U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
SEVER BRIDGE RESERWIR
JUAB AND SANPEIE COUNTIES
UTAH
EPA REGION VI11
WORKING PAPER No, 857
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
SEYIER BRIDGE RESERWIR
JUAB AND SANPEE COUNTIES
UTAH
EPA REGION VIII
WORKING PAPER No, 857
WITH THE COOPERATION OF THE
UTAH STATE DIVISION OF HEALTH
AND THE
UTAH NATIONAL GUARD
NOVEMBER, 1977
-------
i
CONTENTS
Page
Foreward ii
List of Utah Study Lakes and Reservoirs 1v
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings . 8
V. Literature Reviewed ' 12
VI. Appendices 13
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ii
FOREWORD
The National Eutrophication Survey was initiated in 1972 1n
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication analysis are based on related concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [§303(e)], water
quality criteria/standards review [§303(c)], clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
-------
iii
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.'
ACKNOWLEDGEMENT
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Utah Department of Social
Services and the Utah Department of Natural Resources for pro-
fessional involvement, to the Utah National Guard for conducting
the tributary sampling phase of the Survey, and to those Utah
wastewater treatment plant operators who voluntarily provided
effluent samples and flow data.
The staffs of the Bureau of Water Quality of the Division
of Health and the Division of Wildlife Resources provided inval-
uable lake documentation and counsel during the Survey, reviewed
the preliminary reports, and provided critiques most useful in
the preparation of this Working Paper series.
Major General Maurice L. Watts, the Adjutant General of Utah,
and Project Officer Lt. Colonel T. Ray Kingston, who directed, the
volunteer efforts of the Utah National Guardsmen, are also grate-
fully acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF UTAH
NAME
Bear
Deer Creek
Echo
Fish
Flaming Gorge
Huntington
Joes Valley
Lower Bowns
Lynn
Minersville
Moon
Navajo
Newcastle
Otter Creek
Pang inch
Pelican
Pineview
Piute
Porcupine
Powel1
Pruess
Sevier Bridge
Starvation
Steinaker
Tropic
Utah
Mil lard Bay
COUNTY
Rich, UT; Bear Lake, ID
Wasatch
Summi t
Sevier
Daggett, UT;
Sweetwater, WY
Emery
Emery
Garfield
Box Elder
Beaver
Duchesne
Kane
Iron
Piute
Garfield
Uintah
Weber
Piute
Cache
Garfi.eld, Kane, San
Juan, UT; Coconino, AZ
Mi Hard
Juab, Sanpete
Duchesne
Uintah
Garfield
Utah
Box Elder
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SEVIER BRIDGE RESERVOIR
Tributary Sampling Site
X Lake Sampling Site
• Sewage Treatment Facility
Land Subject to Inundation
- //
Kfctf-
\
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SEVIER BRIDGE RESERVOIR
STORE! NO. 4920
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Sevier Bridge Reservoir is eutro-
phic. It ranked twenty-first in overall trophic quality when
the 27 Utah lakes and reservoirs sampled in 1975 were compared
using a combination of six parameters*. Twelve of the water
bodies had less median total phosphorus, 16 had less and one
had the same median dissolved orthophosphorus, 24 had less
median dissolved inorganic nitrogen, 21 had less mean chlorophyll
a_, and 20 had greater mean Secchi disc transparency. Marked
depression of dissolved oxygen with depth occurred at sampling
station ] in August (2.6 mg/1 at 15.5 meters).
Survey limnologists noted an algal bloom and submerged
macrophytes in the reservoir in May.
B. Rate-Limiting Nutrient:
The algal assay results indicate the reservoir was phosphorus
limited in May and September. The reservoir data indicate phos-
phorus limitation at all sampling times,
C. Nutrient Controllability:
1. Point sources—The two known point sources collectively
contributed an estimated 8.6% of the total phosphorus load to
the reservoir during the sampling year.
* See Appendix A.
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2
The phosphorus loading of 0.75 g/m2 measured during the
sampling year is nearly twice that proposed by Vollenweider
(Vollenweider and Dillon, 1974) as a eutrophic loading (see
page 11). While even complete removal of phosphorus at the
two point sources would still leave a loading of 0.68 g/m2/yr,
the reservoir is phosphorus-limited, and it is likely that
a high degree of phosphorus control would result in some im-
provement in the trophic condition of the reservoir.
