throughout watershed 	
4>
percent of A (
m -
pj^^orf
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use C.N with table 4-1.)
5.	Compute I /P 	
3
6.	Unit peak discharge, q 	 csm/ln
u	-rf
(Use T  i







O'M-i G
v-4-lQ 1



0> 0^
O'O^



5 3o ¦
3 fro •'



2-tr
7Y 1
I ¦ 0
->

D-4
(210-VI-TR-55, Second Ed., June 1986)
-------


-? I C"
Project
Worksheet 4: Graphical.Peak Discharge method
M'P d i	~) 	 By ^ /~f
Location
Circle one:
1. Data:
esent Developed
iO<3uc ,ICDa-c
Checked
Date
Date
/rpyi I °j
Z-
en
Drainage area
XlO>c	—
Runoff curve number .... CJL- /	(From worksheet 2) CA^, — v *
D> OlSfe mi^ (acres/640) ^
<^llOOt4c
O-'S 4 -z
	H i
V
Time of concentration .. Tc|	(From worksheet 3) ^	|nr, f]>|ooot (h±L h,
Rainfall distribution type - f^H (I, IA, II, III)
Pond and swamp areas spread
throughout watershed ......

percent of A (_

acres or mi covered)
d	QjZA-Clcryl* d
I OP6 c,	\OOc^_


Gtoi'ui ill
Slului If2
-Storm #3"

2. Frequency 	

Imy



3. Rainfall, P (24-hour) 	

4.5 -


	>
u.
5.
InitiaL abstraction,. I 		in
(Use CV with table 4-1.)
Compute Ig/P 	
Unit peak discharge, q 			 csm/in
(Use T and I /P with exhibit 4- \\^)
c	a	—_> ^
Runoff, Q 		in
(From worksheet 2).
Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
Peak dLscharge, 		cfs
('•¦There q„ = q A OF )
np nu m p
1.0 -
c 2-7:
j
Oot>

0,11 S
O' oG>
%-bo -ijS'Z

->
' a7.3 115.6
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project
Location p I £	
I	) By ^ t\	Date	I °j 2—
Checked
Date
Circle one:

1. Data:
Drainage area 	 A =• 0< OlSfe	(acres/640)	..,*Z
~	~	1
Runoff curve number ....		 (From worksheet 2) Ol^ ~ < 0
Time of concentration .. T *= 6' H k T^'6t^hv (From worksheet 3) ~f ~ Q- 1	 W, ll),coo\ ^ ^
€'°«-	Ji lOOOL	/">	to* <-
Rainfall distribution type - "|7T_ (I, IA, II,
Pond and swamp areas spread
throughout watershed 	
4>
percent of A ( vy acres or mi covered)
\)\Z4^aJt	ru^.1^
i O/j c_ ¦ I ODo	l o o
2.	Frequency 		yr
3.	Rainfall, P (2i-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CM with table 4-1 . )
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	 csm/ln
(Use T and I /? with exhibit 4- 'f^')
c	a	—
7.	Runoff, Q 		in
(from worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 			cfs
('•¦There q =¦ q A QF )
np u m p
&torn—# 1
Stoiui H—
Storm

'Zmv



1
A c


"x
^fO -H






t'72Z
V 1,1P




0-vS



b
-------

u M
Worksheet 4: Graphical Peak Discharge method
• fliBy	Date /^gyTI °\ 2--
Project
LocatIon
Developed
Oo^
Checked
Date
Circle one:
1. Data:
Drainage area
o~wo
ViQ^c
V
0<	(acres/640) A
•*1 lOQf4t
Runoff curve number .... CN^."	(From worksheet 2) CA1^ — 	
0'IS4 .z
	IM« e-
Time of concentrat
Rainfall distribution type
ion .. T_ ** hr (From worksheet 3) | - 0 I Inr	0' ^
€'°^	/Tw&.c	IJ> io,^	'
M=_
Pond and swamp areas spread
throughout watershed 	
4
(I, IA, II, III)
percent of A (_
tyl&lZA-d
acres or mi covered)
fb<{ flXyr-clayiJ- <.
1006 <_	'	I o Dcc-x
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CN witli table 4-1.)
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	..	 csm/in
(Use I and I /P with exhibit 4- 'yj/')
1. Runof I, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor Is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('"There q = q A OF )
Mu rax p
Gtorrn it 1
StuLui Itl
Storm ^3

1
A C



tf>D


^ ¦



0- IS I
V-I$i



OP7?
v' v 3?




5 0~o



3>,7
3.7
/. o -


>

li

i7- £•
lil.h
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------

A
fit
Project *7 '.V (. tyO
Location
~YOrKSllCCl ua. iyvn.i>"v. —			
peak outflow discharge (%) known
By -\'(A
Checked
Date /4]9n 1
Date
Circle one:
4>
oo
4
U
o
c
o
C9
>
o
\Q&+-t (00 as
!
|
.i	i ¦ •_

j

i . . : •
i ' . t-H
—;—1
-T.
—-


i.:.
f-' 1 ' : 1 :

~r
1 • ' • i i






=qnV
-T


—
t - -

I-
—r—
[-4-
4-H-t

I
• • i

	
IT:
ft
L-


• I ! M
"ft





-T-

¦ 1 . ,

|
•I'll

			
i ;! ? ¦



j I I I I
-H-





f—r~
-L
1 i i

-r




+h
--U-
—

i
-H-
-M-i-
—f-
*4"




hP
1
4
TTTl-r
: i
T
II1:

'
¦
i ;
--U1

'I
rr~
-t
i
"T~T
-I
. :
ttr
T-





-L
—u
—r
I ;
¦-r-H-r
¦ 1 : 1
-I-1-
! i
1 1 ' 1
	1—:	


-f ^ '
—t-
J-
1

rap+
4-
n+


-t-



jllii'
— —T~
: ;
k-t-

¦ ¦ --
-p
-l -i-I '
-Lau.
1
u.

ttt^
i

-H-

l




1 : i 1
\ ¦ ¦ ,

rH
-1—T"h

-
•f-
-Mi
Ttr-
f -rr-h
-r
trH

TfJ


i
—r
-

-1—
! j ! i
-l-U

1;: i i
|


H-tt-
• '
-Li t
, i j ;
- > i ; i—-
_uttt
— i-r-
	!-f4-

1

-1
4-
Hr^-r


1 ,
1 , . 1 i
Ml.
i • •
¦—r-
--1 ; :
1 1 i


i
<
. —
i_L

i i 1 ¦ !


I'll.,:
, .
-4
~t]
--M
- 3 j

T:-r-nr_
1 i r



=±ti==
1
V-
¦ I 1 ! ' ! ¦
• i - . i 1

h—	
H-+4-
iTfr
;~h
I '
4
-i-
¦t
~
t-
i
i !-r-
, r-:
1-pt •
4-¦* \
:!±l
• • r —
XtLj-L
TLfclJ
+-. ' r-f
"1: T. Ill:
-*
•f-*-


1
-V-4-


i ' 1 ; ! 1

'
4U-
¦.
71
. •
h+h-
T'p!"
h—¦—.—


1 • . ¦ " ¦

	i—	
-i—i • 1 11—•-
-I—1—1 I : ; ¦


i i : •

±!t
i
~1	! 1 ' 1 1 1 ,
—T-+^~- •
-H-
i . •

, n -	(VDcAl ,
1. Data:
Drainage area JV.fl-L-..
Rainfall distribution
type (I, 1A, II, III)
Detention basin storage
O'iSb Mi
>0-0t5L mi2

2.	Frequency	yr
3.	Peak Inflow dis-
charge, q^ •••• c^8
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
(Oac II iOOcH
1^- 2>jd/
8«gte at^Re
j|
?(/r
\M

)CD,C'
\-uu
5b)
V
!5>£



0-3^.
D-3T


6. —
(Use — with figure
Runoff, Q ...... in
(Prom worksheet 2)
8. Runoff volume,
ac-ft
(Vr - 0^53.33)
9. Storage volume,
V 		 ac-ft
f>%
5.11






U 2nd stage qQ includes 1st stage qQ.
(210-VI-TR-55, Second Ed., June 1986)
-------
\»r-
Project
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
S'p CrD*!-
Location
Circle one: Present
veloped"
(0 &-¦<-
By

Checked
(Crtfjco
Date
Date
bp-yi I
4)
60
to
u
o
c
o
<0
>
o
1—i—r^T
-4-1-1
-4-hq-t
—I—i-J	J-
-L4-
-t-L
rffi
I ,
i-J-
l-nl±r
rtii
1_L
^-Prf H-H-
-T-t
ti 1
til;
I _ . -
h
T-T
' : I ! i

XI
•t-H!
-r-T
iT-t r
WW
Try
-L-Ui-
-i J--
i-H4
-H-
it
x
4-
.Ttth-
— i—
-rr1-
1;-i
H
rffjp"-!
vti-k
—IT1-'
H-+P-
i • i
4-1-
n
nTTT
-hH-
ttt
it.*
i i
T
+-H-
-t-"-
i • i ' 1 : i
j~U-
1 i
Mi: —
4-t-U-
I i i | ' i
.	- |	l
¦i—+-
MM
-4-|-
TT
M I M
-L4
i , 1 i ! • !
MM!
r.z=l
Detention ba6ln storage
' 2_
1. Data:
100*-c -'^'5^'
Drainage area ..iQ.£7 ^ ¦ D^0j_5bmi^
Rainfall distribution
type (I, IA, II, III)
TT
2.	Frequency	yr
3.	Peak inflow dis-
charge, q±
Cf 8
4. Peak outflow dis-
charge, q
5. Compute —
qi
cf s
IOo <-
I {OOoc
let
stage
2nd
I stage

I
I2^r.


5b)
\
1 | 15-$


o^T
v*6(?


—'' 2nd stage qQ includes 1st stage qQ.
6. T,
(Use — with figure
qi
7. Runoff, Q	 In
(From worksheet 2)
8. Runoff volume,
ac-ft
(vr - 0^53.33)
9. Storage volume,
ac-ft
(V - v (—))
8 r V
r
10. Maximum stage, E
(From plot)
max
o.tf

6-1)

3 1
21
1
1
1
i
9.25
lM


0-63 •
5.31 ¦






(210-VI-TR-55, Second Ed., June 1986)
-------

r
riy
WOrKSiieei ua.
peak outflow discharge (c^) known
Project
Location P&Y'i/i Pv*

9. Storage volume,
V 		 ac-ft
8
(V - v (—))
8 r V
r
10. Maximum stage, E1
(From plot)
max
(H2-
Oi°i
6-1)


?¦*


2.3 3
11'jo


1-00
Gj.O^






U 2nd stage q_ Includes 1st stage qc
(210-VI-TR-55, Second Ed., June 1986)
-------

Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
Project
Location	\fl^Y^d^)	
By
'f'
Checked
Circle one: Present A) veloped
10^ / (jrQct-t,
Date
Date
Aj2n.i
w
GO

0)

- i-^4-1-1—(-
_ J	,
Jr"
mr
J-4U
1-T+h:
Ctif
JF
+-T-
M '
ii:
_L
n rHt
-h
" i ¦
i : i i I
m
m
+H
-t-r-
^1-
-I L-
q;b
ti r4-
t-r*-

-H-
"M"
n
n-
rh
±ttt-
¦ i i
[X-XI.
—. j_;.
+,rir
T ¦ 1-r
iH4
: | j ¦ t
t+
nx
: — ri
iit±!±
-i—i—i—
	i	:	i_
-l-J-
tr
rl-
nTP"
M-
¦fH-
f-M-
-M-
¦ ¦ [ ¦ : ; >->-
4-1-
TT^

-rf
¦''''I
J-L
ZI

i I ! i !
' t > [ 1

trn
; i
-Ul.
1. Data:	WO^c
Drainage area .. tQ.
!
i
i
2.15
31-45


o-K







— 2nd stage qQ includes 1st stage qQ.
(210-VI-TR-55, Second Ed., June 1986)
-------
YV OrKSHtt L Oil* L/CkCil nvst I uuotii ow v-0
peak outflow discharge (%) known
Project
CgUas-

f
Location
P&Yi/i O^0
By -f'f-i
Checked
Date
Date
Apri i
Circle one: Presents—Developed
(QCt-t- / (CO CIS
4)
CO
cd
u
o
c
o
C3
>
V


1
4-

4—r
' t i '
J—T -1
—1	
i l
r—~

+i
— r
1
1
-4 1
1
-ri^r
i • • I
i i
			
Tj"
j— -H-J



—hH-
: i i
L-L





-4-
—r~

P4^"
*t-| .-:-j *-


«

rrrr



*
i
1
-H-




hi
-U
'Ih
il.it
¦ i i j ! 1
14
—r

t

-t1—1
U-t-
H-




h
.
"¦1
-fi
	\





+f
1
4
i4tV
11:! 1111

1
"h4	:	

- i !
~ 1 i
h"H
"T
-m
f-T—
r-r
-t"
r-r —
4-



T" "

- -J-
_ _u~
—L
in±E
¦ 1 ' j 1 ! •


-T%:'
-t-J
~L
i
-1—t T "* rHH
4-
-H-


-+-





l

1 , 1 I.I

±4
: r i 1
i
-1-
-M-

1





¦ i1 : ,


t~
j±nti±

4fJ


1
"T~ *

- —f-
! i ! ;

—t—
! | : |


-U- ¦ ¦

:TH
. i.
.+
tMt
; , . .
t ;
_.ttt
	U-
¦ ; i '

-1-L

-4-
Hr^r

i,i-
1 •


i L
_l_
r-«- - * —
T—
1
• i
n -
-i •
> *

III:!

I 11 4

, . 	
~q
-f1-
v4
St
"T
4
»
14
5±t'
— ; 1 1 1
X-ILJ-O
'
-i-t-r "


:±tfc:
-H	Ml'

-t—	
—i -j-
- r-^-
r' T I

t-+
1

: 1 1 M ; I
•' 1 		

- 1
ft-.
(1 ' • ! - : -
KT^tj
r
"1

*
r ~
-t-H-
1 1 ! '

: I ' ¦ :

	
-
~ •
: i
r-: ri
— ; i ,
44-
4--t-r^-
i ,.
-1-
¦ '
Detention basin storage
iwDit- l
10m..
1. Data:
Drainage	area	"
Rainfall	distribution
type (I,	IA. II, III)
O'iSG
D 0 <5 L
mi
ml2
2.	Frequency	yr
3.	Peak Inflow dis-
charge, •••• cf8
Peak outflow dis-
charge, q
5. Compute —
J-/ 2nd stage qQ includes 1st stage q£
cf s
(Oac II {(10a(
1^/ 2)jd/
B-tragfe sJt^e
||
\Mc
ii
-Ofs
'¦vt-v
5b)
i/




0'iL
O'fH


V
«• T	
r q
o
(Use — with figure
ql
7• Runoff, Q ••••«« In
(From worksheet 2)
8. Runoff volume,
Vr	 •
(Vr - 0^53.33)
9. Storage volume,
V 	 ac-ft
-------
1/
Worksheet 6a: Detention basin storage,
peak outflow discharge (%) known
Project
Location
Circle one: Present
veloped
By
< f
Checked
[Qa^ / (tsOauL,
Date
Date
h(yu I
v
oo
<0
u
o
c
o
CO
>
4>
¦H
•14
-4
-1-4 -L
L.L4—L
-L
-I—L
TUT
-U_±!_i.
n
TT+r?
r±i+
s?
"^nrr

-H-
T

r-r
as
i : -L
-i i.
-H-
tt
-H-
_i_L
±tt
— l-
-H-

TttTT
-l_L
m
"PTTT

44+4-
T~T
i . • ; .-l.
—i—i—i—
-Li

! ' ' i | ¦ |
it".
(I ' •
H'"

J;§
rL
-H-
tx!:n *,-
^ ! ! i t r
I ' ' T
Tti-!-
m
-h
— i H-y+"H
+*nr-r

-M-
-H-h1-
JlL
-r^-r
T-r
Detention basin storage
•
1. Data:
tOO^c -£>.'5 6«4-
Drainage area . .10.^7 " D'Qt S^mi^
Rainfall distribution
type (I, 1A, II, III)
TT
2.	Frequency	yr
3.	Peak Inflow dis-
charge, •••• cfs
k. Peak outflow dis-
charge, q
5. Compute —
qi
cfs
lOoe
1 [OOoc.
1st
stage
2nd
1 stage


a^\r

V-b
5b)
V
II 1^5


oil
I).V>


6.
(Use — with figure
qi
7. Runoff, Q	 in
(From worksheet 2)
8. Runoff volume,
ac-ft
(vr - 0^53.33)
9. Storage volume,
ac-ft
(V - v (—))
s r V
r
10. Maximum stage, E,
(From plot)
max
EMl
0-
6-1)


3'!
1

3>-o?f
3o-^


¦*o
ll- U






—^ 2nd stage q includes 1st stage q
(210-VI-TR-55, Second Ed., June 1986)
-------
SOUTHWEST REGION RESULTS
-------
Worksheet 3: Time of concentration (Tc) or travel time (Tt)
Project ME ¦
Location tQ^_ \Q 0 


hr

700
0-0 b

0- q7
	 ft
	 ft
a
14. Hydraulic radius, r - — Compute r 	 ft
Pw
15.	Channel slope, s 			ft/ft
16.	Manning's roughness coeff., n 	
(0&K

JloO
u ¦ o 3

7
Compute V 	 ft/s
	 ft
hr
20. Watershed or subarea T or T (add T In steps 6, 11
c	t	t
(210-V1-TR-55, Second Ed., June 1986)
, and 19)
-------
u
tfi*
r
Worksheet 3: Time of concentration (Tc) or travel time (Tj)
Project	'|MP
		j	
Location 10 e-c

(OO
By
Checked
~r
Circle one: Present De^
Circle one: . T -
c _
Date
Date
/rpnl 9

T through subarea
t	0
NOTTS: Space for as many as two segments per flow type can be used for each
worksheet.
Sheet flow (Applicable to Tc only)	Segment ID
1.	Surface description (table 3-1) 		
2.	Manning's roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L _< 300 ft) 	 ft
4.	Two-yr 24-hr rainfall, P^ 	 In
5.	Land slope, s 	 ft/ft
t	T 0.007 (nL)°'8	_ T
b. - 	-—^		Compute T 		 hr
„ 0.5 0.4
2 6
Shallow concentrated flow
Segment ID
7.	Surface descri-pt.lon^(paved or unpaved) .....
8.	Flow length, L 	........ ft
9.	Watercourse slope, s 	 ftT/
10. Average velocity, V (figure 3-1) 	 ft/t
L
11 T
t 3600 V
Compute T
hr
segments.
10
(00


denS-e
#e t (	Sf»&mf»nr ID
Segment ID
Y/	$Ji±	KOQcy^fi
ti.6nal flou airea, a •	I ••••••• • ft

12.	Cross sec
13.	Wetted perimeter, p^					ft
a
14.	Hydraulic radius, r - — Compute r 	 ft
Pw
15.	Channel slope, s ........................... ft/ft
16.	Manning's roughness coeff., n 	
17. V -
1.49 r2/3 s1/2
18. Flou length, L
L
Compute V	 ft/s
	 ft
19
3600 V
Compute T
hr
<)oo
0-0%
20. Watershed or subarea Tc or (add in 6teps 6, 11
and 19
o.3i
Jioo
4
6--J0
s/o/u?
/Ta A O	£-oy) Ce-L^jviiXt-tl J'b
&	(210-VI-TR-55, Second Ed., June 1986)	r
pfV (0 fit,', s'ifc ,	^" ^''hY ^ l0° ft
\) f lOdc-t £ij'e ! df' ^7a' l/^k(	2DO -j-i ¦
' /
ot 5
hr
-------
iK'c/ h(
O UfhiiiltCL Oi AliUC OA COAIi-Clici uuvi« v-^p/ vyi ** -
C
(j^KdbVlJ\oJ,
.1j£t

Location
/£> jf)V
By
Checked
Date
Date
'y~i
I f-z
Circle one: Present Dc^^jafSed
Circle one: T_
through subarea		
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow s
Segment ID
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) 	
2.	Mannlng'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L 300 ft) 		
4.	Two-yr 24-hr rainfall, P_ 	
ft
in
5. Land slope, s 	 ft/ft
0.007 (nL)°*8	- , _
Compute T 	
6. T
„ 0.5 O.i
12	?	
hr
nts
Of
~~ -Shallow concentrated flow	Segment ID
7.	Surf ace t ion (paved or unpaved) .....
8.	Flow length, L 	TTrTTT-.-^j^.			ft
9.	Watercourse 6lope, 6 	.~?Trr77Tr'r>-..-^£t/ft
10. Average velocity, V (figure 3-1) 	 ft/
Compute T
11 T -
t 3600 V
Channe
. .. ool wW-tM ;	fos
1 flou I	|	Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, p 	
14. Hydraulic radius, r - — Compute r
ft
ft
ft
15. Channel slope, s 	 ft/ft
16. Manning's roughness coeff., n
17. V -
1.49 r2/3 s1/2
18. Flow length, L
L
Compute V 		 ft/s
	 ft
19. T
3600 V
Compute T
hr
A
20. Watershed or subarea T or T (add T in steps 6, 11,
c	t	t	\
(^)	SVojkj? /cv J/ji? jT ^/=
(?) P'V 6Ua I(oia/ l-v^Ccla tyu'&tf -f/ovO
19)

y-A	, /~\	/ (210-VJ-TR-55, Second Ed., June 1986)
tOyic ^n'<2L	cf -(rctrd h
t

]0eAXAf-

too
2	^'-'AJL.CJ!
-------
Worksheet 4: Graphical Peak Discharge method
Project
Locatlo
x_ By f< 4
a	{A)	¦	
L
Circle one^Present Developed
(0&. KOo 	 /
Rainfall distribution type	f^, 	
-¦ 0,7 0
100 	!	
Pond and swamp areas spread
throughout watershed 		
percent of A (
r	m -
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
' a
(Use CN with table 4-1.)
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	 csm/ln
"J
(Use T ^nd I /P with exhibit U- ) )
c	3		^
7.	Runof f, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, 		cfs
('••There q = q A QF )
np u m p
tO
Storm
-33-
3-
2-5
too
jLUL Ui
IPt-
1.33 / ¦ 3> 3 •
0-5 3
o-53>
M.

d< 2 &• 2
/¦ o

-J>
^ tl
6-U

c- ^7
340 f7°
¦ 6
^ 6
1.25 '5.^ i
D-4
(210-VI-TR-oo, Second Ed., June 1986)
-------
Project
Loca
Worksheet 4: Graphical Peak Discharge method
C-^t- C 4^ 7° 'V	) By 4 . Date Apr/1 ^2
ti„ Vj
Checked
Date
Circle one ^--"Present Developed
Cfo/f	O
Drainage area . .	 A
Runoff curve number .... CN
O 0\S(> mi2 (acres/640), Aoo ~ .&< I S 6 tw,
:2>
(From worksheet 2) CaJp
Time of concentration .. T "Dbz/f. cQ-irtbr (From worksheet 3) — _ £),Z(	7" -
IV / ic&f	N	5|0 	^	 / ty°° 	L	
- ¦ - " " — • -- -----	^ (CUQVi -n. Ill)
Rainfall distribution type
Pond and swamp areas spread
throughout watershed 	
4-
percent of A (
m -
acres or mi
I
IO
2.	Frequency 		yr
3.	Rainfall, P (2-4-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CN uitli table 4-1.)
5.	Compute I /P 	
6.	Unit peak discharge, q 	 csm/in
(Use T~c and ^/P uith exhibit 4- *1^ )
7.	Runoff, Q 		in
(Frora worksheet 2).
8.	Pond ane swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('.•There q = q A QF )
np u m p
Sturm—n4-
3-
5-5
fic^r^d' /OP
Sturm ^2
0-11%
o*n%

0- 3
55
/ 9 5
0*5
o¦ b
/• o
covered)
fX^i/dbyy jQ	J0o\
jLU L IU

->

o ^

6-| ?
0

3 '0 .
a |0
o .
].D

D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project
Location
(&>9- I ^Lj/l-Pyyicru^o )
& (a)
By 'f~< !-\
Checked
L
Date h?*~l I ^ 2
Date
Circle one
1. Data:
Devel

A - O -O^SC, mi2 (acres/640), Aioo ~ PIS6 w
**\0^	:		J
Drainage area
Runoff curve number .... CN^»	(From worksheet 2) (ZaJp ~ .$"^7
Time of concentration .. T *= tf'6Z/T «0^2hr (From worksheet 3) — _ \ f - n. In
					T^~£~	tt„ • .'O 		J V"
RainfaLl distribution type
Pond and swamp areas spread
throughout watershed ......
4-
A| II, III)
percent of A (
tn
acres or mir covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		In
a
(Use C.N with table 4-1.)
5.	Compute I /?	
a
6.	Unit peak discharge, q_ 	 cstn/ln
(Use T and I /P with exhibit 4- )
c	a	—-7^~
7.	Runoff, Q 		in
(Fron worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor Is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('-There q = q A QF )
p u m p
Xcte-J- to
pyo?ClA^ 100 1 D-evdoy? / 0
$€fC/op !
«_» L O t ui " L
n



1 ¦ 5o
5^6
/
31-7 -
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Project 	
Location -5- ^
Worksheet 4: Graphical Peak Discharge method
ff^AF C ^	Cn^rj ) By 1^' /-f Date
'		 Checked 	 Date 	
iTyg*	
Circle on.;^-"Present Developed
(O^ I0O,h_	'°^<-
Drainage area 		 A
D OlS& mi2 (acres/640), Aoo &¦ I S & w
~'OcCL ^ ^ rW
Runoff curve number .... CN^- / ^ (From worksheet 2) CaJp ~ (J^O	
Time cif concentration . • T	€X^Zhr (From worksheet 3) -j- ^ fl>%\	T - ^T7 n
|p 	/^J- /-^nV	^,0~ (Z^J— y	Q^-
- •			 -	Xi^/gy ii, hi)
Rainfall distribution type
Pond and swamp areas spread
throughout watershed ......
4-
2.	Frequency 		yr
3.	Rainfall, P (2-i-hour) 		in
4.	Initial abstraction, I 		in
(Use CN with table *>-1.)
5.	Compute I /P 		
a
6.	Unit peak discharge, q 	 csin/in
(L'se T and I /? with exhibit: 4- *"£, )
C	3		-
7.	Runoff, Q 		in
(Frora worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('•¦There Q 3 q A QF )
u m p
: A ( (1/ acres or mi
m 7 ¦
covered)
\cte~i- iO
Px^iTlA^ !0D
tO
flc(^C/ofo JOt

j Lw LUi •' *-







		^
/¦2I
/0 6b
76 f_|
^2-fZ


(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project

LocatIon
^ lM

CT^°
7"< l\
Date j/npr/ I ^ 2
Checked
Date
Circle one^-^Present Developed
(Oiu^y
/
J

Data:
Drainage area
	 A - O -0\SL ml2 (acres/640V Aoo - P-15 6 w
**\OcZI			J	~
Runoff curve number .... CN -		 (From worksheet 2) CaJP -
'V
Time of concentration .. T = Q-bl-fir	(From worksheet 3) -p = £)• I ]/l{ T - 0'J)Q
€'C /,£> V /i	1a),0 	 y ii00 	
— " J'~~	 - 		I")	'
Rainfall distribution type
Pond and swamp areas spread
throughout watershed 	
4-
percent of A (
m
acres or mi

-J>
o-z 2,^
o.
I ^2
0-O Cf
5 00
33 o
is
/•$

D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project
Loca
(jyiAA L^i LA
L
t ion
Circle one :^1?resent Developed
: (O^c IOO„<	'°^<- 1°*^
1. Data:
Checked
0~L—3
Date J\prI \ "2-
Date
Drainage area .......... A 3 & Q\SC> ml^ (acres/640). ^'Oo £?• / 5 6 im <
I	.	- ^
Runoff curve number .... CN^- 	\Q— (From worksheet 2) CLflJp ~ 'f>-2
Time of concentration .. T	^-fohr (From worksheet 3) — „	-r - % C,h /
€(P ~~7l%	,	^io 	/ T°° 	—
Rainfall distribution type -	A^AT 11» II][)
Pond and swamp areas spread
throughout watershed 	
V-
percent of A (
m
acres or mi

2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CM with table 4-1.)
5.	Compute1 I /P	
6.	Unit peak discharge, q 	 csm/ln
(Use T ^nd I /P uith exhibit 4- "T )
c	a	—
7.	Runoff, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('••There q = q A OF )
Mp u	p
(O
Storm—64-

c5-3 ¦
pKlHTLct' /OP
-Gturui i/2
covered)
Q^ydtyy JO fievC/op f^O
Sturm
=tB
->

/¦ o
/,2l (oS 3
O-iS
o,(S I
0-O(o
0 - 0 (o
3oo 33°
IS I I.Sr

I Lt. ol
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet ba: oeieiuiun uasm diOi W,
peak outflow discharge (t^) known
Project	By -t'rf	Date /fyn I
Location Pe/ts t			 Checked 	 Date 		
Circle one: Pre«entL^)eveToped—_		{Q^c, ( (00 etc	
4J
00
m
c
o
<9
>
-i-. —14-:-.



i . • .
i : ¦ 1
i' i
f—r
t
—J—u


-fi
t
1
J. J.
1
i
tr^r!-
: 1 •

—5-^J-
... i

- -—		_
i
" 1
:
--HH


r"
1 1 1
; i t
-L-
1 1
"¦f-r




1
—r
-44-^-

—r^-r-

j


rrr


1
! ; i
1
-4-+-





i
1 1 i


) I,!.
• 1 i i > •
I


i ' i :


I
1 1
i





i
i
: 1 |


1 i ¦ i,i.



