U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
BOULDER LAKE
SUBLETS COUNTY
WYOMING
EPA REGION VIII
WORKING PAPER No,
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
BOULDER LAKE
SUBLETTE COUNTY
WYOMING
EPA REGION VIII
WORKING PAPER No, 882
WITH THE COOPERATION OF THE
WYOMING DEPARTMENT OF ENVIRONMENTAL QUALITY
AND THE
WYOMING NATIONAL GUARD
JULY, 1977
-------
1
CONTENTS
Page
Foreword ii
List of Wyoming Lakes and Reservoirs iv
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
-------
1i
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
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.
-------
m
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
freshwater 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.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection .Agency)
expresses sincere appreciation to the Wyoming Department of Environ-
mental Quality for professional involvement, to the Wyoming National
Guard for conducting the tributary sampling phase of the Survey,
and to those Wyoming wastewater treatment plant operators who
voluntarily provided effluent samples.
The staff of the Water Quality Division provided invaluable
lake documentation and counsel during the Survey, reviewed the
preliminary reports, and provided critiques most useful in the
preparation of this Working Paper series.
Brigadier General James L. Spence, The Adjutant General of
Wyoming, and Project Officer Colonel Donald L. Boyer, who directed
the volunteer efforts of the Wyoming National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
-------
IV
NAME
Big Sandy
Boulder
Boysen
De Smet
Flaming Gorge
Fremont
Glendo
Keyhol e
Ocean
Seminoe
Soda
Viva Naughton
Woodruff Narrows
Yellowtail
NATIONAL EUTROPHICATION SURVEY
STUDY RESERVOIRS
State of Wyoming
COUNTY
Sublette, Sweetwater
Sublette
Fremont
Johnson
Sweetwater, WY; Daggett, UT
Sublette
Converse, Platte
Crook
Fremont
Carbon
Sublette
Lincoln
Uinta
Bighorn, WY; Bighorn,
Carbon, MT
-------
•43'00'
x-
0
L_
0
BOULDER LAKE
e«.
Boulder
Creek
A2
r'
Divide
Lake
\Raid
Lake
10940
109*30'
1O920
-------
BOULDER LAKE
STORE! NO. 5602
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate Boulder Lake is oligotrophic. It
ranked first in overall trophic quality when the 14 Wyoming
lakes and reservoirs sampled in 1975 were compared using a
combination of six parameters*. One of the water bodies had
less median total phosphorus, none had less and one had the
same median dissolved orthophosphorus, none had less and four
had the same median inorganic nitrogen, none had less mean
chlorophyll a_, and one had greater mean Secchi disc trans-
parency. No significant depression of dissolved oxygen occurred
at depths as great as 53 meters.
B. Rate-Limi ting Nutrient:
Due to significant changes in nutrient concentrations in
the samples during shipment, the algal assay results are not
considered representative of conditions in Boulder Lake at
the times of sampling (08/28/75 and 10/17/75).
The lake data indicate borderline nitrogen limitation in
August and phosphorus limitation in October.
C. Nutrient Controllability:
1. Point sources—No known municipal or industrial point
* See Appendix A.
-------
2
sources impacted Boulder Lake during the sampling year.
The septic tanks serving lakeshore dwellings and a recrea-
tional facility were estimated to have contributed less than
0.1% of the total phosphorus load, but a shoreline survey would
have to be done to determine the significance of those sources.
The present phosphorus loading of 0.68 g/m2/yr is a little
more than that proposed by Vollenweider (Vollenweider and Dillon,
1974) as an oligotrophic loading (see page 11). If the loading is
not increased, the existing trophic quality of Boulder Lake
should persist.
2. Non-point sources--Non-point sources, including pre-
cipitation, contributed essentially all of the total phosphorus
load during the sampling year. Boulder Creek added 74.9% of the
total; and the ungaged tributaries contributed an estimated 22.5%.
The phosphorus export rate of Boulder Creek was 12 kg/km2
during the sampling year (see page 10). This rate was somewhat
higher than that of an unimpacted tributary of nearby Fremont
Lake (7 kg/km2/yr)*.
* Working Paper No. 886.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
.UJ.
A. Morphemetry1 :
1. Surface area: 7.03 kilometers2.
2. Mean depth: 12.2 meters.
3. Maximum depth: 69.8 meters.
4. Volume: 85.766 x 106 m3.
5. Mean hydraulic retention time: 181 days (based on outflow),
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Name
Boulder Creek
Minor tributaries &
immediate drainage -
Totals
2. Outlet -
Boulder Creek
C. Precipitation***:
1. Year of sampling: 25.7 centimeters.
2. Mean annual: 28.5 centimeters.
Drainage
area (km2)*
297.8
31.9
329.7
336,7**
Mean flow
(mVsec)*
5.180
0.544
5.724
5.470
t Table of metric conversions—Appendix B.
ft Prior, 1974; area planimetered on U.S.G.S. quad. maps.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
-------
4
III. WATER QUALITY SUMMARY
Boulder Lake was sampled two times during the open-water season
of 1974 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from
one or more depths at three stations on the lake (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 phyto-
plankton identification and enumeration; and during both 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 near-surface at station 1, 53.3 meters at sta-
tion 2, and 16.5 meters at station 3.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
-------
A.
OF PHYSICAL
CHEMICAL CHARACTERISTICS FOR BGULDEJ LAKE
STG-?/75>
SAMPLING- (10/17/75)
TEMP (c)
OISS OAf (MG/L ,
°H (STAND UNIT', I
TOT ALK (MG/L)
TOT ? (MG/L)
0»THO P (MG/L)
>\02»N03 (MG/l )
AMMONIA (MG/L)
KJEL N (MG/L)
1'iOWf, N (MG/L)
TOTAL N (MG/L)
CnLRPYL A (U^/i «
SECCHI (METERS'
0
0
0
0
. a
6.6
21.
10.
.006
.002
.040
.220
2 • G
2.5
3 S
ANGE
1 5 . i.
9.6
29.
? . b
- 0.031
- 0.01?
~ 0 • UOV
— 0 .60C
- 0.0*0
- 0.660
2.9
JITtS
MEA-;
8.0
2b.
16.
0.012
. !. Jl
.0 r J
0.318
0.053
0.3-4^
2.5
3.3
ME'JIAN
14.3
7.3
25.
• J
16.
0.010
0.003
. Oc'J
0 > 30C
0.040
0.320
2. b
3.3
K
8.5
7.6
1.
. 1
11.
0.006
0.002
0 * 200
0.0<+0
0.220
.c
1.2
3 5
ANC-E
11.7
b.B
3.
- f . J
30.
- 0.011
- 0.00*
- 0 • 200
- 0. 100
- 0.280
- 3.0
6.1
ilTES
it AN
10.5
P. 4
1.
b. t)
18.
0 . C 0 a
0.003
0 . 200
0.055
0.235
• b
3.6
0 SiTtS
MEDIAN KANGL MEAN wE'jlAi''
O*^* »»*>»•» - i»iH>*Htv"0"vOOO vO W« •»
1 • ™ w
U • U 0 O W^W»«W — V-WWOWW'W'-i^'WWW WV -»t-*WWW
V * U 0 C VWWVW'W ^V^'WW'WWWVW'WWWV-W VV^V
0»^20 B-OOOttO — O-*HHH>i*»'&«"*«-«"»
-------
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
08/28/75
10/17/75
Dominant
Genera
1. Chlamydomonas (?) s£.
2. Chroomonas (?) S£.
3. Cryptomonas s£.
4. Sphaerocystis S£.
Total
1. Sphaerocystis sp_.
2 . Aphanothece (?) sp .
3. Elakatothrix sp.
4. Cryptomonas SP.
5. Chroomonas (?) sp.
Total
Station
Number
1
2
3
1
2
3
Algal Units
per ml
3,806
327
59
30
4,222
104
78
52
26
26
286
Chlorophyll a
(ug/1)
2.9
2.0
2.6
1.8
3.0
2.6
2. Chlorophyll a_ -
Sampling
Date
08/28/75
10/17/75
Limiting Nutrient Study:
Because of significant nutrient changes in the samples during
shipment from the field to the laboratory, the algal assay results '
are not considered representative of conditions in Boulder Lake
at the times the samples were collected.
-------
7
The lake data indicate borderline nitrogen limitation in
August and phosphorus limitation in October. The mean inorganic
nitrogen to orthophosphorus ratios were 13 to 1 in August and 18
to 1 in October. Nitrogen limitation would be expected at N to P
ratios of 13 to 1 or less.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Wyoming National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the months
of June and July when two samples were collected at two of the sites.
Sampling was begun in October, 1974, and was completed in July, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Wyoming District Office of the U.S. Geological Survey for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were
calculated using mean annual concentrations and mean annual flows.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean con-
centrations in Unnamed Creek at station B-l and the mean annual ZZ flow.
No known wastewater treatment plants impacted Boulder Lake during
the sampling year.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
-------
9
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Boulder Creek 3,595 74.9
b. Minor tributaries & immediate
drainage (non-point load) - 1,080 22.5
c. Known municipal STP's - None
d. Septic tanks* - <5 <0.1
e. Known industrial - None
f. Direct precipitation** - 125 2.6
Total 4,800 100.0
2. Outputs -
Lake outlet - Boulder Creek 3,105
3. Net annual P accumulation - 1,695 kg.
* Estimate based on two lakeshore dwellings and one campground; see
Working Paper No. 175.
** See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Boulder Creek 110,430 80.5
b. Minor tributaries & immediate
drainage (non-point load) - 19,010 13.9
c. Known municipal STP's - None
d. Septic tanks* - 90 0.1
e. Known industrial - None
f. Direct precipitation** - 7,590 5.5
Total 137,120 100.0
2. Outputs -
Lake outlet - Boulder Creek 176,470
3. Net annual N loss - 39,350 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Boulder Creek 12 371
E. Mean Nutrient Concentrations in Ungaged Stream:
Mean Total P Mean Total N
Tributary Cone, (mg/1) Cone, (mg/1)
Unnamed Creek B-l 0.063 1.108
* Estimate based on two lakeshore dwellings and one campground; see
Working Paper No. 175.
** See Working Paper No. 175.
-------
11
F. 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 meso-
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 , 0.68 0.24 19.5 loss*
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Boulder Lake:
"Dangerous" (eutrophic loading) 0.96
"Permissible" (oligotrophic loading) 0.48
There was an apparent loss of nitrogen during the sampling year. This
may have been due to nitrogen fixation in the lake, solubilization of
previously sedimented nitrogen, or underestimation of the minor tribu-
tary and immediate drainage load. Whatever the cause, a similar nitrogen
loss has occurred at Shagawa Lake, Minnesota, which has been intensively
studied by EPA's former National Eutrophication and Lake Restoration
Branch (Malueg et al., 1975).
-------
12
V. LITERATURE REVIEWED
Malueg, Kenneth W., D. Phillips Larsen, Donald W. Schults, and
Howard T. Mercier; 1975. A six-year water, phosphorus, and
nitrogen budget for Shagawa Lake, Minnesota. Jour. Environ.
Qua!., vol. 4, no. 2, pp. 236-242.
Prior, Roy E., 1974. Personal communication (lake morphometry).
WY Dept. of Env. Qual., Cheyenne.
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.
-------
VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
-------
E DATfc TO HE USED IN RANKINGS
£
CuDt L"<£ -J.JME
5'»
11.167
b.6ll
3.763
8.473
7.792
7.500
2.536
5.575
25.067
12.950
5.410
15-
Ml': ~\ :
ti . o 0 0
8.400
14.400
9.400
12.200
7.400
12.600
14.000
8.600
11.000
15.000
13.200
13.200
10.000
HE LI I J
OI5S 0*1-
0.020
0.002
0.014
0.006
0.003
0.002
0.014
0.004
0.004
0.007
0.014
0.024
0.019
0.017
-------
PERCENT- or LAK^S
LAKE
CODE LAKL
HIGHER VALUES
10)
13)
<»)
5)
1)
6)
9)
7)
2)
11)
MEAN
CHLOrJA
77 (
100 (
<»6 (
15 (
54 (
85 (
23 (
31 (
38 (
92 (
62 (
0 (
8 (
69 (
10)
13)
6)
2)
7)
11)
3)
4)
5)
12)
8)
0)
1)
9)
15-
MIN 00
77
92
8
69
46
100
38
15
85
54
0
27
27
62
( 10)
< 12)
( 1)
( 9)
( 6)
< 13)
< 5)
( 2)
< 11)
< 7)
( 0)
( 3)
( 3)
( 8)
MEOIAN
OISS OkTriO P
A (
92 (
<»2 (
62 (
85 (
100 (
42 (
69 (
77 (
54 (
31 (
0 (
15 (
23 (
1)
12)
5)
8)
11)
13)
5)
9)
10)
7)
4)
0)
2)
3)
1NOEX
NO
216
560
IdS
335
347
558
173
284
338
339
277
IJ4
119
331
-------
LAKES RAW.ED 8r INDEX NOS.
•RANK LAKE CODE LAKE NAME INDEX NO
1 5603 BOULDER LAKE 560
2 5606 FREMONT LAKE 558
3 5605 FLAMING GORGE RESERVOIR 347
4 5610 SEMINOLE RESERVOIR 339
5 5609 OCEAN LAKE 338
6 5604 LAKE DE SMET 335
7 5614 YELLOWTAIL RESERVOIR 331
B 5608 KEY HOLE RESERVOIR 284
9 5611 SODA LAKE 277
10 5601 BIG SANDY RESERVOIR 216
11 5603 BOYSEN RESERVOIR 188
12 5607 GLENDO RESERVOIR 173
13 5612 VIVA NAUGHTON RESERVOIR 134
14 5613 WOODRUFF NARROWS RESERVO 119
-------
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
4
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FOR WYOMING
08/05/76
LAKE CODE 5602
BOULDER LAKE
TOTAL DRAINAGE AREA OF LAKECSQ KM)
JAN FE8
SUB-DRAINAGE
TRIBUTARY AREA(SO KM)
5602AI 336.7 0.45 0.51
5602A2 297.8 0.45 0.45
5602ZZ 38.8 0.057 0.057
TOTAL DRAINAGE AREA OF LAKE
SUM OF SUB-DRAINAGE AREAS
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
336.
MAR
0.57
0.62
0.057
,7
APR
1.05
1.78
0.198
MAY
10.87
17.47
1.841
NORMALIZED FLOWS (CMS)
JUN JUL AUG
30.02
26.62
2.832
12.74
8.78
0.850
4.25
1.78
0.198
SEP
2.38
1.64
0.170
OCT
1.50
1.02
0.113
NOV
0.68
0.76
0.085
DEC
MEAN
0.48 5.47
0.65 5.18
0.057 0.544
SUMMARY
336.7
336.7
TOTAL FLOW IN * 68.55
TOTAL FLOW OUT * 65.50
TRIBUTARY MONTH YEAR
5602A1
5602A2
5602Z2
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
11
12
1
2
3
4
5
6
7
8
9
74
74
74
75
75
75
75
75
75
75
75
75
74
74
74
75
75
75
75
75
75
75
75
75
74
74
74
75
75
75
75
75
75
75
75
75
MEAN FLOW DAY
0.425
0.425
0.283
0.311
0.425
0.425
0.566
1.699
32.848
31.149
1.982
0.566
0.368
0.396
0.255
0.311
0.396
0.396
0.510
1.982
35.396
33.980
2.265
0.850
0.028
0.057
0.028
0.028
0.057
0.057
0.057
0.255
3.681
2.549
0.233
0.085
5
16
12
13
4
21
3
5
18
12
14
1
3
FLOW DAY
0.425
0.283
0.283
0.283
0.850 24
28.317
53.802 25
0.255
0.283
0.255
1.982
13.875 20
62.297 17
FLOW DAY
FLOW
4.248
15.574
25.485
39.644
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/08/05
560201
12 51 22.0 109 37 23.0 3
60ULOER LAKE
56035 WYOMING
11EPALES 2111202
0003 FEET DEPTH CLASS 00
DATE
FROM
TO
75/08/28
75/10/17
DATE
FROM
TO
75/08/28
75/10/17
TIME DEPTH
OF
DAY FEET
11 40 0000
11 30 0000
TIME DEPTH
OF
DAY FEET
11 40 0000
11 30 0000
00010
WATER
TEMP
CENT
15.0
9.4
00665
PHOS-TOT
MG/L P
0.015
0.008
00300
DO
MG/L
7.6
8.8
32217
CHLRPHYL
A
UG/L
2.9
1.8
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
26
48 IK
00031
INCOT LT
REMNING
PERCENT
00400 00410
PH T ALK
CAC03
SU MG/L
7.30 22
7.05 18
00610
NH3-N
TOTAL
MG/L
0.020
0.020K
00625
TOT KJEL
N
MG/L
0.500
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
00671
PHOS-DIS
ORTHO
MG/L P
0.009
0.002K
K VALUE KNOWN TO BE
L£SS THAN INDICATED
-------
STORET
DATE 76/08/J5
560203
42 51 03.0 109 39 13.0 3
faOJLDER LAKE
56035
11EPALES 2111203
0162 FEET DEPTH CLASS 00
DATE
FROM
TO
75/08/28
75/10/17
DATE
FROM
TO
75/08/28
75/10/17
TIME DEPTH
OF
DAY FEET
12 10 0000
12 10 0005
12 10 0025
12 10 0060
12 10 0110
12 10 0158
1 45 0000
1 45 0005
1 45 0020
1 45 0040
1 45 0065
1 45 0105
1 45 0140
1 45 0175
TIME DEPTH
OF
DAY FEET
12 10 0000
12 10 0005
12 10 0025
12 10 0060
12 10 0110
12 10 0158
11 45 0000
11 45 0005
11 45 0020
11 45 0040
11 45 0065
11 45 0105
11 45 0140
11 45 0175
00010
WATER
TEMP
CENT
14.8
14.7
14.2
7.8
6.1
5.H
11.7
11.6
11.5
11.2
10.9
8.9
8.6
8.5
00665
PHOS-TOT
MG/L P
0.010
0.010
0.010
0.008
0.012
0.007
0.006
0.007
0.007
0.006
0.006
0.00«
0.008
00300
00
MG/L
7.
7.
8.
8.
8.
8.
8.
e.
8*
8.
8.
8.
8.
8.
32217
00077
TRANSP
SECChl
INCHES
6 162
6
0
8
4
2
2 240
6
4
2
3
4
2
0
00031
OOOV4
CNOUCTVY
FIELO
MICROMHO
29
25
22
21
21
29
IK
IK
IK
IK
IK
IK
IK
IK
00400
PH
SU
7.50
7.30
7.00
6.80
6.65
6.50
7.05
7.05
6.80
7.00
6.60
6.60
6.15
6.60
00410
T ALK
CAC03
MG/L
16
19
15
10K
10K
21
15
13
19
13
21
22
30
22
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020
0.020
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.400
0.400
0.300
0.300
0.200K
0.600
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02f»N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.040
0.050
0.060
0.020K
0.020K
0.020K
0.020K
0.060
0.060
0.080
0.070
00671
PHOS-OIS
ORTHO
MG/L P
0.004
0.003
0.004
0.002
0.003
0.012
0.003
0.002K
0.002
0.002K
0.003
0.003
0.004
0.004
CHLRPHYL INCDT LT
A
UG/L
2.
3.
REMNING
PERCENT
0
0
K VALUE KNO*N TO 8£
LESS THAN INDICATED
-------
STOfcET RETRIEVAL DATE 76/03/05
5602U3
43 bO 08.0 109 41 34.0 3
aOOLOER LAKE
56035 WYOMING
11EPALES 3111202
0058 FEET OEHH CLASS 00
DATE
FROM
TO
75/08/28
75/19/17
DATE
FROM
TO
75/08/28
75/10/17
TIME DEPTH
OF
DAY FEET
12 45 0000
12 45 0005
12 45 0020
12 45 0054
12 10 0000
12 10 0005
12 10 0020
12 10 0050
TIME DEPTH
OF
DAY FEET
12 45 0000
12 45 0005
12 45 0020
12 45 0054
12 10 0000
12 10 0005
12 10 0020
12 10 0050
00010
HATER
TE.MP
CENT
14.7
14.5
14.3
8.7
11.4
11. C
10.7
10.6
00665
PHOS-TOT
MG/L P
0.031
0.011
0.008
0.008
0.011
0.009
0.009
0.010
00300
DO
MG/L
7.
9.
7.
6.
8.
7.
8.
8.
32217
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
8 100
6
8
6
4 141
6
8
a
00031
26
26
23
22
IK
IK
3
3
00400 00410
PH T ALK
CAC03
SU
7.40
7.80
7.55
7.05
6.80
7.00
6.95
6.90
MG/L
15
16
16
16
15
14
11
15
00610 00625 00630 00b71
NH3-N TOT KJEL N02&N03 PHOS-DIS
TOTAL N N-TOTAL ORTHO
MG/L
0.020K
0.020K
0.040
0.020
0.020K
0.020K
0.020K
0.020K
MG/L
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
MG/L
0.020K
0.020K
0.020K
0.050
0.020K
0.020K
0.020K
0.020K
MG/L P
0.002
0.002*
0.002K
0.005
0.002
0.002
0.002K
0.002K
CHLRPHYL INCDT LT
A
UG/L
2.
2.
REMNING
PERCENT
6
6
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 76/08/05
560341
<*2 49 10.0 109 43 00.0 4
60ULDER CREEK
56 7.5 BOULDER LAKE
0/30ULOER LAKE 110691
GAGING STATION 1.2 HI s* or BOULDER DAM
11EPALES 2111204
0000 FEET DEPTri CLASS 00
DATE TIME DEPTH N02J.N03
FROM OF
TO OAY FEET
74/10/05 15 35
74/11/16 12 55
74/12/12 14 15
75/01/13 14 30
75/05/04 14 00
75/05/24 11 40
75/06/21 10 05
75/07/03 14 30
0630
'{.N03
OTAL
iG/L
0.032
O.Obfa
0.012
0.056
0.060
0.045
0.020
0.030
00625
TOT KJEL
N
MG/L
1.100
1.600
1.300
0.650
1.450
1.300
0.175
0.300
00610
NH3-N
TOTAL
MG/L
0.020
C.035
0.030
0.028
0.035
0.045
0.025
0.025
00671
PHOS-DIS
ORTHO
MG/L P
0.005
0.005
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.015
0.010K
0.010
0.010K
0.030
0.020
0.040
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOrtET
04TE 76/08/05
00630
DATE TIME DEPTH N02J.N03
FROM OF N-TOTAL
TO DAY FEET MG/L
74/10/05 14 45
74/H/18 11 40
74/13/12 15 15
75/05/14 13 15
75/06/01 15 15
75/06/20 14 oo
75/07/03 1? 30
75/07/17 13 00
0.0b4
0.008
0.064
0.090
0.035
0.010
0.020
0.015
00625
TOT KJEL
N
MG/L
0.300
0.400
0.700
0.450
0.150
2.700
0.300
0.100
00610
NH3-N
TOTAL
MG/L
0.040
0.020
0.030
0.055
0.005K
0.065
0.045
0.020
5602A2
42 51 25.0 109 37 00.0 4
BOJLOc^ CHEEK
56 7.5 SCAB C^EEK
T/6GULDE* LaKL 1106-*!
FOOT dKOG ON NUSTH FOKK PACK
11EPALES 2111204
oooo FEET DEPTH CLASS oo
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.005K
0.005K
0.005
0.005K
0.010
0.025
0.005K
00665
PHOS-TOT
Mli/L P
0.005K
0.010K
0.010K
0.050
0.010K
0.060
0.025
0.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STDRET RETRIEVAL DATc 7t>/06/05
DATE TIME OFPTH N03&M03
FROM OF
TO DAY FEET
74/10/05 14 15
74/11/16 12 50
74/13/12 15 00
75/05/14 13 05
75/06/01 15 30
75/06/20 14 15
75/07/03 13 30
75/07/17 12 15
5602^1
42 51 30.0 109 36 22.0 4
UNNAMED CREEK
56 7.5 SC«B CKEEK
T/BOULDER LAKE , 110691
BRDG ON DIRT RU '. 3 MI E BOULDER LK CAMP
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'S.M03
UTAL
IG/L
0.00?
0.016
0.088
0.040
0.005
0.035
0.005
0.015
00625
TOT KJEL
N
MG/L
0.900
1.300
1.100
1.500
1.450
0.200
1.250
0.950
00610
NH3-N
TOTAL
MG/L
0.015
0.040
0.045
0.250
0.065
0.010
0.035
0.040
00671
PHOS-DIS
ORTHO
MG/L P
0.005
0.010
0.005K
0.065
0.020
0.005K
0.155
0.035
00665
PHOS-TOT
MG/L P
0.025
0.040
0.010K
0.180
0.050
0.020
0.090
0.090
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |