U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE
GALLATIN COUNTY
MONTANA
EPA EGION VIII
WORKING PAPER No, 794
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
LAIC
GALLATIN COIMY
MONTANA
EPA EGION VIII
WORKING PAPER No, 794
WITH THE COOPERATION OF THE
MONTANA DEPARTMENT OF HEALTH & ENVIRONMENTAL SCIENCES
AND THE
MONTANA NATIONAL GUARD
MAY, 1977
-------
CONTENTS
Page
Foreword i i
List of Montana 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
-------
ii
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)J, water
quality criteria/standards review [§303(c)], clean lakes [§3l4(a,b)j,
and water quality monitoring [5106 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
fresh water lakes. Likewise, inultivariate 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 & Development, U.S. Environmental Protection Agency)
express sincere appreciation to the Montana Department of Health
and Environmental Sciences for professional involvement, to the
Montana National Guard for conducting the tributary sampling
phase of the Survey, and to those Montana wastewater treatment
plant operators who voluntarily provided effluent samples.
The staff of the Water Quality Bureau 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.
Major General John J. Womack, the Adjutant General of Montana,
and Project Officer Major William Yeager, who directed the volun-
teer efforts of the Montana National Guardsmen, are also gratefully
acknowledged for their assistance to the Survey.
-------
IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF MONTANA
LAKE NAME
Canyon Ferry
Clark Canyon
Flathead
Georgetown
Hebgen
Koocanusa
Mary Ronan
McDonald
Nelson
Seeley
Swan
Tally
Tiber
Tongue River
Whitefish
Yellowtail
COUNTY
Broadwater, Lewis and Clark
Beaverhead
Flathead, Lake
Deer Lodge, Granite
Gallatin
Lincoln, MT; British Columbia, Can.
Lake
Flathead
Phillips
Missoula
Lake
Flathead
Liberty, Toole
Big Horn
Flathead
Carbon, Bighorn, MT; Bighorn, WY
-------
HEBGEN LAKE
Tributary Sampling Site
X Lake Sampling Site
Zj Drainage Area Boundary
5 10 15 jo Km
-------
HEBGEN LAKE
STORE! NO. 3005
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Hebgen Lake is meso-eutrophic. It
ranked tenth in overall trophic quality when the 15 Montana lakes
and reservoirs sampled in 1975 were compared using a combination
of six water-quality parameters*. Eight of the water bodies had
less and one had the same median total phosphorus, 11 had less
median dissolved orthophosphorus, none had less but four had the
same median inorganic nitrogen, nine had less mean chlorophyll ja,
and eight had greater mean Secchi disc transparency. Depression
of hypolimnetic dissolved oxygen occurred at stations 1 and 2 in
September.
Survey limnologists noted surface algal concentrations and
some submerged and emergent macrophytes at stations 3 and 4 in
September.
B. Rate-Limiting Nutrient:
The algal assay results indicate Hebgen Lake was nitrogen lim-
ited at the time the sample was collected (07/30/75). The lake
data indicate nitrogen limitation at all sampling stations and
times. In a previous study, it was noted that phosphorus levels
are high and nitrogen is most likely the limiting factor in Hebgen
Lake (Martin, 1965).
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources—No known municipal or industrial point
sources impacted Hebgen Lake during the sampling year. Lakeshore
septic tanks were estimated to have contributed 0.3% of the total
phosphorus load to the lake, but a shoreline survey would be neces-
sary to determine the significance of those sources.
The present phosphorus loading of 0.47 g/m2/year is more than
that proposed by Vollenweider (Vollenweider and Dillon, 1974) as
an oligotrophic loading but less than his suggested eutrophic
loading (i.e., a mesotrophic loading; see page 11).
2. Non-point sources—Over 99% of the total phosphorus input to
Hebgen Lake is attributed to non-point sources. The Madison River
contributed 60.0%, the South Fork Madison River contributed 10.2%,
Duck Creek contributed 5.8%, and Watkins Creek contributed 0.1%.
Ungaged minor tributaries and immediate drainage were estimated
to have contributed 19.9% of the total.
The present phosphorus export rates of the Madison and the
South Fork Madison Rivers, 13 and 12 kg/km Vyear, respectively,
are greater than the rates of the other tributaries of Hebgen
Lake (range of 1 to 5 kg/km2/year; see page 9). However, the
higher rates most likely are due to natural sources in the drain-
age basin rather than unsampled point sources. A previous
study showed no phosphorus decrease in the Madison River following
the 1972 diversion of the seasonal discharge from the only point
source in the drainage basin, the Madison Junction Plant, which served
a campground at the confluence of Firehole and Gibbon Rivers (Kra-
lich and Wright, 1974).