.
1
4-r








-4-

M

, . ! ii!.
~h	

l ;
1 : (
r"H
~r
-1-
r-i
4-
1
-H-*r
. * l :
+
r-
i

T "

_ -_i_
-4--T-
.1 J.
I-'"

• 1 1 i I
. ¦ i.1 :


l
X
-H
•
-4- •
L_L
I
iqucn:
4-
) |

* ~T




1' ::' ' rt-
i

1
L4-
4*
I! ..i.
4-
( 1"
-i-
r




, ! I !
—r^-
1

¦\-
-r-J
^T+ir
^ii±p=
^f-
i
_l.
+-
1


' i ¦ i
- i i ¦ i—¦-
! !*' : 1
' 1 *
=F— -
-


uj
L_LlX
	
^-4-
H- l
Ti^
- ' } ; i —
"'"r rr

. 1

-U

,
4 ?



4--
-
-• • * —

1 t
• 1
H ¦
	L
i
•-lll.l
—-H-l-i—



1-
T-
4-^-
pi:

-t; r^: ; - i-
i, i 1 r-
; -j-H-


-Tf\
-

i
-1—

t—4-1
r-: H"i|
- n





• i i i I '

, 1

l

-
h-


-+4-
1 *

—J—


. .


!
t ¦
-i—
1
"-^-1	1—





	
¦hi: ¦ -
-j-' ¦ * •
"h
i :



! i : : i 1 :
4-^
i ¦; i



T
• , ¦ i.

!.. l
1 . i


¦-
Detention ba6ln storage
1. Data:
uata-	IWDcCc < O-lSb till *
Drainage area J0.4L. - 0 0 '5b
- xt
Rainfall distribution
type (I, 1A, II, III)
2.	Frequency ...... yr
3.	Peak inflow dis-
charge, .... cfs
4. Peak outflow dis-
charge, qQ .... cf6
5. Compute —
—^ 2nd stage qQ includes 1st stage qQ.
(Qat. II lf)0a(
siragte

II
7ur

i
/
z-z?
15^1
5b)
V
b'!1? I I.*30-


001 |
o-&i


V
6. /
* Z>.
6-1)

^¦6
a. 6



5. o


0 v>.
1> b






(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
Project	°		 By
Location	&^Q
Checked
Circle one: Present
veloped
lOcbu fcn/W
Date
Date
hfh^ I
o
60
<0
u
o
e
o
Q
>
0)
a*
T-
¦+
m
4-L
LL4-4-
-L-,
-L_!_
4-L
-U U-
L J—1.
MT+rl
ttt
-H-
±j:
Ttl:
M '
11:
_l_
-i t-
M
- +-*-
rH
	l	!_
T—r
"TT
-H-4
-r t "* r—f
x-Ll.
J-- ;
!-rrr
Lr:
rLi

±L
--M-
:ii±
_J_L
¦irr
,-!_U-U
I
¦*- -- r-
xiiLi-i-':
—: H-i t-t-l
a
-t-*: i	r~r
| i ' '
nt
i I :
JJ
m
TT
I I ! !
i ' 1 : i
i-i-L-
-+-T-
1 T~
-»-4-
1 i " ! , 1 ¦
X-L
! ¦ " I : 1
1—~
i±z=
-hH-1-
' i . I 1 1 • I
-i-i-H

Detention basin storage
1. Data:
(OO
- O-' 5 6 fu
¦
Drainage area . .IQ.	~ D-O! 5j> ml^
Rainfall distribution
type (1, IA, II. Ill)
TT
2.	Frequency	yr
3.	Peak inflow dis-
charge,
cfs
A. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
«i
lOo<_
( O£>oc
1st
stage I
2nd
j stage
1

^f
Plr


wiring
5b)
j _i
hzl i/C'53


0-&
0-)Z.


6. —
(Use — with figure
ql
7. Runoff, Q	 in
(From worksheet 2)
8. Runoff volume,
ac-f t
(Vr - 0^53.33)
9. Storage volume,
ac-f t
(V - v (—))
s r V
r
10. Maximum stage, E,
(From plot)
max


^•33
1 V2]
6-1)

/,0
1-0
1
1
1
1
i
I
ot2?
£.32


021
2 2$






—' 2nd stage qQ Includes 1st stage q£
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet ba: ueienuou u<^m siuiab^,
peak outflow discharge C^) known
Project M.P (Go^j0	^ By "t '/-I	Date /4|?
Location	tO^O r	Checked	Date
n
Circle one: Presents-Developed
Q>
60
<0
a
>
f Q^-t_ / fQQ ot/"
tXiriz
^XlI
T" i
Tin
. Ll_
.I--, .
-U-
4-L
+—I_^-L J_l-
+ --L
It
r±i.-h
14-
4 {- .-f-M-M-j-
TO-JpiT
: -f:T?
TT
m

:rr
J—L
-f—H
-f—r-' H"
rr
I-; U-i_:
r~r
it
£
-14
Tt
SB
rtt
X- LJ "
	1 | ¦
lit:.!:'
EOT
i : i
-i—L
rr
rv
i • i
H-r-r
-rr
±t
-*-r-
J-i-
i 1 J
i 1! 11
rr
'''I'
-H-f-
1 i , ! I ' " '
i l 1 1
Detention basin storage
IVOct- c
J0.OL.
O'lSto
0 o\5b
1. Data:
Drainage	area	^ ~
Rainfall	distribution	^
type (I,	IA, II, III) - IX-
Mt
ml2
2.	Frequency	yr
3.	Peak Inflow dis-
charge, q^ .... cfs
k. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
(Oac (OOd(
siragte
2V)

!l
? lif
f

9'6(d
\
5b)
\!
01 9
\ },$v


o-o3
\0-0^


1
6. —
(Use — with figure
7. Runoff, Q	 in
(From worksheet 2)
8. Runoff volume,
ac-f t
(Vr - 0^53.33)
9. Storage volume,
V 		ac-ft
s
(V - V (—))
x s r V
10. Maximum stage, E
(From plot)
max

O'S
6-1)

hi
/







—'1 2nd stage qQ Includes 1st stage qQ.
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
Project tA P~ ( (>0	) By
Location	&^Q
Checked
Circle one: Present
lOou (wOcu.
Date
Date
Aj2>lI
v
00
<9
u
o
c
o
<8
>
Q)
Tixrr
-L.
L
4^-Q-r
.LLi-L
( I ! I i—1-
&

hie
-t-H
:r-z
i l.
I ¦
t-r
tt
T
+-1-
.Titu
— i-.
-LL
-1—r-4-
| i ' I
-4—1-
-u-L-L

mu
^Tm:
-M-
i::;
TT
J-4-
I I I
-TT
J_L
1 1 I ' |
—^L
fH-
—4-f-j-r-
rhSf
-:.rrfr
TP
! I '
Jl]
111,
lie
H::rr
1- • —
"H-
xs
; * 1 ! -t -f~r
:rfrt±pt
H"i t-f-R"
-It- — .-!
+-H-
¦ l I ' '
tSER
-M-
i ¦ i 1 1 : i
-—i-ii -
1. Data:	,L/l^ < '	- ^
Drainage area .. iv.fr? ^
Rainfall distribution
type (I, IA, II, III)
Detention basin storage
V
(00^ C
..IQ.Z? A_ - D.OISLvA2
TT
2.	Frequency 		yr
3.	Peak Inflow dis-
charge, q^ .... cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
qi
— 2nd stage qQ includes 1st stage q£
f Ooc.
(<7 Ooc.
1st
stage
2nd
i stage
1

o^r |
!V


1 fr-n
5b)
1 2r
!>u



O'l b
O'lo


6. —
(Use
with figure
Runoff, Q .«•«.. in
(From worksheet 2)
8. Runoff volume,
•c-f t
(vr - 0^53.33)
9. Storage volume.
ac-f t
(V - V (—))
8 r V
r
10. Maximum stage, E|
(From plot)
max
o-v 2]
d'l ^
6-1)

/ V I
/•f
1
i
1
1
j
1
HL
llbt>


o-w







(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 6a: L/eienuou	dil/l w ,
r	peak outflow discharge (c^) known
Project
,	C) By Date /4f?n (
Location		 Checked 	 Date
Circle one: Present^i)eveloped--^^^ 	/ QO-t~ ^ (QQ cxf	__

o
-•h-Hjf:
inxnr
-LL4-L
..i—,
I , .1. J-l.l

t
-f
-I I-
T
tTRJ,
itr.i.:::*-..
. i . . .
iLIiiIk
:r.
—t-ry
TT
"TT
¦H-
:£

-t T ¦* r~ +—*¦
iftK
u
i-T-
X-Li-
K
r1-
it
s
iti
itt
a
-14

-U-4-H-4-L-
X'lu.:
_. h;-!
- r-«-
t-H-r
i-t±!±
-U-
-4—L

Ti-
ttr
~TT*
u
4-L-
4-H-
-+-T-
rr
n
iii'
nrr
r-r
:¦ ! i T i ; :
I I I
-i-H-
-+-H-
Detention basin storage
ivDcf- l
JO.aL.
1. Data:
Drainage area .11/Q-L.. ¦
Rainfall distribution
type (I, IA, II, III)
0-lSb
0-o^L
tUl
«13
¦I
1. Frequency
yr
3. Peak Inflow dis-
charge, .... cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
(Oac II lOOfli
lk/
sragte aJthge
II

l*r

It'7
177.22
5b)
U
O-t*?
¦uw


O'O)
DO 2

\
I
y 2nd stage qQ Includes 1st stage qfl
6. 71
(Use — with figure
ql
7. Runoff, Q	 In
(From worksheet 2)
8. Runoff volume.
ac-f t
(Vr - (^53.33)
9. Storage volume.
ac-f t
(V.
ViT»
r
10. Maxlaua stage, E
(From plot)
nax
OS
O'S
6-1)

)• £
IS


1*5
(i-tf


D-L7,







(210-VI-TR-55, Second Ed., June 1986)
-------
Acs
Worksheet 6a: Detention basin storage,
peak outflow discharge (c^) known
Project
Location
/ Ux
Ov-o
\ By ^j_hfv^A
Checked
Circle one: Present
veloped
lOo^f (uV^
Date
Date
Aj2>lI
v
00
CQ
u
o
c
o
CJ
>
a)
T
lx±
¦ LL-U- -I-
-L-L.
TT
-H-Kt

TT

1—r
-H-
tt
-14
U-
i i .•
XI
rr
t
4—i—1_
J_L
I I i I | : i
nr
-!—•—L J_l..
iiiti-
EH
"i tx r
iftt

r j-
$
xti
i : i-
-1-
tiTh
It:
t-i1
a:
TT
zttg
Tr
TE
Mil
-rf
1 '¦ I • i 1
I I I 1 I
-h
"T' — r
im
-t; rL:
——r

x-.Li.r.
K-l^i
4-L-
;tpt
+-l
-ri

T-r-r
-t-r-
444-
r-M-
-M-l	U
i • i:
I i 11
J	l_
1. Data:
(OO^C	^.'56 L
Drainage area ..IQ** D-Ot SL ml^
Rainfall distribution
type (I, IA, II, III)
Detention basin storage
V
TT
2. Frequency
yr
3. Peak inflow dis-
charge, q^ .... cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
qi
lOo c
(OOoc
1st
stage
1 2nd
i stage
||

[i
(n-u
5b)
V
hL(
i \0'b
1

O'O^
0,(\


6.
(Use — with figure
qi
Runoff, Q «•«... in
(From worksheet 2)
8. Runoff volume,
ac-f t
(Vr - 0^53.33)
9. Storage volume,
ac-f t
(v. - Vv »
r
10. Maximum stage, E;
(From plot)
max
0-5
O'tf
6-1)

1 ¦* !
| It
i i 1
.1
{•5D
Cp-00


OV?
7<3f.






— 2nd stage qQ includes 1st stage qQ.
(210-VI-TR-55, Second Ed., June 1986)
I
-------
NORTHWEST REGION RESULTS
-------
o
Worksheet 3: Time of concentration (Tc) or travel time (Tf>
Project	Date
Date
Location
Circle on
Checked
resent TVvpI np^H

Circle onef^T^^ T£ through Gubai
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow segments.B
Segment ID
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) 		
2.	Manning'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L 300 ft) 		
4.	Two-yr 24-hr rainfall, 	
5
ft
in
Land slope, s 	 ft/ft
0.8
6. T\
0.007 (nL)
„ 0.5 0.4
2 6
Compute T
hr
Shallow concentrated flow
Segment ID
7.	Surface description (paved or unpaved) 	
8.	Flow length, L 	 ft
9.	Watercourse slope, s 	 ft/ft
10. Average velocity, V (figure 3-1) 	 ft/s
11	T - L
*	t 3600 V
Compute T
hr
Channel flow
Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, p 	
	 ft
	 ft
a
14. Hydraulic radius, r - — Compute r 	 ft
Pw
15.	Channel slope, s 			 ft/ft
16.	Manning's roughness coeff., n 	
17. V -
1.49 r2/3 s1/2
18. Flow length, L
L
19
3600 V
Compute V 	 ft/s
	 ft
Compute T 	 hr
(210-VI-TR-55, Second Ed., June 1986)
segments.[
pevdop









300





$>0*7








/


/


/


/


/


1





I








[


/


/








1


I, and 19)
\
/ "
041 In- ¦
0-
br

Cn KX t ^
-------
Worksheet 4: Graphical Peak Discharge method
Project 1 ydnOV)/ fzJrftPod By	Dat^p fj I 4^
LocatIon jUkJ	
Checked
Date
Circle one^ Present Developed
I. Data:
()) f
V^evClo/),
-1-
ey '
Is* 0\s)
Q-	





"



*«s.
3-0





/' 33
0< o& 'b

t, o62-


o
O'O2?
fy.zi •
0-o7_
0• 1
\ <
0. 1

H>-b .




o-Y>
-
O'S
2-4.


1, 0









0'!\
£7. 6


D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Project I
Location _
Circle one
Worksheet 6a: Detention basin storage,
peak outflow discharge (t^) known
(U PA foCf fe/) '^/fodd - By -f< l-\
Checked
Date /4l?n I
Date
Preseti
O)
60
03
c
o
(0
>
0)
velope

-f-' —4--L
M.4-, • n
+
El
LLi-L
-UL
XLT
' J_

i_i-1
a..

-i i-
n . , .
l-|	-
mm
ttt
tHSEEE
m
ir
i : j-
-l-r-
--i-, —
3iB
-+ : ru
¦ i-r.
-M-
tt
rtx
Hit
— i—
¦ -r ~l—r
XJ: UJ.l:
TT
¦ntSEf?
i I ;
H
rtm
-R4+
TT
-M-
-r-h
-M-
I I I
I I
I I I I | ¦
—-i—L-
-—r+-

t-H-
Detentlon basin storage
V
..W. A -0 ¦oo i4 ai^
1. Data:
Drainage area ..JCVi-. Am
Rainfall distribution	^
type (I,	IA, II, III) - li-
~P^rui^ I1
2. Frequency
yr
3. Peak Inflow dis-
charge, •••• cfs
(From worksheet A or
A. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
*1
—'1 2nd stage qQ includes 1st stage q(

aragte
?

r
p.6$
Q-b'X
5b)
JE2
if
D>
kg.
o<
o-i(>
6.
8
r <1
o
(Use — with figure
ql
7• Runoff, Q •••••• in
(From worksheet 2)
8. Runoff volume,
••••«••••• a
(Vr - (^53.33)
9. Storage volume,
V 				 ac-ft
8
<*. " Vv »
r
10. Maximum stage, E___
BAa
(From plot)
ob
of 3
«>


2- b .


0< 2-/
o -iz,.


0'h .
O'O<\


aj/a
h)jh


(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 3: Time of concentration (Tc) or travel time (T^)
Project JQjLj ^ P {^OU!3 I up^'n^) By f]	Date ip>£LI2
ii±		Checked	Date
Checked
Location
Circle one: (^Present Developed^
Circle one:^T^) Tt through subarea				
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
Include a nap, schematic, or description of flow 6egment6
Low segments.	/
I p3\/Mo^juA
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) .	
2.	Manning'6 roughness coeff., n (table 3-1)
3.	Flow length, L (total L 300 ft) 	
4.	Two-yr 24-hr rainfall, Pj ...............
Segment ID
5. Land slope, s 	 ft/ft
.0.8
6. T
0.007 (nL)
„ 0.5 0.A
2 6
Compute T
Shallow concentrated flow
Segment ID
7.	Surface description (paved or unpaved) 	
8.	Flow length, L 		ft
9.	Watercourse slope, s 		ft/ft
10.	Average velocity, V (figure 3-1) 		ft/s
11. T.
3600 V
Compute T
Channel flow
Segment ID
12.	Cross sectional flow area, a
13.	Wetted perimeter, p 	
14. Hydraulic radius, r - — Compute r
15. Channel slope, s 	 ft/ft
16. Manning's roughness coeff., n
17. V -
¦ /0 2/3 1/2
1.49 r s
18. Flow length, L
L
Compute V	 ft/s
	 ft
19. T
3600 V
Compute T
20. Watershed or subarea T or T (add T in steps 6, 11
c	t	t
(210-VI-TR-55, Second Ed., June 1986)
Qyhyy)
U»f)6vC
0,0?-
, and 19)
-------
Worksheet 4: Graphical Peak Discharge method
Project ( /1C. Srj-e
tlon j\j iIa)
	 Checked
f1) P-e/Vi D \a-o
Date
Date
JpnLl?-
Circle one: Present Developed^
(i£^**pj0/uo ¦
1. Data:
Drainage area 	 A^ =» Q'OO ( b mi2 (acres/640)
Runoff curve ^raber^?... C^,« 60/tZAj^ ~ (From worksheet 2)	—L—/~^j) —2
Time of concentration .. Tc f) ' ^ ( hr (From worksheet 3) ( J) O •( ^ k r
Rainfall distribution type -	(\
Pond and swamp areas spread
throughout watershed 	 ¦
(I, Ik, II, III)
percent of A (
¦	m
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		tn
4.	Initial abstraction, I 		in
' a
(Use CN with table 4-1.)
5.	Compute Ia/P 	
'i, j-' ' '
6.	Unit peak discharge, q 	.. csm/in
(Use T and I /P with exhibit 4-^7A)
c	a		L-
7.	Runoff, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F^ ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('Jhere q » q A QF )
Mp ^u m p


fx ^
/WUo-j/O
OlOiIQ " i




1
2>,o


>





|.33 ¦
dm I

c.So







0-o3 .
0
-------

Project
Location
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
\dc *7y\r Co/yo^M >°^)a	By
fr! ,U-.
Date
Date
hp-U I .
Circle one: Present
veloped~>
Checked 	
1AX?
c'v
dM
a
00
m
i-
o
e
o
(8
>
01
-U
4-r .
vrMx
441
. LL
J-J-
imatth
¦ Tl :
fi=
"TP FT"

tl-pr-^PT
it" ' '
t I
Tl '7
— +--
rh

tff
TT
-H-4

¦| T
iTU
Tltl
¦+71"
4 r
ru!
-4
-H-
tt
Tt
-4-L
:tt
f4
• 7 tr

TT
-TitSE!?
1 • 1
-i—1—
ffiftr
I I ; 1 : ¦
¦4++
4-M-
-t-f-
-t-r-
| I I 1 i
ill!
J_L
1 ' ' ' |
±3±
-H-
-+-H-
Detentlon basin storage
1. Data:
Drainage area . .J.^V ^
Rainfall distribution
.J.4& A - jwy*l2
type (I, IA, II, III)
. IA
2.	Frequency	yr
3.	Peak Inflow dis-
charge, q^ •••• cfs
(From worksheet 4 or
4.	Peak outflow dis-
charge, qQ .... cfs
5. Compute —
ql
—'' 2nd stage q0 includes 1st stage qQ.

Zi4Ate/l')
s r V
10. Maximum stage, E,
(From plot)
max

0.11
6-1)

O'G
/¦
1

0 'OCj



04)3-
Ooz






(210-VI-TR-55, Second Ed., June 1986)
-------
Project
worKsneei «*: nine 01 Luntti.uunu.,
Vf A *,A " ¦ *-*
C%)\aJ lAXJl/Sts] CaJ^- 	 By HH:
L'
Location
10 C^, \()0
By
Checked
Date
Date
y~>

y -¦

ar^
CO
Circle one: Present Deyj
Circle one: T
'ed
T through subarea
t	&			
NOTES: Space for as many as two segments	per flow type can be used for each
worksheet.
Include a map, schematic, or description of flow se^graents
' <£H/
Segment ID
Sheet flow (Applicable to Tc only)
1.	Surface description (table 3-1) 	
2.	Manning'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total L < 300 ft) 	
4. Two-yr 24-hr rainfall, P_
ft
in
5. Land slope, s 	 ft/ft
, _ 0.007 (nU°*8	_ ^ _
6- Tt	0.5 0.4	C°mpUCe Tt 	 hr
?2	f			
-Shajlow concentrated flow	Segment ID
7.	Surface d^&ecigtion (paved or unpaved) 	
8.	Flow length, L	.		 ft
9.	Watercourse 6lope, 6 	rTTTV-r.^ft/ft
10. Average velocity, V (figure 3-1) 	 ft/
Compute T
3600 V

\Xe,i*sie
-

(OO
'b-o
#.o
-------
Worksheet 3: Time of concentration (Tc) or travel time (Tt)
Project ^7'^, M'fj {jJMh/JLf&	 By~j~i\\	Date	I
Date
Location {Q , I 0 O
Checked
^"2
Circle one: P^fes^j
Circle one:
V3?
Developed
T through subarea
NOTES: Space for as many as two segments per flow type can be used for each
worksheet.
6. T
0.007 (nL)
„ 0.5 0.4
2 6
Compute T
Shallow concentrated flow
Segment ID
11 T m	¦ ¦ ii
* t 3600 V
Channel flow
12.	Cros6 sectional flow area, a
13.	Wetted perimeter, p 	
Segment ID
18. Flow length, L
l q t _ 	1:	
t 3600 V
Sheet flow (Applicable to only)	Segment ID
1.	Surface description (table 3-1) 	
2.	Manning'6 roughness coeff., n (table 3-1) ..
3.	Flow length, L (total Lj< 300 ft) 			ft
4.	Two-yr 24-hr rainfall, P^ 	 in
5. Land slope, s 	 ft/ft
.0.8
hr
7.	Surface description (paved or unpaved) 	
8.	Flow length, 1. 		ft
9.	Uatercourse slope, s 			ft/ft
10. Average velocity, V (figure 3-1) 		ft/s
T
Compute T 		hr
		ft
		ft
14.	Hydraulic radius, r ¦— Compute r 		ft
Pw
15.	Channel slope, s 		ft/ft
16.	Manning's roughness coeff., n 	
2/3 1/2
17.	V - 1'*9 rn			 Compute V		ft/s
		ft
Compute T 		hr
segments.



tyeuA*
rnivn



30 o.
3>oo
3 >o

bo 5
#•05
Hi







lOo
2~!<3 0


3'6
3-4.
0'D5
f 0-2,1.


/
/
/
/
/
/
/
/
/
/
/
/
/
/
/

1 ]

I, and 19'

DUb



/

/
"X-
(210-VI-TR-55, Second Ed., June 1986)
-------
'0
\\ i	Project -p- 'M P
Worksheet 3: Time of concentration (lc; or uuvcj time
'pu \. ^
Location 10 *~c , (oo *¦¦
hi.
By
Checked
Date
Date
fipr>l 9-
Circle one: Present De^jSped
Circle one: /t
T through 6ubarea
t	6
NOTES: Space for as many as two segments per flow type .can be used for each
worksheet.
Include a map, schematic, or description of flow segments
Sheet flow (Applicable to Tc only)	Segment ID
1.	Surface description (table 3-1) 		.....
2.	Manning's roughness coeff., n (table 3-1) ..
3.	Flow length, I. (total L <_ 300 ft)
4.	Two-yT 24-hr rainfall, 	
5.	Land slope, s
0.007 (nL)
„ 0.5 0.A
2 8
0.8
Compute T
ft
in
ft/ft
hr


\oo
3 
p ,'j
i i^i-, L+ $7 S-i! i0#o^-ste
I IXhannci: f low if~y luOt/7' j -	t	Segment ID
12.	Cro66 sectional flow are
13.	Wetted perimeter, p^
14.	Hydraulic radius, r ¦
15.	Channel slope, 8 ....