2. Non-point sources--Non-point sources, including precipi-
tation contributed a little over 91% of the total phosphorus
load during the sampling year. The Sevier River added 86.2%,
and the ungaged minor tributaries and immediate drainage
contributed an estimated 2.8%.
The phosphorus export rate of the Sevier River was a rather
low 2 kg/km2 during the sampling year (page 10).
-------
II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
ii
A. Morphometry :
1. Surface area: 44.52 kilometers2.
2. Mean depth: 6.5 meters.
3. Maximum depth: 22.6 meters.
4, Volume: 291.104 x JO6 m3.
5. Mean hydraulic retention time: 1.6 years (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (Ion2)* (m3/sec)*
Sevier River 12,742.8 5.720
Minor tributaries &
immediate drainage - 473.5 0.203
Totals 13,216.3 5.923
2. Outlet -
Sevier River 13,260.8** 5.610**
C. Precipitation***:
1. Year of sampling: 24.7 centimeters.
2. Mean annual: 26.2 centimeters.
t Table of metric conversions—Appendix B.
tt Sudweeks, 1975.
* For limits of accuracy., see Working Paper No. 175, "... Survey Methods,
1973-1976".
** Includes area of reservoir; lesser outflow due to evaporation.
*** See Working Paper No. 175.
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4
III. WATER QUALTIY SUMMARY
Sevier Bridge Reservoir was sampled three times during the open-water
season of 1975 by means of a pontoon-equipped Huey helicopter. Each
time, samples for physical and chemical parameters were collected from
a number of depths at three of the four stations on the reservoir (see
map, page v). During each visit, a single depth-integrated (4.6 m or
near bottom to surface) sample was composited from the stations for
phytoplankton identification and enumeration; and during the first and
last visits, a single 18.9-liter depth-integrated sample was composited
for algal assays. Also each time, a depth-integrated sample was collected
from each of the stations for chlorophyll a_ analysis. The maximum
depths sampled were 18.6 meters at station 1, 11.9 meters at station 2,
3.4 meters at station 3, and 2.1 meters at station 4.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
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A. SUMMARY OF PHYSICAL AND CHEMICAL CHARACTERISTICS FOR SEVIER BRIDGE RESERVOIR
STORET CODE 4920
PARAMETER
TEMP
-------
B. Biological characteristics:
1. Phytoplankton -
Sampli ng
Date
05/12/75
08/12/75
09/24/75
2. Chlorophyll a_ -
Sampling
Date
05/12/75
08/12/75
09/24/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Elakatothrix sp.
Synedra sp_.
Chroomonas sp_.
Cryptomonas sp_.
Diatoma sp.
Other genera
Total
Crucigenia sp.
Oocystis sp.
Cryptomonas sp.
Aphanizomenon sp.
Fragilaria sp_.
Other genera
Total
Cyclotella sp.
Nitzschia sp.
Tetra strum sp.
Cryptomonas sp.
Skeletonema sj).
Other genera
Total
Station
Number
1
2
3
4
1
2
3
4
1
2
3
4
Algal Units
per ml
1,191
496
347
248
149
100
2,531
5,725
937
386
331
331
331
1.268
3,584
Chlorophyll a
(ug/D
3.1
17.2
2.1
2.0
5.4
54.1
3.8
4.9
71.4
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C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
a. May sample -
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
b. September sample -
Ortho P
Inorganic N Maximum yield
Cone, (rng/1) Cone, (mg/1) (mg/1-dry wt.)
0.004
0.054
0.054
0.004
0.562
0.562
1.562
1.562
0.4
14.3
18.2
0.3
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Inorganic N Maximum yield
Cone, (mg/1) Cone, (mg/1) (mg/1-dry wt.)
0.010
0.060
0.060
0.010
0.680
0.680
1.680
1.680
0.4
11.5
15.2
0.4
3. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of Sevier Bridge Reservoir was moderate at the times the
samples were collected (05/12/75 and 09/24/75). Also, the
significant increases in yield with the addition of phos-
phorus alone in both assays indicates the reservoir was
phosphorus limited at those times.
The reservoir data also indicate phosphorus limitation;
i.e., the mean inorganic nitrogen/orthophosphorus ratios
were 44/1 or greater each sampling time.