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphemetry :
1. Surface area: 51.27 kilometers2.
2. Mean depth: 8.2 meters.
3. Maximum depth: 37.5 meters.
4. Volume: 420.414 x 106 m3.
5. Mean hydraulic retention time: 172 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Madison River 1,157.7 13.940
Watkins Creek 29.5 0.098
South Fork Madison River 211.6 3.920
Duck Creek 305.4 1.350
Minor tributaries &
immediate drainage - 653.2 9.545
Totals 2,357.4 28.853**
2. Outlet -
Madison River 2,408.7*** 28.330
C. Precipitation****:
1. Year of sampling: 89.7 centimeters.
2. Mean annual: 70.6 centimeters.
t Table of metric conversions—Appendix B.
tt Horpestad, 1975.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Sum of inflows adjusted to equal outflow plus evaporation.
*** Includes area of lake.
**** See Working Paper No. 175.
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4
III. WATER QUALITY SUMMARY
Hebgen Lake 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
two or more depths at four 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 phytoplankton
identification and enumeration; and during the July visit, 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 ^analysis. The maximum depths sampled
were 19.2 meters at station 1, 19.5 meters at station 2, 4.3 meters
at station 3, and 4.9 meters at station 4.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
-------
PARAMETER
TEMP (C)
DISS OXY (MG/L)
CMOCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02*N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (Ur,/L)
SECCHI (METERS)
ft. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 7/30/75)
4 SITES
CHEMICAL CHARACTEHISTics FO«
STORET CODE 30C5
HEbGE-J RESERVOIR
RANGE
7.4 -
4.4 -
92. -
7.5 -
47. -
0.014 - 0.065
0.008 - 0.036
0.020 - 0.040
0.020 - 0.100
0.200 - 0.500
0.040 - 0.140
O.?.?0 - 0.520
2.0 -
4.0 -
2ND SAMPLING ( 9/ 3/75)
4 SITES
3RD SAMPLING (10/20/75)
4 SITES
7.3
O.C
02.
9.1
93.
065
036
040
100
500
140
520
4.4
4.3
MEAN
14.2
7.1
174.
8.4
68.
0.023
0.022
0.02?
0.035
0.287
0.057
0.310
3.3
4.1
MEDIAN
16.3
7.3
172.
B.6
6£>.
0.019
0.021
0.020
0.030
0.300
0.050
0.320
3.3
4.1
KANGE
10.8
1.2
126.
7.6
58.
0.012
0.005
0.020
0.020
0.200
0.040
0.220
4.3
0.5
- 17.0
9.0
- 281.
8.6
96.
- 0.088
- 0.048
- 0.110
- 0.060
- 0.300
- 0.170
- 0.410
- 11.4
4.1
MEAN
15.3
6.8
181.
8.3
73.
0.024
0.016
0.031
0.023
0.213
0.054
0.245
7.8
2.8
MEDIAN
15.4
7.6
178.
8.5
68.
0.020
0.013
0.020
0.020
0.200
0.040
0.220
7.8
3.2
RANGE
7.9
7.6
131.
8.1
75.
0.021
0.006
0.020
0.020
0.200
0.040
0.220
0.4
3.0
- 11.3
- 10.1
- 279.
8.4
- 110.
- 0.040
- 0.030
- 0.020
- O.OtO
- 0.200
- 0.060
- 0.220
2.4
4.3
MEAN
9.9
8.5
191.
8.2
86.
0.028
0.020
0.020
0.024
0.200
0.044
0.220
1.1
. 3.6
MEOIAi
10.6
8.1
183.
8.3
80.
0.02tt
0.022
0.020
0.020
0.200
0.040
0.220
0.9
3.5
-------
B. Biological Characteristics:
1. Phytoplankton -
Sampli ng
Date
07/30/75
09/03/75
10/20/75
2. Chlorophyll
Sampling
Date
07/30/75
09/03/75
10/20/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chroomonas sp.
Fragilaria sp.
Apham'zomenon sp.
Anaba^na sp.
Aphanothece sp.
Other genera
Total
Fragilaria sp.
Chroomonas sp.
Asterionella sp.
Cryptomonas sp.
Stephanodiscus sp.
Other genera
Total
Melosira sp.
Microcystis sp.
Schroederia sp_.
Chroomonas sp.
Gomphosphaeria sp.
Other genera
Total
Station
Number
1
2
3
4
1
2
3
4
1
2
3
4
Algal Units
per ml
171
128
86
86
86
42
599
316
281
105
70
35
105
912
428
86
86
86
43
169
898
Chlorophyll
(yg/D
2.0
3.5
4.4
3.2
8.5
7.1
11.4
4.3
0.8
1.0
2.4
0.4
-------
0.015
0.065
0.065
0.015
0.015
0.015
1.015
1.015
1.7
2.3
26.4
4.0
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/l-dry wt.)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum. indicates that the potential primary productivity
of Hebgen Lake was moderate at the time the sample was
taken (07/30/75). Also, lack of yield response with the
addition of phosphorus until nitrogen also was added
indicates the lake was nitrogen limited at that time.
Note that the addition of only nitrogen resulted in a yield
significantly greater than that of the control.