Compute r
ft
ft
ft/ft
16. Manning's roughness coeff., n
17. V -
. 2/3 1/2
1.49 r s
18. Flow length, L
L
Compute V 	 ft/s
	 ft
19. T
3600 V
Compute T
hr
OjDO
N5
.
Phi DO
i oil-
20. Watershed or subarea Tc or (add T in steps 6, 11, and 19]
/1p C jl« f/o C-cv> ^ u	/
hr
m

fw I° at-
(210-VI-TR-55, Second Ed., June 1986)	r j_
'fc	^ 1' -t-nVA^e U>u^^r lOO ft17 J
-Q{ I Od C'L	i/)f:h/L	tfbl/lt ft/lr--/
2Do -j-
-------
Worksheet 4: Graphical Peak Discharge method
Project
LocatIon
dzVUn
1w
L
By 1 '	Date A?^l I 2
Checked	Date
Circle one-j^Present Developed
(O^c. I°0io	y -^'oo
7	(I.^IA) II, III)

percent of A^ (_
acres or mi covered)
to
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		In
4.	Initial abstraction, I 		In
' a
(Use CN with table 4-1.)
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	 csm/ln
(L'se T and I /P uith exhibit 4-"J-/V)-
c	a		LJ-
7.	Runoff, Q 		in
(Frorn worksheet 2).
8.	Pond and swamp adjustment factor, F^ ....
(Use percent pond and swamp area
with table 4-2. Factor Is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
(Where q = q A QF )
np u m p
Storm—<4-
0-
3'Q
pyC^lA^r /0D
jturrn
iHt

,33
0 -^b

t%'Z-
& 0
ft O 7
9.^3
D-tydbyi IO
Stuirn
=£3
->

0^^
0.6 7
I £.2Z3[
in
p-s-

l.o
—p—
h?>
o01 ^ | /¦?3
3.73

.V
rt-1
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Project
^ C ^
Location	Aity)
Circle onez^'Present Developed
(Qau, ldO+<- '°a'<- (°°^
	 By "/"< l-\
	 Checked
Date Apr', ( ^ 2
Date
1. Data:
Drainage area .......... A = OQ[S(> ml^ (acres/640), ^too ~ f S t> ^'
^lOar		J	„
Runoff curve number .... CN »	'2— - (From worksheet 2) CaJP ~ O /L-	
Time of concentration .. T »= f),<4-h /r ^O.bl hr (From worksheet 3) r _ /],77 7- - ^ r o
el^ /,£> ^	s '5,0"	/ V°	-
v .	 _ '	 (1,/IA) II, III)
Rainfall distribution type
Pond and swamp areas spread
throughout watershed 	
4-

percent of A^ (
acres or mi covered)

2.	Frequency 		yr
3.	Rainfall, P (2-i-hour) 		in
e*. Initial abstraction, I 		in
a
(Use CN with table 4-1.)
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	 csm/in
(Use Tc ^nd I /P with exhibit 4 - ^p\ )
1. Runoff, Q 		in
(Frorc uorksheec 2).
8.	Pond and swamp adjustment factor. F ....
P
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swarap area.)
9.	Peak discharge, q^ 	 cfs
(Vfhere ci = q A OF )
p u m p
>torm
34-
1
3'0
pyc^pd ZOO
JjLUL W
IPtr
fXeydbyy i O
Stuiiu 03
i^vc/cp Jbo
->

O'll % Q.71* W?1


it?
o-ic?
7 ? ¦ 1 7f
/3 5
US
H-i
O.i
/.
I, d
/¦ o

o,°fi 9.23
Z$-\7-
-4
(210-VI-TR-55, Second Ed., June 1986)
-------
L
Worksheet 4: Graphical Peak Discharge method
Project	/M P f 0	 By	Dace
Location /Wfr-	j		Checked	Date 		
Circle one :^Present Developed
(O^ I0O ml^ (acres/640), Atoo	! S & w >
		J
Runoff curve number .... CN « b O (From worksheet 2) (Za)P ~ 0
Time of concentration .. T ¦=	rT. c/f"^Zhr (From worksheet 3) -p- ^ /],') 7	7" - /} r
eip —7%— ^	^i0_ s ty°° CJ'
^		 (i,/fr) II, III)
Rainfall distribution type ~
Pond and swamp areas spread
throughout watershed 	
4-
percent of A (
m
acres or mi covered)

2.	Frequency 		yr
3.	Rainfall, P (2-i-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CN vltli table 4-1.)
5.	Compute I /P 	
6.	Unit peak discharge, q 	 csm/in
(Use T and I /P uith exhibit )'
c	3	-*¦	
7.	Runof f, Q 		in
(Frora worksheet 2).
8.	Pond and swamp adjustment factor, F^ ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
(VJhere q = q A QF )
^p u m p
to
Geoi'rn—«4-
a
3'Q
fyc^ciA^ lot) fUvdby?/O Afrc/op J•
Sturm
StULlU
w
->

33
.33 o-i-i
o-
-------
Worksheet 4: Graphical Peak Discharge meintxi
Projec
Loca
t	[
Ctoa ^C- /yj 	
Circle one^^Present Developed
(O D ^
/

Drainage area 	 A
&

By */"' /-f
Checked
£7y--7	
Date Apri I ^ 2
Date
O 0\S& mi2 (acres/640), Aoo -	5 6 ^'
=*IGcj: '	n,,-/
Runoff curve number .... CN « *7(From worksheet 2) CaJP ~	. &u
Time of concentration .. T = O'^Mo/r. r (From worksheet 3) — _	2 Z 7~ - n,<~?
€ip 7^	^	%	k,0 	 y '3ioo u ^ ^
Rainfall distribution type - 	 (I,/IA) II, III)
Pond and swamp areas spread
throughout watershed 	

percent of A (
m -
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Inicial abstraction, I 	,	in
a
(Use CN with table 4-1.)
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	 cstn/ln
(Use T -ind I /P with exhibit 4-
c	a		
7.	Runoff, Q 		j.n
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 	 cfs
('-There ci = q A QF )
P u m p
'O
PyCfClAjr 100
¦ in Tfi
Qxvdvy? lO
$€im
0-273
o.in .

D-Zfo
D.
007
1
I
1
nk
/5 3
/ 30.

D'k

M
M

/. O -


*>



^x
- i°
«f.z- 4-,e
7$% > <7 ¦
>-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 4: Graphical Peak Discharge method
Projec
Loca
t Ion	A-) ' ^
By't' t-\
Checked
Dace j\?rl ( 2
Dace
Circle oner^Present Developed
(Otj_	(Oo*C\
i^eAsy,

1. Data:
Drainage area 			 A_ =* O-Q\5b mi^ (acres/640), Aoo	^ ^ ^ ***1
^IOcSZ				'
Runoff curve number .... CN - fo Q	 (From worksheet 2) CaJJ? ~ 7 0
Rainfall distribution type
Pond and swamp areas spread
throughout watershed 	 -
Time of concentration .. T = 0¦'U /f =d-(>Zhr (From worksheet 3) -p _ £ , |	f ^ O
eiP TS>	^	>5,0 	y Iii°° 	—
4-
n,(^) ii, in)
percent of A (
m -
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, I 		in
a
(Use CN with table 4-1.)
5.	Compute I /P 	
a
6.	Unit peak discharge, q 	~z .. . 	 		 csm/in
(L'se T and I /P uith exhibit 4-^/f)
c	a		-
7.	Runoff, Q 		in
(From worksheet 2).
8.	Pond and swamp adjustment factor, F ....
(Use percent pond and swamp area
with table 4-2. Factor is 1.0 for
zero percent pond and swamp area.)
9.	Peak discharge, q^ 		cfs
('»fhere q 3 q A QF )
^p u m p

(\g?ck£ loo
(Xcvdby? 10
9 71*
ficfc/op J(
Covin v 1
¦j L u L ui '/
O C U L Ui V J
1
¦cr~


^ il




D'O —


.
1


6-ZZZ-
0-'2^,
1

5
• o- o7H-
0.07+ ,
si.
o.| O.I 1
*5 X
So
[(ol
tw-
'
J
i


0--0
-z.o
i
1
I
/ D



h U





i

D-b..
Z-C
6.\
H.2 '
D-4
(210-VI-TR-55, Second Ed., June 1986)
-------
Project
.ocatloa
Worksheet 4: Graphical Peak Discharge method
1w	Date
Checked	Date
Circle one ^Present Developed~^\ -XK^/)£/fl/\&\A/7 ¦
/&><*_	'°^i (OD^<\	~
Drainage area 	 A
O 0\S(* mi2 (acres/640), Aioo ~ I S 6 w
'lO^z				>
Runoff curve number .... CN -	( 3- (From worksheet 2) CwJj> ~ 7 ;
>o- U
Time of concentration .. T
to
RainfaLl distribution type
Pond and swamp areas spread
throughout watershed ...... -
,00
ft.
O-^Thr (From worksheet 3) -r- = qI
b,0 	1	/ !i>i°0
__ (I/IA) II, III)
0-7.
4-
percent of A^ (_
acres or mi covered)
2.	Frequency 		yr
3.	Rainfall, P (24-hour) 		in
4.	Initial abstraction, 1 		in
a
(Use CN with table 4-1.)
5.	Compute I /P 	
r	a
6.	Unit peak discharge, q 	 csm/in
(l'se Tc <0 -




0-118
0*11%.
otS I
O! SI

o 2G
O. 2 G
0.0<>
o-bS.
!
"7*
7 V-
( (jO-
/f f-


o-£
£ 2
P- -2_

1 D


>
1. U







2 / ' ° r
y*t.p-
5, (o
"jo.f
U-4
(210-VI-TR-55, Second Ed., June 1986)
-------
o
N V*
W OrKiiliett Oii. A/cvt.iL.v/..			0
peak outflow discharge (%) known
Project
2SL
By
-X
oo
cd
u
o
c
o
velope
(Q^i_ / (GO cxr
n
cur
i -H-1
rt
-LLi-L
J-L
I i I i—I. L4-
-fl-J-rL
-T-ti -'
...
HIT
:h
1+
7LT.
-t-M-
tliitr
quLn
M-
r j i i.
o2T
L.
liS
-t: rL
' '-i '
-H-f
tt
Tt"
xtr
itithr
i-*
—(—i—>--f —i—
• 1"rT"
~t-«-; j i f
Xf_jj :»-r+
— J H-y+-p4
iit:±t±!t
1 ' I.
II
Hi
.1 ! I
¦i l.
TT
TW
444-
TT
4-4-
¦4-1-
t—r+
-"1—
-M-
+—r-
"T-T
-l_L
4+
x_i_
H4-
-rr
++-
r-hH
4-^-4-
r-H-
Detentlon basin storage
. _ „ .	(VDctc
1. Data:
Drainage	area JllQl-.. ^
Rainfall	distribution
type (I,	LA, II, III) *
o.iSt,
0-015L
2£
/•W/
ml2
2. Frequency ...... yr
3. Peak Inflow dis-
charge, q^ -••• cfs
(Froci worksheet 4 or
k. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
ql
2nd stage q Includes 1st stage q£
(0ac II lOOac
1
sfa^e
ity/
agitgg


Sr 1 frl
5b)
I 2 i>
m mi
if
6. —
(Use — with figure
7. Runoff, Q	 In
(From worksheet 2)
8. Runoff volume,
.......... a
(Vr - 0^53.33)
9. Storage volume,
ac-f t
(V - v (—))
v s r V
10. Maximum stage, E
(From plot)
max
D^l -
0-tf.
6-1)

. 0
l-o ¦


0



o-bb
3 -lA-






(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 6a: Detention basin storage,
peak outflow discharge (q^ known
Project

By

Location
Checked
Circle one: Present
veloped~
(0^ / (Crpc^c.
Date
Date
ApkL.1
4)
00
«
c
o
(0
>
w
Tin
T-

±r
L--M- -+.
-M-
4—L
±ztrii:i

iT+r;
_i.
-t-1-
-i Y


-h-Ht
•f-r
-hH-t
T T"|
1*1
TCI
r-t 1-t
i_Ui_

!-f
TT
--H-
tr
±r
:tt
— U-
' 1
TTU
-14
-(—f-r
m'-u-i
TfjjH
t * i-1"'
+T1T

-U-
-1—}—t-
-l—L-
+4-
Tt"
: i i
-U-
rn
Wf
i I : i
-!	f-
H	i
++¦
: '
-t-f-
-rr-r
: i ;
-t—r-
-M-
i i I M
-r-r
I , 1 I
-TT
I I i I
fH-
T+
i i ! i :

-H-1
1 j ; ! i ! ' 1
M M
XI
; : i
-h-
Detention basin storage
1. Data:
(00&- c
£)./ 5 & **
L.
Drainage area ..i0.^7 - D-015^mi^
Rainfall distribution
type (I, IA, II, III)
TT
2.	Frequency	yr
3.	Peak inflow dis-
charge, •••• cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute
lOo^
1 (OOac
1st
sta^e
I 2nd
stage

1


2^ 1
5b)
_1'
ho 17^ •



D'bl


6. —
(Use — with figure
qi
7. Runoff, Q ««*•«« in
(From worksheet 2)
8. Runoff volume,
(vr - 0^53.33)
9. Storage volume.
ac-f t
(V - v (—))
s r V
r
10. Maximum stage, E,
(From plot)
max
ou
0 If
6-1)

/¦ 4
t>±


(U
1 II *5-


O^o
2. fro






—^ 2nd stage qQ includes 1st stage qQ.
(210-V1-TR-55, Second Ed., June 1986)
-------
Project
MP
Location
W OI KSI ICCL uu. 			
peak outflow discharge (q^ known
By j~'
Checked
Date /^|9n {
Date
Circle one: Presen

velope
iDo-t-j (00
¦p.
, i ¦ .


i • . .
. : . ! r "i
i-


-4-i4--
i ¦
+•¦ i': ¦ .

: 1 . : ; , 1


	 T
t-H
i ;
4r-


M1+
ph
—M--
-H-

—
— t

i
-H-
j4-
hi.

: ; • 1

		

rz.
-t-T"


j : I !
¦
tr




r

-rirK

j;.':!!-

	

J-LL4_L
—1—
_ .
:±R
t-l-
-f]
J—
I
-H-
r—f-




r
-Li
i
:i±9=

~rT^~
- ! 1 -
: i ;
i i j—

!
« . - .

1 ,
J-14.
1"
T"

-t-ij

I






-4
- —r
-±m:
-r

it..
1 r i

i

1
I
1 l
' ¦

i
-rr
"T1
| « ; \ .
f *-r-H
H-
- 7——


"T" *
H—

. —t.
, . ! ! '
1 Til " I ,


._ i
—




xrrrr
¦j-f-
i

i+f1
1
T
4-
H-
41





-=£±t4

¦ T 1

-; j


.


1 j 1 4_J.
-rr
LLJ

. i.
I-t-h





44^-

—u
—
i-
	r-p
-



4-u-nn i
7: iTi l7-.
¦ 4-H-

1

—h
¦thrt

n-
n-

'



t-t
1 i
-L-i L.
-rH-

_^L L-
	|-r
< 1 1

i
« i

i
..i
JZft
i
—r
-t-
-t-J !-:
-H-+-


4
T|-
.4
.2.1:

31 e
- f t j-1-
~ i-r-
pF
. -
i ! 1 4
VLf-tU
-£iia
-ii4- -
-J-r-r"


~+t

i
-f


t
—r~
-+—r-	
!—f-f


-H+
¦V-


11' i 1

• I
-f -
! 1 ' :
P
i_..
-H
jZ
-i—-
i ¦!1


—t-



1

•-

~ r —
j-|+-
"j"
—r~~"
—~ —
! ' 1 : i 1 .
I ' " :
-4-

i


1
Detention basin storage
(vPa-c
1. Data:	,^
Drainage	area Jy.&l-..
Rainfall	distribution
type (1,	IA, II, III)
o*iSl>
nil
IP.&L. K. - 0-0*5L*l2
£
2. Frequency
y*
3- Peak Inflow dis-
charge, qt •••• c*8
A. Peak outflow dis-
charge, q
5. Compute —
qi
cf 8
(Oat \OOd(

I
7ur


?. ~7T~
(Use
with figure
7• Runoff, Q «••••• in
(From worksheet 2)
8. Runoff volume,
ac-f t
(vr - 0^53.33)
9. Storage volume,
ac-f t

r
10. Maximum stage, E(
(From plot)
max


6-1)

1' 3



i. oy
(O.fZ


o-<; 3,







(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 6a: Detention basin storage,
peak outflow discharge (%) known
Project

By

Location 'foOt
Checked
Circle one: Present
veloped"

Date
Date
AgzLl
01
go
<0
c
o
>
0)
Tlx

-t
¦T+
- L

-Ul
4-1-
•~*T+ r:
r±ii
w*
4-t
i-|
X
_l_L
—U-
+T
.h44
r-T
iiui
TCI
i : i ;
!¦* i-frj-
n
++f:
±ttfi
	
-14
i i i—iii
¦4—1-4-
i I ;
r-}-
1;!: •
Mil
HZ
i I I I
; I
Tt
I I I
+-H-
J-H-
-r-r-r

¦ <
"h"
f
-r< - .	| ¦
¦i; ii h-4i-
I I I ! -i-i-
:h
1- • »-•- ¦
-i- -I . 4
tTJ'-UJ
rs
ittj.
f-f-
Eit
H-
-H4-
4—.

-M-
-rl-H-
-4-1-
-t-r-
+^
-H-1-
1. Data:
fOO^c -£>.'5 6>U<
Drainage area ..lQ.%7 " D-Q! 5j,m1^
Rainfall distribution
type (I, 1A, II, III)
Detention basin storage
V
2_
TT
2. Frequency
yr
3. Peak Inflow dis-
charge, •••• cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
qi
10 o<-
] [00
-------
womsneei ucicnuun uuon.
peak outflow discharge (%) known
Project

Location
Pfi/U o^o
By -T'fA
Checked
Date /4]9
Date
n
Circle one: Presen
o
CO
CQ
u
o
c
o
<8
>
o
(O^c. / (00 cxr
Detention basin storage
1. Data:
Drainage area	^ ~
Rainfall distribution
iwDo-t
JV.Q-L.
type (I, 1A, II, III)
o-tSb
O-OiH
mi
mi2
6. T,—
2. Frequency
yr
3. Peak inflow dis-
charge, q^ •••• cfs
4. Peak outflow dis-
charge, qQ .... cfs
5. Compute —
1/ 2nd stage q includes 1st stage qQ.
10 ac inoac
lk^ 2^d/
ll
7ur |


£¦1 i
:
5b)

b."b !


0-0 b
o oQ
O' 1
li
O ' \
(Use — with figure
qi
7• Runoff, Q •*•«.. in
(From worksheet 2)
8.	Runoff volume,
Vr 	 ac-ft
(Vr - 0^53.33)
9.	Storage volume,
V 	 ac-ft
Z






(210-VI-TR-55, Second Ed., June 1986)
-------
Worksheet 6a: Detention basin storage,
peak outflow discharge (%) known
Project

By

Location	\flO/b)
Checked
Circle one: Present
veloped

Date
Date
I
o
00
CQ
U
©
p
o
c
o
<9
>
4>
ti-
. 1 .


i! i ¦ i;;



b-H-L
1 !
-« 1 1 , ' r
, ! 1 . : , i

.¦f"
:



1 |
Pi-
—H--


—
r *

J
|

. ¦ ¦ ¦ 1 ¦ . •
	


j |



I

, |





1
1 i ! : ¦
'1 ' 1 :
•




• ! 1







1

rrf^-
ii.-i ¦ !l
1

±rttt:

_ ..


-i-M
--f-
._L
i
-H-
-j-t-





~r
-M
i
1-1 J—L.
-44--

¦ i ,
~i~H—

•

t |



i_i_
• -r
"I
-






4-1
-T|f
i-l- »
i ! 1 1
1 1 : 1



	Ul_

1
"T|
H-r
i » «
- i ¦ i.
4-



r





i :


-tHt-
	rT—f-"—

4-
1
:CUh4=
4-
-H-






i 1111 i
' • ;
k-h-
4-
- -

_X-L
1 ,
1.1
1
ilfer
1
-t-
¦
4T

1




: ri 1
-W-L
Li-4-u
—r •


in^xr:
—h

¦T,

-1-
i
—r
-

4~

1 ' 1 ! 1
;; i i
4-

4-

i

j.j.
; i
4-
1 -i
l -I
i ; i.
1. i-
-f-; r
T~
I ; i-

_att
	
¦ ; i '

-l-
. —
-4

i^±LZt

; ;
'1!:

	



	1	L
. 1



l
1
l

-ill:!

I'M 1 :


TT-
4~
i ¦
h-

"I 1
i;
-4- -
-t
~ *
t- •
Erh
r1-:
_i., .
1 - i—t-
T-i-U-
xilf
-H--i-j-r
? i » T
.
—f—

±tt= =
-h
¦ ; i! : ! ,
H—H	
—p -i.
UH4-

-r 7"H"
i | .


-4-
L^-4-

¦ i ' i : 1 ! ¦
—t—	¦—
, '
ti ¦ 'T--
"'rfn-
+, \ r-J-
h-H-
	j-r
J-r--; •:

1 . : .—;—
rt : ¦ 		
t



4-
L

•
... _j
-i-l


. • , : i


1 : 1 . :

1. Data
(CO^c -0.'56«*.
Drainage area .. IQ.Z? ' 0-QlS(,mi2
Rainfall distribution
type (I, IA, II, III)
Detention basin storage
V
Z_
IT
2. Frequency
yr
3. Peak inflow dis-
charge, q^ .... cfs
Peak outflow dis-
charge, qo .... cfs
Compute —
(Qoe
(OOac
1st
stage
2nd
stage


o^r I^r

^ I
5b)
2
ID \1-U


oik



•A/ 2nd stage qQ includes 1st stage qQ.
6.
(Use — with figure
7• Runoff, Q ...... In
(Prom worksheet 2)
8. Runoff volume,
.......... a
(Vr - 0^53.33)
9. Storage volume.
ac-f t
(V - V (—))
e r V
r
10. Haxlmua stage, Et
(From plot)
max

0-^
6-1)


?-2-



ifr-3


Q-
7.31.






(210-V1-TR-55, Second Ed., June 1986)
-------
number of storms =	1
interval = 144. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
2 .86
2 .86
.00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
2 . 86
2 . 86
2.86
.00
.00
. 00
12. hrs, precip =
.59 inches
variable = tss
load
lbs
1356.59
271.24
1085.35
1356
271
271
1085
59
24
24
35
00
00
cone
ppm
174.5150
34.8898
.0000
174.5150
34.8898
34.8898
load removal efficiency = 80.01 %,
continuity errors: volume = -.01 %,
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 1.93
device
1 dry pond
case title
case data file
adjusted =
load	=
maximum
inflow
cfs
13 .91
= Coastal Zone Study(NE)
= nemlOOd.inp
storm data file = czmnest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
80. 01
. 00
maximum
outflow
cfs
1.75
maximum
velocity
ft/sec
.00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
100 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
60.000
. 000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
-
.000
bottom area
acres
-
1.034
permanent pool area
acres
=
.000
permanent pool volume
ac-ft
=
.000
perm, pool infiltration rate
in/hr
--
.000000
flood pool area
acres
—
1.378
flood pool volume
ac-ft

4.824
flood pool infiltration rate
in/hr

.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
-
. 600
outlet weir length
feet

.000
weir discharge coefficient

-
3 .300
perforated riser height
feet
—
.000
number of holes in riser

-
. 000
hole diameter
inches

. 000
particle removal scale factor

1.000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 100.00 60.00 60.0	1.03 .00 .00 1.38 4.82 3.5
24 OVERALL 100.00 60.00 60.0	1.03 .00 .00 1.38 4.82 3.53
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.72	.00 1.03	.00
25 OVERALL	1.72	.00 1.03	.00
total-storage
ab/at vb/at
% inches
1.38	.58
1.38	.58
flood-storage
vb/at
inches
. 58
. 58
-------
number of storms =
interval = 144. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
1.43
.92
.92
.00
.51
.00
1.43
.51
.92
1.43
. 00
. 00
. 00
12. hrs, precip =
variable = tss
load
lbs
678.29
59 .37
. 00
59 . 37
135.43
483.50
.59 inches
678.29
135.43
.00
135.43
542.86
. 00
. 00
174
23
97
cone
PPm
5150
8154
0000
0000
1535
0000
174.5150
97.1535
.0000
34.8442
load removal efficiency = 80.03 %, adjusted = 80.03
continuity errors: volume = .00 %, load	= .00
extreme values
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.02 3.00	6.96
= Coastal Zone Study(NE)
= nem50i.inp
= czmnest.stm
= czm_nurp.par
= prov6988.tmp
maximum	maximum	wet
outflow	velocity	period
cfs	ft/sec	%
3.73	.00	55.6
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
50 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 600
. 020
-------
scs curve number (pervious
sweeping frequency
water quality load factor
portion)"	= 60.000
times/week =	.000
1.000
device = 1 infilt b, type = 2 infiltr
bottom elevation	feet
bottom area	acres
storage pool area	acres
storage pool volume	ac-ft
infiltration rate	in/hr
void volume %
particle removal scale factor
. 000
.226
.301
.791
.500000
100.000
1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 30.00 60.0	.30	.79 2.63
24 OVERALL	50.00 30.00 60.0	.30	.79 2.63
total-storage	zroea'
acres ac-ft	fee
.30 .79	2.6
.30 .79	2.61
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.00	.32	.60	.19
25 OVERALL	1.00	.32	.60	.19
total-storage
ab/at vb/at
% inches
.60	.19
.60	.19
flood-storage
vb/at
inches
. 00
. oo
-------
number of storms =	1
interval = 144. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
3 .81
3 .81
. 00
mass-balance term .
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
81
81
.81
,00
. 00
, 00
12. hrs, precip =
.59 inches
variable = tss
load
lbs
1808.79
361.99
1446.80
1808 .
361,
361
1446,
79
99
99
80
00
00
cone
PPm
174 .5150
34.9215
.0000
174.5150
34.9215
34.9215
79.99 %, adjusted = 79.99
-.01 %, load	= .00
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev	elev inflow outflow velocity period
ft ft	ft cfs cfs ft/sec %
.00 .00	1.94 18.55 2.34 .00 40.3
= Coastal Zone Study(NE)
= neclOOd.inp
device
1 dry pond
case title
case data file
storm data file = czmnest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.800
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
¦ -
1.375
permanent pool area
acres
—
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
:
.000000
flood pool area
acres
-
1.834
flood pool volume
ac-ft

6. 418
flood pool infiltration rate
in/hr
--
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

—
3 .300
perforated riser height
feet

. 000
number of holes in riser

-
. 000
hole diameter
inches
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage zmean
device acres acres % acres ac-ft feet	acres ac-ft fee
1 dry pond 100.00 80.00 80.0 1.38 ' .00 .00	1.83 6.42 3.5
24 OVERALL 100.00 80.00 80.0 1.38 .00 .00	1.83 6.42 3.50
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device % inches %	inches
1 dry pond 1.72 .00 1.38	.00
25 OVERALL 1.72 .00 1.38	.00
total-storage
ab/at vb/at
% inches
1.83	.77
1.83	.77
flood-storage
vb/at
inches
.77
.77
-------
number of storms =
interval = 144. hrs,
device == 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedirnen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
storm duration =
type = infiltr ,
flow
acre-ft
1.91
1.22
1.22
. 00
.69
.00
1.91
.69
1.22
1.91
.00
.00
. 00
12. hrs, precip =
variable = tss
load
lbs
904.39
78 .92
. 00
78 . 92
181.47
644.00
.59 inches
174
23
97
79 .93
. 00
904.39
181.47
.00
181.47
722.92
. 00
. 00
adjusted = 79.93
load	= .00
cone
PPm
, 5150
, 8002
,0000
. 0000
.2262
, 0000
174.5150
97 . 2262
.0000
35.0168
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.02 3.00	9.28
= Coastal Zone Study(NE)
= nec50i.inp
= czmnest.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
5. 00
maximum
velocity
ft/sec
.00
wet
period
%
55.6
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
50 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	= 1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet	=	.000
bottom area acres	=	.301
storage pool area acres	=	.401
storage pool volume ac-ft	=	1.053
infiltration rate in/hr	=	.500000
void volume %	=	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 40.00 80.0	.40 1.05 2.62
24 OVERALL	50.00 40.00 80.0	.40 1.05 2.62
total-storage	zmear
acres ac-ft	fe>
.40 1.05	2.1
.40 1.05	2.o^
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at	vb/at
% inches %	inches
1.00 .32 .80	.25
1.00 .32 .80	.25
device
1 infilt b
2 5 OVERALL
total-storage
ab/at vb/at
% inches
.80	.25
.80	.25
flood-storage
vb/at
inches
. 00
. 00
-------
APPENDIX B
P-8 MODELING RESULTS
80040000H .\WP\CM ATR55. N EW
13
May 4, 1992
-------
NORTHEAST AND GREAT LAKES REGION RESULTS
-------
storms =
. 144. hrs,
1 dry pond,
r,uass-ba lance term
01 watershed inflows
06 normal outlet
08	sediitien + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 19
. 19
.00
. 19
. 19
. 19
.00
. 00
.00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
90.03	174.3422
17.95	34.7494
72.09	.0000
. 59 inches
90. 03
17 .95
17.95
72 . 09
.00
.00
174.3422
34.7494
34.7494
load removal efficiency = 80.07
continuity errors: volume = -.01
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 1.91
= Coastal Zone Study(NE)
= nesflOdi.inp
device
1 dry pond
case title
case data file
adjusted =
load	--
maximum
inflow
cf s
.83
storm data file = czmnest.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
80. 07
. 00
maximum
outflow
cf s
. 12
maximum
velocity
ft/sec
. 00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, single family
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.400
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	72.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 069
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
-
.092
flood pool volume
ac-ft
=
.322
flood pool infiltration rate
in/hr
:
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
.600
outlet weir length
feet
=
.000
weir discharge coefficient

=
3.300
perforated riser height
feet
—
. 000
number of holes in riser

—
.000
hole diameter
inches

.000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean	total-storage zmea^
device	acres acres	% acres ac-ft feet	acres ac-ft fee
1 dry pond 10.00	4.00 40.0	.07	.00 .00	.09	.32 3.5
24 OVERALL	10.00	4.00 40.0	.07	.00 .00	.09	.32 3.50
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.73	.00	.69	.00
25 OVERALL	1.73	.00	.69	.00
total-storage
ab/at vb/at
% inches
.92	.39
.92	.39
flood-storage
vb/at
inches
.39
. 39
-------
number of storms =	1
interval = 144. hrs,	storm duration =
device = 1 dry pond,	type = pond ,
flow
mass-balance term	acre-ft
01 watershed inflows	.29
06 normaL outlet	.29
08	sedimen + decay	.00
09	total inflow	.29
10	surface outflow	.29
12	total outflow	.29
13	total trapped	.00
14	storage increase	.00
15	mass iDalance check	.00
load removal efficiency = 80.02 %,
continuity errors: volume = -.01 %,
extreme values over all storms
12. hrs, precip
variable = tss
load
lbs
135.05
26.98
108.07
.59 inches
cone
ppm
174.3422
34.8252
. 0000
135.05
26.98
26.98
108.07
. 00
. 00
174.3422
34.8252
34.8252
adjusted
load
device
1 dry pond
case title
case datci file
storm data file
particle file
air temp file
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.92	1.25
= Coastal Zone Study(NE)
nemflOdi.inp
czmnest.stm
czmnurp.par
prov6988.tmp
80. 02
. 00
maximum
outflow
cfs
. 17
maximum
velocity
ft/sec
.00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, multi-family
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 600
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping freguency	times/week =
water guality load factor	-	=
-------
device - 1 dry pond,
type = 1 pond
bottom elevation feet =	.000
bottom area acres =	.103
permanent pool area acres =	.000
permanent pool volume ac-ft =	.000
perm, pool infiltration rate in/hr = .000000
flood pool area acres =	.137
flood pool volume ac-ft =	.480
flood pool infiltration rate in/hr = .000000
flood pool drain time hours =	48.000
outlet orifice diameter inches =	.000
orifice discharge coefficient =	.600
outlet weir length feet =	.000
weir discharge coefficient =	3.300
perforated riser height feet =	.000
number of holes in riser =	.000
hole diameter inches =	.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft	feet
1 dry pond 10.00 6.00 60.0	.10 .00	.00
24 OVERALL 10.00 6.00 60.0	.10 .00	.00
total-storage zme
acres ac-ft fe
.14	.48 3.
.14	.48 3.
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.72	.00 1.03	.00
25 OVERALL	1.72	.00 1.03	.00
total-storage
ab/at vb/at
% inches
1.37	.58
1.37	.58
flood-storage
vb/at
inches
. 58
. 58
-------
number of storms =
interval = 144. hrs,
device = l dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
storm duration =
type = pond ,
flow
acre-ft
. 38
. 38
. 00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
180.07	174.3422
35.84	34.6960
144.23	.0000
.59 inches
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
38
38
38
00
00
,00
180.07
35.84
35.84
144.23
. 00
. 00
174.3422
34.6960
34.6960
load removal efficiency = 80.10
continuity errors: volume = -.01
adjusted =
load	=
80.10
. 00
extreme values
device
1 dry pond
case title
case data file
storm delta file
particle file
air temp file
all storms
minimum maximum
elev
ft
1.91
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= necmlOdi.inp
czmnest.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cfs
1.66
Study(NE)
maximum
outflow
cfs
.23
maximum
velocity
ft/sec
.00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, commercial
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.800
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	7 2.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = l dry pond, type = 1 pond
bottom elevation
feet
=
.000
bottom area
acres

. 139
permanent pool area
acres

. 000
permanent pool volume
ac-ft
—
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres

. 185
flood pool volume
ac-ft
-
.646
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet

.000
weir discharge coefficient

-
3. 300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
f e
3.
3 . Dd
Coastal Zone Study(NE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean	total-storage
device acres acres %	acres ac-ft feet	acres ac-ft
1 dry pond 10.00 8.00 80.0	.14 .00 .00	.18 .65
24 OVERALL 10.00 8.00 80.0	.14 .00 .00	.18 .65
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at	vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches .
1 dry pond 1.73 .00 1.39	.00	1.85 .78	.78
25 OVERALL 1.73 .00 1.39	.00	1.85 .78	.78
-------
number of storms =	1
interval = 144. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
. 38
. 38
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
38
38
38
00
00
00
12. hrs, precip =
.59 inches
variable = tss
load
lbs
180.88
36.15
144.72
180.88
36.15
36. 15
144.72
. 00
.00
cone
PPm
174.5150
34.8783
. 0000
174.5150
34.8783
34.8783
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
base minimum maximum maximum maximum
elev elev elev inflow outflow
device	ft	ft	ft	cfs	cfs
1 dry pond	.00	.00 1.93	1.86	.23
case title	= Coastal Zone Study(NE)
case data file = necmlOd.inp
storm data file = czmnest.stm
particle file = czm_nurp.par
air temp file = prov69 88.tmp
maximum
velocity
ft/sec
. 00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, commercial
ED dry pond
watershed	- 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.800
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	60.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = l dry pond, type = 1 pond
bottom elevation feet	=	.000
bottom area acres	=	.13 8
permanent pool area acres	=	.000
permanent pool volume ac-ft	=	.000
perm, pool infiltration rate in/hr	=	.000000
flood pool area acres	=	.184
flood pool volume ac-ft	=	.644
flood pool infiltration rate in/hr	=	.000000
flood pool drain time hours	=	48.000
outlet orifice diameter inches	=	.000
orifice discharge coefficient	=	.600
outlet weir length feet	=	.000
weir discharge coefficient	=	3.300
perforated riser height feet	=	.000
number of holes in riser	=	.000
hole diameter inches	=	.000
particle removal scale factor	=	1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 dry pond
2 4 OVERALL
acres
10. 00
10.00
acres
8.00
8 . 00
80.0
80.0
acres
. 14
. 14
ac-ft
. 00
. 00
feet
. 00
. 00
total-storage	zmean
acres ac-ft fe<
.18	.64	3.!
.18	.64	3 . bu
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
% inches	% inches
1.72	.00 1.38	.00
1.72	.00 1.38	.00
device
1 dry pond
2 5 OVERALL
total-storage
ab/at vb/at
% inches
1.84	.77
1.84	.77
flood-storage
vb/at
inches
.77
.77
-------
number of storms =	1
interval = 144. hrs, storm duration =
device = 1 infilt b, type = infiltr ,
12. hrs, precip =
variable = tss
.59 inches

flow

load
cone
mass-balance term
acre-ft

lbs
ppm
01 watershed inflows
.29

135.66
174.5150
03 infiltrate
. 18

11.86
23.8110
04 exfiltrate
. 18

.00
. 0000
05 filtered
. 00

11.86
. 0000
07 spillway outlet
. 10

27 .16
97.1699
08 sedimen + decay
.00

96.65
. 0000
09 total inflow
.29

135.66
174.5150
10 surface outflow
. 10

27.16
97.1699
11 groundw outflow
. 18

. 00
. 0000
12 total outflow
.29

27.16
34.9330
13 total trapped
. 00

108.50

14 storage increase
. 00

. 00

15 mass balance check
. 00

. 00

load removal efficiency =
79.98 %,
adjusted = 79.98
%
continuity errors: volume =
.00 %,
load
. 00
%
extreme values over all storms




base minimum maximum maximum
maximum
maximum
elev elev
elev
inflow
outflow
velocity
device ft ft
ft
cf s
cf s
ft/sec
1 infilt b .00 .02
3 .00
1. 39
.75
. 00
case title = Coastal Zone
Study(NE)


case data file
nemflOi.inp
storm data file = czmnest.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
wet
55 . 6
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 600
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	= 1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.045
storage pool area acres =	.060
storage pool volume ac-ft =	.158
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 10.00	6.00 60.0	.06	.16 2.63
24 OVERALL	10.00	6.00 60.0	.06	.16 2.63
total-storage zmea ¦
acres ac-ft fe
.06	.16 2.
.06	.16 2.6:
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at - vb/at
% inches	% inches
1.00	.32	.60	.19
1.00	.32	.60	.19
device
1 infilt b
25 OVERALL
total-storage
ab/at vb/at
% inches
.60	.19
.60	.19
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 144. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
1.90
1. 90
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
1.90
1.
1.
90
90
00
00
00
12. hrs, precip =
.59 inches
variable = tss
load
lbs
900.34
179.20
721.14
900.34
179.20
179.20
721.14
. 00
. 00
cone
PPm
174.3422
34.6966
. 0000
174.3422
34.6966
34.6966
load removal efficiency = 80.10 %, adjusted = 80.10
continuity errors: volume = -.01 %, load	= .00
extreme values
all storms
minimum maximum
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= neslOOdi.inp
= czmnest.stm
= czm_nurp.par
= prov6988.tmp
elev
ft
1.91
maximum
inflow
cf s
8.31
Study(NE)
maximum
outflow
cf s
1.16
maximum
velocity
ft/sec
.00
wet
period
%
40. 3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
100 acres, single family
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.400
. 020
72.000
. 000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
—
. 000
bottom area
acres
=
. 692
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
--
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
-
.923
flood pool volume
ac-ft
-
3.232
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
-
.600
outlet weir length
feet

. 000
weir discharge coefficient


3 . 300
perforated riser height
feet
--
. 000
number of holes in riser

:
.000
hole diameter
inches
=
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
total-storage zmean
acres ac-ft fee
.92 3.23 3.E
.92 3. 23 3.5 u
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 dry pond 100.00 40.00 40.0	.69 .00 .00
24 OVERALL 100.00 40.00 40.0	.69 .00 .00
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.73 .00 .69 .00	.92 .39	.39
25 OVERALL 1.73 .00 .69 .00	.92 .39	.39
-------
number of storms =
interval = 144. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normcil outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
1.91
1.91
. 00
1.
1.
1.
91
91
91
00
00
00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
904.39	174.5150
180.77	34.8783
723.62	.0000
.59 inches
904.39
180.77
180.77
723.62
.00
.00
174.5150
34.8783
34.8783
load removal efficiency = 80.01 %, adjusted = 80.01 %
continuity errors: volume = -.01 %, load	= .00 %
extreme values over all storms
base minimum maximum maximum	maximum maximum wet
elev elev elev inflow	outflow velocity period
ft ft ft cfs	cfs ft/sec %
.00 .00 1.93 9.28	1.17 .00 40.3
= Coastal Zone Study(NE)
= neslOOd.inp
device
1 dry pond
case title
case data file
storm data file = czmnest.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.ooo
.400
.020
60.000
.000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = l dry pond,
type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 690
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration
rate in/hr
=
000000
flood pool area
acres
-
.920
flood pool volume
ac-ft
=
3 .219
flood pool infiltration
rate in/hr
:
000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
.000
weir discharge coefficient
=
3. 300
perforated riser height
feet
:
. 000
number of holes in riser
=
.000
hole diameter
inches
-
. 000
particle removal scale
factor

1. 000
exfiltrate routed to device 0
OUT

normal outlet routed to
device 0
OUT

spillway outlet routed
to device 0
OUT

device
zmean
feet
. 00
. 00
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each
total impervious	dead-storage
device	acres acres	% acres ac-ft
1 dry pond 100.00 40.00 40.0	.69	.00
24 OVERALL 100.00 40.00 40.0	.69	.00
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.72	.00	.69	.00
25 OVERALL	1.72	.00	.69	.00
total-storage
ab/at vb/at
% inches
.92	.39
.92	.39
total-storage zmean
acres ac-ft fee
.92 3.22 3.5
.92 3.22 3.50
flood-storage
vb/at
inches
. 39
. 39
-------
number of storms =	1
interval = 144. hrs, storm duration
device = 1 dry pond, type = pond
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
flow
acre-ft
2.85
2.85
. 00
2 .85
2.85
2 . 85
. 00
. 00
.00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
1350.51	174.3422
268.80	34.6966
1081.71	.0000
.59 inches
1350,
268 ,
268
1081
51
80
80
71
00
00
174 .3422
34.6966
34.6966
load removal efficiency = 80.10 %,
continuity errors: volume = -.01 %,
adjusted = 80.10 %
load	= .00 %
extreme
device
1 dry pond
case title
case data file
'/alues over all storms
base minimum maximum maximum maximum maximum	wet
elev elev elev inflow outflow velocity period
ft	ft	ft	cfs	cfs ft/sec	%
.00	.00 1.91	12.46	1.74	.00 40.3
= Coastal Zone Study(NE)
= nemlOOdi.inp
storm data file = czmnest.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	- 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
100 acres, multi-family
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
12.000
.000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
1. 039
permanent pool area
acres
-
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres
-
1.385
flood pool volume
ac-ft
=
4 .847
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches

.000
orifice discharge coefficient
---
. 600
outlet weir length
feet
-
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches
=
. 000
particle removal scale factor

1.000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 100.00 60.00 60.0	1.04 .00 .00 1.38 4.85 3.1
24 OVERALL 100.00 60.00 60.0	1.04 .00 .00 1.38 4.85 3 . 5j
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.73 .00 1.04 .00	1.38 .58	.58
25 OVERALL 1.73 .00 1.04 .00	1.38 .58	.58
-------
number of storms =	1
interval = 144. hrs, storm duration =
device ~ 1 dry pond, type = pond ,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
flow
acre-ft
3 .80
3.80
. 00
3 ,
3 ,
3
80
80
80
00
00
00
12. hrs, precip =
variable = tss
load
lbs
1800.68
359.39
1441.29
.59 inches
1800.68
359.39
359.39
1441.29
. 00
. 00
cone
ppm
174.3422
34.7924
. 0000
174.3422
34.7924
34.7924
load removal efficiency = 80.04
continuity errors: volume = -.01
extreme values over all storms
base minimum maximum
elev elev elev
device	ft	ft	ft
1 dry pond	.00	.00 1.9 2
case title	= Coastal Zone Study(NE)
case data file = neclOOdi.inp
storm data file = czmnest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
adjusted = 80.04
load	= .00
maximum
inflow
cf s
16. 62
maximum
outflow
cf s
2. 32
maximum
velocity
ft/sec
. 00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number ol: passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
100 acres, commercial
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.800
.020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation feet	=	.000
bottom area acres	=	1.37 5
permanent pool area acres	=	.000
permanent pool volume ac-ft	=	.000
perm, pool infiltration rate in/hr	=	.000000
flood pool area acres	=	1.834
flood pool volume ac-ft	=	6.418
flood pool infiltration rate in/hr	=	.000000
flood pool drain time hours	=	48.000
outlet orifice diameter inches	=	.000
orifice discharge coefficient	=	.600
outlet weir length feet	=	.000
weir discharge coefficient	=	3.300
perforated riser height feet	=	.000
number of holes in riser	=	.000
hole diameter inches	=	.000
particle removal scale factor	=	1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 dry pond
24 OVERALL
acres
100.00
100.00
acres
80 . 00
80.00
80 . 0
80 . 0
acres
1.38
1.38
ac-ft
. 00
. 00
feet
. 00
. 00
total-storage zmean
acres ac-ft fe«"
1.83	6.42 3.f
1.83 6.42 3.
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.72	.00 1.38	.00
25 OVERALL	1.72	.00 1.38	.00
total-storage
ab/at vb/at
% inches
1.83	.77
1.83	.77
flood-storage
vb/at
inches
.77
. 77
-------
number of storms =
interval = 144. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 19
. 19
. 00
.19
.19
. 19
.00
.00
.00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
90.44	174.5150
18.08	34.8783
72.36	.0000
.59 inches
90.44
18.08
18.08
72.36
.00
.00
174.5150
34.8783
34.8783
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.93	.93
= Coastal Zone Study(NE)
= nesflOd.inp
czmnest.stm
czm_nurp.par
prov6988.tmp
maximum
outflow
cfs
. 12
maximum
velocity
ft/sec
. 00
wet
period
%
40.3
precipitcition volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	o, keep =	o, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.400
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	60.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres

.069
permanent pool area
acres

. 000
permanent pool volume
ac-ft
-
. 000
perm, pool infiltration rate
in/hr
—
.000000
flood pool area
acres
=
.092
flood pool volume
ac-ft
=
. 322
flood pool infiltration rate
in/hr
—
.000000
flood pool drain time
hours
- -
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
.600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet

.000
number of holes in riser

-
. 000
hole diameter
inches
--
. 000
particle removal scale factor
-
1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 10.00 4.00 40.0	.07 .00 .00 .09	.32 3.5
24 OVERALL 10.00 4.00 40.0	.07 .00 .00 .09	.32 3.5^
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.73 .00 .69 .00	.92 .39	.39
25 OVERALL 1.73 .00 .69 .00	.92 .39	.39
-------
number of storms =
interval = 144. hrs,
device == 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	grourdw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
. 19
. 12
. 12
. 00
. 07
. 00
. 19
.07
. 12
. 19
.00
. 00
. 00
12. hrs, precip = .59 inches
variable = tss
load	cone
lbs	ppm
90.44	174.5150
7.92	23.8207
.00	.0000
7.92	.0000
18.06	97.1208
64.47	.0000
90.44
18. 06
.00
18.06
72.38
. 00
. 00
174.5150
97.1208
.0000
34.8451
load removal efficiency = 8 0.03 %,
continuity errors: volume = .00 %,
extreme values over all storms
base minimum maximum	maximum
elev elev elev	inflow
ft ft ft	cfs
.00 .02 3.00	.93
adjusted = 80.03 %
load	= .00 %
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 50
= Coastal Zone Study(NE)
= nesflOi.inp
= czmnest.stm
= czm_nurp.par
= prov6988.tmp
maximum
velocity
ft/sec
. 00
wet
period
%
55. 6
precipitation volume factor	= 1.000
storm duration factor	- 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, single family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1-000
device = 1 infilt b, type
= 2
infiltr
bottom elevation	feet	=	.000
bottom area	acres	=	.030
storage pool area	acres	=	.040
storage pool volume	ac-ft	=	.106
infiltration rate	in/hr	=	.500000
void volume %	=	100.000
particle removal scale factor	=	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 infilt b
24 OVERALL
acres
10.00
10. 00
acres
4.00
4. 00
40.0
40.0
acres
. 04
. 04
ac-ft
. 11
. 11
feet
2.63
2. 63
total-storage zmean
acres ac-ft feet-
.04	.11 2.i
.04	.11 2.6
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.01	.32	.40	.13
25 OVERALL	1.01	.32	.40	.13
total-storage
ab/at vb/at
% inches
.40	.13
.40	.13
flood-storage
vb/at
inches
. 00
.00
-------
number of storms = 1



interval = 144. hrs, storm
duration =
12. hrs, precip = .59
device = 1 dry pond, type =
pond ,
variable = tss


flow
load
cone
mass-balance term
acre-ft
lbs
PPm
01 watershed inflows
.29
135.66
174.5150
06 normal outlet
.29
27.12
34.8783
08 sedimen + decay
.00
108.54
.0000
09 total inflow
.29
135.66
174.5150
10 surface outflow
.29
27 . 12
34.8783
12 totaL outflow
.29
27 . 12
34.8783
13 total trapped
.00
108.54

14 storage increase
.00
.00

15 mass balance check
.00
.00

load removal efficiency =
80.01 %,
adjusted = 80.01
%
continuity errors: volume =
-.01 %,
load = .00
%
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
1.93
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= nemflOd.inp
czmnest.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cf s
1.39
Study(NE)
maximum
outflow
cf s
. 18
maximum
velocity
ft/sec
. 00
wet
period
%
40.3
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.600
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	60.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device - 1 dry pond, type = 1 pond
bottom elevation
feet
=
.000
bottom area
acres
=
.103
permanent pool area
acres
-
.000
permanent pool volume
ac-ft
=
.000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 138
flood pool volume
ac-ft
=
.483
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
r
.000
orifice discharge coefficient
=
.600
outlet weir length
feet

.000
weir discharge coefficient

7
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
. 000
hole diameter
inches
=
.000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 10.00 6.00 60.0	.10 .00 .00 .14	.48 3.1
24 OVERALL. 10.00 6.00 60.0	.10 .00 .00 .14	.48 3.50
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.72 .00 1.03 .00	1.38 .58	.58
25 OVERALL 1.72 .00 1.03 .00	1.38 .58	.58
-------
number of storms =	1
interval = 144. hrs,	storm duration =
device = 1 infilt b,	type = infiltr ,
flow
mass-balance term	acre-ft
01 watershed inflows	.38
03	infiltrate	.24
04	exfiltrate	.24
05	filtered	.00
07	spillway outlet	.14
08	sedimen + decay	.00
12. hrs, precip =
variable = tss
load
lbs
180.88
15.83
.00
15.83
36.12
128.93
.59 inches
cone
ppm
174.5150
23.8177
. 0000
. 0000
1396
0000
97
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
38
14
24
38
00
00
00
180.88
36.12
.00
36.12
144 .76
. 00
. 00
174.5150
97.1396
.0000
34 .8446
load removal efficiency = 80.03 %,
continuity errors: volume = .00 %,
adjusted =
load	=
80.03 %
.00 %
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.02 3.00	1.86
= Coastal Zone Study(NE)
= necmlOi.inp
= czmnest.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 99
maximum
velocity
ft/sec
. 00
wet
period
%
55. 6
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep -	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
10 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
.800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.060
storage pool area acres =	.080
storage pool volume ac-ft =	.211
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 10.00	8.00 80.0	.08	.21 2.63
24 OVERALL	10.00	8.00 80.0	.08	.21 2.63
total-storage zmean
acres ac-ft fe<
.08	.21 2. (
.08	.21 2.63
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
% inches	% inches
1.01	.32	.80	.25
1.01	.32	.80	.25
device
1 infilt b
2 5 OVERALL
total-storage
ab/at vb/at
% inches
.80	.25
.80	.25
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 14 4. hrs,
device := 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
.95
.61
.61
.00
.34
. 00
.95
.34
.61
.95
.00
.00
. 00
12. hrs,
variable =
load
lbs
452.20
39.57
.00
57
30
32
precip =
tss
174
23
59 inches
39 .
90.
322 .
452 .
90.
90.
361.
20
30
00
30
89
00
00
97
cone
ppm
,5150
.8153
.0000
. 0000
. 1535
. 0000
174.5150
97.1535
.0000
34.8504
load removal efficiency = 80.03 %, adjusted = 80.03
continuity errors: volume = . 00 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
device	ft	ft	ft	cfs
1 infilt b	.00	.02 3.00	4.64
case title	= Coastal Zone Study(NE)
case data file =.nes50i.inp
storm data file = czmnest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
maximum
outflow
cfs
2 .49
maximum
velocity
ft/sec
. 00
wet
period
%
55. 6
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northeast rainfall zone
50 acres, single-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency
water quality load factor
times/week =
. 000
1. 000
device = 1 infilt b, type = 2 infiltr
bottom elevation	feet	=	.000
bottom area	acres	=	.151
storage pool area	acres	=	.201
storage pool volume	ac-ft	=	.528
infiltration rate	in/hr	=	.500000
void volume %	=	100.000
particle removal scale factor	=	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 20.00 40.0	.20	.53 2.63
24 OVERALL	50.00 20.00 40.0	.20	.53 2.63
total-storage zmean
acres ac-ft fee*-
.20	.53 2.6
.20	.53 2.6_
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.00	.32	.40	.13
25 OVERALL	1.00	.32	.40	.13
total-storage
ab/at vb/at
% inches
.40	.13
.40	.13
flood-storage
vb/at
inches
. 00
. 00
-------
MID ATLANTIC, SOUTHEAST, AND GULF REGION RESULTS
-------
number of storms =
interval = 13 3. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 06
. 06
. 00
.06
. 06
. 06
. 00
.00
.00
8. hrs, precip =
variable = tss
load
lbs
24.35
4.87
19.48
78 inches
24.35
4.87
4 .87
19.48
. 00
. 00
cone
ppm
149.2787
29.8463
\.0000
149. 278<^
29.8463
29.8463
load removal efficiency = 80.00
continuity errors: volume = -.01
adjusted =
load	=
80. 00
. 00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.01 2.06	.29
= Coastal Zone Study(SE)
= segsld.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 04
maximum
velocity
ft/sec
. 00
wet
period
%
42 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	o, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
1 acre, fast food/ gas station
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
1. 000
.950
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
- 000
bottom area
acres
=
.021
permanent pool area
acres
--
.000
permanent pool volume
ac-ft
:
.000
perm, pool infiltration rate
in/hr
-
.000000
flood pool area
acres
=
.028
flood pool volume
ac-ft
-
. 100
flood pool infiltration rate
in/hr

.000000
flood pool drain time
hours
"
48.000
outlet orifice diameter
inches
-
.000
orifice discharge coefficient
-
.600
outlet weir length
feet
=
.000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
.000
hole diameter
inches
=
. 000
particle removal scale factor
=
1.000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 1.00 .95 95.0	.02 .00 .00 .03	.10 3.!
24 OVERALL 1.00 .95 95.0	.02 .00 .00 .03	.10 3.bu
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at	vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 2.25 .00 2.14	.00	2.85 1.20	1.20
25 OVERALL 2.25 .00 2.14	.00	2.85 1.20	1.20
-------
number of storms =
interval = 133. hrs,
device == 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
storm duration =
type = infiltr ,
flow
acre-ft
. 06
. 04
. 04
. 00
. 02
. 00
8. hrs, precip =
variable = tss
load	cone
lbs	ppm
24.35	149.2787
2.11	20.2894
.00	.0000
2.11	.0000
4.88	82.4263
17.36	.0000
.78 inches
09	total inflow
10	surface outflow
11	grouridw outflow
12	total outflow
13	total trapped
14	storaige increase
15	mass balance check
06
02
04
06
00
00
00
24 . 35
4.88
. 00
4.88
19 .47
. 00
. 00
149.2787
82.4263
.0000
29.9108
load removal efficiency = 79.96
continuity errors: volume = .00
%, adjusted = 79.96
%, load	= .00
extreme values over all storms
base minimufti maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.03 3.00	.29
= Coastal Zone Study(SE)
= segsli.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 16
maximum
velocity
ft/sec
. 00
wet
period
%
57 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
1 acre, gas station/fast food
Infiltration Basin
pervious soil
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
1. 000
.950
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.010
storage pool area acres =	.013
storage pool volume ac-ft =	.034
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b	1.00	.95 95.0	.01	.03 2.63
24 OVERALL	1.00	.95 95.0	.01	.03 2.63
total-storage	zmean
acres ac-ft	fer*-
.01	.03	2.(
.01	.03	2.L-
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 infilt b 1.38	.43 1.31
2 5 OVERALL	1.38	.43 1.31
vb/at
inches
.41
.41
total-storage
ab/at vb/at
% inches
1.31	.41
1.31	.41
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 13 3. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
storm duration =
type = pond ,
f low
acre-ft
.06
. 06
. 00
8. hrs, precip =
variable = tss
load	cone
lbs	ppm
24.35	149.2787
4.87	29.8463
19.48	.0000
.78 inches
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
06
06
06
00
00
00
24 .35
4 . 87
4.87
19 .48
. 00
. 00
149.2787
29.8463
29.8463
load removal efficiency = 80.00 %,
continuity errors: volume = -.01 %,
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.01 2.06
= Coastal Zone Study(SE)
= SEGS1D.INP
device
1 dry pond
case title
case data file
storm data file = czmsest.stm
adjusted =
load	=
maximum
inflow
cf s
.29
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
80 . 00
. 00
maximum
outflow
cf s
. 04
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class - NURP 50%
southeast rainfall zone
1 acre, fast food/ gas station
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
1. 000
. 950
. 020
72.000
. 000
1. 000
watershed area	acres	=
impervious fraction	=
impervious depression storage inches	=
scs curve number (pervious portion)	=
sweeping frequency times/week =
water quaility load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 021
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
- -
. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres
-
. 028
flood pool volume
ac-ft
=
. 100
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient

. 600
outlet weir length
feet
-
. 000
weir discharge coefficient

=
3.300
perforated riser height
feet
=
. 000
number of holes in riser

--
. 000
hole diameter
inches
=
. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 1.00 .95 95.0	.02 .00 .00 .03	.10 3.5
24 OVERALL 1.00 .95 95.0	.02 .00 .00 .03	.10 3.5«
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 2.25	.00 2.14.	.00
25 OVERALL	2.25	.00 2.14	.00
total-storage
ab/at vb/at
% inches
2.85 1.20
2.85 1.20
flood-storage
vb/at
inches
1.20
1.20
-------
number of storms =
interval = 13 3. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
storm duration =
type = pond ,
flow
acre-ft
. 01
. 01
. 00
8. hrs, precip = .78 inches
variable = tss
load	cone
lbs	ppm
5.13	149.2787
1.02	29.8473
4.10	.0000
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
01
01
01
00
,00
, 00
5.
1.
1.
4 .
13
02
02
10
00
00
149.2787
29 .8473
29.8473
load removal efficiency = 80.00 %,
continuity errors: volume = -.01 %,
adjusted =
load	=
80.00
. 00
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
over
base
elev elev
ft	ft
.00	.02
= Coastal Zone
= sesfId.inp
czmsest.stm
czm_nurp.par
prov6988.tmp
elev
ft
2 . 06
maximum
inflow
cf s
. 06
Study(SE)
maximum
outflow
cf s
.01
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
1 acre, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
1.000
.200
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping freguency	times/week =
water guality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation feet =	.000
bottom area acres =	.005
permanent pool area acres =	.000
permanent pool volume ac-ft =	.000
perm, pool infiltration rate in/hr =	.000000
flood pool area acres '=	.006
flood pool volume ac-ft =	.021
flood pool infiltration rate in/hr =	.000000
flood pool drain time hours =	48.000
outlet orifice diameter inches =	.000
orifice discharge coefficient =	.600
outlet weir length feet =	.000
weir discharge coefficient =	3.300
perforated riser height feet =	.000
number of holes in riser =	.000
hole diameter inches =	.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 dry pond 1.00 .20 20.0	.00 .00 .00
24 OVERALL 1.00 .20 20.0	.00 .00 .00
total-storage	zmean
acres ac-ft	fee
.01 .02	3.9
.01 .02	3.5'u
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at	vb/at
device % inches %	inches
1 dry pond 2.27 .00 .45	.00
25 OVERALL 2.27 .00 .45	.00
total-storage
ab/at vb/at
% inches
.61	.25
.61	.25
flood-storage
vb/at
inches
.25
.25
-------
number of storms = 1



interval = 13 3. hrs, storm
duration =
8. hrs, precip = .78
device = 1 infilt b, type =
infiltr ,
variable = tss


flow
load
cone
mass-balance term
acre-ft
lbs
PPm
01 watershed inflows
. 01
5. 13
149.2787
03 infiltrate
.01
.44
20.3545
04 exfiltrate
. 01
. 00
. 0000
05 filtered
. 00
. 44
. 0000
07 spillway outlet
. 00
1. 02
82.0427
08 sedimen + decay
. 00
3 . 66
. 0000
09 total inflow
. 01
5. 13
149.2787
10 surface outflow
. 00
1.02
82.0427
11 groundw outflow
. 01
. 00
.0000
12 total outflow
. 01
1.02
29.8335
13 total trapped
. 00
4 . 10

14 storcige increase
.00
. 00

15 mass balance check
. 00
. 00

load removal efficiency =
80.01 %,
adjusted = 80.01
%
continuity errors: volume =
.00 %,
load = .00
%
inches
extreme values over all storms
base minimum maximum maximum maximum maximum
elev elev elev inflow outflow velocity
device	ft	ft	ft	cfs	cfs ft/sec
1 infilt b	.00	.06 3.00	.06	.03	.00
case title	= Coastal Zone Study(SE)
case data file = sesfli.inp
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
wet
period
%
57.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
1 acre, single family
Infiltration Basin
pervious soil
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
1.000
. 200
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b,
type
infiltr
bottom elevation feet =	.000
bottom area acres =	.002
storage pool area acres =	.003
storage pool volume ac-ft =	.007
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface	runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft feet
1 infilt b 1.00 .20 20.0	.00 .01 2.62
24 OVERALL 1.00 .20 20.0	.00 .01 2.62
total-storage zmear
acres ac-ft fe
.00	.01 2.
.00	.01 2.62
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.39	.44	.28	.09
25 OVERALL	1.39	.44	.28	.09
total-storage
ab/at vb/at
% inches
.28	.09
.28	.09
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 13 3. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
storm duration =
type = pond ,
flow
acre-ft
.01
. 01
. 00
8. hrs, precip =
variable = tss
load
lbs
5 .13
1.02
4 . 10
.78 inches
cone
ppm
149.2787
29.8473
. 0000
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
01
01
01
00
00
00
5.
1.
1,
4
13
02
02
10
00
00
149.2787
29.8473
29.8473
load removal efficiency = 80.00
continuity errors: volume = -.01
adjusted =
load	=
80.00
. 00
extreme values
over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.02 2.06	.06
= Coastal Zone Study(SE)
= sesfld.inp
device
1 dry pond
case title
case data file
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
maximum maximum
outflow velocity
cfs
. 01
ft/sec
. 00
wet
period
%
42 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
1 acre, single family
ED dry pond
watershed	= l watersh
surface runoff device = 1 dry pond
percolation device = 0
1. 000
.200
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation feet =	.000
bottom area acres =	.005
permanent pool area acres =	.000
permanent pool volume ac-ft =	.000
perm, pool infiltration rate in/hr =	.000000
flood pool area acres =	.006
flood pool volume ac-ft =	.021
flood pool infiltration rate in/hr =	.000000
flood pool drain time hours =	48.000
outlet orifice diameter inches =	.000
orifice discharge coefficient =	.600
outlet weir length feet =	.000
weir discharge coefficient =	3.300
perforated riser height feet =	.000
number of holes in riser =	.000
hole diameter inches =	. 000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 dry pond 1.00 .20 20.0 .00 .00	.00
24 OVERALL 1.00 .20 20.0 .00 .00 .00
total-storage zmean
acres ac-ft fee"
.01	.02 3.5
.01	.02 3.5^
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 2.27	.00	.45	.00
25 OVERALL	2.27	.00	.45	.00
total-storage
ab/at vb/at
% inches
.61	.25
.61	.25
flood-storage
vb/at
inches
.25
.25
-------
number of storms =	1
interval = 13 3. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
.25
.25
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
25
25
25
00
,00
. 00
8. hrs, precip =
.78 inches
variable = tss
load
lbs
102.52
20.52
82 .00
102.52
20. 52
20.52
82 . 00
. 00
. 00
cone
ppm
149.2787
29.8700
.0000
149.2787
29.8700
29.8700
load removal efficiency = 79.99 %, adjusted = 79.99 %
continuity errors: volume = -.01 %, load	= .00 %
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= sesflOd.inp
= czmsest.stm
- czm_nurp.par
= prov6988.tmp
elev
ft
2.07
maximum
inflow
cfs
1.23
Study(SE)
maximum
outflow
cfs
. 16
maximum
velocity
ft/sec
.00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
.400
. 020
60.000
. 000
1. 000
watershed area	acres	=
impervious fraction	=
impervious depression storage inches	=
scs curve number (pervious portion)	=
sweeping frequency	times/week	=
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation feet =	.000
bottom area acres =	.090
permanent pool area acres =	.000
permanent pool volume- ac-ft =	.000
perm, pool infiltration rate in/hr =	.000000
flood pool area acres =	.119
flood pool volume ac-ft =	.418
flood pool infiltration rate in/hr =	.000000
flood pool drain time hours =	48.000
outlet orifice diameter inches =	.000
orifice discharge coefficient =	.600
outlet weir length feet =	.000
weir discharge coefficient =	3.300
perforated riser height feet =	.000
number of holes in riser =	.000
hole diameter inches =	.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 dry pond
2 4 OVERALL
acres
10. 00
10. 00
acres
4 . 00
4 . 00
40.0
40.0
acres
. 09
. 09
ac-ft
. 00
. 00
feet
. 00
. 00
total-storage	zmean
acres ac-ft	fee-*
.12	.42	3.E
.12	.42	3.1,
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at	vb/at
device % inches %	inches
1 dry pond 2.24 .00 .90	.00
25 OVERALL 2.24 .00 .90	.00
total-storage
ab/at vb/at
% inches
1.19	.50
1.19	.50
flood-storage
vb/at
inches
. 50
. 50
-------
number of storms =
interval = 13 3. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
.25
. 16
. 16
. 00
.09
. 00
.25
. 09
. 16
.25
. 00
. 00
. 00
8. hrs, precip =
.78 inches
variable = tss
load
lbs
102.52
8 . 88
.00
8.88
20.53
73 . 10
102.52
20.53
. 00
20. 53
81. 98
. 00
. 00
cone
ppm
149.2787
20.2788
.0000
. 0000
82.4908
. 0000
149.2787
82.4908
.0000
29.9011
load removal efficiency = 79.97 %, adjusted = 79.97
continuity errors: volume = .00 %, load	= .00
extreme values
device
1 infilt b
case title
case datai file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
3 . 00
over
base
elev elev
• ft	ft
.00	.02
= Coastal Zone
= sesflOi.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
maximum
inflow
cf s
1.23
Study(SE)
maximum	maximum	wet
outflow	velocity	period
cfs	ft/sec	%
.69	.00	57.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, single family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
.400
. 020
60.000
. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
-------
water quality load factor
1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	.041
storage pool area acres =	.055
storage pool volume ac-ft =	.14 5
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 infilt b
2 4 OVERALL
acres
10.00
10. 00
acres
4 . 00
4.00
40.0
40.0
acres
. 06
. 06
ac-ft
. 14
. 14
feet
2 . 63
2.63
total-storage zme,
acres ac-ft fet_
.06	.14 2.6 3
.06	.14 2.1
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.38	.43	.55	.17
25 OVERALL	1.38	.43	.55	.17
total-storage
ab/at vb/at
% inches
.55	.17
.55	.17
flood-storage
vb/at
inches
. 00
. 00
-------
number of
interval =
device =
storms =
133. hrs,
1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
.25
.25
. 00
.25
.25
.25
. 00
. 00
. 00
8. hrs, precip =
variable = tss
load
lbs
102.52
20.52
82 . 00
.78 inches
102.52
20.52
20.52
82 . 00
. 00
.00
cone
PPm
149.2787
29.8700
.0000
149.2787
29.8700
29.8700
load removal efficiency = 79.99 %, adjusted = 79.99
continuity errors: volume = -.01 %, load	= .00
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
over all storms
base minimum maximum	maximum	maximum	maximum	wet
elev elev elev	inflow	outflow	velocity	period
ft ft ft	cfs	cfs	ft/sec	%
.00 .00 2.07	1.23	.16	.00	42.9
Coastal Zone Study(SE)
sesflOd.inp
czmsest.stm
czm_nurp.par
prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
.400
. 020
12.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 090
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
—
.000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres
=
. 119
flood pool volume
ac-ft
=
.418
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
=
.600
outlet weir length
feet
=
. 000
weir discharge coefficient

-
3. 300
perforated riser height
feet
-
. 000
number of holes in riser

=
. 000
hole diameter
inches:
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 dry pond
24 OVERALL
acres
10. 00
10 . 00
acres
4 . 00
4 . 00
40 . 0
40.0
acres
. 09
. 09
ac-f t
. 00
. 00
feet
. 00
. 00
total-storage	zmes
acres ac-ft	fee
. 12 .42	3 . 5(J
.12 .42	3.50
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at	vb/at
device % inches %	inches
1 dry pond 2.24 .00 .90	.00
25 OVERALL 2.24 .00 .90	.00
tota1-storage
ab/at vb/at
% inches
1.19	.50
1.19	.50
flood-storage
vb/at
inches
. 50
. 50
-------
number of storms =	1
interval = 133. hrs, storm duration =
device = 1 dry pond, type = pond ,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
flow
acre-ft
. 38
. 38
. 00
. 38
. 38
. 38
. 00
.00
. 00
load removal efficiency = 79.99
continuity errors: volume = -.01
8. hrs, precip =
.78 inches
variable = tss
load
lbs
153.78
30.77
123.00
153.78
30.77
30.77
123.00
.00
.00
adjusted = 79.99
load	= .00
cone
ppm
149.2787
29.8700
. 0000
149.2787
29.8700
29.8700
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
2 . 07
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= semflOd.inp
czmsest.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cf s
1. 84
Study(SE)
maximum
outflow
cf s
.25
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.600
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	60.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = 1 dry pond, type = l pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 134
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
-
. 179
flood pool volume
ac-ft

. 627
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

-
3 . 300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches.
=
. 000
particle removal scale factor
-
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
fe<
3.!
3 . Li J
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 10.00 6.00 60.0 .13 .00 .00	.18 .63
24 OVERALL 10.00 6.00 60.0 .13 .00 .00	.18 .63
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 2.24 .00 1.34 .00	1.79 .75	.75
25 OVERALL 2.24 .00 1.34 .00	1.79 .75	.75
-------
number of storms =
interval = 133. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surfcice outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storcige increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
.38
.24
.24
.00
. 14
. 00
.38
. 14
.24
.38
.00
. 00
. 00
8. hrs,
variable =
load
lbs
153.78
13 . 32
. 00
13 . 32
30.80
109.65
153.78
30.80
. 00
30.80
122.97
. 00
. 00
precip =
tss
.78 inches
cone
ppm
149.2787
20.2774
.0000
.0000
82.4989
. 0000
149.2787
82.4989
.0000
29.9034
load removal efficiency = 79.97 %, adjusted = 79.97
continuity errors: volume = .00 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
device	ft	ft	ft	cfs
1 infilt b	.00	.02 3.00	1.84
case title	= Coastal Zone Study(SE)
case data file = semflOi.inp
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
maximum
outflow
cfs
1. 04
maximum
velocity
ft/sec
. 00
wet
period
%
57 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 600
.020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b,
type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.062
storage pool area acres =	.083
storage pool volume ac-ft =	.217
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 10.00	6.00 60.0	.08	.22 2.63
24 OVERALL	10.00	6.00 60.0	.08	.22 2.63
total-storage	zmean
acres ac-ft fer"1-
.08 .22 2.
.08 .22 2 .
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.38	.43	.83	.26
25 OVERALL	1.38	.43	.83	.26
total-storage
ab/at vb/at
% inches
.83	.26
.83	.26
flood-storage
vb/at
inches
.00
. 00
-------
number of storms =
interval = 133. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 38
. 38
. 00
. 38
. 38
. 38
. 00
. 00
. 00
8. hrs, precip =
variable = tss
load
lbs
153.78
30.77
123.00
.78 inches
153 ,
30,
30
123
78
77
77
00
00
00
cone
ppm
149.2787
29.8700
. 0000
149.2787
29.8700
29.8700
load removal efficiency = 79.99 %, adjusted = 79.99
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 2.07	1.84
= Coastal Zone Study(SE)
= semflOd.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
.25
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
precipitfition volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm	file = 3
storm dates  start =	0, keep = 0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 600
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
.000
bottom area
acres

. 134
permanent pool area
acres
:
. 000
permanent pool volume
ac-ft
=
.000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 179
flood pool volume
ac-ft
-
. 627
flood pool infiltration rate
in/hr

.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient
=
.600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
.000
hole diameter
inches
=
. 000
particle removal scale factor
=
1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean	total-storage zmean
device	acres acres	% acres ac-ft feet	acres ac-ft fei "
1 dry pond 10.00	6.00 60.0	.13	.00 .00	.18	.63
24 OVERALL	10.00	6.00 60.0	.13	.00 .00	.18	.63
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 2.24 .00 1.34 .00	1.79 .75	.75
25 OVERALL 2.24 .00 1.34 .00	1.79 .75	.75
-------
number of storms =	1
interval = 13 3. hrs, storm duration =
device == 1 dry pond, type = pond ,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
flow
acre-ft
.51
. 51
. 00
. 51
. 51
. 51
. 00
. 00
. 00
8. hrs, precip =
.78 inches
variable = tss
load
lbs
205.03
41. 03
164.00
205 ,
41,
41.
164 ,
03
03
03
00
00
00
cone
ppm
149.2787
29.8700
. 0000
149.2787
29.8700
29 . 8700
load removal efficiency = 79.99
continuity errors: volume = -.01
adjusted =
load	=
79 . 99
. 00
extreme values over all storms
base minimum maximum
elev elev elev
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
ft	ft	ft
.00	.00 2.07
= Coastal Zone Study(SE)
= secmlOd.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
maximum
inflow
cf s
2.45
maximum
outflow
cf s
.33
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 800
.020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = l pond
bottom elevation
feet
=
. 000
bottom area
acres
T
. 179
permanent pool area
acres
~
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres

.239
flood pool volume
ac-ft
-
.836
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches
=
. 000
particle removal scale factor
=
1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmea^
f ei
3 . !
3 . 50
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 10.00 8.00 80.0 .18 .00 .00	.24 .84
24 OVERALL 10.00 8.00 80.0 .18 .00 .00	.24 .84
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
de'vice % inches % inches	% inches	inches
1 dry pond 2.24 .00 1.79 .00	2.39 1.00	1.00
25 OVERALL 2.24 .00 1.79 .00	2.39 1.00	1.00
-------
number of storms =
interval = 133. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
storm duration =
type = infiltr ,
flow
acre-ft
.51
.32
.32
.00
. 18
. 00
8. hrs, precip =
variable = tss
load	cone
lbs	ppm
205.03	149.2787
17.76	20.2767
.00	.0000
17.76	.0000
41.07	82.5026
146.20	.0000
.78 inches
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
51
18
,32
,51
, 00
,00
,00
205.03
41. 07
.00
41.07
163.96
. 00
. 00
149.2787
82.5026
.0000
29.9039
load removal efficiency = 79.97 %, adjusted = 79.97
continuity errors: volume = . 00 %, load	= .00
extreme values over all storms
base minimum maximum
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
elev elev
ft	ft
.00	.02
= Coastal Zone
= secmlOi.inp
czmsest.stm
czm_nurp.par
prov6988.tmp
elev
ft
3 . 00
maximum
inflow
cf s
2.45
Study(SE)
maximum
outflow
cf s
1. 38
maximum
velocity
ft/sec
. 00
wet
period
%
57.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
.800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.08 3
storage pool area acres =	.110
storage pool volume ac-ft =	.289
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 infilt b 10.00 8.00 80.0	.11 .29 2.63
24 OVERALL 10.00 8.00 80.0	.11 .29 2.63
total-storage zmean
acres ac-ft fe |
.11	.29 2. |
.11	.29 2.63
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device % inches %	inches
1 infilt b 1.38 .43 1.10	.35
2 5 OVERALL 1.38 .43 1.10	.35
total-storage
ab/at vb/at
% inches
1.10	.35
1.10	.35
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 133. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
.51
. 51
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
51
51
51
00
00
, 00
8. hrs, precip =
.78 inches
variable = tss
load
lbs
205.03
41.03
164.00
205.03
41. 03
41. 03
164.00
. 00
. 00
cone
ppm
149.2787
29.8700
.0000
149 . 2787
29.8700
29.8700
load removal efficiency = 79.99 %,
continuity errors: volume = -.01 %,
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 2.07
= Coastal Zone Study(SE)
= secmlOd.inp
storm delta file = czmsest.stm
device
1 dry pond
case title
case data file
adjusted =
load	=
maximum
inflow
cf s
2 .45
particle: file
air temp file
= czm_nurp.par
= prov6988.tmp
79 . 99
. 00
maximum
outflow
cf s
.33
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
1. 000
1. 000
3
keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
10 acres, commercial
ED dry pond
precipitation volume factor	=
storm duration factor	=
number of passes through storm file =
storm dates  start =	0,
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 800
. 020
72.000
. 000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet

.000
bottom area
acres
=
. 179
permanent pool area
acres

.000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
.239
flood pool volume
ac-ft
=
.836
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
.000
weir discharge coefficient

=
3 .300
perforated riser height
feet
-
.000
number of holes in riser

--
. 000
hole diameter
inches
=
. 000
particle removal scale factor
=
1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage	zme;
device acres acres % acres ac-ft feet	acres ac-ft feet
1 dry pond 10.00 8.00 80.0 .18 .00 .00	.24 .84 3.!
24 OVERALL 10.00 8.00 80.0 .18 .00 .00	.24 .84 3.!
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 2.24 .00 1.79 .00	2.39 1.00	1.00
25 OVERALL 2.24 .00 1.79 .00	2.39 1.00	1.00
-------
number of storms =	1
interval = 133. hrs, storm duration =
device == 1 dry pond, type = pond ,
flow
acre-ft
2 .53
2 . 53
. 00
mass-balance term
01 watershed inflows
06 normsil outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
2
2
2
53
53
53
00
00
00
8. hrs, precip =
variable = tss
load
lbs
1025.17
205.15
820.02
1025.17
205.15
205.15
820.02
. 00
. 00
.78 inches
cone
ppm
149.2787
29.8700
.0000
149.2787
29.8700
29.8700
load removal efficiency = 79.99 %, adjusted = 79.99 %
continuity errors: volume = -.01 %, load	= .00 %
extreme values over all storms
base minimum maximum
elev
ft
. 00
device
1 dry pond
case title
case data file
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
elev elev
ft	ft
.00 2.07
= Coastal Zone Study(SE)
= seslOOd.inp
maximum
inflow
cf s
12 .26
maximum
outflow
cf s
1.65
maximum
velocity
ft/sec
.00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 400
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
.000
bottom area
acres
=
.896
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
—
1.194
flood pool volume
ac-ft
=
4 . 180
flood pool infiltration rate
in/hr
—
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
.000
hole diameter
inches
=
.000
particle removal scale factor
=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
f et
3 . f
3 . bo
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage	zmean	total-storage
device acres acres %	acres ac-ft feet	acres ac-ft
1 dry pond 100.00 40.00 40.0	.90 .00	.00	1.19 4.18
24 OVERALL 100.00 40.00 40.0	.90 .00	.00	1.19 4.18
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 2.24 .00 .90 .00	1.19 .50	.50
25 OVERALL 2.24 .00 .90 .00	1.19 .50	.50
-------
number of storms =
interval = 13 3. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
1.26
.81
.81
.00
.46
. 00
1.26
.46
.81
1.26
.00
. 00
. 00
8. hrs,
variable =
load
lbs
512.58
44 . 39
. 00
44 . 39
102.67
365.52
512.58
102.67
. 00
102.67
409.91
. 00
. 00
precip
tss
78 inches
cone
ppm
149.2787
20.2759
. 0000
.0000
82.5077
.0000
149.2787
82.5077
.0000
29.9009
load removal efficiency = 79.97 %,
continuity errors: volume = .00 %,
adjusted = 79.97 %
load	-	.00 %
extreme values
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
3 .00
over
base
elev elev
ft	ft
.00	.02
= Coastal Zone
= ses50i.inp
czmsest.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cf s
6 . 13
Study(SE)
maximum
outflow
cf s
3 .46
maximum
velocity
ft/sec
. 00
wet
period
%
57 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
50 acres, single-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
.400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve, number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.207
storage pool area acres =	.27 5
storage pool volume ac-ft =	.723
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 20.00 40.0	.28	.72 2.63
24 OVERALL	50.00 20.00 40.0	.28	.72 2.63
total-storage	zmean
acres ac-ft	fee*-
.28	.72	2. (
.28	.72	2. (
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.38	.43	.55	.17
25 OVERALL	1.38	.43	.55	.17
total-storage
ab/at vb/at
% inches
.55	.17
.55	.17
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 13 3. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
2 .53
2.53
.00
2 ,
2
2
53
53
53
00
00
00
8. hrs, precip =
variable = tss
load	cone
lbs	ppm
1025.17	149.2787
205.15	29.8700
820.02	.0000
.78 inches
1025.17
205.15
205.15
820.02
. 00
. 00
149.2787
29.8700
29.8700
load removal efficiency =
continuity errors: volume =
79.99 %,
-.01 %,
adjusted
load
79.99
. 00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 2.07	12.26
= Coastal Zone Study(SE)
= seslOOd.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm delta file
particle file
air temp file
maximum
outflow
cfs
1. 65
maximum
velocity
ft/sec
.00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device^ = 0
100.000
.400
.020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quclity load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 896
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
-
.000
perm, pool infiltration rate
in/hr
-
.000000
flood pool area
acres
=
1.194
flood pool volume
ac-ft
=
4. 180
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
-
.000
orifice discharge coefficient

. 600
outlet weir length
feet
-
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
: -
. 000
number of holes in riser


. 000
hole diameter
inches
--
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
fee'
3 . 5
3 . 5„
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 100.00 40.00 40.0 .90 .00 .00	1.19 4.18
24 OVERALL 100.00 40.00 40.0 .90 .00 .00	1.19 4.18
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at	vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 2.24 .00 .90	.00	1.19 .50	.50
25 OVERALL 2.24 .00 .90	.00	1.19 .50	.50
-------
number of storms =
interval = 13 3. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
3 .79
3 . 79
. 00
3.79
3 .79
3.79
. 00
. 00
. 00
8. hrs, precip =
.78 inches
variable = tss
load
lbs
1537 .75
307.73
1230.02
1537.75
307.73
307.73
1230.02
. 00
. 00
cone
PPm
149.2787
29 .8700
.0000
149.2787
29.8700
29.8700
load removal efficiency = 79.99
continuity errors: volume = -.01
adjusted = 79.99 %
load	= .00 %
extreme values over all storms
base minimum maximum	maximum	maximum	maximum	wet
elev elev elev	inflow	outflow	velocity	period
ft ft ft	cfs	cfs	ft/sec	%
.00 .00 2.07	18.39	2.47	.00	42.9
device
1 dry pond
case title
case data file
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
= Coastal Zone
= semlOOd.inp
Study(SE)
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
100 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
60.000
. 000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
bottom area
permanent pool area
permanent pool volume
perm, pool infiltration rate
flood pool area
flood pool volume
flood pool infiltration rate
flood pool drain time
outlet orifice diameter
orifice discharge coefficient
outlet weir length
weir discharge coefficient
perforated riser height
number of holes in riser
hole diameter
particle removal scale factor
feet
=
. 000
acres

1.344
acres
=
. 000
ac-ft
=
. 000
in/hr
—
.000000
acres
-
1. 792
ac-ft
=
6.270
in/hr
=
. 000000
hours
=
48.000
inches
=
. 000

=
. 600
feet

.000


3 .300
feet
-
. 000

:
. 000
inches
=
. 000


1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
acres acres	% acres ac-ft feet
100.00 60.00 60.0 1.34	.00 .00
100.00 60.00 60.0 1.34	.00 .00
device
1 dry pond
2 4' OVERALL
total-storage	zmean
acres ac-ft	fe<
1.79 6.27	3.!
1.79 6.27	3.bu
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 dry pond 2.24	.00 1.34
25 OVERALL	2.24	.00 1.34
vb/at
inches
. 00
. 00
total-storage
ab/at vb/at
% inches
1.79	.75
1.79	.75
flood-storage
vb/at
inches
.75
.75
-------
number of storms =
interval
device =
133. hrs,
1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
1.
1.
1.
90
21
21
00
69
00
1.90
.69
1.21
1.89
.00
. 00
. 00
8. hrs, precip =
variable = tss
load	cone
lbs	ppm
768.88	149.2787
66.59	20.2757
.00	.0000
66.59	.0000
154.01	82.5090
548.28	.0000
.78 inches
768.88
154.01
.00
154.01
614.87
. 00
. 00
149.2787
82.5090
.0000
29.9007
load removal efficiency = 79.97
continuity errors: volume = .00
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.02 3.00
device
1 infilt b
case titLe
case data file
storm data file
particle file
air temp file
adjusted = 79.97
load	= .00
maximum
inflow
cf s
9 .20
= Coastal Zone Study(SE)
= sem50i.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
maximum	maximum	wet
outflow	velocity	period
cfs	ft/sec	%
5.18	.00	57.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
50 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 600
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	.310
storage pool area acres =	.413
storage pool volume ac-ft =	1.084
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 30.00 60.0	.41 1.08 2.63
24 OVERALL	50.00 30.00 60.0	.41 1.08 2.63
total-storage zmean
acres ac-ft fe< '
.41 1.08 2.(
.41 1.08 2.C ^
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b 1.38	.43	.83	.26
25 OVERALL	1.38	.43	.83	.26
total-storage
ab/at vb/at
% inches
.83	.26
.83	.26
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 13 3. hrs,	storm duration =
device = 1 dry pond,	type = pond ,
flow
mass-balance term	acre-ft
01 watershed inflows	3.79
06 normal outlet	3.79
08	sedimen + decay	.00
09	total inflow	3.79
10	surface outflow	3.79
12	total outflow	3.79
13	total trapped	.00
14	storage increase	.00
15	mass balance check	.00
load removal efficiency = 79.99 %,
continuity errors: volume = -.01 %,
8. hrs, precip =
variable = tss
load
lbs
1537.75
307.73
1230.02
.78 inches
1537 .
307 .
307 .
1230.
adjusted
load
75
73
73
02
00
00
cone
ppm
149.2787
29.8700
. 0000
149.2787
29.8700
29.8700
79 .99
. 00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
device	ft	ft	ft	cfs
1 dry pond	.00	.00 2.07	18.39
case title	= Coastal Zone Study(SE)
case data file = semlOOd.inp
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
maximum
outflow
cfs
2.47
maximum
velocity
ft/sec
. 00
wet
period
%
42 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start -	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
100 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet

. 000
bottom area
acres
::
1.344
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
1. 792
flood pool volume
ac-ft
=
6. 270
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient


3 .300
perforated riser height
feet

. 000
number of holes in riser

=
. 000
hole diameter
inches

.000
particle removal scale factor

1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage zmean
device acres acres % acres ac-ft feet	acres ac-ft fee
1 dry pond 100.00 60.00 60.0 1.34 .00 .00	1.79 6.27 3.^
24	OVERALL 100.00 60.00 60.0 1.34 .00 .00	1.79 6.27 3.50
normalized device areas and volumes
	 dead-storage 	 total-storage	flood-storage
ab/ai vb/ai ab/at vb/at ab/at vb/at	vb/at
device % inches % inches % inches	inches
1 dry pond 2.24 .00 1.34 .00 1.79 .75	.75
25	OVERALL 2.24 .00 1.34 .00 1.79 .75	.75
-------
number of storms =	1
interval = 13 3. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
5.05
5. 05
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
05
05
05
00
00
. 00
8. hrs, precip
.78 inches
variable = tss
load
lbs
2050.34
410.31
1640.03
2050.34
410.31
410.31
1640.03
. 00
. 00
cone
ppm
149.2787
29.8701
. 0000
149.2787
29.8701
29.8701
load removal efficiency = 79.99 %,
continuity errors: volume = -.01 %,
extreme values over all storms
base minimum maximum
elev elev elev
device	ft	ft	ft
1 dry pond	.00	.00 2.07
case title	= Coastal Zone Study(SE)
case data file = seclOOd.inp
storm data file = czmsest.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
adjusted =
load	=
maximum
inflow
cf s
24 . 52
79 . 99
. 00
maximum
outflow
cf s
3.29
maximum
velocity
ft/sec
. 00
wet
period
%
42.9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.800
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet
:
. 0 0 0
bottom area
acres
=
1.792
permanent pool area
acres
-
.000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
2.389
flood pool volume
ac-ft
—
8.360
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
.000
weir discharge coefficient

T
3 .300
perforated riser height
feet
-
.000
number of holes in riser

=
. 000
hole diameter
inches

. 000
particle removal scale factor

1.000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SE)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 100.00 80.00 80.0	1.79 .00 .00 2.39 8.36 3.5
24 OVERALL 100.00 80.00 80.0	1.79 .00 .00 2.39 8.36 3.5u
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 2.24 .00 1.79 .00	2.39 1.00	1.00
25 OVERALL 2.24 .00 1.79 .00	2.39 1.00	1.00
-------
SOUTHWEST REGION RESULTS
-------
number of storms =
interval = 47 6. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
. 17
. 10
. 10
. 00
. 07
. 00
. 17
. 07
. 10
. 17
. 00
. 00
. 00
12. hrs, precip =
variable = tss
load	cone
lbs	ppro
75.92	160.8435
6.34	22.6316
.00	.0000
6.34	.0000
15.18	79.2589
54.40	.0000
.54 inches
load removal efficiency = 80.00
continuity errors: volume = .04
75.92
15 . 18
. 00
15. 18
60.74
. 00
. 00
adjusted = 80.00
load	= .00
160.8435
79.2589
.0000
32 .1766
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.01 3.00	.50
= Coastal Zone Study(SW)
= swsflOi.inp
= czmswst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
.23
maximum
velocity
ft/sec
. 00
wet
period
%
17 .0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, single family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
.400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
infiltr
bottom elevation feet =	.000
bottom area acres =	.025
storage pool area acres =	.034
storage pool volume ac-ft =	.088
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft	feet
1 infilt b 10.00 * 4.00 40.0	.03 .09	2.63
24 OVERALL 10.00 4.00 40.0	.03 .09	2.63
total-storage zmean
acres ac-ft fe< ~
.03	.09 2.i
.03	.09 2.oj
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
.84	.26	.34
.84	.26	.34
vb/at
inches
. 11
. 11
total-storage
ab/at vb/at
% inches
.34	.11
.34	.11
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 13 3. hrs,
device == 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
2. 53
1.61
1.61
. 00
. 92
.00
8. hrs, precip =
variable = tss
load	cone
lbs	ppm
1025.17	149.2787
88.77	20.2751
.00	.0000
88.77	.0000
205.38	82.5118
731.02	.0000
.78 inches
53
92
,61
, 53
, 00
, 00
, 00
1025.17
205.38
.00
205.38
819.79
. 00
. 00
149.2787
82.5118
.0000
29.9056
load removal efficiency = 79.97 %, adjusted = 79.97
continuity errors: volume = .00 %, load	= .00
extreme values
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
over all storms
base minimum maximum	maximum	maximum	maximum	wet
elev elev elev	inflow	outflow	velocity	period
ft ft ft	cfs	cfs	ft/sec	%
.00 .02 3.00	12.26	6.91	.00	57.9
= Coastal Zone Study(SE)
= sec50i.inp
= czmsest.stm
- czm_nurp.par
= prov6988.tmp
precipitcition volume factor	=	1.000
storm duration factor	=	1.000
number of passes through storm	file =	3
storm dates  start =	0,	keep = 0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
50 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	.413
storage pool area acres =	.551
storage pool volume ac-ft =	1.446
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 40.00 80.0	.55 1.45 2.63
24 OVERALL	50.00 40.00 80.0	.55 1.45 2.63
total-storage	zmean
acres ac-ft	fer"-
.55 1.45	2.<
.55 1.45	2.L_
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% -.inches
1 infilt b 1.38	.43 1.10	.35
25 OVERALL	1.38	.43 1.10	.35
total-storage
ab/at vb/at
% inches
1.10	.35
1.10	.35
flood-storage
vb/at
inches
.00
. 00
-------
number of storms =	1
interval = 13 3. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
5. 05
5. 05
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
5.
5.
5.
05
05
05
00
00
00
8. hrs, precip =
.78 inches
variable = tss
load
lbs
2050.34
410.31
1640.03
2050.34
410.31
410.31
1640.03
. 00
. 00
cone
ppm
149.2787
29 .8701
.0000
149.2787
29.8701
29.8701
load removal efficiency = 79.99 %, adjusted = 79.99
continuity errors: volume = -.01 %, load	= .00
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
2.07
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= seclOOd.inp
= czmsest.stm
= czm_nurp.par
= prov6988.tmp
maximum
inflow
cf s
24 . 52
Study(SE)
maximum
outflow
cf s
3 .29
maximum
velocity
ft/sec
. 00
wet
period
%
42 . 9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southeast rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	100.000
impervious fraction	=	.800
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	72.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
-
1.792
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
-
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
2. 389
flood pool volume
ac-ft
=
8. 360
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=:
. 000
weir discharge coefficient

=
3. 300
perforated riser height
feet
=
. 000
number of holes in riser

-
. 000
hole diameter
inches

. 000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SE)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean total-storage
device acres acres %	acres ac-ft feet acres ac-ft
1 dry pond 100.00 80.00 80.0	1.79 .00 .00 2.39 8.36
24 OVERALL 100.00 80.00 80.0	1.79 .00 .00 2.39 8.36
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 2.24 .00 1.79	.00	2.39 1.00	1.00
25 OVERALL 2.24 .00 1.79	.00	2.39 1.00	1.00
-------
number of storms =
interval = 476. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 17
. 17
. 00
. 17
. 17
. 17
.00
. 00
. 00
12. hrs, precip =
variable = tss
load
lbs
75.92
15.12
60.81
.54 inches
75.92
15. 12
15 . 12
60. 81
. 00
. 00
cone
ppm
160.8434
32.0186
. 0000
160.8434
32.0186
32.0186
load removal efficiency = 80.09 %, adjusted = 80.09
continuity errors: volume = -.01 %, load	= .00
extreme
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.87	.50
= Coastal Zone Study(SW)
= swsflOd.inp
= czmswst.stm
= czm_nurp.par
- prov6988.tmp
maximum
outflow
cfs
. 10
maximum
velocity
ft/sec
. 00
wet
period
%
12.4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.400
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	60.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 058
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 078
flood pool volume
ac-ft
-
. 272
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet

. 000
weir discharge coefficient

-
3. 300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches
=
. 000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 dry pond 10.00 4.00 40.0	.06 .00 .00
24 OVERALL 10.00 4.00 40.0	.06 .00 .00
normalized device areas and volumes
	 dead-storage 		total-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at
device % inches % inches	% inches
1 dry pond 1.46 .00 .58 .00	.78 .33
25 OVERALL 1.46 .00 .58 .00	.78 .33
total-storage	zmean
acres ac-ft fe<
.08	. 27	3. 1
.08	.27	3.50
flood-storage
vb/at
inches
.33
.33
-------
number of storms =
interval = 47 6. hrs,
device = 1 dry pond,
mass-baLance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 17
. 17
. 00
. 17
. 17
. 17
. 00
. 00
.00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
75.92	160.8434
15.12	32.0186
60.81	.0000
.54 inches
75.92
15. 12
15. 12
60.81
. 00
.00
160.8434
32.0186
32.0186
load removal efficiency = 80.09
continuity errors: volume = -.01
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 1.87
= Coastal Zone Study(SW)
= swsflOdi.inp
= czmswst.stm
= czm_nurp.par
= prov6988.tmp
adjusted =
load	=
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
inflow
cf s
. 50
80.09
. 00
maximum
outflow
cf s
. 10
maximum
velocity
ft/sec
. 00
wet
period
%
12.4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
.400
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres

. 058
permanent pool area
acres
=
.000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 078
flood pool volume
ac-ft
—
.272
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
i
.000
weir discharge coefficient


3 . 300
perforated riser height
feet

.000
number of holes in riser

-
. 000
hole diameter
inches

. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface
total impervious
device	acres acres	%
1 dry pond 10.00	4.00 40.0
24 OVERALL	10.00	4.00 40.0
runoff to each device
dead-storage zraean
acres
. 06
. 06
ac-f t
. 00
. 00
feet
. 00
. 00
total-storage zmean
acres ac-ft fe
.08	.27 3.
.08	.27 3.
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at	vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 1.46 .00 .58	.00	.78 .33	.33
25 OVERALL 1.46 .00 .58	.00	.78 .33	.33
-------
number of storms =
interval = 476. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
.26
.26
.00
.26
.26
.26
.00
. 00
.00
load removal efficiency = 80.09
continuity errors: volume = -.01
12. hrs, precip =
variable = tss
load
lbs
113.88
22 . 67
91.21
.54 inches
cone
ppm
160.8435
32.0183
. 0000
113.88
22 . 67
22 . 67
91.21
. 00
.00
adjusted = 80.09
load	= .00
160.8435
32 .0183
32.0183
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.87	.75
= Coastal Zone Study(SW)
= swmflOd.inp
storm data file = czmswst.stm
device
1 dry pond
case title
case data file
particle file
air temp file
- czm_nurp.par
= prov6988.tmp
maximum
outflow
cfs
. 14
maximum
velocity
ft/sec
. 00
wet
period
%
12 .4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 600
. 020
60.000
. 000
1. 000
watershed area	acres	=
impervious fraction	=
impervious depression storage inches	=
scs curve: number (pervious portion)	=
sweeping frequency	times/week	=
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
-
. 0 0 0
bottom area
acres
-
.087
permanent pool area
acres
-
. 000
permanent pool volume
ac-ft
=
.000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres

. 117
flood pool volume
ac-ft

.408
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
=
.600
outlet weir length
feet
7
. 000
weir discharge coefficient


3.300
perforated riser height
feet
-
. 000
number of holes in riser

—
. 000
hole diameter
inches
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
f e<
3. J
3 . bu
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device .acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 10.00 6.00 60.0 .09 .00 .00,	.12 .41
24 OVERALL 10.00 6.00 60.0 .09 .00 .00	.12 .41
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.46 .00 .87 .00	1.17 .49	.49
25 OVERALL 1.46 .00 .87 .00	1.17 .49	.49
-------
number of storms =
interval = 476. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfi.Ltrate
05	filtered
07	spillway outlet
08	sediinen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
storm duration =
type = infiltr ,
flow
acre-ft
. 26
. 15
. 15
. 00
. 11
. 00
.26
. 11
.15
.26
.00
.00
. 00
80.00 %,
.06 %,
12. hrs, precip =
variable = tss
load
lbs
.54 inches
113
9
9
22
88
51
00
51
77
81. 59
113.88
22 . 77
. 00
22.77
91. 11
. 00
. 00
cone
ppm
160.8435
22.6396
. 0000
. 0000
79.2592
. 0000
160.8435
79.2592
. 0000
32.1838
adjusted
load
80. 00
. 00
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev elev inflow outflow velocity period
ft	ft	ft	cfs	cfs ft/sec	%
.00	.00 3.00	.75	.35	.00 17.0
= Coastal Zone Study(SW)
= swmflOi.inp
device
1 infilt b
case title
case data file
storm data file = czmswst.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 600
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b,
type
= 2 infiltr
bottom elevation feet =	.000
bottom area acres =	.038
storage pool area acres =	.050
storage pool volume ac-ft =	.132
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft feet
1 infilt b 10.00 6.00 60.0	.05 .13 2.63
24 OVERALL 10.00 6.00 60.0	.05 .13 2.63
total-storage	zmean
acres ac-ft fer4-
.05 .13 2.(
.05 .13 2.l-
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 infilt b	.84	.26	.50
25 OVERALL	.84	.26	.50
vb/at
inches
. 16
. 16
total-storage
ab/at vb/at
% inches
.50	.16
.50	.16
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 476. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
storm duration =
type = pond ,
flow
acre-ft
.26
. 26
. 00
26
26
. 26
. 00
, 00
. 00
precip =
tss
80. 09
-.01
12. hrs,
variable =
load
lbs
113.88
22 . 67
91.21
113.88
22 . 67
22 . 67
91.21
. 00
. 00
adjusted = 80.09
load	= .00
54 inches
cone
ppm
160.8435
32.0183
.0000
160.8435
32.0183
32.0183
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev	elev inflow outflow velocity period
ft ft	ft cfs cfs ft/sec %
.00 .00	1.87 .75 .14 .00 12.4
= Coastal Zone Study(SW)
= swmflOd.inp
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.600
impervious depression storage inches	=	.02 0
scs curve number (pervious portion)	=	72.000
sweeping freguency times/week	=	.000
water guality load factor -	=	1.000
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 087
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
. 000000
flood pool area
acres
=
.117
flood pool volume
ac-ft

. 408
flood pool infiltration rate
in/hr

.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches

. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 dry pond 10.00	6.00 60.0	.09	.00 .00
24 OVERALL	10.00	6.00 60.0	.09	.00 .00
total-storage	zmean
acres ac-ft fe<
.12 .41 3.:
.12	.41 3 . Liu
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.46 .00 .87 .00	1.17 .49	.49
25 OVERALL 1.46 .00 .87 .00	1.17 .49	.49
-------
number of storms =
interval = 476. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
.35
.35
. 00
.35
.35
.35
. 00
.00
.00
12. hrs,
variable =
load
lbs
151.84
30.23
121.61
151.84
30.23
30.23
121.61
. 00
. 00
precip =
tss
.54 inches
cone
ppm
160.8434
32.0182
. 0000
160.8434
32.0182
32.0182
load removal efficiency = 80.09
continuity errors: volume = -.01
adjusted = 80.09
load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.87	1.00
= Coastal Zone Study(SW)
= swcmlOd.inp
= czmswst.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 19
maximum
velocity
ft/sec
. 00
wet
period
%
12.4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
.800
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping freguency	times/week =
water guality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 117
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 155
flood pool volume
ac-ft
=
. 544
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

—
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
. 000
hole diameter
inches

. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage zmean
device acres acres % acres ac-ft feet	acres ac-ft fee
1 dry pond 10.00 8.00 80.0 .12 .00 .00	.16 .54 3.5
24 OVERALL 10.00 8.00 80.0 .12 .00 .00	.16 .54 3.5u
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.46 .00 1.17 .00	1.55 .65	.65
25 OVERALL 1.46 .00 1.17 .00	1.55 .65	.65
-------
number of storms =
interval = 47 6. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
. 35
.21
.21
. 00
. 14
. 00
.35
. 14
.21
.35
. 00
. 00
. 00
12. hrs, precip =
variable = tss
load
lbs
151.84
12.70
. 00
12 .70
30.30
108.84
.54 inches
151.84
30.30
. 00
30.30
121.55
. 00
. 00
cone
ppm
160.8435
22.6497
. 0000
. 0000
79.2113
. 0000
160.8435
79.2113
. 0000
32.1157
load removal efficiency = 80.05 %, adjusted = 80.05
continuity errors: volume = .07 %, load	= .00
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev elev inflow outflow velocity period
ft	ft	ft	cfs	cfs ft/sec	%
.00	.00 3.00	1.00	.46	.00 17.0
= Coastal Zone Study(SW)
= swcmlOi.inp
device
1 infilt b
case title
case data file
storm data file = czmswst.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
.800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
.scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	. 051
storage pool area acres =	.067
storage pool volume ac-ft =	.177
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 infilt b 10.00 8.00 80.0	.07 .18 2.63
24 OVERALL 10.00 8.00 80.0	.07 .18 2.63
total-storage	zmean
acres ac-ft	fe<
.07	.18	2.<
.07	.18	2.63
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
ab/ai
%
. 84
. 84
-- dead-
vb/ai
inches
.27
.27
storage
ab/at
%
. 67
. 67
vb/at
inches
.21
.21
total-storage
ab/at vb/at
% inches
.67	.21
.67	.21
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 47 6. hrs,
device ¦•= 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 35
.35
. 00
. 35
. 35
.35
. 00
. 00
. 00
load removal efficiency = 80.09
continuity errors: volume = -.01
12. hrs,
variable =
load
lbs
151.84
30.23
121.61
151.84
30.23
30.23
121.61
. 00
. 00
adjusted =
load	=
precip =
tss
.54 inches
cone
PPm
160.8434
32.0182
. 0000
160.8434
32.0182
32.0182
80.09
.00
extreme values over all storms
base minimum maximum maximum maximum maximum
elev elev	elev inflow outflow velocity
ft ft	ft cfs cfs ft/sec
.00 .00	1.87 1.00 .19 .00
= Coastal Zone	Study(SW)
= swcmlOd.inp
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
wet
period
%
12.4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
10 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	10.000
impervious fraction	=	.800
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	72.000
sweeping frequency times/week	=	.000
water quaility load factor -	=	1.000
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet

.000
bottom area
acres

. 117
permanent pool area
acres
r-
. 000
permanent pool volume
ac-ft
—
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
r
. 155
flood pool volume
ac-ft
=
. 544
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
. 000
number of holes in riser

--
. 000
hole diameter
inches

. 000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fe<"
1 dry pond 10.00 8.00 80.0	.12 .00 .00 .16	.54 3.!
24 OVERALL 10.00 8.00 80.0	.12 .00 .00 .16	.54 3.L^
normalized device areas and volumes
		 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at	vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 1.46 .00 1.17	.00	1.55 .65	.65
25 OVERALL 1.46 .00 1.17	.00	1.55 .65	.65
-------
number of storms =
interval = 476. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
1.74
1.74
. 00
1.74
1.74
1.74
. 00
. 00
.00
12. hrs, precip =
.54 inches
variable = tss
load
lbs
759.22
151.15
608.07
759.22
151.15
151.15
608.07
. 00
.00
cone
ppm
160.8435
32.0182
. 0000
160.8435
32.0182
32.0182
load removal efficiency = 80.09 %,
continuity errors: volume = -.01 %,
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 1.87
= Coastal Zone Study(SW)
= swslOOd.inp
adjusted =
load	=
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
maximum
inflow
cf s
5. 00
particle file
air temp file
czm_nurp.par
prov6988.tmp
80. 09
. 00
maximum
outflow
cf s
.95
maximum
velocity
ft/sec
. 00
wet
period
o.
*o
12 . 4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 400
. 020
60.000
. 000
1. 000
watershed area	acres	=
impervious fraction	=
impervious depression storage inches	=
scs curve number (pervious portion)	=
sweeping frequency	times/week	=
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
.000
bottom area
acres
=
. 583
permanent pool area
acres
=
.000
permanent pool volume
ac-ft
--
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres

.777
flood pool volume
ac-ft

2 .719
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
=
.600
outlet weir length
feet
-
.000
weir discharge coefficient

—
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
. 000
hole diameter
inches
-
. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 dry pond
24 OVERALL
acres
100.00
100.00
acres
40. 00
40. 00
40.0
40.0
acres
. 58
. 58
ac-f t
. 00
. 00
feet
. 00
. 00
normalized device areas and volumes
device
1 dry pond
25 OVERALL
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
% inches	% inches
1.46	.00	.58	.00
1.46	.00	.58	.00
total-storage
ab/at vb/at
% inches
.78	.33
.78	.33
total-storage zmean
acres ac-ft fee
.78 2.72 3.5
.78 2.72 3.50
flood-storage
vb/at
inches
.33
.33
-------
number of storms =
interval = 47 6. hrs,
device := 1 infilt b,
mass-baLance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
.87
. 52
. 52
. 00
. 35
. 00
. 87
.35
. 52
. 87
. 00
. 00
. 00
12. hrs,
variable =
load
lbs
379.61
31.72
. 00
31.72
75.91
271.98
379.61
75.91
. 00
75.91
303.70
. 00
. 00
precip =
tss
54 inches
160
22
79
cone
ppm
.8435
.6508
.0000
. 0000
.2593
. 0000
160.8435
79.2593
. 0000
32.1935
load removal efficiency = 80.00
continuity errors: volume = .09
adjusted = 80.00
load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 3.00	2.50
= Coastal Zone Study(SW)
= sws50i.inp
= czmswst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum maximum	wet
outflow velocity	period
cfs . ft/sec	%
1.16 .00	17.0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
50 acres, single-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
.400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	time's/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b,
type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.12 6
storage pool area acres =	.168
storage pool volume ac-ft =	.441
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 infilt b
2 4 OVERALL
acres
50. 00
50. 00
acres
20. 00
20. 00
40.0
40.0
acres
. 17
. 17
ac-ft
.44
.44
feet
2 . 63
2 . 63
total-storage	zmean
acres ac-ft fee^"
.17 .44 2.6
.17 .44 2.6_
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 infilt b	.84	.26	.34
2 5 OVERALL	.84	.26	.34
Vb/at
inches
. 11
. 11
total-storage
ab/at vb/at
% inches
.34	.11
.34	.11
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 47 6. hrs, storm duration =
device == 1 dry pond, type = pond ,
flow
acre-ft
1.74
1.74
.00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
1.
1.
1.
74
74
74
00
00
00
80. 09
-.01
12. hrs, precip =
variable = tss
load
lbs
759.22
151.15
608.07
.54 inches
cone
ppm
160.8435
32.0182
. 0000
759.22
151.15
151.15
608.07
. 00
. 00
adjusted = 80.09
load	= .00
160.8435
32.0182
32.0182
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev elev inflow outflow velocity period
ft	ft	ft	cfs	cfs ft/sec	%
.00	.00 1.87	5.00	.95	.00 12.4
= Coastal Zone Study(SW)
= swslOOd.inp
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
particle file
air temp file
czm_nurp.par
prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.400
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
-
. 000
bottom area
acres
=
. 583
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
.777
flood pool volume
ac-ft
=
2. 719
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet
=
.000
weir discharge coefficient

=
3. 300
perforated riser height
feet
=
. 000
number of holes in riser

-
. 000
hole diameter
inches
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmean
device acres acres %	acres ac-ft feet acres ac-ft fee"
1 dry pond 100.00 40.00 40.0	.58 .00 .00 .78 2.72 3.?
24 OVERALL 100.00 40.00 40.0	.58 .00 .00 .78 2.72 3.L.
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.46	.00	.58	.00
25 OVERALL	1.46	.00	.58	.00
total-storage
ab/at vb/at
% inches
.78	.33
.78	.33
flood-storage
vb/at
inches
.33
.33
-------
number of storms =	1
interval = 47 6. hrs,	storm duration =
device == 1 dry pond,	type = pond ,
flow
mass-balance term	acre-ft
01 watershed inflows	2.61
06 normal outlet	2.61
08	sedimen + decay	.00
09	total inflow	2.61
10	surface outflow	2.61
12	total outflow	2.61
13	total trapped	.00
14	storage increase	.00
15	mass balance check	.00
load removal efficiency = 80.09 %,
continuity errors: volume = -.01 %,
12. hrs, precip =
.54 inches
variable = tss
load
lbs
1138.83
226.71
912.12
1138.83
226.71
226.71
912.12
. 00
. 00
adjusted = 80.09
load	= .00
cone
Ppm
160.8435
32.0163
. 0000
160.8435
32.0163
32.0163
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev	elev inflow outflow velocity period
ft ft	ft cfs cfs ft/sec %
.00 .00	1.87 7.50 1.43 .00 12.4
= Coastal Zone Study(SW)
= swmlOOd.inp
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
100 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = l pond
bottom elevation
feet
=
. 000
bottom area
acres
—
.874
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
-
.000
perm, pool infiltration rate
in/hr
:
.000000
flood pool area
acres

1.166
flood pool volume
ac-ft
-
4.079
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
-
.000
orifice discharge coefficient
-
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
—
. 000
number of holes in riser

-
. 000
hole diameter
inches
=
. 000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zueat
device acres acres %	acres ac-ft feet acres ac-ft fe
1 dry pond 100.00 60.00 60.0	.87 .00 .00 1.17 4.08 3.
24 OVERALL 100.00 60.00 60.0	.87 .00 .00 1.17 4.08 3.5C
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at	vb/at
% inches %	inches
1.46 .00 .87	.00
1.46 .00 .87	.00
device
1 dry pond
2 5 OVERALL
total-storage
ab/at vb/at
% inches
1.17	.49
1.17	.49
flood-storage
vb/at
inches
.49
.49
-------
number of storms =	1
intervaL = 476. hrs, storm duration =
device == 1 infilt b,	type = infiltr ,
flow
mass-balance term	acre-ft
01 watershed inflows	1.3 0
03	infiltrate	.77
04	exfiltrate	.77
05	filtered	.00
07	spillway outlet	.53
08	sedimen + decay	.00
12. hrs,
variable =
load
lbs
569.42
47 . 57
. 00
47. 57
113.87
407.98
precip =
tss
54 inches
cone
ppm
160.8435
22.6524
.0000
. 0000
79.2594
. 0000
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storcige increase
15	mass balance check
1.30
.53
.77
1.30
.00
. 00
. 00
569.42
113.87
. 00
113.87
455.55
. 00
. 00
160.8435
79 .2594
. 0000
32.1949
load removal efficiency = 80.00
continuity errors: volume = .10
adjusted = 80.00
load	= .00
extreme values over all storms
base minimum maximum maximum maximum
elev elev elev inflow outflow
device	ft	ft	ft	cfs	cfs
1 infilt b	.00	.00 3.00	3.75	1.74
case title	= Coastal Zone Study(SW)
case data file = swm50i.inp
storm data file = czmswst.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
maximum	wet
velocity	period
ft/sec	%
.00	17.0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
50 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 600
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve; number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	.189
storage pool area acres =	.252
storage pool volume ac-ft =	.662
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 infilt b
24 OVERALL
acres
50.00
50.00
acres
30. 00
30.00
60. 0
60. 0
acres
. 25
.25
ac-ft
. 66
. 6 6
feet
2 . 62
2 . 62
total-storage	zmean
acres ac-ft	fer4-
.25	.66	2. i
.25	.66	2 . _
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 infilt b	.84	.26	.50
25 OVERALL	.84	.26	.50
vb/at
inches
. 16
. 16
total-storage
ab/at vb/at
% inches
.50	.16
.50	.16
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 47 6. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08 sedimen + decay
storm duration =
type = pond ,
flow
acre-ft
2.61
2 .61
. 00
12. hrs, precip =
variable = tss
load	cone
lbs	ppm
1138.83	160.8435
226.71	32.0163
912.12	.0000
.54 inches
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
2
2
2
61
61
61
00
00
00
80. 09
-.01
1138 .
226,
226,
912,
83
71
71
12
00
00
adjusted =
load	=
160.8435
32.0163
32.0163
80. 09
. 00
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev elev inflow outflow velocity period
ft	ft	ft	cfs	cfs ft/sec	%
.00	.00 1.87	7.50	1.43	.00 12.4
= Coastal Zone Study(SW)
- swmlOOd.inp
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
100 acres, multi-family
ED dry pond
watershed	= l watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
72.000
. 000
1. 000
watershed area	acres
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 874
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
--
.000000
flood pool area
acres

1. 166
flood pool volume
ac-ft
-
4. 079
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
—
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet
=
.000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
. 000
number of holes in riser

-
. 000
hole diameter
inches
=
. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zraean
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 100.00 60.00 60.0	.87 .00 .00 1.17 4.08
24 OVERALL 100.00 60.00 60.0	.87 .00 .00 1.17 4.08
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.46	.00	.87	.00
25 OVERALL	1.46	.00	.87	.00
total-storage
ab/at vb/at
% inches
1.17	.49
1.17	.49
flood-storage
vb/at
inches
. 49
. 49
-------
number of storms =	1
interval = 476. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
3.47
3.47
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
load removal efficiency =
continuity errors: volume =
3.47
3 .47
3 .47
. 00
. 00
. 00
80. 10
-.01
12. hrs, precip =
.54 inches
variable = tss
load
lbs
1518 .45
302.23
1216.21
1518.45
302.23
302.23
1216.21
. 00
. 00
adjusted
load
cone
ppm
160.8435
32.0112
. 0000
160.8435
32.0112
32.0112
80.10 %
. 00 %
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev	elev inflow outflow velocity period
ft ft	ft cfs cfs ft/sec %
.00 .00	1.87 10.00 1.90 .00 12.4
= Coastal Zone Study(SW)
= swclOOd.inp
device
1 dry pond
case title
case data file
storm data file = czmswst.stm
particle file
air temp file
czm_nurp.par
prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.800
. 020
60.000
. 000
1.000
watersheo area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
1.166
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
T
.000000
flood pool area
acres
=
1.555
flood pool volume
ac-ft

5.441
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
=
.000
number of holes in riser

=
. 000
hole diameter
inches
=
. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
f e«
3 . 5
3 . bo
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 100.00 80.00 80.0 1.17 .00 .00	1.55 5.44
24 OVERALL 100.00 80.00 80.0 1.17 .00 .00	1.55 5.44
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.46 .00 1.17 .00	1.55 .65	.65
25 OVERALL 1.46 .00 1.17 .00	1.55 .65	.65
-------
number of storms =
interval = 476. hrs,
device =¦ 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
1.74
1.
1.
03
03
00
70
00
1.74
.70
1.03
1.73
.00
. 00
. 00
12. hrs, precip =
variable = tss
load
lbs
759.22
63 . 52
. 00
63 . 52
151.49
.54 inches
544 .22
759.22
151.49
. 00
151.49
607.74
. 00
. 00
cone
ppm
160.8435
22 . 6593
. 0000
. 0000
2116
0000
79
160.8435
79.2116
. 0000
32.1243
load removal efficiency = 80.05
continuity errors: volume = .10
adjusted =
load	=
80.05
. 00
extreme
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 3.00	5.00
= Coastal Zone Study(SW)
= swcSOi.inp
= czmswst.stm
= czm_nurp.par
= prov6988.tmp
maximum
outflow
cfs
2.31
maximum
velocity
ft/sec
. 00
wet
period
%
17.0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case note's:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
50 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
.800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.2 53
storage pool area acres =	.337
storage pool volume ac-ft =	.884
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(SW)
watershed areas contributing surface	runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft feet
1 infilt b 50.00 40.00 80.0	.34 .88 2.62
24 OVERALL 50.00 40.00 80.0	.34 .88 2.62
total-storage	zmean
acres ac-ft	feo1-
.34	.88	2. (
.34	.88	2.i
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 infilt b	.84	.27	.67	.21
25 OVERALL	.84	.27	.67	.21
total-storage
ab/at vb/at
% inches
.67	.21
.67	.21
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 476. hrs,
device == 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type =
pond ,
flow
acre-ft
3 . 47
3 .47
. 00
47
47
47
00
00
00
12. hrs,
variable =
load
lbs
1518.45
302.23
1216.21
precip =
tss
1518 ,
302 ,
302
1216
45
23
23
21
00
00
.54 inches
cone
PPm
160.8435
32.0112
. 0000
160.8435
32 . 0112
32.0112
load removal efficiency = 80.10 %,
continuity errors: volume = -.01 %,
adjusted =
load	=
80.10
. 00
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
1.87
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= swclOOd.inp
czmswst.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cf s
10. 00
Study(SW)
maximum
outflow
cf s
1.90
maximum
velocity
ft/sec
. 00
wet
period
%
12 . 4
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
southwest rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 800
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week = -
water quality load factor
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
1.166
permanent pool area
acres

. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres

1. 555
flood pool volume
ac-ft

5.441
flood pool infiltration rate
in/hr
—
.000000
flood pool drain time
hours
r
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient

. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
=
. 000
number of holes in riser


. 000
hole diameter
inches
-
. 000
particle removal scale factor
=:
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
f e-4-
3.
3 .
Coastal Zone Study(SW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 100.00 80.00 80.0 1.17 .00 .00	1.55 5.44
24 OVERALL 100.00 80.00 80.0 1.17 .00 .00	1.55 5.44
normalized device areas and volumes
		 dead-storage 		total-storage flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.46 .00 1.17 .00	1.55 .65	.65
25 OVERALL 1.46 .00 1.17 .00	1.55 .65	.65
-------
NORTHWEST REGION RESULTS
-------
number of storms =	1
interval = 123. hrs,	storm duration =
device = l dry pond,	type = pond ,
flow
mass-balance term	acre-ft
01 watershed inflows	.04
06 normal outlet	.04
08	sedimen + decay	.00
09	total inflow	.04
10	surface outflow	.04
12	total outflow	.04
13	total trapped	.00
14	storage increase	.00
15	mass balance check	.00
load removal efficiency = 80.01 %,
continuity errors: volume = -.01 %,
16. hrs, precip =
variable = tss
load
lbs
11.40
2 .28
9 .12
.54 inches
11.40
2.28
2
9
28
12
00
00
adjusted
load
cone
ppm
101.8991
20.3677
. 0000
101.8991
20.3677
20.3677
80.01
. 00
extreme values over all storms
base minimum maximum maximum maximum maximum
elev elev	elev inflow outflow velocity
ft ft	ft cfs cfs ft/sec
.00 .01	1.84 .10 .02 .00
= Coastal Zone Study(NW)
= nwgsld.inp
device
1 dry pond
case title
case data file
storm delta file = czmnwst.stm
particle file
air temp file
czm_nurp.par
prov6988. trap
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
1 acre, fast food/ gas station
ED dry pond
pervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
sweeping freguency	times/week
water quality load factor
1. 000
.950
. 020
60.000
. 000
1. 000
-------
device = l dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres

.012
permanent pool area
acres

. 000
permanent pool volume
ac-ft
-
. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres

.016
flood pool volume
ac-ft
-
. 057
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient

. 600
outlet weir length
feet
=
.000
weir discharge coefficient


3.300
perforated riser height
feet

. 000
number of holes in riser

-
. 000
hole diameter
inches
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each	device
total impervious dead-storage	zmean
device acres acres % acres ac-ft feet
1 dry pond 1.00 .95 95.0 .01 .00	.00
24 OVERALL 1.00 .95 95.0 .01 .00	.00
normalized device areas and volumes
	 dead-storage 		total-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at
device % inches % inches	% inches
1 dry pond 1.28 .00 1.22 .00	1.63 .68
25 OVERALL 1.28 .00 1.22 .00	1.63 .68
total-storage	zmean
acres ac-ft fee
.02 .06 3.:
.02 .06 3.5'J
flood-storage
vb/at
inches
. 68
. 68
-------
number of storms =
interval = 123. hrs,
device = 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
. 04
.02
.02
.00
.02
.00
. 04
. 02
. 02
. 04
. 00
. 00
. 00
16. hrs, precip =
variable = tss
load
lbs
11.40
.90
.00
.90
2 ; 2 8
8 .22
.54 inches
11.40
2 .28
.00
2.28
9 .12
. 00
. 00
cone
ppm
101.8991
14 .7483
. 0000
. 0000
8450
0000
44
101.8991
44.8450
. 0000
20.3945
load removal efficiency = 79.99 %, adjusted = 79.99
continuity errors: volume = .00 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.02 3.00	.10
= Coastal Zone Study(NW)
= nwgsli.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 04
maximum
velocity
ft/sec
. 00
wet
period
%
69 .1
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
1 acre, fast food/ gas station
Infiltration Basin
pervious soil
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
1. 000
.950
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.005
storage pool area acres =	.007
storage pool volume ac-ft =	.018
infiltration rate in/hr -	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b	1.00	.95 95.0	.01	.02 2.63
24 OVERALL	1.00	.95 95.0	.01	.02 2.63
total-storage zmean
acres ac-ft fee^
.01	.02 2.6
.01	.02 2.6_
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device % inches %	inches
1 infilt b .73 .23 .70	.22
25 OVERALL -73 .23 .70	.22
total-storage
ab/at vb/at
% inches
.70	.22
.70	.22
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 123. hrs,
device - 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	tota] inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 04
.04
.00
. 04
.04
. 04
. 00
. 00
. 00
16. hrs, precip =
variable = tss
load
lbs
11.40	101.8991
2.28	20.3677
9.12	.0000
.54 inches
11. 40
2 . 28
2
9
28
12
00
00
cone
ppm
101.8991
20.3677
20.3677
load removal efficiency = 80.01 %,
continuity errors: volume = -.01 %,
adjusted = 80.01
load	= .00
extreme values over
base
elev
device	ft
1 dry pond	.00
case title
case data file
all storms
minimum maximum maximum maximum maximum	wet
elev elev inflow outflow velocity period
ft	ft	cfs	cfs ft/sec	%
.01 1.84	.10	.02	.00 52.0
= Coastal Zone Study(NW)
= nwgsldi.inp
storm data file = czmnwst.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep -	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
1 acre, fast food/ gas station
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
1. 000
.950
. 020
72.000
.000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = l dry pond, type = 1 pond
bottom elevation
feet

. 000
bottom area
acres
=
.012
permanent pool area
acres
-
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres
7
.016
flood pool volume
ac-ft
-
.057
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
-
.600
outlet weir length
feet
=
. 000
weir discharge coefficient


3 .300
perforated riser height
feet
=
. 000
number of holes in riser

--
. 000
hole diameter
inches
=
. 000
particle removal scale factor
—
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage zmean
device ¦ acres acres % acres ac-ft feet	acres ac-ft fee
1 dry pond 1.00 .95 95.0 .01 .00 .00	.02 .06 3.5
24 OVERALL 1.00 .95 95.0 .01 .00 .00	.02 .06 3.5^
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.28 .00 1.22 .00	1.63 .68	.68
25 OVERALL 1.28 .00 1.22 .00	1.63 .68	.68
-------
number of storms =
interval = 12 3. hrs,
device - 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 01
. 01
. 00
. 01
.01
. 01
. 00
.00
. 00
16. hrs, precip =
.54 inches
variable = tss
load
lbs
2 .40
.48
1.92
2 .40
.48
.48
1.92
. 00
.00
cone
ppm
101.8991
20.3686
. 0000
101-8991
20.3686
20.3686
load removal efficiency =
continuity errors: volume =
80.01 %, adjusted = 80.01
.00 %, load	= .00
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
1.83
over
base
elev elev
ft	ft
.00	.04
= Coastal Zone
nwsfId.inp
czmnwst.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cf s
. 02
Study(NW)
maximum
outflow
cf s
. 00
maximum
velocity
ft/sec
. 00
wet
period
%
52.0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
1 acre, single family
ED dry pond
pervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
1. 000
. 200
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 003
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft

. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres

. 003
flood pool volume
ac-ft
:
. 012
flood pool infiltration rate
in/hr

.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
-
. 000
orifice discharge coefficient
-
- 600
outlet weir length
feet
-
. 000
weir discharge coefficient


3.300
perforated riser height
feet
--
. 000
number of holes in riser

=
. 000
hole diameter
inches

. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
total-storage zmear
acres ac-ft fee
.00	.01 3.5
.00	.01 3.50
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft	feet
1 dry pond 1.00 .20 20.0	.00 .00	.00
2 4 OVERALL 1.00 .20 20.0	.00 .00	.00
normalized device areas and volumes
device
1 dry pond
2 5 OVERALL
ab/ai
1.
1.
- dead-storage
vb/ai ab/at
% inches	%
30	.00	.26
30	.00	.26
vb/at
inches
. 00
. 00
total-storage
ab/at vb/at
% inches
.35	.15
.35	.15
flood-storage
vb/at
inches
. 15
. 15
-------
number of storms =
interval = 123. hrs,
device == 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
. 01
. 00
. 00
. 00
. 00
. 00
. 01
. 00
. 00
.01
. 00
. 00
. 00
16. hrs, precip =
variable = tss
load
lbs
2.40
. 19
. 00
. 19
.48
1.73
.54 inches
. 40
.48
, 00
.48
.92
, 00
, 00
cone
PPm
101.8991
14.8377
. 0000
. 0000
6119
0000
44
101.8991
44 . 6119
.0000
20.3870
load removal efficiency = 79.99 %, adjusted = 79.98
continuity errors: volume = .00 %, load	= -.01
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.09 3.00	.02
= Coastal Zone Study(NW)
= nwsfli.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 01
maximum
velocity
ft/sec
. 00
wet
period
%
69 .9
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
1 acre, single family
Infiltration Basin
pervious soil
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
1. 000
.200
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = l infilt b, type
= 2
inf iltr
bottom elevation feet =	.000
bottom area acres =	.001
storage pool area acres =	.001
storage pool volume ac-ft =	.004
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b	1.00	.20 20.0	.00	.00 2.63
24 OVERALL	1.00	.20 20.0	.00	.00 2.63
total-storage zmean
acres ac-ft fee
.00	.00 2.€
.00	.00 2.6j
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
.74	.23	.15
.74	.23	.15
vb/at
inches
. 05
. 05
total-storage
ab/at vb/at
% inches
.15	.05
.15	.05
flood-storage
vb/at
inches
. 00
.00
-------
number of storms =
interval = 123. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
.01
.01
. 00
. 01
. 01
.01
. 00
. 00
. 00
16. hrs, precip = .54 inches
variable = tss
load	cone
lbs	ppm
2.40	101.8991
.48	20.3686
1.92	.0000
40
48
.48
,92
, 00
, 00
101.8991
20.3686
20.3686
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = .00 %, load	= .00
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev	elev inflow outflow velocity period
ft ft	ft cfs cfs ft/sec %
.00 .04	1.83 .02 .00 .00 52.0
= Coastal Zone	Study(NW)
= nwsfldi.inp
device
1 dry pond
case title
case data file
storm data file = czmnwst.stm
particle file
air temp file
czm_nurp.par
prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
1 acre, single family
ED dry pond
impervious soil
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
1.000
.200
. 020
12. 000
. 000
1.000
watershed area	acres	=
impervious fraction	=
impervious depression storage inches	=
scs curve: number (pervious portion)	=
sweeping frequency	times/week	=
water quality load factor	-	=
-------
device = l dry pond, type = 1 pond
bottom elevation
feet
-
. 000
bottom area
acres
=
. 003
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
-
. 000
perm, pool infiltration rate
in/hr

.000000
flood pool area
acres

. 003
flood pool volume
ac-ft
:
. 012
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient

. 600
outlet weir length
feet

. 000
weir discharge coefficient

:
3 . 300
perforated riser height
feet
=-
. 000
number of holes in riser

=
. 000
hole diameter
inches
--"
. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage	zmean
device acres acres % acres ac-ft feet	acres ac-ft	fe<
1 dry pond 1.00 .20 20.0 .00 .00 .00	.00 .01	3.!
24 OVERALL 1.00 .20 20.0 .00 .00 .00	.00 .01	3.50
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at	vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 1.30 .00 .26	.00	.35 .15	.15
25 OVERALL 1.30 .00 .26	.00	.35 .15	.15
-------
number of storms =
interval = 123. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total, trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 17
. 17
. 00
. 17
. 17
. 17
. 00
. 00
. 00
load removal efficiency = 80.01
continuity errors: volume = -.01
16. hrs, precip =
variable = tss
load
lbs
48.01
9.60
38.41
.54 inches
cone
ppm
101.8991
20.3665
. 0000
48 . 01
9 . 60
9 . 60
38 . 41
. 00
. 00
adjusted = 80.01
load	= .00
101.8991
20.3665
20.3665
extreme values
device
1 dry pond
case title	=
case data file	=
storm data file	=
particle file	=
air temp file	=
all storms
minimum maximum
elev
ft
1.85
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= nwsflOd.inp
czmnwst.stm
cziri_nurp. par
prov6988.tmp
maximum
inflow
cf s
.44
Study(NW)
maximum
outflow
cf s
. 08
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.ooo
.400
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
bottom area
permanent pool area
permanent pool volume
perm, pool infiltration rate
flood pool area
flood pool volume
flood pool infiltration rate
flood pool drain time
outlet orifice diameter
orifice discharge coefficient
outlet weir length
weir discharge coefficient
perforated riser height
number of holes in riser
hole diameter
particle removal scale factor
feet
=
.000
acres

.051
acres
-
.000
ac-ft
—
. 000
in/hr
-
.000000
acres
=
. 068
ac-ft
-
.239
in/hr
=
.000000
hours

48.000
inches
-
.000

=
.600
feet
=
. 000

--
3 .300
feet
—
.000

-
.000
inches
=
. 000

=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft feet
1 dry pond 10.00 4.00 40.0	.05 .00	.00
24 OVERALL 10.00 4.00 40.0	.05 .00	.00
total-storage zme?"
acres ac-ft fe<
.07	.24 3.!
.07	.24 3.50
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
1.28	.00	.51
1.28	.00	.51
device
1 dry pond
2 5 OVERALL
vb/at
inches
. 00
. 00
total-storage
ab/at vb/at
% inches
.68	.29
.68	.29
flood-storage
vb/at
inches
.29
.29
-------
number of storms =
interval = 123. hrs,
device - l infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	grouridw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
. 17
.09
. 09
. 00
. 08
. 00
. 17
. 08
. 09
. 17
. 00
.00
. 00
16. hrs, precip =
variable = tss
load	cone
lbs	ppm
48.01	101.8991
3.79	14.7445
.00	.0000
3.79	.0000
9.60	44.8660
34.62	.0000
.54 inches
48 .01
9 . 60
. 00
9 . 60
38.41
. 00
. 00
101.8991
44.8660
. 0000
20.3826
load removal efficiency = 80.00
continuity errors: volume = .04
extreme values over all storms
base minimum maximum
elev elev elev
device	ft	ft	ft
1 infilt b	.00	.01 3.00
case title	= Coastal Zone Study(NW)
case data file = nwsflOi.inp
storm data file = czmnwst.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
adjusted = 80.00
load	= .00
maximum
inflow
cf s
.44
maximum
outflow
cf s
. 16
maximum
velocity
ft/sec
. 00
wet
period
%
69 . 1
precipitation volume factor	= 1.000
storm duration factor	= l.ooo
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, single family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = l infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	.02 2
storage pool area acres =	.029
storage pool volume ac-ft =	.077
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 10.00	4.00 40.0	.03	.08 2.63
24 OVERALL	10.00	4.00 40.0	.03	.08 2.63
total-storage zmean
acres ac-ft fei
.03	.08 2.
.03	.08 2.63
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
.73	.23	.29
.73	.23	.29
vb/at
inches
.09
.09
total-storage
ab/at vb/at
% inches
.29	.09
.29	.09
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 123. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass: balance check
storm duration =
type = pond ,
flow
acre-ft
. 17
. 17
. 00
. 17
. 17
. 17
. 00
. 00
. 00
16. hrs, precip =
variable = tss
load	cone
lbs	ppm
48.01	101.8991
9.60	20.3665
38.41	.0000
.54 inches
48.01
9 . 60
9 . 60
38.41
. 00
. 00
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.85	.44
= Coastal Zone Study(NW)
= nwsflOd.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 08
maximum
velocity
ft/sec
.00
wet
period
%
52 .0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
.400
. 020
72,000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = l dry pond,
type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 051
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
.000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 068
flood pool volume
ac-ft
=
.239
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
=
.600
outlet weir length
feet

. 000
weir discharge coefficient

-
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
.000
hole diameter
inches

.000
particle removal scale factor

1.000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zme*
device acres acres %	acres ac-ft feet acres ac-ft fe
1 dry pond 10.00 4.00 40.0	.05 .00 .00 .07	.24 3.
24 OVERALL 10.00 4.00 40.0	.05 .00 .00	.07	.24 3.f
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.28 .00 .51 .00	.68 .29	.29
25 OVERALL 1.28 .00 .51 .00	.68 .29	.29
-------
number of storms =
interval = 123. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
.26
.26
. 00
.26
. 26
.26
. 00
. 00
.00
16. hrs, precip =
variable = tss
load	cone
lbs	ppm
72.01	101.8991
14.39	20.3665
57.62	.0000
.54 inches
72 . 01
14 . 39
14 . 39
57.62
. 00
. 00
101.8991
20.3665
20.3665
load removal efficiency
continuity errors: volume =
-.01
adjusted = 80.01
load	= .00
extreme values
device
1 dry pond
case title	=
case data file	=
storm data file	=
particle file	=
air temp file	=
all storms
minimum maximum
elev
ft
1.85
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= nwmflOd.inp
czmnwst.stm
czm_nurp.par
prov6988.tmp
maximum
inflow
cf s
. 65
Study(NW)
maximum
outflow
cf s
. 12
maximum
velocity
ft/sec
.00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 600
. 020
60.000
. 000
1. 000
watershed area	acres	=
impervious fraction	=
impervious depression storage inches	=
scs curve number (pervious portion)	=
sweeping frequency	times/week	=
water qucility load factor	-	=
-------
device = l dry pond,
type = 1 pond
bottom elevation
bottom area
permanent pool area
permanent pool volume
perm, pool infiltration rate
flood pool area
flood pool volume
flood pool infiltration rate
flood pool drain time
outlet orifice diameter
orifice discharge coefficient
outlet weir length
weir discharge coefficient
perforated riser height
number of holes in riser
hole diameter
particle removal scale factor
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
acres acres	% acres ac-ft feet
10.00	6.00 60.0	.08	.00 .00
10.00	6.00 60.0	.08	.00 .00
feet
-
. 000
acres

.077
acres
-
. 000
ac-ft
=
. 000
in/hr

.000000
acres

. 102
ac-ft
- -
.358
in/hr
=
.000000
hours
=
48.000
inches
=
. 000

-
. 600
feet
-
. 000

-
3 . 300
feet
=
. 000

-
.000
inches

. 000

=
1. 000
device
1 dry pond
24 OVERALL
total-storage zmean
acres ac-ft fe<
. 10	.36 3.1
.10	.36 3.bu
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 dry pond 1.28	.00	.77
25 OVERALL	1.28	.00	.77
vb/at
inches
. 00
. 00
total-storage
ab/at vb/at
% inches
1.02	.43
1.02	.43
flood-storage
vb/at
inches
.43
.43
-------
number of storms =
1


interval = 123. hrs,
storm duration =
16. hrs, precip = .54
device = 1 infilt b,
type = infiltr ,
variable = tss


, flow
load
cone
mass-balance term
acre-ft
lbs
ppm
01 watershed inflows
.26
72 . 01
101.8991
03 infiltrate
. 14
5 . 68
14.7502
04 exfiltrate
. 14
. 00
. 0000
05 filtered
. 00
5.68
.0000
07 spillway outlet
. 12
14 .40
44.8661
08 sedimen + decay
. 00
51.93
. 0000
09 total inflow
. 26
72 .01
101.8991
10 surface outflow
. 12
14 . 40
44.8661
11 groundw outflow
. 14
. 00
. 0000
12 total outflow
.26
14 . 40
20.3871
13 total trapped
. 00
57 . 61

14 storage increase
. 00
. 00

15 mass balance check
. 00
. 00

inches
load removal efficiency = 80.00
continuity errors: volume = .06
adjusted = 80.00 %
load	= .00 %
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
device	ft	ft	ft	cfs
1 infilt b	.00	.01 3.00	.65
case title	= Coastal Zone Study(NW)
case data file = nwmflOi.inp
storm delta file = czmnwst.stm
particle file = czm_nurp.par
air temp file = prov6988.tmp
maximum
outflow
cfs
. 24
maximum
velocity
ft/sec
. 00
wet
period
%
69 . 1
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 600
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.033
storage pool area acres =	.044
storage pool volume ac-ft =	.115
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each	device
total impervious	dead-storage	zmean
device acres acres %	acres ac-ft feet
1 infilt b 10.00 6.00 60.0	.04 .12 2.63
24 OVERALL 10.00 6.00 60.0	.04 .12 2.63
total-storage	zmear
acres ac-ft fe>
.04 .12 2.
.04 .12 2 . t> j
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 infilt b	.73	.23	.44
2 5 OVERALL	.73	.23	.44
vb/at
inches
. 14
. 14
total-storage
ab/at vb/at
% inches
.44	.14
.44	.14
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	l
interval = 123. hrs,	storm duration =
device == 1 dry pond,	type = pond ,
flow
mass-balance term	acre-ft
01 watershed inflows	.26
06 normal outlet	.26
08 sedimen + decay	. 00
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
26
26
26
00
00
00
16. hrs, precip =
variable = tss
load	cone
lbs	ppm
72.01	101.8991
14.39	20.3665
57.62	-.0000
.54 inches
72 . 01
14 . 39
14 . 39
57.62
. 00
. 00
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
base minimum maximum maximum maximum maximum	wet
elev elev elev inflow outflow velocity period
ft	ft	ft	cfs	cfs ft/sec	%
.00	.00 1.85	.65	.12	.00 52.0
= Coastal Zone Study(NW)
= nwmflOd.inp
device
1 dry pond
case title
case data file
storm deita file = czmnwst.stm
particle: file
air temp file
= czm_nurp.par
= prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 600
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
. 077
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
-
. 102
flood pool volume
ac-ft
=
. 358
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
=:
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
=
.600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 .300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches
=
. 000
particle removal scale factor
=
1.000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zraean total-storage zitiear
device acres acres %	acres ac-ft feet acres ac-ft - fe
1 dry pond 10.00 6.00 60.0	.08 .00 .00 .10	.36 3.
24 OVERALL 10.00 6.00 60.0	.08 .00 .00 .10	.36 3.jv
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.28 .00 .77 .00	1.02 .43	.43
25 OVERALL 1.28 .00 .77 .00	1.02 .43	.43
-------
number of storms =
interval = 123. hrs,
device - 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
. 35
.35
. 00
.35
.35
.35
. 00
. 00
. 00
16. hrs,
variable =
load/'
lbs
9 6.01
19 .19
76.82
96.01
19. 19
19. 19
76. 82
.00
. 00
precip =
tss
101
20
54 inches
cone
ppm
. 8991
. 3665
. 0000
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
base minimum maximum	maximum	maximum	maximum	wet
elev elev elev	inflow	outflow	velocity	period
ft ft ft	cfs	cfs	ft/sec	%
.00 .00 1.85	.87	.17	.00	52.0
device
1 dry pond
case title
case data file
= Coastal Zone
= nwcmlOd.inp
Study(NW)
storm delta file = czmnwst.stm
particle; file
air temp file
czm_nurp.par
prov6988.tmp
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
.800
. 020
60.000
. 000
1. 000
watershed area	acres
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet

. 000
bottom area
acres
=
. 102
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
. 136
flood pool volume
ac-ft
=
.478
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
r
. 000
orifice discharge coefficient
=
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3 .300
perforated riser height
feet

. 000
number of holes in riser


. 000
hole diameter
inches

. 000
particle removal scale factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmear
device acres acres %	acres ac-ft feet acres ac-ft fe
1 dry pond 10.00 8.00 80.0	.10 .00 .00	.14	.48
24 OVERALL 10.00 8.00 80.0	.10 .00 .00	.14	.48
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.28 .00 1.02 .00	1.36 .57	.57
25 OVERALL 1.28 .00 1.02 .00	1.36 .57	.57
-------
number of storms =
interval = 12 3. hrs, storm
duration =
16.
hrs, precip = .54
device = 1 infilt b, type =
= infiltr ,
variable = tss

-
flow

load
cone
mass-balance term
acre-ft

lbs
ppm
01 watershed inflows
.35

96. 01
101.8991
03 infiltrate
. 19

7 . 57
14.7513
04 exfiltrate
. 19

. 00
. 0000
05 filtered
.00

7.57
.0000
07 spillway outlet
. 16

19 . 22
44.8857
08 sedimen + decay
. 00

69 . 22
.0000
09 total inflow
.35

96. 01
101.8991
10 surface outflow
. 16

19 .22
44.8857
11 groundw outflow
. 19

.00
. 0000
12 total outflow
. 35

19.22
20.4152
13 total trapped
. 00

76 . 79

14 storage increase
. 00

. 00

15 mass balance check
. 00

. 00

load removal efficiency =
79.98 %,
adjusted = 79.98
%
continuity errors: volume =
.07 %,
load
. 00
O.
o
inches
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 3.00	.87
= Coastal Zone Study(NW)
= nwcmlOi.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
.32
maximum
velocity
ft/sec
. 00
wet
period
%
69 . 1
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop -	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, commercial
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
10.000
. 800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area acres =	.044
storage pool area acres =	.058
storage pool volume ac-ft =	.153
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 infilt b 10.00 8.00 80.0	.06 .15 2.63
24 OVERALL 10.00 8.00 80.0	.06 .15 2.63
total-storage zmear
acres ac-ft fe
.06	.15 2.
.06	.15 2.63
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
.73	.23	.58
.73	.23	.58
vb/at
inches
. 18
. 18
total-storage
ab/at vb/at
% inches
.58	.18
.58	.18
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 12 3. hrs, storm duration =
device == 1 dry pond,	type = pond ,
flow
mass-balance term	acre-ft
01 watershed inflows	.35
06 normal outlet	.35
08	sedirnen + decay	.00
09	total inflow	.35
10	surface outflow	.35
12	total outflow	.35
13	total trapped	.00
14	storage increase	.00
15	mass balance check	.00
load removal efficiency = 8 0.01 %,
continuity errors: volume = -.01 %,
16. hrs, precip =
variable = tss
load	cone
lbs	ppro
96.01	101.8991
19.19	20.3665
76.82	.0000
.54 inches
96.01
19 . 19
19 . 19
76.82
. 00
. 00
101.8991
20.3665
20.3665
adjusted
load
80.01
. 00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.85	.87
= Coastal Zone Study(NW)
= NWCM10D.INP
= czmnwst.stm
- czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
. 17
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
1. 000
1. 000
3
keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
10 acres, commercial
ED dry pond
precipitation volume factor	=
storm duration factor	=
number of passes through storm file =
storm dates  start =	0,
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
10.000
. 800
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
bottom area
permanent pool area
permanent pool volume
perm, pool infiltration rate
flood pool area
flood pool volume
flood pool infiltration rate
flood pool drain time
outlet orifice diameter
orifice discharge coefficient
outlet weir length
weir discharge coefficient
perforated riser height
number of holes in riser
hole diameter
particle removal scale factor
feet
=
. 000
acres
=
. 102
acres
=
. 000
ac-ft
=
. 000
in/hr
-
.000000
acres
-
. 136
ac-ft
=
.478
in/hr
=
.000000
hours
-
48.000
inches
=
. 000

=
.600
feet
=
. 000

=
3 . 300
feet
=
. 000

-
.000
inches
=
. 000

=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 dry pond 10.00	8.00 80.0	.10	.00 .00
24 OVERALL	10.00	8.00 80.0	.10	.00 .00
total-storage	zmean
acres ac-ft	fe<
.14	.48	3 . [
.14	.48	3.bu
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 dry pond 1.28	.00 1.02
25 OVERALL	1.28	.00 1.02
vb/at
inches
. 00
. 00
total-storage
ab/at vb/at
% inches
1.36	.57
1.36	,57
flood-storage
vb/at
inches
. 57
. 57
-------
number of storms =	1
interval = 123. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
1.73
1.73
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
73
,73
,73
,00
,00
,00
load removal efficiency = 80.01 %,
continuity errors: volume = -.01 %
16. hrs, precip =
.54 inches
variable = tss
load
lbs
480.07
95.96
384.11
480.07
95.96
95.96
384.11
. 00
. 00
adjusted = 80.01
load	= .00
cone
PPm
101.8991
20.3665
. 0000
101.8991
20.3665
20.3665
extreme values
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
all storms
minimum maximum
elev
ft
1.85
over
base
elev elev
ft	ft
.00	.00
= Coastal Zone
= nwslOOd.inp
= czmnwst.stm
- czm_nurp.par
= prov6988.tmp
maximum
inflow
cf s
4.36
Study(NW)
maximum
outflow
cf s
.83
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
watershed area acres	=	100.000
impervious fraction	=	.400
impervious depression storage inches	=	.020
scs curve number (pervious portion)	=	60.000
sweeping frequency times/week	=	.000
water quality load factor -	=	1.000
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
.000
bottom area
acres
=
.512
permanent pool area
acres
=
.000
permanent pool volume
ac-ft
-
.000
perm, pool infiltration rate
in/hr
-
.000000
flood pool area
acres
=
.682
flood pool volume
ac-ft
=
2.388
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
-
.000
orifice discharge coefficient
-
.600
outlet weir length
feet
=
.000
weir discharge coefficient

—
3 .300
perforated riser height
feet

.000
number of holes in riser

—
.000
hole diameter
inches

.000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
total-storage	zmean
acres ac-ft fe.
.68 2.39 3.
.68 2.39 3.5C
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 dry pond 100.00 40.00 40.0	.51	.00 .00
24 OVERALL 100.00 40.00 40.0	.51	.00 .00
normalized device areas and volumes
	 dead-storage 		total-storage flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.28 .00 .51 .00	.68 .29	.29
25 OVERALL 1.28 .00 .51 .00	.68 .29	.29
-------
number of storms =	1
interval = 123. hrs, storm duration =
device = 1 infilt b, type = infiltr , variable = tss
16. hrs, precip =
.54 inches
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
flow
acre-ft
.87
.47
. 47
. 00
.39
. 00
.87
. 39
.47
.87
.00
. 00
.00
load
lbs
240.03
18.95
. 00
18.95
47. 99
173.09
240.03
47 .99
. 00
47.99
192.04
. 00
. 00
cone
ppm
101.8991
14.7580
. 0000
.0000
44 .8661
. 0000
101.8991
44.8661
.0000
20.3932
load removal efficiency = 80.01
continuity errors: volume = .09
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 3.00
= Coastal Zone Study(NW)
= nws50i.inp
= czmnwst.stm
= czm_nurp.par
= prov6 9 8 8.tmp
device
1 infilt b
case title
case data file
storm data file
particle1, file
air temp file
adjusted =
load =
maximum
inflow
cf s
2.18
80. 01
. 00
maximum
outflow
cf s
. 79
maximum
velocity
ft/sec
. 00
wet
period
%
69 . 1
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
50 acres, single-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
.400
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve', number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom area acres =	.110
storage pool area acres =	.14 6
storage pool volume ac-ft =	.384
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device
1 infilt b
24 OVERALL
acres
50.00
50.00
acres
20. 00
20.00
40.0
40.0
acres
. 15
. 15
ac-ft
. 38
. 38
feet
2 .63
2.63
total-storage	zmean
acres ac-ft	fei
.15	.38	2.'
.15	.38	2.oj
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 infilt b	.73	.23	.29
2 5 OVERALL	.73	.23	.29
vb/at
inches
. 09
. 09
total-storage
ab/at vb/at
% inches
.29	.09
.29	.09
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 123. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
1.73
1.73
.00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
1.73
1.73
1.73
.00
.00
.00
16. hrs, precip =
.54 inches
variable = tss
load
lbs
480.07
95.96
384.11
480.07
95.96
95.96
384.11
. 00
. 00
cone
ppm
101.8991
20.3665
. 0000
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = -.01 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.85	4.36
= Coastal Zone Study(NW)
= nwslOOd.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
.83
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	.= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
100 acres, single family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.400
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet

. 000
bottom area
acres
=
. 512
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
-
. 000
perm, pool infiltration
rate in/hr
=
.000000
flood pool area
acres
=
. 682
flood pool volume
ac-ft
=
2. 388
flood pool infiltration
rate in/hr
—
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches

. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient
=
3 .300
perforated riser height
feet
=
. 000
number of holes in riser
=
. 000
hole diameter
inches
=
. 000
particle removal scale
factor

1. 000
exfiltrate routed to device 0	OUT
normal outlet routed to device 0	OUT
spillway outlet routed to device 0	OUT
Coastal Zone Study(NW)
watershed areas contributing surface	runoff to each device
total impervious	dead-storage zmean total-storage zmear
device acres acres %	acres ac-ft feet acres ac-ft fee
1 dry pond 100.00 40.00 40.0	.51 .00 .00 .68 2.39 3.E
24 OVERALL 100.00 40.00 40.0	.51 .00 .00 .68 2.39 3 . 5l>
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches %	inches	% inches	inches
1 dry pond 1.28 .00 .51	.00	.68 .29	.29
25 OVERALL 1.28 .00 .51	.00	.68 .29	.29
-------
number of storms =	1
interval = 12 3. hrs, storm duration =
device := 1 dry pond, type = pond ,
16. hrs, precip =
variable = tss
.54 inches

flow
load
cone
mass-balance term
acre-ft
lbs
ppm
01 watershed inflows
2 . 60
720.10
101.8991
06 normal outlet
2 . 60
143.94
20.3665
08 sedimen + decay
. 00
576.16
. 0000
09 total inflow
2 . 60
720.10
101.8991
10 surface outflow
2.60
143.94
20.3665
12 total outflow
2.60
143.94
20.3665
13 total trapped
.00
576.16

14 storage increase
. 00
. 00

15 mass balance check
. 00
. 00

load removal efficiency =
80.01 %,
adjusted = 80.01
%
continuity errors: volume =
-.01 %,
load = .00
%
extreme values over all storms
base minimum maximum
elev elev
ft	ft
.00	.00
= Coastal Zone
= nwmlOOd.inp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
elev
ft
1.85
Study(NW)
maximum
inflow
cf s
6. 53
czmnwst.stm
czm_nurp.par
prov6988.tmp
maximum
outflow
cf s
1.24
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall .zone
100 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
60.000
. 000
1. 000
watershed area	acres =
impervious fraction
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
.767
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
-
1. 023
flood pool volume
ac-ft
-
3 . 581
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
-
48.000
outlet orifice diameter
inches
=
. 000
orifice discharge coefficient
-
. 600
outlet weir length
feet
=
. 000
weir discharge coefficient

=
3.300
perforated riser height
feet
=
. 000
number of holes in riser

=
. 000
hole diameter
inches
=
. 000
particle removal scale factor
-
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
zmean
fee
3 .:
3 . bu
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious dead-storage zmean	total-storage
device acres acres % acres ac-ft feet	acres ac-ft
1 dry pond 100.00 60.00 60.0 .77 .00 .00	1.02 3.58
24 OVERALL 100.00 60.00 60.0 .77 .00 .00	1.02 3.58
normalized device areas and volumes
	 dead-storage 		total-storage	flood-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at	vb/at
device % inches % inches	% inches	inches
1 dry pond 1.28 .00 .77 .00	1.02 .43	.43
25 OVERALL 1.28 .00 .77 .00	1.02 .43	.43
-------
number of storms =	l
interval = 123. hrs, storm duration =
device = 1 infilt b, type = infiltr ,
flow
acre-ft
1.30
.71
.71
.00
.59
. 00
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
1.30
.59
.71
1.30
. 00
: do
. 00
16. hrs, precip =
.54 inches
variable = tss
load
lbs
360.05
28
28
71
259
42
00
42
99
64
360.05
71.99
. 00
99
, 06
00
. 00
71
288
cone
ppm
101.8991
14.7591
.0000
. 0000
44 .8661
. 0000
101.8991
44.8661
.0000
20.3941
load removal efficiency = 80.01 %, adjusted = 80.01
continuity errors: volume = .10 %, load	= .00
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 3.00	3.27
= Coastal Zone Study(NW)
= nwm50i.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
1.19
maximum
velocity
ft/sec
. 00
wet
period
o.
o
69 . 1
precipitcition volume factor	=	1.000
storm duration factor	=	1.000
number of passes through storm	file =	3
storm dates  start =	0,	keep = 0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
50 acres, multi-family
Infiltration Basin
watershed	= 1 watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
. 600
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type =	2 infiltr
bottom elevation feet =	.000
bottom airea acres =	.164
storage pool area acres =	.219
storage pool volume ac-ft =	.576
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 30.00 60.0	.22	.58 2.63
24 OVERALL	50.00 30.00 60.0	.22	.58 2.63
total-storage zmean
acres ac-ft fee
.22	.58 2.(
.22	.58 2 . b o
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
.73	.23	.44
.73	.23	.44
vb/at
inches
. 14
. 14
total-storage
ab/at vb/at
% inches
.44	.14
.44	.14
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =	1
interval = 123. hrs, storm duration =
device = 1 dry pond, type = pond ,
flow
acre-ft
2. 60
2 . 60
. 00
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
2
2
2
60
60
60
00
00
00
16. hrs, precip =
54 inches
variable = tss
load
lbs
720.10
143.94
576.16
720.10
143.94
143.94
576.16
. 00
. 00
cone
ppm
101.8991
20.3665
. 0000
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %, adjusted
continuity errors: volume = -.01 %, load
80.01 %
. 00 %
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.85	6.53
= Coastal Zone Study(NW)
= NWM100D.INP
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
1.24
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
100 acres, multi-family
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
. 600
. 020
72.000
. 000
1. 000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = l pond
bottom elevation
bottom area
permanent pool area
permanent, pool volume
perm, pool infiltration rate
flood pool area
flood pool volume
flood pool infiltration rate
flood pool drain time
outlet orifice diameter
orifice discharge coefficient
outlet weir length
weir discharge coefficient
perforated riser height
number of holes in riser
hole diameter
particle removal scale factor
feet
-
. 000
acres
=
.767
acres

. 000
ac-ft
=
. 000
in/hr
=
.000000
acres
=
1.023
ac-ft
=
3.581
in/hr
=
.000000
hours
=
48.000
inches
=
. 000

=
.600
feet

. 000

=
3 .300
feet
=
. 000

=
. 000
inches
=
. 000


1.000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 dry pond 100.00 60.00 60.0	.77	.00 .00
24 OVERALL 100.00 60.00 60.0	.77	.00 .00
total-storage	zmea..
acres ac-ft	feet
1.02 3.58	3.5
1. 02 3 . 58	3.5
normalized device areas and volumes
	 dead-storage
ab/ai vb/ai ab/at
device	% inches	%
1 dry pond 1.28	.00	.77
2 5 OVERALL	1.2 8	.00	.77
vb/at
inches
. 00
. 00
total-storage
ab/at vb/at
% inches
1.02	.43
1.02	.43
flood-storage
vb/at
inches
.43
.43
-------
number of storms =	1
interval = 123. hrs, storm duration =
device = 1 dry pond, type = pond ,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
flow
acre-ft
3 .47
3.47
. 00
3 .47
3.47
3.47
.00
.00
.00
16. hrs, precip =
.54 inches
variable = tss
load
lbs
960.13
191.92
768.22
960.
191.
191.
768.
13
92
92
22
00
00
cone
ppm
101.8991
20.3665
. 0000
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %,
continuity errors: volume = -.01 %,
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 1.85
= Coastal Zone Study(NW)
= nwclOOd.inp
device
1 dry pond
case title
case data file
adjusted = 80.01
load	= .00
maximum
inflow
cf s
8.71
storm data file = czmnwst.stm
particle file
air temp file
= czm_nurp.par
= prov6988.tmp
maximum
outflow
cf s
1. 65
maximum
velocity
ft/sec
.00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.800
. 020
60.000
. 000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water quality load factor	-	=
-------
device = 1 dry pond, type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
1. 023
permanent pool area
acres
=
. 000
permanent pool volume
ac-ft
=
. 000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres
=
1. 364
flood pool volume
ac-ft
=
4 .775
flood pool infiltration rate
in/hr
=
.000000
flood pool drain time
hours

48.000
outlet orifice diameter
inches
—
. 000
orifice discharge coefficient

. 600
outlet weir length
feet

. 000
weir discharge coefficient

:
3 .300
perforated riser height
feet
=
.000
number of holes in riser

=
. 000
hole diameter
inches
-
. 000
particle removal scale factor

1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres . % acres ac-ft feet
1 dry pond 100.00 80.00 80.0 1.02	.00 .00
24 OVERALL 100.00 80.00 80.0 1.02	.00 .00
normalized device areas and volumes
	 dead-storage 	
ab/ai vb/ai ab/at vb/at
device	% inches	% inches
1 dry pond 1.28	.00 1.02	.00
25 OVERALL	1.28	.00 1.02	.00
total-storage
ab/at vb/at
% inches
1.36	.57
1.36	.57
total-storage zmean
acres ac-ft fei
1.36 4.78 3.
1.36 4.78 3.50
flood-storage
vb/at
inches
. 57
. 57
-------
number of storms =
interval = 123. hrs,
device == 1 infilt b,
mass-balance term
01 watershed inflows
03	infiltrate
04	exfiltrate
05	filtered
07	spillway outlet
08	sedimen + decay
09	total inflow
10	surface outflow
11	groundw. outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = infiltr ,
flow
acre-ft
1.73
.94
.94
. 00
.79
. 00
1.73
. 79
.94
1.73
. 00
. 00
. 00
16. hrs,
variable =
load
lbs
480.07
37.86
. 00
86
11
10
precip =
tss
54 inches
37.
96.
346.
480,
96 .
96
383
07
11
00
11
96
00
00
cone
ppm
101.8991
14.7580
. 0000
. 0000
8858
0000
44
101.8991
44 . 8858
.0000
20.4206
load removal efficiency = 79.98
continuity errors: volume = .10
extreme values over all storms
base minimum maximum
elev elev elev
ft	ft	ft
.00	.00 3.00
= Coastal Zone Study(NW)
= nwc50i.inp
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 infilt b
case title
case data file
storm data file
particle file
air temp file
adjusted =
load	=
79.98
.00
maximum	maximum	maximum	wet
inflow	outflow	velocity	period
cfs	cfs	ft/sec	%
4.36	1.59	.00	69.1
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
50 acres, commercial
Infiltration Basin
watershed	= l watersh
surface runoff device = 1 infilt b
percolation device = 0
50.000
.800
. 020
60.000
watershed area	acres
impervious fraction
impervious depression storage inches
scs curve number (pervious portion)
-------
sweeping frequency	times/week =	.000
water quality load factor	-	=	1.000
device = 1 infilt b, type
= 2
infiltr
bottom elevation feet =	.000
bottom area - acres =	.219
storage pool area acres =	.292
storage pool volume ac-ft =	.767
infiltration rate in/hr =	.500000
void volume % =	100.000
particle removal scale factor =	1.000
exfiltrate routed to device	0 OUT
spillway outlet routed to device	0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device	acres acres	% acres ac-ft feet
1 infilt b 50.00 40.00 80.0	.29	.77 2.62
24 OVERALL	50.00 40.00 80.0	.29	.77 2.62
total-storage	zmean
acres ac-ft	fe<
.29	.77	2.1
.29	.77	2.62
normalized device areas and volumes
device
1 infilt b
2 5 OVERALL
	 dead-storage
ab/ai vb/ai ab/at
% inches	%
.73	.23	.58
.73	.23	.58
vb/at
inches
. 18
. 18
total-storage
ab/at vb/at
% inches
.58	.18
.58	.18
flood-storage
vb/at
inches
. 00
. 00
-------
number of storms =
interval = 123. hrs,
device = 1 dry pond,
mass-balance term
01 watershed inflows
06 normal outlet
08	sedimen + decay
09	total inflow
10	surface outflow
12	total outflow
13	total trapped
14	storage increase
15	mass balance check
storm duration =
type = pond ,
flow
acre-ft
3 .47
3 .47
. 00
.47
.47
.47
. 00
. 00
.00
16. hrs, precip =
variable = tss
load	cone
lbs	ppm
960.13	101.8991
191.92	20.3665
768.22	.0000
.54 inches
960.13
191.92
191.9 2
768.22
. 00
.00
101.8991
20.3665
20.3665
load removal efficiency = 80.01 %,
continuity errors: volume = -.01 %,
adjusted = 80.01 %
load	= .00 %
extreme values over all storms
base minimum maximum maximum
elev elev elev inflow
ft	ft	ft	cfs
.00	.00 1.85	8.71
= Coastal Zone Study(NW)
= NWC100D.INP
= czmnwst.stm
= czm_nurp.par
= prov6988.tmp
device
1 dry pond
case title
case data file
storm data file
particle file
air temp file
maximum
outflow
cfs
1.65
maximum
velocity
ft/sec
. 00
wet
period
%
52 . 0
precipitation volume factor	= 1.000
storm duration factor	= 1.000
number of passes through storm file =	3
storm dates  start =	0, keep =	0, stop =	0
case notes:
Coastal zone management
one watershed
one device
one particle class = NURP 50%
northwest rainfall zone
100 acres, commercial
ED dry pond
watershed	= 1 watersh
surface runoff device = 1 dry pond
percolation device = 0
100.000
.800
. 020
72.000
.000
1.000
watershed area	acres =
impervious fraction	=
impervious depression storage inches =
scs curve number (pervious portion)	=
sweeping frequency	times/week =
water qucility load factor	-	=
-------
device = 1 dry pond,
type = 1 pond
bottom elevation
feet
=
. 000
bottom area
acres
=
1. 023
permanent pool area
acres

. 000
permanent pool volume
ac-ft
-
.000
perm, pool infiltration rate
in/hr
=
.000000
flood pool area
acres

1. 364
flood pool volume
ac-ft

4 . 775
flood pool infiltration rate
in/hr
-
.000000
flood pool drain time
hours
=
48.000
outlet orifice diameter
inches
=
.000
orifice discharge coefficient
¦
. 600
outlet weir length
feet
-
. 000
weir discharge coefficient

=
3 . 300
perforated riser height
feet
-
. 000
number of holes in riser

-
.000
hole diameter
inches
=
. 000
particle removal scale factor
=
1. 000
exfiltrate routed to device	0 OUT
normal outlet routed to device 0 OUT
spillway outlet routed to device 0 OUT
Coastal Zone Study(NW)
watershed areas contributing surface runoff to each device
total impervious	dead-storage zmean
device acres acres %	acres ac-ft feet
1 dry pond 100.00 80.00 80.0	1.02 .00 .00
24 OVERALL 100.00 80.00 80.0	1.02 .00 .00
normalized device areas and volumes
	 dead-storage 		total-storage
ab/ai vb/ai ab/at vb/at	ab/at vb/at
device % inches % inches	% inches
1 dry pond 1.28 .00 1.02 .00	1.36 .57
25 OVERALL 1.28 .00 1.02 .00	1.36 .57
total-storage zmear
acres ac-ft fe
1.36 4.78 3.
1.36 4.78 3.5C
flood-storage
vb/at
inches
. 57
. 57
-------