U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
CLARK CANYON RESERVOIR
BEAVERHEAD COUNTY
IWTANA
EPA REGION VI11
WORKING PAPER No, 791
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
CLARK CANYON RESERVOIR
BEAVERHEAD COUNTY
MONTANA
EPA REGION VIII
WORKING PAPER No, 791
WITH THE COOPERATION OF THE
MONTANA DEPARTMENT OF HEALTH & ENVIRONMENTAL SCIENCES
AND THE
MONTANA NATIONAL GUARD
, 1977
-------
CONTENTS
Page
Foreword ii
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 9
V. Literature Reviewed 13
VI. Appendices • 14
-------
11
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.
-------
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
anc 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.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF MONTANA
LAKE NAME
Canyon Ferry
Clark Canyon
Flathead
Georgetown
Hebgcn
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
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CLARK CANYON RESERVOIR
Tributary Sampling Site
X Lake Sampling Site
o to 20 Km.
I
-------
CLARK CANYON RESERVOIR
STORE! NO. 3002
I. CONCLUSIONS
A. Trophic: Condition:
Survey data indicate that Clark Canyon Reservoir is eutrophic.
It ranked thirteenth in overall trophic quality when the 15 Montana
lakes and reservoirs sampled in 1975 were compared using a combina-
tion of six parameters*. Thirteen of the water bodies had
less median total phosphorus, 11 had less median inorganic nitro-
gen, 12! had less median dissolved orthophosphorus, five had less
mean chlorophyll a_, and ten had greater mean Secchi disc transparency.
Survey limnologists observed surface concentrations of algae in
September and October as well as submerged aquatic weeds at those
times.
B. Rate-Limiting Nutrient:
Due to significant changes in the phosphorus concentrations in
the samples, the algal assay results are not considered representa-
tive of conditions in the reservoir at the times of sampling.
The reservoir data indicate nitrogen limitation all four
sampling times.
C. Nutrient Controllability:
1. Point sources—No known municipal or industrial point
sources contributed phosphorus to Clark Canyon Reservoir during
the sampling year. Septic tanks serving two shoreline campgrounds
* See Appendix A.
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2
were estimated to have contributed less than 0.1% of the total
phosphorus load, but a shoreline survey would be necessary to
determine the significance of those sources.
The present phosphorus loading of 1.00 g/m2/yr is greater
than that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a eutrophic loading (see page 12).
2. Non-point sources—The phosphorus load from non-point
sources, including precipitation, amounted to 99.9% of the total
load reaching the reservoir during the sampling year. The Red
Rock River added 47.5% of the total phosphorus load; Horse
Prairie Creek, 37.4%; and the ungaged tributaries added an esti-
mated 13.3%.
The non-point phosphorus export rates of the Red Rock River
and Horse Prairie Creek were 2 and 6 kg/km 2/yr, respectively
(see page 11). These rates are comparatively low; the mean
rate of 37 gaged and sampled Montana tributaries was 8 kg/km 2/yr.
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry:
1. Surface area: 19.97 kilometers2.
2. Mean depth: 15.8 meters.
3. Maximum depth: 45.1 meters.
4. Volume: 315.526 x 106 m3.
5. Mean hydraulic retention time: 1.0 years (based on outflow)
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Red Rock River . 4,006.7 6.65
Horse Prairie Creek 1,320.9 3.08
Minor tributaries &
immediate drainage - 663.8 0.45
Totals 5,991.4 10.18
2. Outlet -
Beaverhead River 6,011.4** 9.79
C. Precipitation***:
1. Year of sampling: 43.0 centimeters.
2. Mean annual: 28.5 centimeters.
t Table of metric conversions—Appendix B.
tt Raw!ings, 1975.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of reservoir.
*** See Working Paper No. 175.
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4
III. WATER QUALITY SUMMARY
Clark Canyon Reservoir was sampled four 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 stations on the reservoir (see
map, page v). During each visit, a single depth-integrated (4.6
m to surface) sample was composited from the stations for phytoplankton
identification and enumeration; and during the first, third, and
I
fourth visits, a single 18.9-liter depth-integrated sample was com-
posited for algal assays. Also each time, a depth-integrated sample
was collected from each of the stations for chlorophyll ji analysis.
The maximum depths sampled were 27.1 meters at station 1, 9.4 meters
at station 2, and 7.6 meters at station 3.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
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PARAMETER
TEMP
DISS OXY (MG/L)
CNDCTVY (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)
1NORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMftRY OF OrlYSICAL A.MO
1ST SAMPLING ( 5/38/75)
3 SITES
RANGE MEAN MEDIAN
6.2 - 7.8 7.a 7.2
8.2 - 9.8 8.9 8.8
374. - 383. 378. 376.
8.1 - 8.3 8.2 8.1
234. - 308. 274. 274.
0.023 - 0.062
0.010 - 0.032
0.100 - 0.130
0.050 - 0.070
0.400 - 0.700
0.150 - 0.190
0.510 - 0.820
1.0 - 1.4 1.3 1.4
2.3 - 4.4 3.4 3.4
0.033 0.026
0.019 0.018
0.112
0.057
0.550
0.169
0.110
0.060
0.550
0.170
0.662 0.665
CHEMICAL CHARACTERISTICS FOR CLARK CANYON RESERVOIR
STOrfET COOE 3002
2ND SAMPLING ( 7/31/75)
3 SITES
RANGE
9.9 - 15.8
3.0 -
7.0
385. - 435.
8.0 - 8.3
188. - 194.
0.058 - 0.069
0.036 - 0.062
0.040 - 0.230
0.030 - 0.120
0.300 - 0.700
0.140 - 0.260
0.440 - 0.820
0.9 - 1.4
3.0 - 3.2
MEAN MEDIAN
14.4 15.3
6.0
409.
8.3
191.
0.064
0.050
0.040
0.105
0.500
0.150
0.540
5.8
410.
8.2
191.
0.064
0.049
0.075
0.096
0.517
0.171
0.592
1.2
3.1
1.2
3.2
6.4 -
09. -
8.3 -
14. -
035 -
020 -
020 -
020 -
300 -
040 -
320 -
3.9 -
1.5 -
3RD SAMPLING ( 9/ 3/75)
INI
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
3E
17.7
9.2
427.
8.5
312.
0.113
0.035
0.050
0.130
0.900
0.170
0.920
7.5
1.9
SITES
MEAN
16.6
7.6
415.
8.4
289.
0.056
0.026
0.032
0.043
0.508
0.075
0.540
5.5
1.6
MEDIAN
16.3
7.7
412.
8.4
296.
0.048
0.025
0.035
0.040
0.450
0.075
0.485
5.2
1.5
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A. SUMMARY OF ^HYSICAL AND Ot^ICAL CHARACTER 1ST ICS
ST02ET COOt 3002
4TH SAMPLING (10/20/75)
CLARK CANYON
PARAMETER
TE1P (C)
DISS OXY (MG/L)
CNOCTVY (MCROMO)
PH (STAND UMTS)
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 (UG/L)
SECCHI (METERS)
RANGE
9.9 -
6.9 -
368. - 3f>5.
8.2 -
110. - 306.
0.043 - 0.070
0.024 - 0.032
0.020 - 0.060
0.080 - 0.140
0.400 - 0.600
0.130 - 0.200
0.420 - 0.660
1.1 -
2.1 -
3 SITES
MEAN
3
6
1 »
4
if
0
12
iO
0
0
0
.0
4
1
10.1
8.2
360.
8.4
247.
0.049
0.028
0.052
0.119
0.469
0.172
0.522
1.5
2.1
MEDIAN
10.0
8.3
382.
8.4
252.
0.047
0.027
0.050
0.120
0.500
0.170
0.550
1.1
2.1
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B. Biological Characteristics:
1. Phytoplankton -
Sampli ng
Date
05/28/75
07/31/75
09/03/75
10/20/75
2. Chlorophyll a^ -
Sampling
Date
05/28/75
07/31/75
09/03/75
10/20/75
Dominant
Genera
1. Chroomonas sp.
2. Cryptomonas sp_.
3. Eunotia sp.
4. Schroederia sp.
5. Hantzschia sp.
Total
1. Schroederia sp.
2. Anabaena sp.
3. Chroomonas sp.
Total
1. Aphanizomenon sp.
2. Chroomonas sp.
3. Cryptomonas _sj>.
4. Schroederia sp.
Total
1. Aphanizomenon sp.
2. Chroomonas sj).
3. Cryptomonas sp.
4. Schroederia sp.
Total
Station
Number
1
2
3
1
2
3
1
2
3
1
2
3
Algal Units
per ml
175
145
87
58
58
523
371
53
53
477
1,634
218
145
36
2,033
327
210
117
23
677
Chlorophyll
(yg/D
1.0
1.4
1.4
1.2
1.4
0.9
3.9
5.2
7.5
2.4
1.1
1.1
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C. Limiting Nutrient Study:
An apparent loss of phosphorus occurred in the algal assay
samples between the times of collection and the beginning
of the assays, and the results are not representative of
conditions in the reservoir at the times the samples were
taken.
The reservoir data indicate nitrogen limitation at all
sampling stations and times. The mean inorganic nitrogen/
orthophosphorus ratios ranged from 9/1 to 3/1, and nitrogen
limitation would be expected.
-------
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Montana National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the high
runoff month of June when two samples were collected. 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 reservoir.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads for unsampled
"minor tributaries and immediate drainage" ("22" of U.S.G.S.) were esti-
mated using the means of the nutrient loads, in kg/km 2/year, at stations
B-l and D-l and multiplying the means by the ZZ area in km2.
No known wastewater treatment plants impacted Clark Canyon Reser-
voir during the sampling year.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
* See Working Paper No. 175.
-------
10
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Red Rock River 9,465 47.5
Horse Prairie Creek 7,465 37.4
b. Minor tributaries & immediate
drainage (non-point load) - 2,655 13.3
c. Known municipal STP's - None
d. Septic tanks* - 5 <0.1
e. Known industrial - None
f. Direct precipitation** - 350 1.8
Total 19,940 100.0
2. Outputs -
Reservoir outlet - Beaverhead
River 11,775
3. Net annual P accumulation - 8,165 kg.
* Estimate based on two shoreline campgrounds; see Working Paper No. 175.
** See Working Paper No. 175.
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11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Red Rock River 223,690 55.2
Horse Prairie Creek 112,800 27.9
b. Minor tributaries & immediate
drainage (non-point load) - 46,800 11.6
c. Known municipal STP's - None
d. Septic tanks* - 140 <0.1
e. Known industrial - None
f. Direct precipitation** - 21.560 5.3
Total 404,990 100.0
2. Outputs -
Reservoir outlet - Beaverhead
River 311,590
3. Net annual N accumulation - 93,400 kg.
[). Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Red Rock River 2 56
Horse Prairie Creek 6 85
* Estimate based on two shoreline campgrounds; see Working Paper No. 175.
** See Working Paper No. 175.
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12
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 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 1.00 0.41 20.3 4.7
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Clark Canyon Reservoir:
"Dangerous" (eutrophic loading) 0.78
"Permissible" (oligotrophic loading) 0.39
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13
V. LITERATURE REVIEWED
Rawlings, A., 1975. Personal communication (reservoir morphometry),
Bur. of Reclamation, Helena.
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.
-------
14
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LA«E IJATA TO BE USED IN BANKINGS
LA
MEDIAN
TOTAL P
0.047
O.Oi-<
0.008
0.022
0.022
0.045
0.020
0.006
0.029
0.015
0.010
0.011
0.018
0.051
0.003
MEDIAN
INC*G S
0.170
0.160
0.050
0.040
0.040
0.100
0.010
O.I 80
0.075
0.010
0.050
0.050
0.180
0.050
O.OiO
500-
MEAN SEC
442.aOO
39fc. 750
267.833
367.333
367.700
337.643
371.091
190.667
456.750
362.857
232.750
339.167
446.555
474.111
290.000
^EAN
Cr>LOPA
5.3)6
2.375
1.273
6.983
4.083
2.669
4.673
0.467
7.233
2.171
3.?«9
2.083
2.B06
16.373
1.400
15-
MlN jQ
1 H . 4 0 0
12.000
9.000
10.200
13.300
10.400
14.800
6.400
11.400
13.200
9.600
9.200
9.600
13.600
7.000
MEOiAN
OI5S 0«T-tO r-
0 < 0 2 •*
0.027
O.OOt
0.011
0.02U
0.04^
0.006
0.002
0.007
0.010
0.004
0.004
0.004
0.008
0.003
-------
OF
GCO£ L---C NA«E
3001 CANYON FEWRY
3CC2 CLA^K CANYON
3003 FLATnEAO LAx.E
3004 GEORGETOWN RESERVOIR
3005 HE8GEN RESE*vOl«
300fc KOOCANUS4 3E5EKVOIS
3007 MARY RONAN LAKE
3008 MC DONALD LAKE
3009 NELSON RESERVOIR
3010 SEELEY LAKE
3011 SWAN LAKE
3013 TALLY LAKE
3013 TIBER RESERVOIK
3014 TONGUE RIVER *ESERVOIR
3016 WHITEFISH LAKE (LOWER)
TOTti.
14 <
7 (
8^ (
39 (
39 (
21 (
50 (
100 (
?9 (
64 (
79 (
71 (
57 (
0 (
89 (
N
p
2)
1 )
12)
5)
5)
3)
7)
14)
4)
9)
11)
10)
8)
0)
12)
i NO-
14
?1
61
79
79
29
96
4
36
96
46
61
4
46
79
AN
•j N
( 2i
( 31
( 6)
( 10)
< 10)
( 4)
( 13)
< 0)
t 5)
( 13)
< 6)
( 8)
( 0)
( 6)
< 10)
500-
21 i
29 «
93 (
50 (
43 (
71 (
36 (
100 (
7 (
57 1
86 <
64 (
14 (
0 (
79 (
:c
3!
*)
13)
7)
6)
10)
5)
14)
1)
8)
12)
9)
2)
0)
11)
C-..0-
21 (
fru (
93 (
1- (
36 t
57 (
29 (
ICO (
7 (
71 (
43 (
79 (
50 (
0 (
86 (
A
3)
'•*)
IJi
2)
3)
6)
*)
14)
1)
10)
6)
11)
7)
0)
12)
15-
0 (
3* l
66 (
57 (
14 (
5C i
7 <
100 (
43 (
29 (
68 (
79 <
68 (
21 (
93 (
0
5'.
12)
•3)
2)
7)
1)
14)
6)
4)
9)
11)
9)
3)
13)
!J|E-JI
D I S S j "<
/ «
14 >.
75 <,
2S. <
21 (
0 (
57 (
100 (
50 (
36 (
75 (
75 (
75 (
43 (
93 (
T%w
i)
2>
*>
->
3)
0)
8)
l->
7)
5)
9)
9)
9)
6)
13)
N'-J
n
1 71
**/
26^
232
22c
275
50^
172
353
397
429
26 =
110
519
-------
'_4 NOS.
3ASK LAKE CODE LAKE NAME INDEX, r.
1 3016 ••HlTEFISn LAKF (LO»,E>1 51^
2 3003 K'C OONALD L4KE S:^
3 3003 FLATHEAO LA-^E ^S7
«• 3012 TALLY LAKE 429
5 3011 SWAN LAKE 397
6 3010 SEELEY LAKE 3S3
7 3007 MARr XONAN LAKE 275
d 3013 TI6E* RESESVOIR . 268
9 300<« GEORGETOWN RESERVOIR 263
10 3005 HEBGEN PESESVOIR 232
11 3006 KOOCANUSA RESERVOIR 228
12 3009 NELSON RESErtVOI* 172
13 3002 CLA=(K CANYON RESERVOIR 171
1^ 301^ 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
4
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FOR
LAKE CODE 300? CLARK CANYON
TOTAL DRAINAGE i3£A OF LAKE (SO KM) b^ll.u
OS/05/75
T=>Ife'JTA3Y AS^AtSO KM)
FE3
APR
MAY
NORMALIZED FLOWStLMS)
JON JUL 4O;j
)CT
NUV
OEC
MEA.N
3002A1
3002*1
300301
3002ZZ
*S01 1 .4
4006.7
1320.9
170."V
5.fc6 5. 6^
4.53 4.25
1.13 0.99
0.1-* 0.11
OTAL DRAINAGE
6.51
3.96
1.4?
0.11
AREA OF
s.sO
7.08
2.83
0.14
LAKE =
UM OF SUB-DRAINAGE AREAS =
12.7^
18.41
9.91
1.27
6011.4
5498.6
16.99
8.50
7.79
1.4U
14.16
7.08
4.31
0.57
1A^ f
14.1*3
5.06
2.83
0.42
TOTAL FLO*
TOTAL FLOW
*.91
5.66
1.42
0.42
IN =
OUT =
7.93
4.81
0.83
0.28
121.73
117.23
7.93
5.10
1.42
0.28
7.08
4.53
1.42
0.14
9.79
6.65
3.08
0.45
MEAN MONTHLY FLOWS AND DAILY FLO*S
TRIBUTARY MONTH YEAR MEAN FLOW DAY
3002A1
FLOW DAY
FLOW DAY
FLOW
300281
10
11
1?
1
?
3
4
5
6
7
8
9
10
11
1?
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
4.531
1.501
1.529
1.303
2.124
2.180
2.067
6.485
19.6^-?
26.561
34.830
28.40?
5.040
5.777
4.984
4.9S5
4.248
3.964
5.239
18. 8(?
16.480
13.705
10.874
10.052
5
3
8
5
2
?
6
18
7
12
5
7
5
3
8
5
?
2
6
18
7
12
5
7
11.978
1.359
1.614
1.303
2.379
2.180
2.124
5.493
20.671
27.467
33.697
30.582
4.955
6.?30
4.814
4.531
4.2^,8
4.248
3.653
22.653
19.255
12.035
11.83t>
7.646
22
16.990
-------
-f FLO* INFORMATION Fu3 MONTANA 0«/05/76
CODE 300? CLA3K. CANrON
MEAN MONTHLY FLOWS AMD GAIL* FLOWS (OS)
TRIBUTARY MONTH YEA* 1JIEAK FLOrf DAY FLO* DAY FLO* OAY FLO*
300?'J1 10 M
11 7u
1? 74
1 75
2 75
3 75
4 75
5 75
6 75 15.857 7 13.309 2? 16.^90
7 75
8 75
9 75
1.M6
1.274
1.133
0.991
0.991
1.557
8.21?
15.857
12.459
4.389
1.841
3
8
5
2
2
6
18
7
12
5
7
i.699
1.416
1.133
0; 991
0.991
1.472
13.026
13.309
14.158
4.P14
2.265
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
KETRIEVAL DATS 76/08/05
DATE
TO
75/05/2H
75/07/31
75/09/03
75/10/20
OOOlU
TIME DEPTH *ATER
OF TEMP
OAY FEET
10
10
10
10
10
10
14
14
14
14
14
14
13
13
13
13
13
16
16
16
16
16
16
^5
45
45
45
45
45
45
45
45
45
45
45
40
40
40
40
40
00
00
00
CO
00
00
0000
0005
0015
0030
0060
0088
0000
0005
0020
0045
0070
0089
0000
0005
0015
0045
0078
0000
0005
0015
0035
0060
0080
CENT
7.
7.
7.
7.
6.
6.
15.
15.
15.
14.
10.
9.
17.
17.
16.
15.
15.
10.
10.
10.
10.
10.
10.
1
2
3
2
*•
2
5
4
3
2
2
9
6
3
7
9
9
3
3
3
2
2
0
00300
00
^G/L
9
9
8
8
8
6
6
5
4
7
3
7
6
8
7
6
7
8
8
8
6
e
.0
.0
.6
.6
.?
.4
.1
.4
.5
.0
.0
.0
.8
.0
.6
.4
.2
.2
.4
.4
.9
.3
300201
44 59 45.0 112 51 JS.'O 3.
CLAKK CANYON
30001 MONTANA
090191
11EPALES
211
009? FEET DEPTH CLASS
00300
00
^G/L
9.0
9.0
8.6
8.6
8.?
6.4
6.1
5.4
4.5
7.0
3.0
7.0
6.8
8.0
7.6
6.4
7.2
8.2
8.4
8.4
6.9
8.3
00077 00094
TRAMSP CNOUCTVY
SECCHI FIELD
INCHES MIC^OMHO
134 374
375
376
375
376
380
126 410
385
399
425
405
403
73 425
427
417
411
41?
84 373
384
385
368
383
382
00400
PH
su
8.10
8.20
8.20
8.10
8.10
8.10
8.25
8.30
8.25
8.20
8.00
8.00
8.40
8.40
8.40
8.40
8.40
8.40
8.40
8.40
8.40
8.40
00410
T ALK
CAC03
MG/L
( 282
308
252
272
294
276
190
189
188
194
194
194
272
302
312
304
214
244
234
254
280
252
270
00610
NH3-N
TOTAL
MG/L
0.060
0.060
0.060
0.060
0.050
0.060
0.100
0.110
0.100
0.100
0.040
0.030
0.040
0.040
0.040
0.040
0.130
0.080
0.130
0.140
0.140
0.140
0.110
1202
00
00625
TOT KJEL
N
MG/L
0.700
0.400
0.400
0.500
0.400
0.500
0.700
0.600
0.700
0.600
0.600
0.300
0.400
0.400
0.500
0.400
0.600
0.500
0.500
0.600
0.600
0.500
0.500
00630
N02&N03
N-TOTAL
MG/L
0.110
0.110
0.110
0.110
0.110
0.130
0.050
0.040
0.040
0.070
0.220
0.230
0.050
0.040
0.040
0.040
0.040
0.050
0.060
0.060
0.060
0.060
0.060
00671
PHOS-OIS
ORTHO
MG/L P
0.019
0.019
0.018
0.018
0.018
0.032
0.056
0.053
0.046
0.048
0.053
0.062
0.027
0.025
0.025
0.023
0.035
0.028
0.028
0.029
0.032
0.030
0.031
-------
STOSET RETRIEVAL DATE 7fc/08/05
300301
44 59 45.0 112 51
CLARK CANYON
30001
38.0 3
040191
00v3 FEET DEPTn
2111202
CLAS5 00
DATE
FROM
TO
75/05/28
75/07/31
75/09/03
75/10/20
TIME
OF
OAY
10
10
10
10
10
10
14
u
14
14
14
14
13
13
13
13
13
16
16
16
16
16
16
45
45
45
45
45
45
45
45
45
45
45
45
40
40
40
40
40
00
00
00
00
00
CO
DEPTH
FEET
0000
0005
0015
0030
0060
0088
0000
0005
0020
0045
0070
0089
0000
0005
0015
0045
0078
0000
0005
0015
0035
0060
0080
00665 32217 00031
PHOS-TOT CHLRPrirL INCOT LT
A REMMNG
MG/L P UG/L PERCENT
0.062 1.0
0.025
0.023
0.025
0.025
0.039
0.064 1.2
0.065
C.069
0.067
3.068
0.064
0.045 3.9
0.046
0.047
0.045
0.060
0.070 2.4
0.050
0.051
0.047
0.047
0.048
-------
STORE.T RETRIEVAL DATE 76/06/05
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/05/23 11
11
11
75/07/31 15
15
15
75/09/03 15
15
15
15
75/10/20 15
15
15
30 0000
30 0005
30 0018
35 0000
35 0005
35 0017
00 0000
CO 0005
00 0013
00 0031
30 0000
30 0005
30 0018
00010
WATER
CENT
7.3
7.8
7.7
15.8
15.5
15.3
16.6
16.4
16.3
16.2
10.0
10.1
10.0
300202
44 57 15.0 112 51 23.0 3
CLAKK CANTON
30001 M
090191
llEPAi_£S
211
0022 FEET DEPTH CLASS
0030C
00
MG/L
9.8
9.2
b.b
6.2
6.0
P. 2
7.8
7.8
6.4
8.3
S.6
8.3
00077
TRANSP
SECCHl
INCHES
17<*
120
6C
84
00094
CNOUCTVY
FIELD
MICROMHO
382
383
381
435
419
419
417
411
411
409
382
381
384
00400
PH
SU
8.20
8.10
8.20
8.30
8.35
8.35
3.35
8.40
8.45
8.45
8.20
8.35
8.35
00410
T ALK
CAC03
MG/L
290
266
234
191
190
192
246
312
292
296
HO
260
306
00610
NH3-N
TOTAL
MG/L
0.060
0.050
0.050
0.110
0.120
0.110
0.020
0.020
0.020
0.020
0.110
0.120
0.120
1202
00
00625
TOT KJEL
N
MG/L
0.700
0.500
0.600
0.400
0.500
0.500
0.600
0.500
0.400
0.300
0.400
0.400
0.400
00630 00671
N02&N03 PHOS-OIS
N-TOTAL ORThO
MG/L MG/L P
0.110
0.100
0.120
0.040
0.040
0.040
0.030
0.020
0.020
0.020
0.020K
0.050
0.050
0.010
0.020
0.016
0.036
0.037
0.036
0.023
0.026
0.022
0.020
0.027
0.027
DATE
FROM
TO
75/05/28
75/07/31
75/09/03
75/10/20
00665 32217 00031
TIME DEPTH PHOS-TUT CHLPPHYL INCDT LT
OF A REMNING
DAY FEET
11
11
11
15
15
15
15
15
15
15
15
15
15
30
10
30
35
35
35
00
00
00
00
30
30
30
0000
0005
0018
0000
0005
0017
0000
0005
0018
0031
0000
0005
0018
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
.025
.056
.025
.058
.05e
.064
.060
.062
.044
.035
.043
.046
.051
UG/L PERCENT
1.4
1.4
5.2
1.1
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET
OATE 76/03/00
300203
44 5« 35.0 112 53 59.0 3
CLARK CANYON
30001 MONTANA
090191
11EPALES 2111202
00?-= F££T DE^T" CLASS 00
DATE
TO
75/05/28
75/07/31
75/09/03
75/10/20
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
12
12
12
15
15
15
15
15
15
13
13
13
13
05
05
05
IS
15
15
?0
?0
20
45
45
45
45
0000
0005
0022
0000
0005
0025
0000
0005
0021
0000
0005
0015
0025
CENT
7.4
7.4
7.2
15.7
15.6
14.3
17.7
16.1
15.9
10.0
10. C
10.0
9.9
003CO 00077 0009*
oo TSANSP CNOUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
8.8
8.6
8.8
6.2
6.0
5.8
9.2
7.6
6.6
8.2
8.4
*?.4
8.5
90 376
377
375
126 403
407
410
60 415
411
409
84 378
379
380
383
00400 00410
PH T ALK
CAC03
SU
8.30
8.30
8.10
8.30
8.30
8.30
8.55
8.40
8.35
8.43
8.40
8.40
8.40
MG/L
264
280
264
189
192
190
2«0
282
306
240
232
240
284
00610 00625 00630 00671
NH3-N TOT KJEL N02*>N03 PHOS-DIS
TOTAL N N-TOTAL ORTrlO
MG/L
0.070
0.050
0.060
0.100
0.110
0.120
0.030
0.050
0.070
0.100
0.120
0.120
0.120
MG/L
0.700
0.600
0.600
0.400
0.500
0.400
0.900
0.700
0.400
0.400
0.500
0.400
0.400
MG/L
0.120
0.100
0.110
0.040
0.040
0.050
0.020K
0.020
0.040
0.060
0.050
0.050
0.050
MG/L P
0.021
0.018
0.016
0.053
0.057
0.048
0.029
0.029
0.029
0.027
0.027
0.026
0.026
DATE
FROM
TO
75/05/28
75/07/31
75/09/03
75/10/20
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
12
12
12
15
15
15
15
15
15
13
13
13
13
05
05
05
15
15
15
?0
?0
?0
45
45
45
45
0000
0005
0022
0000
0005
0025
0000
0005
0021
0000
0005
0015
0025
MG/L P
0.028
0.02V
0.029
0.063
0.067
0.061
0.113
0.071
0.049
0.054
0.045
0.045
0.045
UG/L PERCENT
1.4
0.9
7.5
1.1
K VALUE KNO*N TO 8E
LESS ThiN INDICATED
-------
APPENDIX E
TRIBUTARY DATA
-------
STOwET H'ETPIEVAL OATE 7*
3002A1
45 00 12.0 112 51 10.0 4
30 . 3EAVE»H£AD CO
0/CLA-<.-. CANYON 090191
HrfY 15 BSDG .5 Ml H* OF CLA^K CANfON DAM
11£HAL£5 211120*
OOOo rtET oePTn CLASS 00
DATE
FKOM OF
TO DAY
TIME DEPTH
FEET
74/10/05
74/11/03
74/12/08
75/01/05
75/03/02
75/03/02
75/04/OS
75/05/18
75/06/07
75/07/12
75/08/05
75/09/07
12 C5
10 10
09 30
09 35
11 10
07 45
09 30
11 30
11 30
11 00
15 30
09 30
00630
N02NN03
M- TOTAL
MG/L
0.103
0.1?0
0.152
0.184
0.160
C.175
0*195
0.145
0.130
0.110
0.240
0.080
00625
TOT KJEL
N
MG/L
0.700
0.900
1.300
1.900
0.700
0.250
0.450
0.300
1.250
0.650
1.050
0.550
00610
NH3-N
TOTAL
MG/L
0.050
0.055
0.075
0.050
0.048
0.052
0.035
0.035
0.070
0.080
0.025
0.135
00671
PriOS-DIS
OPTHO
MG/L P
0.015
0.025
0.015
0.016
0.008K
0.010
C.010
0.020
0.040
0.065
0.040
00665
PHOS-TOT
MG/L P
0.030
0.025
O.U20
0.020
0.016
0.020
0.020
0.060
0.030
0.040
K VftLuE KNOWN TO BE
LESS THAN INDICATED
-------
STOffET 3ETR1EVAL CATC 76/05/05
300261
44 55 00.0 112 49 20.0 4
*ED ROCK RIVE-*
30 SEAvEKnEAD CO
T/CLA^< CANYON
H4Y 15 S30G AT RED
11EPAL£S
oooo FEET D
090191
21112C*
CLASS oo
DATE TIME DEPTH N02e>N03
fCQM Of
TU GAY FEET
74/13/05
74/11/03
74/12/08
75/01/05
75/02/02
75/03/02
75/04/06
75/05/18
75/06/07
75/06/22
75/07/12
75/08/05
75/09/07
11 50
09 40
09 00
08 55
10 20
07 30
09 00
12 00
11 00
13 45
10 30
15 00
09 00
0630
C.N03
OTAL
G/L
0.252
0.352
0.352
0.432
0.400
0.336
0.300
0.110
0.055
0.140
0.125
0.145
0.270
00625
TOT KJEL
N
MC-/L
0.700
0.300
1.100
1.300
1.200
0.700
1.10C
0.650
1.200
0.450
0.700
0.250
00610
NH3-N
TOTAL
MG/L
0.015
0.010
0.008
0.015
0.040
0.040
0.035
0.020
0.025
0.040
0.030
Oi.040
0.005
00671
PHOS-DIS
ORTHO
MG/L P
D.005K
0.010
0.005K
0.015
0.008
0.008K
0.010
0.040
0.025
0.030
0.025
0.015
0.010
00665
PHOS-TOT
MG/L P
0.005K
0.020
0.020
0.050
0.010
0.050
0.040
0.080
0.080
0.070
0.040
0.030
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/08/05
300201
45 00 40.0 113 01 05.0 4
HORSE PRAIRIE CR£EK
30 15 GRANT
T/CLA3K CANYON 090191
HKY 324 SftOG 4.8 MI * OF 115 JCT
11EPALE5 21112&4
0000 FEET DEHTn CLASS 00
DATE
FROM
TO
74/10/05
74/11/03
74/12/08
75/01/05
75/02/02
75/03/02
75/04/06
75/05/l«
75/06/07
75/06/22
75/07/12
75/08/05
75/09/07
00630 00625
TIME DEPTH N02kN03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
09
oa
08
09
07
08
11
10
14
10
14
08
04
10
00
00
30
00
00
00
00
15
00
30
00
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
.19?
.024
.048
.096
.096
.064
.020
.045
.020
.005
.015
.025
.025
MG/L
2.
0.
0.
1.
0.
1.
0.
1.
1.
1.
0.
0.
0.
600
500
900
500
600
300
400
450
500
750
700
625
450
00610 00671 00665
MH3-N PHOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
010
015
020
020
032
144
CIS
060
080
035
025
092
015
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
.030
.045
.025
.020
.024
.088
.025
.055
.065
.070
.095
.060
.035
MG/L P
0.035
0.050
0.030
0.030
0.030
0.160
0.040
0.120
0.100
0.130
0.140
0.040
------- |