The lake data also indicate nitrogen limitation. The
mean inorganic nitrogen/orthophosphorus ratios were 7/1
or less at all sampling stations and times, and nitrogen
limitation would be expected.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Montana National
Guard collected monthly near-surface grab samples when possible from
each of the tributary sites indicated on the map (page v). Sampling
was begun in October, 1974, and was completed in September, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Montana 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 concen-
trations in Denny Creek at station D-l and the mean annual ZZ flow.
No known wastewater treatment plants impacted Hebgen 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) -
Madison River 14,505 60.0
Watkins Creek 30 0.1
S. Fk. Madison River 2,470 10.2
Duck Creek 1,405 5.8
b. Minor tributaries & immediate
drainage (non-point load) - 4,815 19.9
c. Known municipal STP's - None
d. Septic tanks* - 55 0.3
e. Known industrial - None
f. Direct precipitation** - None 895 3.7
Total 24,175 100.0
2. Outputs -
Lake outlet - Madison River 20,550
3. Net annual P accumulation - 3,625 kg.
* Estimate based on 96 permanent lakeshore dwellings and 5 campgrounds;
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) -
Madison River 244,425 36.9
Watkins Creek 1,045 0.2
S. Fk. Madison River 94,075 14.2
Duck Creek 40,360 6.1
b. Minor tributaries & immediate
drainage (non-point load) - 225,760 34.0
c. Known municipal STP's - None
d. Septic tanks* - 1,985 0.3
e. Known industrial - None
f. Direct precipitation** - 55,350 8.3
Total 663,000 100.0
2. Outputs -
Lake outlet - Madison River 691,505
3. Net annual N loss - 28,505 kg.
Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Madison River 13 211
Watkins Creek 1 35
S. Fk. Madison River 12 445
Duck Creek 5 132
* Estimate based on 96 permanent lakeshore dwellings and 5 campgrounds;
see Working Paper No. 175.
** See Working Paper No. 175.
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11
E. Mean Nutrient Concentrations in Ungaged Streams:
Mean Total P Mean Total N
Tributary Cone, (mg/1) Cone, (mg/1)
Denny Creek 0.016 0.750
Cougar Creek 0.029 0.556
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/mVyr 0.47 0.07 12.9 loss*
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Hebgen Lake:
"Dangerous" (eutrophic loading) 0.80
"Permissible" (oligotrophic loading) 0.40
* 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, recharge with nitrogen rich ground water, or unknown
and unsampled point sources discharging directly to the lake. Whatever the
cause, a similar loss has occurred at Shagawa Lake, Minnesota, which has been
intensively studied by EPA's former National Eutrophication and Lake Restora-
tion Branch (Malueg et al., 1975).
-------
12
V. LITERATURE REVIEWED
Horpestad, Abe, 1975. Personal communication (lake morphometry). MT
Dept. of Health & Env. Sci., Helena.
Klarich, Duane A., and John C. Wright, 1974. Effect of removal of
wastewater treatment plant effluent from the Madison River,
Yellowstone National Park. Dept. of Biol. MT St. U., Bozeman.
Martin, D. B., 1966. Limnological studies in Hebgen Lake. Ph.D.
Thesis, MT St. U., Bozeman.
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.
Qual., vol. 4, no. 2, pp. 236-242.
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
-------
LAKE DATA TO bE USEO IN
CODE LAKE NAME
3001 CANYON FERR? RESERVOIR
3002 CLARK CANYON ^ESEKVOIR
3003 FLATHEAO LAKE
3004 GEORGETOWN RESERVOIR
3005 HEdGEN RESERVOIR
3006 KOOCANUSA RESERVOIR
3007 MARY «ONAN LA*E
3008 MC DONALD LAKE
3009 NELSON RESERVOIR
3010 SEELEY LAKE
3011 SWAN LAKE
3012 TALLY LAKE
3013 TIBER RESERVOIR
3014 TONGUE RIVER RESERVOIR
3016 WHITEFISH LAKE (LOWER*
MEDIAN.