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IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Utah National Guard
collected monthly near-surface grab samples when possible from each of
the tributary sites indicated on the map (page v), except for the high
runoff months of May and June when two samples were collected. Sam-
pling was begun in November, 1974, and was completed in October, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by the
Utah District Office of the U.S. Geological Survey for the tributary
sites nearest the reservoir.
In this report, nutrient loads for sampled tributaries were deter-
mined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads shown are
those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate drain-
age" ("ZZ" of U.S.G.S.) were estimated using the nutrient loads, in
kg/km2/year, at station A-2 and multiplying by the ZZ area in km2.
The operator of the Gunnison collection system provided only three
monthly effluent samples and corresponding flow data; therefore, the
nutrient loads in the untreated wastes were estimated at 1.587 kg P and
4.263 kg N/capita/year for the six months of discharge during the samp-
ling year (a non-overflow pond became operational in April, 1975).
The operator of the Salina plant did not participate; nutrient loads
from this source were estimated at 1.134 kg P and 3.401 kg N/capita/year,
and flows were estimated at 0.3785 m3/capita/day
See Working Paper No. 175.
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A. Waste Sources:
1. Known municipal* -
Name
Pop.
Served
Treatment
Mean Flow
(ma/d)
none (for 442.8
six months)
tr. filter 565.5
Gunnison 1,500
Salina** 1,494
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
Source
kg P/
yr
a. Tributaries (non-point load) -
Sevier River 28,810
b. Minor tributaries & immediate
drainage (non-point load) -
c. Known municipal STP's -
Gunnison
Salina
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation*** -
Total
2. Outputs -
Reservoir outlet - Sevier River
945
1,190
1,695
780
33,420
4,035
3. Net annual P accumulation - 29,385 kg.
* Hinshaw, 1974.
** Anonymous, 1971; population shown is 1970 Census.
*** See Working Paper No. 175.
Receiving
Water
San Pitch River
Sevier River
% of
total
86.2
2.8
3.6
5.1
2.3
100.0
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Sevier River 661,185 89.1
b. Minor tributaries & immediate
drainage (non-point load) - 24,620 3.3
c. Known municipal STP's -
Gunnison 3,195 0.4
Salina 5,080 0.7
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 48,065 6.5
Total 742,145 100.0
2. Outputs -
Reservoir outlet - Sevier River 258,715
3. Net annual N accumulation - 483,430 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Sevier River 2 52
* See Working Paper No. 175.
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11
E. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Essentially, his "dangerous" loading is
one at which the receiving water would become eutrophic or
remain eutrophic; his "permissible" loading is that which
would result in the receiving water remaining oligotrophic
or becoming oligotrophic if morphometry permitted. A rneso-
trophic loading would be considered one between "dangerous"
and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/m2/yr 0.75 0.66 16.7 10.9
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Sevier Bridge Reservoir:
"Dangerous" (eutrophic loading) 0.40
"Permissible" (oligotrophic loading) 0.20
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12
V. LITERATURE REVIEWED
Anonymous, 1971. Inventory of municipal waste facilities. EPA
Publ. OWP-1, vol. 8, Wash., DC.
Hinshaw, R., 1974. Treatment plant questionnaire. UT Bur. of
Env. Health, Salt Lake City.
Sudweeks, Calvin K., 1975. Personal communication (reservoir
morphometry). UT Bur. of Env. Health, Salt Lake City.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
-------
LAKE OAtft TO BE WSEO
LAKE
CODE LAKE NAME
RANKINGS
0*08 LAKE POWELL
4901 BEAR LAKE
4902 LOWER aowN'S RESERVOIR
4903 DEER CREEK RESERVOIR
4984 ECHO RESERVOIR
4905 LYNN RESERVOIR
4906 FISH LAKE
4997 HUNTJNGTON NORTH B£S£ftV@
4908 JOE'S VALLEY RESERVOIR
4999 HINERSVILLE RESERVOIR
4910 MOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PANAUITCH LAKE
4919 PELICAN LAKE
4916 PlNEVIEM MESERVOIR
4917 P1UTE RESERVOIR
4918 PORCUPINE RESERVOIR
4919 PRUESS RESERVOIR
-------
PERCENT OP LAKES MtfH HI6HESJ VALUES (NUMBER Of LAKES Hg?H HISHfcR VALU£St
LAKt
CODE LAKE NAME
0408 LAKE POUELL
4901 BEAR LAKE
4902 LOWER BONN'S RESERVOIR
4903 DEER CREEK RESERVOIR
<»9o« ECHO RESERVOIR
49os LYNN RESERVOIR
4906 FISH LAKE
4907 HUNTINGTON NORTH RESERVO
4900 JOE'S VALLEY RESERVOIR
4909 MtNERSVILLE RESERVOIR
4910 MOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PANtUITCH LAKE
4915 PELICAN LAKE
4*16 PINEVIEM RESERVOIR
4917 PIUTE RESERVOIR
4918 PORCUPINE RESERVOIR
4919 PHUESS RESERVOIR (OARRiS
4928 SEVIER BRIDGE RESERVOIR
*92l STARVATION RESERVOIR
4922 STEINAKER RESERVOIR
4923 TROPIC RESERVOIR
4924 UTAH LAKE
4923 MILLARO BAT RESERVOIR
5605 FtAMJNG GORGE RESERVOIR
KtStfM
TOTAL P
96 <
90 (
46 1
42 «
31 «
8 i
62 <
n «
ai «
e «
100 1
69 i
23 1
IS I
12 <
S» 1
90 I
27 1
58 1
19 «
54 1
n t
85 1
65 1
4 1
3T 1
90 (
£51
231
121
HI
a>
2S
161
201
211
01
261
i*)
61
4)
31
VI
131
71
15)
S)
141
191
22)
17)
1)
9)
231
MEDIAN
INORO t*
4 (
67 «
87 (
S9 (
27 «
23 <
65 «
65 1
58 (
44 5
67 «
B7 1
87 1
87 i
65 (
94 1
IS I
31 (
38 1
35 1
B (
87 t
87 t
50 I
12 1
44 4
0 1
It
191
19)
S9
79
61
168
16!
SS9
lit
19)
19)
199
19)
16)
14)
*•
8)
10)
9t
21
19)
19)
13)
3)
It)
0)
SCO-
MEAN see
81 « 21)
96 « 255
85 i 22)
42 1 IS)
19 « 51
58 < iSJ
ieo « 26)
69 t IB)
62 i 16)
27 i 7i
73 ( 19B
77 1 20)
46 ( 12)
IS ( 4)
50 ( 13)
St « •)
31 8 181
8 ( 2i
31 1 8)
0 t 0)
23 ( 6)
65 ( 17)
8* 1 23)
54 1 14)
4 1 1)
12 1 3)
92 C 24)
MEAN
CHLCRA
73
100
65
3S
50
3
23
92
as
12
77
88
g?
31
4
•4
sa
as
39
69
19
62
96
46
•
42
91
• 191
( 26)
1 17)
« 9)
t 131
t 21
i 6)
1 249
3 22)
! 3)
( 20)
I 23)
< 7)
1 8)
I 1)
1 14)
« i5i
( 4)
1 10)
« 18)
1 5)
( 16)
1 25)
I 12)
1 0)
< ID
1 21)
Is"
MJK 00
IS <
77 (
73 1
0 8
12 i
62 i
62 «
96 (
46 «
BS «
69 1
900 (
19 9
54 I
8 <
91 «
4 8
38 i
33 1
81 (
33 1
23 1
27 (
90 (
<*2 1
SO (
62 1
4)
20)
19)
0)
3)
ise
IS)
25)
42)
221
IB)
26)
5)
14)
2)
19)
i;
10)
8)
21)
8)
6)
7)
23)
ID
13)
15)
MEDIAN
OISS ORTHO ?
42 <
90 (
SO I
58 (
13 i
fy 5
79 «
69 (
96 «
a <
100 1
85. «
27 «
B (
23 1
73 1
56 i
46 t
19 1
37 1
37 1
T9 I
65 (
58 I
13 1
31 <
90 I
11)
23)
13)
14>
3t
1)
20 1
181
23)
0)
26?
22)
7S
2)
.6)
l*t
j*5
12S
Si
9)
«)
20)
17)
14)
3)
8)
231
INDEX
NO
3ii
540
406
196
H2
B63
3*1
468
426
168
506
506
229
210
162
J4J
in
163
217
24|
174
389
448
36)
75
216
4(5
-------
i,AKES RANXE6 8V INDEX NOS.
RANK LAXE CODE LAKE NAME INDEX NO
1 4901 BEAR LAKE 5*8
3 4911 NAVAJ3 LAKE 506
3 4910 MOON LAKE 506
4 4907 HUNTIN6TON NORTH RESERVC 468
S 4922 STEINAKER RESERVOIR 448
6 4908 JOE'S VALLEY RESERVOIR 426
7 5605 FLAMING GORGE RESERVOIR 415
8 4903 LOWER (JOHN'S RESERVOIR 406
9 4906 FISH LAKE 391
10 4921 STARVATION RESERVOIR 389
11 4923 TROPIC RESERVOIR 363
12 4915 PELICAN LAKE 343
13 040S LAKE POWELL 311
14 4919 PRUESS RESERVOIR IGARBIS 241
\<3 4912 NEWCASTLE RESERVOIR 229
16 4916 (MNtVtKW NftkCNVOI* tf>
IT 4918 PORCUPINE ftCttWOIft SIT
18 4925 M1LLARD BAV RESERVOIR 216
19 4913 OTTER CREEK RESERVOIR 210
20 4903 DEER CREEK RESERVOIR 196
21 4920 SEVIER BRIDGE RESERVOIR 174
22 4909 MINCRSVILLE RESERVOIR us
23 4917 PIUTE RESERVOIR 165
24 4905 LYNN RESERVOIR 163
25 4914 PANQUITCH LAKE 162
26 4904 ECHO RCStHVOIR 152
27 4924 UTAH LAKE 75
-------
APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
-4
Cubic meters x 8.107 x 10 « acre/feet
Square kilometers x 0.3861 - square miles
Cubic meters/sec x 35.315 « cubic feet/sec
Centimeters x 0.3937 » Inches
•
<
Kilograms x 2.205 * pounds
Kilograms/square kilometer x 5.711 - Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
LAKE CODE 4920
TRIBUTARY FLOW INFORMATION FOR UTAH
SEVIER BRIDGE RES
10/18/76
TOTAL DRAINAGE AREA OF LAKE(SO KM) 13260.8
SUB-DRAINAGE
TRIBUTARY AREA(SO KM)
4920A1
4920A2
4920ZZ
13260.8
12742.8
518.0
JAN
0.20
6.51
0.170
FEB
0.25
8.21
0.170
MAR
1.39
8.50
0.142
APR
5.38
6.51
0.311
MAY
19.54
7.65
0.481
NORMALIZED FLOWS(CMS)
JUN JUL AUG
13.31
7.36
0.340
13.88
2.15
0.170
8.21
2.41
0.142
SEP
3.54
3.11
0.113
OCT
0.42
4.53
0.085
NOV
0.57
5.66
0.142
DEC
MEAN
0.17 5.61
6.23 5.72
0.170 0.203
SUMMARY
13260.8
13260.8
TOTAL DRAINAGE AREA OF LAKE
SUM OF SUB-DRAINAGE AREAS
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY
4920A1
TOTAL FLOW IN
TOTAL FLOW OUT
71.27
66.86
4920A2
4920ZZ
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
74
74
75
75
75
75
75
75
75
75
75
75
74
74
75
75
75
75
75
75
75
75
75
75
74
74
75
75
75
75
75
75
75
75
75
75
0.082
0.153
0.224
0.246
0.232
0.997
12.403
16.141
20.813
14.272
7.079
0.102
S.578
6.116
5.947
6.796
6.994
4.219
7.674
15.461
3.879
2.464
3.993
4.842
0.170
0.198
0.198
0.198
0.198
0.340
0.566
0.425
0.198
0.170
0.142
0.113
9
14
11
8
8
5
3
7
12
10
16
11
9
14
11
a
8
.5
3
7
12
10
16
5
FLOW DAY
FLOW
0.059
0.153
0.229
0.272
0.269
0.210
21.889
24.437
24.437
19.312
5.522
0.122
5.409
6.116
5.663
6.654
6.853
7.023
4.729
15.829
5.012
2.775
3.002
4.417
18
22
18
22
20.331
9.260
7.674
17.302
-------
APPtNUIX D
PHYSICAL and CHEMICAL DATA
-------
STORE? RETRIEVAL DATE
DATE
FROM
TO
75/05/12
75/03/12
75/09/24
TIME
or
DAY
I® 50
10 5©
10 50
10 50
10 50
10 ?0
08 00
08 00
08 00
08 00
13 55
13 55
13 55
13 5S
13 55
DEPTH
FEET
0000
0005
0015
0025
0040
0061
0000
0005
0025
0051
0000
C005
0015
0030
0049
00010
BATER
TEMP
CENT
9.6
9.3
9.2
9.2
9.1
7.3
18eS
16. 6
18.6
15.9
19.6
19.5
18.9
18.7
18.6
DO
MG/L
9,6
986
9.6
9.6
7.0
7.0
6.2
2.6
7.2
7.2
6.2
6.6
6.4
4920©!
39 22 200© U2 91 45.6 ;
SEVIER BRIDGE RESERVOIR
49039 UTAH
150891
00677
TRftNSP
SECCHl
INCHES
11*
60
60
00094
CNDUCTVV
FIELD
M1CWOMKO
154U
1530
1530
1523
1521
1460
2197
2200
2197
2097
1895
1885
1859
1846
1842
11EPAL
• ©065
0043©
PH
SU
8»60
8.60
8.60
8.60
8o60
8.55
8.40
8.45
8.40
8. IS
8.55
8.60
8.50
8.60
8.50
.ES
FEET 0!
C0*10
T ALK
CAC03
MG/L
405
382
362
316
324
352
336
342
368
376
425
395
450
440
425
2111202
DEPTH CLASS 00
C0*10
T ALK
CAC03
MG/L
405
382
362
316
324
352
336
342
368
376
425
395
450
440
425
08610
NH3-N
TOTAL
MG/L
O.C40
0.040
0.039
0.040
0.030
0.030
0.040
0.040
0.020K
0.020
0.100
0.080
0.120
0.090
O.J10
60625
TOT KJEL
N
MG/L
OoSOC
08700
0.700
0.700
0.400
0.500
OeSOO
0.800
8,500
0.500
0.800
0.700
0.700
0.80C
0.600
00630
K02&N03
W-TOTAL
MG/L
GS6C8
0.600
0.600
0.610
0.600
0.590
0.290
0.290
0.290
0.430
0.190
0.190
0.190
0.180
0.190
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.008
3.006
0.005
0.018
0.013
0.005
0.006
0.004
0.010
0.004
0.003
0.004
0.005
0.010
K VALUE KNOHN TO Bt
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/08/12
492001
39 22 20.0 112 01 45.0 3
SEVIER BRIDGE RESERVOIR
49939 UTAH
150891
11EPALES
0065 FEET
2111S02
DEPTH CLASS 00
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
75/05/12
75/08/12
75/09/24
10
10
10
10
10
10
08
08
08
08
13
13
13
13
13
50
50
50
50
50
50
00
00
00
00
55
55
55
55
55
0000
ocos
0015
0025
0040
0061
0000
0005
0025
0051
0000
0005
0015
0030
0049
0
0
0
0
0
0
0
0
0
c
0
0
0
0
0
.022
• 021
.020
.024
.019
.023
.023
.022
.024
.032
.031
.022
.023
.022
.022
32217
CMLRPHYL
A
JG/L
3.1
2.0
J.b
00031
INGOT LT
REWNING
PERCENT
-------
STORET RETRIEVAL DATE 76/Ofl/'12
DATE
FROM
TO
75/05/12
75/08/12
75/09/24
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
10
10
10
10
08
08
08
08
13
13
13
13
45
45
45
45
?0
70
?0
20
35
35
35
35
0000
0005
0015
0035
0000
0005
0015
0039
0000
0005
0015
0035
CENT
10
9
9
9
18
19
19
18
19
18
18
18
.2
.3
.7
.4
.6
.1
.0
.1
.0
.a
.4
.1
492002
39 22 31.0 111 59 09.0 3
SEVIER BRIDGE RESERVOIR
49023 UTAH
150891
11EPALES
2111202
0039 FEET DEPTH CLASS
00300
DO
MG/L
8.6
9.4
9.0
9.2
7.0
6.4
5.8
4.6
7.0
6.8
7.0
7.2
00077
TRANSP
SECCHI
INCHES
74
48
60
00094
CNOUCTVY
FIELD
MICHOMHO
2181
2143
2154
2147
2200
2203
2200
2167
1857
1868
1886
1874
00400
PH
su
8.40
8.40
8.45
8.50
8.40
8.50
8.40
8.35
8.50
8.50
8.50
8.55
00410
T ALK
CACO3
MG/L
350
356
366
332
354
346
370
352
435
465
405
430
00610
NH3-N
TOTAL
MG/L
0.040
0.030
0.030
0.030
0.080
0.080
0.080
0.060
0.080
0.090
0.130
0.110
00
00625
TOT KJEL
N
MG/L
0.700
0.400
0.400
0.500
0.600
0.600
0.600
0.600
0.800
0.800
0.800
0.800
00630
N02&N03
N-TOTAL
MG/L
0.600
0.610
0.610
0.610
0.270
0.270
0.280
0.330
0.200
0.200
0.220
0.220
00671
PHOS-OIS
OUT HO
MG/L P
0.017
0.020
0.020
0.016
0.006
0.005
0.007
0.015
0.005
0.004
0.004
0.005
-------
STORE! RETRIEVAL DATE 76/08/12
00665 3221?
DATE TIME' DEPTH PKOS-TOT CHLRPHYL
FROM OF A
TO OAY FEET MG/L *> UG/L
75/05/12 10 45 0000 0.026 17.2
10 45 0005 0.023
10 45 0015 0.024
10 45 0035 0.026
75/08/12 08 23 0000 0.031 5.4
08 ?0 0005 0.030
08 20 0015 0.032
08 20 0039 0.036
75/09/24 13 35 0000 0.026 4.9
13 35 0005 0.027
13 35 0015 0.029
13 35 0035 0.032
492092
39 22 31.0 111 59 09.0 3
SEvIER BRIOGE RESERVOIR
49023 UTAH
150891
11EPAS.ES
0039 FEET
2111202
DEPTH CLASS 00
00031
INCDT LT
REMNING
PERCENT
-------
STORET RETRIEVAL DATE 76/08/12
DATE
FROM
ro
75/95/12
75/08/12
TIM£ DEPTH
OF
DAY FEET
11 15 0000
11 15 0005
11 15 0011
08 40 0000
08 40 0003
00010
WATER
TEMP
CENT
12.2
11.7
11.4
19.0
19.1
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
9.4
9.5
9.2
7.0
6.2
21
2147
2165
2134
2730
2729
492003
39 18 08.0 111 54 59.0 3
SEVIER BRIDGE RESERVOIR
49023 UTAH
150892
11EPALES
2111202
0015 FEET DEPTH CLASS
00400
PH
SU
8.65
8.65
8.70
8.50
8.50
00410
T ALK
CAC03
MG/L
360
316
308
370
406
00610
NM3-N
TOTAL
MG/L
0.030
0.050
0.050
0.060
0.080
00
00625
TOT KJEL
N
MG/L
0.800
0.800
0.700
0.700
1.100
00630
N02&N03
N-TOTAL
MG/L
0.310
0.310
0.310
0.270
0.270
00671
PHOS-OIS
ORTHO
MG/L P
0.015
0.015
0.012
0.010
0.013
-------
STORET RETRIEVAL DATE 76/08/12
492003
39 18 08.0 111 54 59.0 3
SEVIER BRIDGE RESERVOIR
49023 UTAH
150892
11EPALES 2111202
0015 FEET DEPTH CLASS 00
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO OAY FEET MG/L P
75/05/12 11 15 0000 0.057
11 15 0005 0.062
11 15 0011 0.065
75/08/12 08 40 0000 0.033
08 40 0003 0.129
32217 00031
CHLRPHYL INCOT LT
A HEMMING
DG/L PEKCENT
2.1
54.1
-------
STORET RETRIEVAL DATE 76/08/12
492004
39 20 01.0 112 56 36.0 3
SEVItW BRIDGE RESERVOIR
49023 UTAH
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/09/24 13 00 0000
13 00 0007
00010 00300 00077
WATER DO TRANSP C
TEMP SECCHI FIELD
CENT MG/L INCHES f
16.4 9.6 9
16.3 9.6
11EPALES 760114 2111202
0009 FEET DEPTH CLASS 00
094
CTVY
0
OMriO
1809
1852
00400
PH
SU
8.30
8.30
00410
T ALK
CAC03
MG/L
435
430
00610
NH3-N
TOTAL
MG/L
0.030
0.040
00625
TOT KJEL
N
MG/L
1.400
1.600
00630
N02&N03
N-TOTAL
MG/L
0.980
1.210
00671
PHOS-DIS
ORTHO
MG/L P
0.008
0.010
-------
STORET RETRIEVAL DATE 7fa/03/i2
492004
39 20 01.0 112 56 36.0 3
SEVIER BRIDGE RESERVOIR
49023 UTAH
11EPALES 760114 2111202
0009 FEET DEPTH CLASS 00
00665 32217 00031
DATE TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
FROM OF A SEMNIMG
TO DAY FEET MG/L P UG/L PERCENT
75/09/24 13 00 0000 0.090 71.4
13 00 0007 0.088
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/09
74/12/14
75/01/11
75/02/08
75/03/08
75/04/05
75/05/03
75/05/18
75/06/07
75/06/22
75/07/12
75/08/10
75/09/16
75/10/11
12 00
10 30
10 00
09 00
10 10
10 00
10 00
11 52
11 55
11 30
12 1C
10 10
09 35
15 20
4920A1
39 22 27.0 112 02 20.0 4
SEVIER RIVER
49 IS SCIPIO
0/SEVIER BRIDGE RES 150891
GAGE STATN .5 MI OMNSTRM FRM YUBA 0AM
11E»ALES 2111204
0000 FEET DEPTH CLASS 00
10630
I&N03
OTAL
IG/L
0.096
0.080
0.128
0.376
0.376
0.430
0.520
0.540
0.480
0.370
0.250
0.290
0.170
0.085
00625
TOT KJEL
N
MG/L
0.600
1.300
1.300
1.500
0.700
1.150
0.600
1.650
1.500
0.650
0.250
1.250
1.300
0.600
00610
NH3-N
TOTAL
MG/L
0.017
0.040
0.030
0.048
0.028
0.060
0.020
0.040
0.100
0.055
0.070
0.045
0.145
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.035
0.005
0.005K
0.016
0.008K
0.010
0.005
0.010
0.010
0.005
0.005K
3.015
0.015
0.010
00665
PHOS-TOT
MG/L P
0,040
0.020
0*020
0.020
0.010
0.020
0.020
0.010
0.040
0.020
0.040
0.020
0.030
0.040
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO UAY FEET
74/11/09
74/12/14
75/01/11
75/02/08
75/03/08
75/04/05
75/05/03
75/05/18
75/06/07
75/06/22
75/07/12
75/08/10
75/09/16
75/10/05
13 30
11 40
11 45
10 00
11 00
11 00
10 45
10 45
10 15
10 20
11 30
09 00
08 40
21 00
4920A2
39 12 32.0 111 51 32.0 4
SEVIER RIVER
49 7.5 GUNNISON
T/SEVIER BRIDGE RES 150891
BNK 40 FT FRM ORT RO 1.5 M SSW FAYETTE
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'&N03
OTAL
IG/L
2.600
2.640
3.120
2.500
2.130
1.500
2.500
1.570
0.980
0.920
2.500
2.900
3.100
3.000
00625
TOT KJEL
N
MG/L
0.500
1.500
1.200
2.600
1.550
1.400
1.000
1.450
2.400
1.400
0.900
1.100
1.900
0.800
00610
NH3-N
TOTAL
MG/L
0.025
0.070
0.040
0.056
0.040
0.065
0.030
0.025
0.340
0.035
0.106
0.020
0.050
0.085
00671
PHOS-DIS
ORTHO
MG/L P
0.045
0.035
0.030
0.032
0.032
0.015
0.025
0.035
0*030
0.025
0.030
0.015
0.025
0.035
00665
PHOS-TOT
MG/L P
0.045
0.190
0.150
0.170
0.180
0.110
0.140
0.310
0.200
0.160
0.250
0.100
-------
STORET RETRIEVAL DATE 76/08/12
OATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
75/01/8? 15 15
75/03/19 11 45
75/03/18 12 00
4920AA N04920AA P001SOO
39 09 00.0 111 50 00.0 4
GUNNISON
49 7.5 GUNNISON
T/SEVIER BRIDGE RES. 150891
SEVIER RIVER
HEPALES 2141204
0000 FEET DEPTH CLASS 00
0630
!«.N03
OTAL
IG/L
2.320
0.062
0.060
00625
TOT KJEL
N
MG/L
l.OOOK
29.000
12.000
00610 00671 00665 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO «ATE FLOK-MGD
MG/L MG/L P MG/L P INST MOD MONTHLY
0.050K
8.700
4.600
0.050K
2.450
2.300
0.100K
4.400
3.300
0.120
0.120
0.120
K VALUE KNOW^ TO BE
LESS 1HAN INDICATED
------- |