TOTAL P
0.047
0.04-*
0.008
0.022
0.022
0.045
0.020
0.006
0.029
0.015
0.010
0.011
0.018
0.051
0.008
INO**'\
0.170
0. 160
0.050
0.040
0.040
0.100
0.040
0.180
0.075
0.040
0.050
0.050
0.180
0.050
0.040
500-
M£6N SEC
442. esOO
398.750
267.833
367.333
367.700
337.643
371.091
190.667
456.750
362.857
282.750
339.167
448.555
474.1 11
290.000
MEAN
C.-»LO«A
5.816
2.375
1.273
6.983
4.083
2.669
4.673
0.467
7.233
2.171
3.?fl9
2.083
2.806
16.878
1.400
15-
MIN ^o
U.4CO
12.000
9.000
10.200
13.800
10.400
14.200
6.400
11.400
13.200
9.600
9.200
9.600
13.600
7.000
MEDIAN
01 S5 OK T HO H
0.02v
0.<,>27
O.GtK
0.011
0.02U
0.044
0.006
0.002
0.007
0.010
0.004
0.004
0.004
0.006
0.003
-------
OF LAKES WITH
SR VAL'JES (NUMBER OF
wIT« rilOn
CODE
3001
3003
3003
3004
3005
3006
3007
3008
300"
3010
3011
3012
3013
301*
3016
LAKE NAME
C6NYON FERRY RESEKVOIS
CLARK CANYON -^ESE^voi^
FLATHEAO LAKE
GEORGETOWN RESERVOIR
HE3GEN RESERVOIK
KOOCANUSA 9E5EKVOIR
MARY RONAN LAKE
MC DONALD LAKE
NELSON RESERVOIR
SEELEY LAKE
SWAN LAKE
TALLY LAKE
TIBER RESERVOIR
TONGUE RIVER RESERVOIR
WHITEFISH LAKE (LOWER)
MEulAN
TOTAL P
14 (
7 (
39 (
39 (
39 (
21 (
50 (
100 (
?9 (
64 I
79 (
71 (
57 <
0 (
89 (
2)
1)
12)
5)
5)
3)
7)
14)
4)
9)
11>
10)
8)
0)
12)
Mil) I AN
INO^G N
14 (
21 (
fal (
79 (
79 (
29 (
96 <
4 (
36 (
96 (
46 (
61 (
4 (
46 (
79 (
2)
3)
3)
10)
10)
4)
13)
0)
5)
13)
6)
8)
0)
6)
10)
500-
MEAN SEC
21 !
29 (
93 (
50 (
43 (
71 (
36 (
100 <
7 (
57 (
86 (
64 (
14 (
0 (
79 (
3)
<+>
13)
7)
6)
10)
5)
14)
1)
8)
12)
9)
2)
0)
11)
MEAN
Crl|_0*A
21 (
6<* (
93 (
l-> (
36 (
57 (
29 <
100 (
7 (
71 <
43 (
79 (
50 (
0 (
86 (
3)
<»>
U>
2)
b)
8)
*)
14)
1)
10)
6)
11)
7)
0)
12)
15-
HIN DO
0 (
36 (
86 (
57 (
14 (
50 (
7 (
100 (
43 (
29 (
68 (
79 (
68 <
21 (
93 (
0)
5)
12)
6)
2)
n
D
14)
6)
4)
9)
11)
9)
3)
13)
MEDIAN
01 SS JKTnO ^
t t
14 I
75 i
29 (
21 (
0 (
57 (
100 (
50 (
36 (
75 (
75 (
75 (
43 (
93 (
1)
2)
9)
<«>
3)
0)
8)
!«*)
7)
5)
9)
9)
9)
6)
13)
1'iDt
NO
77
171
<**/
268
232
22o
275
50<»
172
353
39?
429
268
110
519
-------
LAKES RANKEP 8Y INDEX NOS.
RANK LAKE CODE LAKE NAME INDE* NO
1 3016 WHITEFISH LAKE (LOwEP) 51*
2 300d HC OONALD LAKE 504
3 3003 FLATHEAO LA*t
f 3012 TALLY LAKE
5 3011 SWAN LAKE 397
6 3010 SEELEt LAKE 353
7 3007 MARY RONAN LAKE 275
8 3013 TIBER RESERVOIR 268
9 300<» GEORGETOWN RESERVOIR 268
10 3005 HEBGEN RESERVOIR 232
11 3006 KOOCANUSA RESERVOIR 228
12 3009 NELSON RESERVOIR 172
13 3002 CLARK CANYON RESERVOIR 171
14 3014 TONGUE RIVE*-* RESERVOIR 110
15 3001 CANYON FERRY RESERVOIR 77
-------
APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
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
-------
X
TRIBUTARY FLO* INFORMATION FOR MONTANA
LAKE CODE 3005 HEaGEN LAKE
TOTAL DRAINAGE AREA OF LAKE 2*08.7
SUB-DRAINAGE
TRIBUTARY APE4(SQ KM)
JAN!
APR
MAY
NORMALISED FLOwS(CMS)
JUM JUL AUG
SEP
OCT
NUV
DEC
MEAN
3005AI
3005A2
3005C1
3005E1
3005G1
3005ZZ
?408.7
1157.7
29.5
211.6
305.4
70*. 5
25. *9
11.33
0.017
2.27
O.o7
6.80
22.65
11.0*
0.014
2.83
0.42
6.51
21.2*
11.33
0.01*
2.69
0.85
6.80
2:2.09
u.&e
0.023
3.68
0.85
8.21
20.67
22.65
0.255
7.65
2.55
14.16
39.64
22.09
0.396
11.89
3.96
13.59
28.32
14.16
0.283
3.11
1.70
8.21
31.15
12.74
0.057
1.98
1.56
7.08
29.73
11.61
0.028
2.27
0.85
b.80
35.40
12.74
0.028
3.68
1.13
7.36
35. *0
11.89
0.028
2.B3
0.99
7.08
28.03
11.61
0.023
2.27
0.71
6.80
28.33
13.94
0.093
3.92
1.35
8.29
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR
3005A1
HEAN FLOW QAY
3005A2
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
7<*
75
75
75
75
75
75
75
75
75
48.224
41.229
38.030
26.901
26.448
26.561
33.980
39.077
45.505
19.539
27.807
33. 78?
16.990
15.857
14. 158
15.857
15.291
14.442
15.00fl
28.317
45.307
22.653
18.123
16.424
5
2
7
4
9
9
6
3
7
13
2
6
5
2
7
4
9
9
6
3
7
13
2
6
47.572
29.450
60.315
26.986
0.0
0.0
0.0
0.0
46.156
14.328
25.740
33.697
16.9QO
17.273
14.158
15.857
15.857
14.725
15.291
15.291
45.307
23.220
0.0
0.0
SUMMARY
2408.7
2408.7
TOTAL FLOW IN
TOTAL FLOW OUT
330.91
339.80
FLOW DAY
FLOW DAY
FLOW
-------
FLO*' INFORMATION FOR MONTANA
Ori/05/76
LA
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORE! ^ETR'EVAL DATE 76/03/05
300501
44 51 48.0 111 20 00.0 3
HEBGEN RESERVOIR
30031 MONTANA
11EPALES
211120?
0065 FEET DEPTH CLASS
DATE
FROM
TO
75/07/30
75/09/03
75/10/20
DATE
FROM
TO
75/07/30
75/09/03
75/10/30
TJMf DEPTn
OF
DAY FEET
11 00 0000
11 CO 0005
11 ?0 0025
11 00 0040
11 00 0061
12 50 0000
12 50 0005
12 SO 0020
12 50 0040
12 50 0061
13 45 0000
13 45 0005
13 45 0021
13 45 0040
13 45 0063
TIME DEPTH
OF
DAY FEET
11 00 0000
11 00 0005
11 00 0025
11 00 0040
11 00 0061
12 50 0000
12 50 0005
12 50 0020
12 50 0040
12 50 0061
13 45 0000
13 45 0005
13 45 0021
13 45 0040
13 45 0063
00010
HATER
TEMP
CENT
17.1
17.3
16.8
8.8
7.4
16.7
16.7
16.6
16.5
12.1
1.3
1.3
1.2
1.1
1. 1
00665
PHOS-TOT
MCi/L p
0.024
0.019
C.014
0.018
0.026
0.012
0.013
0.015
0.014
0.027
0.029
0.031
0.032
0.030
0.030
00300
DO
MG/L
9.
7.
7.
7.
7.
7.
7.
7.
7.
3.
7.
7.
7.
7.
7.
32217
00077
TRANSP
SECCHI
INCHES
2 156
8
2
0
6
6 160
<*
8
2
0
6 168
8
8
7
8
00031
00094
CNDUCTVY
FIELD
MICROMHO
183
176
172
163
163
178
178
178
179
166
183
181
182
181
182
00400
PH
SO
9.10
8.70
8.50
7.80
8.10
8.40
8.50
3.50
8.35
7.70
8.20
8.15
8.10
8.10
8.10
00410
T ALK
CAC03
MG/L
69
68
67
68
73
68
67
65
64
68
79
79
79
79
79
00610
NH3-N
TOTAL
MG/L
0.030
0.030
0.020
0.040
0.040
0.020K
0.020K
0.020K
0.020K
0.020
0.030
0.030
0.030
0.040
0.030
00
00625
TOT KJEL
N
MG/L
0.200
0.300
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
U02&N03
M-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.040
0.020K
0.020K
0.020K
0.020K
0.100
0.020K
0.020K
0.020K
0.020K
0.020K
00b71
PriOS-OIS
ORTrtO
MG/L P
0.022
0.028K
0.021K
0.023K
0.031K
0.012
0.013
0.013
0.014
0.027
0.023
0.025
0.024
0.023
0.023
CriLRPHYL INCDT LT
A
UG/L
2.
8.
0.
REMNING
PERCENT
0
5
R
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
RETRIEVAL DATF. 76/06/05
30050?
4<» 46 00.0 111 14 55.0 3
HE8GEN RESERVOIR
30031 MONTANA
11EPALES 3111203
0060 FEET DEPTH CLASS 00
DATE
FROM
TO
75/07/30
75/09/03
75/10/20
TIME
OAY
11
11
11
11
11
13
13
13
13
13
13
13
13
13
13
30
30
30
30
30
15
15
15
15
15
15
15
15
15
15
DE°Trl
FEET
0000
0005
0020
0040
0056
0000
0005
0022
0045
0064
0000
0005
0020
0035
0051
00010
WATER
TEMP
CE
lb.3
16.3
16.3
9.1
7.6
17. &
16.6
16.4
15.4
10. 8
10.8
10.7
10.7
10.5
10.4
00665
DATE
FROM
TO
75/07/30
75/09/03
75/10/20
TIME DEPTH
OF
OAY
I
1
1
1
1
13
13
13
13
13
13
13
13
13
13
30
30
30
30
30
15
15
15
15
15
15
IS
15
15
15
FEET
0000
0005
0020
0040
0056
0000
0005
0022
0045
0064
0000
0005
0020
0035
0051
PH03-TOT
MG/L P
0
rj
0
0
0
0
0
0
0
c
0
0
0
0
0
.016
.017
.015
.019
.065
.019
.021
.018
.033
.083
.035
.0-+0
.026
.029
.025
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L
S
7
4
4
4
7
7
7
5
I
R
8
ft
8
Q
3221
INCHES MlCSOMriG
.0 168
.4
.4
.4
.4
.6 135
.8
.8
.0
.2
.2 120
.1
.0
.1
.3
7 00031
172
163
180
149
159
180
178
177
180
174
135
184
187
183
180
CHLRPHYL INCOT LT
A
UG/L
3
7
1
REMNING
PERCENT
.5
.1
.0
00400
su
172
163
180
149
159
180
178
177
180
174
135
184
187
183
180
8.70
8.70
8.50
7.80
7.50
8.50
8.60
b.45
7.80
7.60
8.30
6.30
8.20
8.2o
8.30
00410
T ALK
CAC03
MG/L
68
67
65
67
70
76
77
77
78
86
80
80
80
81
79
00610
NH3-N
TOTAL
MG/L
0.020
0.020
0.02C
0.050
0.100
0.020K
0.020K
0.020K
0.020K
C.060
U.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.200
0.200
0.200
0.300
0.400
0.200
0.200
0.200
0.200
0.300
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02&N03
N-TOTtL
MG/L
O.C2,'
0.020K
0.02CX
0.020"
0.040
0.020*
0.020'
0.020'
0.020
0.110
0.020K
0.020'.
0.020K
0.020K
0.020K
00fc>71
PriOS-OIS
ORTnO
MG/L P
0.0 19K
0.021K
0.013
0.017J
0.036J
0.011
0.014
0.011
0.020
0.048
0.024
0.020
0.019
0.018
0.016
<« V.iLUE KNOWN) TO dt LESS
THAN INDICATED
J* ViLUf-I KNOWN TO nc I 4 F_Rr?0-'
-------
STOSET RETRIEVAL DATE 76/08/05
300503
44 <»7 15.0 111 11 22.0 3
HEBGEN RESERVOIR
30031 MONTANA
UEPALF.S
21112C2
0018 FEET DEPTH CLASS
DATE
FROM
ro
75/07/30
75/09/03
75/1J/20
DATE
FROM
TO
75/07/30
75/09/03
75/10/20
TIME DEPTH
OF
DAY FEET
12 PO 0000
12 00 0005
12 00 0014
11 10 0000
11 10 0005
11 10 0011
12 00 0000
12 00 0005
12 00 0012
TIME DEPTH
OF
DAY FEET
12 00 0000
12 00 0005
12 00 0014
11 10 0000
11 10 0005
11 10 0011
12 00 0000
12 00 0005
12 00 0012
00010
WATER
TE^P
CENT
16.4
16.4
14.3
15.3
14.8
lH.6
7.9
7.9
7.9
00665
PHOS-TOT
MG/L P
0.037
0.018
0.016
0.020
0.027
0.020
0.022
0.026
0.027
00300
DO
MG/L
8.0
a. 2
6.7
8.2
8.0
9.2
1C.1
9.6
9.2
32217
CHLRPHYL
A
UG/L
4.4
11.4
2.4
C0077
THANSP
SECCHI
INCHES
20
156
00031
INCDT LT
REMMNG
PERCENT
00094
CNDUCTVY
FIELD
MICROMHO
105
98
92
128
126
130
131
133
132
00400 00410
Pri
SU
8
8
7
8
8
a
8
8
8
T ALK
CAC03
MU/L
.70 47
.90 48
.90 54
.60 59
.60 60
.60 58
.25 104
.40 75
.40 77
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.040
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
Mu/L
0.500
0.400
0.400
0.200K
0.200
0.300
0.200K
0.200
0.200
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.021K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-OIS
ORTHO
MG/L P
0.008
O.OO'i
0.011
0.008
0.005
0.005
0.006
0.010
0.009
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
S733ET PETRIEVAL DATE 76/03/05
300504
44 44 25.0 111 10 40.0 3
HEBGEN >?ESE«VOI3
30031 (-'ONTA.MA
11EP£LFS 2111302
0020 FEtT DEPTH CLASS 00
DATE
FrfOf
TO
75/07/30
75/09/03
75/10/20
DATE
FROM
TO
75/07/30
75/09/03
75/10/20
TIME DEPTH
OF
DAY FEET
12 15 0000
12 15 0005
12 15 0016
10 55 0000
10 55 0005
11 45 0000
11 45 0005
11 45 0015
TIME DEPTH
OF
DAY FEET
12 15 0000
12 15 0005
12 15 0016
10 55 0000
10 55 0005
11 45 0000
11 45 0005
11 45 0015
00010
WATER
TEMP
CENT
16.3
16.8
13.8
14.6
14.6
8.5
8.5
8.5
C0665
PrtOS-TOT
MG/L P
0.019
0.021
0.024
0.016
C.021
0.026
0.021
C.023
00300
DO
MG/L
10.
7.
6.
6.
9.
9.
9.
9.
32217
0
2
2
8
0
4
0
4
CHLRPHYL
A
UG/L
3.
4.
0.
2
3
4
00077
TRANSP
SECCHI
INCHES
120
120
00031
INCDT LT
REMNING
PERCENT
00094
CNDUCTVY
FIELD
MICWOMHO
302
296
187
281
281
277
278
279
00400 00410
PH T ALK
CAC03
bU MG/L
8.80 92
8.80 93
8.20 66
8.55 96
8.10 96
8.30 107
b.30 107
8.30 110
0061G
NH3-N
TOTAL
Mb/L
0.030
0.030
0.040
0.020K
0.020K
0.020
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.300
0.300
0.300
0.200K
0.200K
0.200
0.200K
0.200K
00630
N02oN03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020*
0.020K
0.020K
00671
PhOS-OIS
ORTnO
MG/L P
0.031rv
0.033
0.027
0.019
0.021
0.030
0.021
0.023
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/08/05
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/10/0?
74/10/05
74/12/07
75/01/04
75/02/09
75/03/09
75/04/06
75/05/03
75/06/07
75/07/13
75/08/02
75/09/06
09 45
11 40
10 15
10 50
11 ?5
10 50
15 55
12 45
12 55
16 15
14 25
12 50
300541
^ 52 10.0 111 20 30.0 4
MADISON rflVER
30 15 HEBGEN DAM
0/HEdGEN LAKE
BNK tnlU OF GRVL rt
11EPALES
0000 FEET OEPTri
090191
.7 M N* OF HE8GEN 0AM
2111204
CLASS 00
'0630
'S.N03
OTAL
IG/L
0.016
0.016
0.024
0.040
0.040
0.032
0.02b
0.010
0.010
0.010
0.005
0.010
006?5
TOT KJEL
N
MG/L
0.600
0.250
0.200
1.000
1.200
0.300
l.?00
0.400
0.450
3.000
0.100
0.350
00610
NH3-N
TOTAL
MG/L
0.025
O.C10
0.015
0.010
0.008
0.016
0.025
0.01C
0.015
0.055
0.005
.1.015
00671
PHOS-DIS
OftTHO
MG/L P
0.010
0.005
0.010
0.010
0.016
0.008K
0.015
C.008
0.015
0.025
0.015
0.020
00665
PHOS-TOT
MG/L P
0.010
0.010
0.010K
0.020
0.040
0.020
0.015
0.010K
0.060
0.040
0.020
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STO^ET WETRIFVAL DATE 76/06/05
30054?
44 43 00.0 111 06 05.0 4
MADISON -h'N LAKE 090192
H*Y 191 drfOG 3.6 MI N OF w YELLOWSTONE
11EPALES 211120*
oooo FEET DEPTH CLASS oo
OC630
DATE TIME DEpTH M02&N03
FHOM OF N-TOTAL
TO DAY FEET MG/L
74/10/02 09 05
74/10/05 12 45
74/12/07 09 35
75/01/04 09 30
75/06/07 12 10
75/07/13 15 40
75/08/02 12 00
75/09/06 11 30
0.016
0.024
0.010
0.016
0.03S
0.015
C.025
0.030
00625
TOT KJEL
N
MG/L
0.400
0.400
1.100
1.100
0.375
0.700
0.100
0.100
00610
NH3-N
TOTAL
MG/L
0.017
0.040
0.040
0.025
0.030
0.030
0.020
0.017
00671
PHOS-DIS
ORThO
MG/L P
0.010
0.015
0.013
0.015
0.025
0.015
0.020
0.015
00665
PHOS-TOT
MG/L P
0.010
0.030
0.013
0.020
0.095
0.040
0.040
0.015
-------
STJRET ^ETRIEVAL DATE 7b/0t5/05
00630
DATE TIMF DEPTH N02&.N03
FROM OF N-TOTAL
TO DAY FEET MG/L
74/10/02 13 15
7W10/05 1* 45
74/12/07 13 15
75/07/13 13 30
75/08/03 16 00
C.016
0.020
0.064
0.020
0.020
00625
TOT KJEL
N
MG/L
0.100
0.400
0.400
0.450
0.200
00610
NH3-N
TOTAL
MG/L
0.015
0.015
0.040
0.045
0.025
3005C1
44 48 10.0 111 17 00.0 4
•ATKINS CREtK
30 • 15 HE6GEN 0AM
T/HEB6EN LAKE 090191
SEC RO BROG i MI s or WATKINS CRK RANCH
11EPALES 2111204
0000 FEET DEPTH CLASS 00
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.005K
0.005K
0.005
0.010
00665
PHOS-TOT
MG/L P
0.010K
0.005K
0.010K
0.010K
0.010
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
5TORET RETRIEVAL DATE 7b/0a/05
300501
44 «,2 35.0 111 13 00.0 4
DENNY WEEK
30 la w YELLOWSTONE
T/HEBGEN LAKE 090192
UNMPRVD KO XING 6.5 MI NW OF w YLLWSTONE
11EPALES 211120H
0000 FEET OEPTH CLASS 00
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/10/05 13 05
75/07/13 14 30
75/08/07 17 CO
75/0-V06 14 00
0630
'&N03
OTAL
G/L
0.056
0.010
0.045
0.040
00625
TOT KJEL
N
MG/L
1.100
1.050
0.450
0.250
00610
NH3-N
TOTAL
MG/L
0.025
0.030
0.015
0.040
00671
PHOS-OIS
OKTHO
MG/L P
0.005K
C.005
C.010
0.010
00665
PHOS-TOT
MG/L P
0.005K
0.020
0.030
0.010
K VALUE KNOWN TO BE
LESS THAN INOIC«TED
-------
STORE? »ETRIEVAL DATE 76/08/05
3005E1
44 40 50.0 111 11 35.0 4
S FORK, MADI50N RIVER
30 15 rf YELLOWSTONE
T/HEbGEN LAKE 030192
HrtY 20/191 BRDG 4.5 MI WN* OF * YLLWSTNt
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/10/02
74/10/05
74/12/07
75/01/04
75/02/09
75/03/09
75/04/06
75/05/04
75/06/07
75/07/13
75/08/07
75/09/06
TIME 1
OF
DAY
12 -30
12 10
14 00
13 00
13 30
11 25
15 00
13 00
12 30
14 40
17 45
13 20
FEET
00630
N02&N03
N-TOTAL
MG/L
0.032
0.044
0.032
0.184
d.040
0.032
0.120
0.035
0.020
0.025
0.030
0.040
00625
TOT KJEL
N
MG/L
0.700
0.600
0.650
0.600
l.aoo
0.200
1.850
0.650
0.100
0.750
0.550
0.050
00610
NH3-N
TOTAL
MG/L
0.025
0.025
0.020
0.010
0.032
0.016
0.030
0.030
0.010
0.020
0.015
0.025
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.010
0.005K
0.010
0.008K
0.006K
0.020
0.005
0.010
0.010
0.015
0.015
00665
PHOS-TOT
MG/L P
0.010K
0.010
0.010K
0.040
0.020
0.010
0.030
0.010K
0.030
0.020
0.030
0.020
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
STORCT RETRIEVAL DATE 76/os/os
DATE TIME DEPTH N02J.N03
FROM OF
TO DAY FEET
74/10/03
74/10/05
74/12/07
75/01/04
75/02/09
75/03/09
75/04/06
75/05/03
75/06/07
75/07/13
75/08/02
75/09/06
09 40
12 00
10 05
10 35
11 10
10 47
15 40
12 35
12 45
16 05
14 10
12 40
3005F1
44 46 10.0 111 06 45.0 4
COUGAR C*EEK
30 15 TEPEE CKEEK
T/HE3GEN LAKE 090191
HWY 191/387 atfDG 8 MI N OF M YELLOWSTONE
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'J.N03
OTAL
IG/L
0.032
0.024
0.040
0.056
0.056
0.056
0.060
0.040
0.015
0.010
0.010
0.020
00625
TOT KJEL
N
MG/L
0.100K
0.100K
0.500
0.600
0.900
0.500
0.800
0.300
0.250
2.100
0.050
0.050
00610
NH3-N
TOTAL
MG/L
0.065
0.015
0.045
0.040
0.048
0.048
0.050
0.025
0.010
0.035
0.010
0.015
00671
PHOS-OIS
ORTHO
MG/L P
0.015
0.010
0.015
0.028
0.016
0.008
0.025
0.020
0.010
0.010
0.020
0.010
00665
PHOS-TOT
MG/L P
0.015
0.020
0.020
0.030
0.040
0.030
0.030
0.030
0.080
0.020
0.020
0.010
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
RETRIEVAL DATE 76/08/05
300501
44 46 45.0 111 06 45.0 4
DUCK CREEK
30 15 TEPEE CREEK
T/HEBGEN LAKE 090191
HWY 191/287 BRDG 9 MI N OF W YELLOWSTONE
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/10/0?
74/10/05
74/12/07
75/01/04
75/02/09
75/03/09
75/04/06
75/05/03
75/06/07
75/07/13
75/08/02
75/09/06
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
12
10
10
11
10
15
12
12
16
14
12
35
15
00
30
05
45
30
30
40
00
05
30
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
.024
.020
.056
.080
.080
.056
.060
.030
.015
.010
.005
.010
MG/L
0.
0.
0.
1.
0.
0.
3.
0.
0.
2.
0.
0.
200
300
100K
000
700
900
300
900
300
900
150
175
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
015
015
015
030
032
032
065
025
015
045
010
015
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
010
010
010
015
016
016
020
020
026
025
020
015
MG/L P
0.020
0.020
0.020
0.050
0.040
0.030
0.040
0.030
0.060
0.030
0.040
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |