U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
CLfARWATER LAKE
WIGKT AND STEARNS COUNTIES
MINNESOTA
EPA REGION V
WORKING PAPER No, 93
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
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REPORT
ON
CLEARWATER LAKE
WRIGKT AND STEARNS COUNTIES
MINNESOTA
EPA REGION V
WORKING PAPER No, 93
WITH THE COOPERATION OF THE
MINNESOTA POLLUTION CONTROL AGENCY
AND THE
MINNESOTA NATIONAL GUARD
DECEMBER, 1974
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1
CONTENTS
Page
Foreword ii
List of Minnesota Study Lakes iv, v
Lake and Drainage Area Map vi
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 13
VI. Appendices 14
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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 fresh water 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 [ 3O3(e)], water
quality criteria/standards review [ 3O3(c)J, clean lakes [ 3l4(a,b)],
and water quality monitoring [ lO6 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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111
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, rnultivariate 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 Minnesota Pollution Control
Agency for professional involvement and to the Minnesota National
Guard for conducting the tributary sampling phase of the Survey.
Grant J. Merritt, Director of the Minnesota Pollution Control
Agency, John F. McGuire, Chief, and Joel G. Schilling, Biologist,
of the Section of Surface and Groundwater, Division of Water Quality,
provided invaluable lake documentation and counsel during the course
of the Survey; and the staff of the Section of Municipal Works, Divi-
sion of Water Quality, were most helpful in identifying point sources
and soliciting municipal participation in the Survey.
Major General Chester J. Moeglein, the Adjutant General of
Minnesota, and Project Officer Major Adrian Beltrand, who directed
the volunteer efforts of the Minnesota National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MINNESOTA
LAKE NAME COUNTY
Albert Lea Freeborn
Andrusia Beltrami
Badger Polk
Bartlett Koochiching
Bear Freeborn
Bemidji Beltrami
Big Stearns
Big Stone Big Stone, MN; Roberts,
Grant, SD
Birch Cass
Bi ackduck Bel trami
Blackhoof Crow Wing
Budd Martin
Buffalo Wright
Calhoun Hennepin
Carlos Douglas
Carrigan Wright
Cass Beltrami, Cass
Clearwater Wright, Stearns
Cokato Wright
Cranberry Crow Wing
Darling Douglas
Elbow St. Louis
Embarass St. Louis
Fall Lake
Forest Washington
Green Kandiyohi
Gull Cass
Heron Jackson
Leech Cass
Le Homrne Dieu Douglas
Lily Blue Earth
Little Grant
Lost St. Louis
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V
LAKE NAME COUNTY
Madison Blue Earth
Malmedal Pope
Mashkenode St. Louis
McQuade St. Louis
Minnetonka Hennepin
Minnewaska Pope
Mud Itasca
Nest Kandiyohi
Pelican St. Louis
Pepin Goodhue, Wabasha, MN;
Pierce, Pepin, WI
Rabbit Crow Wing
Sakatah Le Sueur
Shagawa St. Louis
Silver McLeod
Six Mile St. Louis
Spring Washington, Dakota
St. Croix Washington, MN; St. Croix,
Pierce, WI
St. Louis Bay St. Louis, MN; Douglas, WI
Superior Bay St. Louis, MN; Douglas, WI
Swan Itasca
Trace Todd
Trout Itasca
Wagonga Kandiyohi
Walimark Chisago
White Bear Washington
Winona Douglas
Wolf Beltrami, Hubbard
Woodcock Kandiyohi
Zumbro Olmstead, Wabasha
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Mi nn.
Map Location
i5mi$es—STP Near Kjmball
& Tributary Sampling Site:
No. 2716C1.
/
7 miles—STP Near W tkinJ
& Tributary Sampling Site; /
No’s.2716D1&D2. ,— _/
/
if
c -I
flt
La
CLEARWATER LAKE
Tributary Sampling Site
Lake Sampling Site
Sewage Treatment Facility
- -Th
Th
Direct Drainage Area Boundary
-------
CLEARWATER LAKE
STORET NO. 2716
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Clearwater Lake is eutrophic.
Although nutrient levels were low when compared to all other
Minnesota lakes studied, Clearwater Lake has an aquatic vege-
tation problem. Survey limnologists indicated that the shallow
and shoreline areas were heavily grown with rooted vegetation.
Also, algal blooms were noted on the July and August sampling
periods along with surface plant debris and hydrogen sulfide
in samples from the hypolirnnion.
B. Rate-Limiting Nutrient:
The algal assay sample was lost in shipment from the field;
therefore, no assay results are available. The lake data indi-
cate the lake was nitrogen limited during all three sampling
periods.
C. Nutrient Controllability:
1. Point sources--During the sampling year, it is calculated
that Clearwater Lake received a total phosphorus load at a rate
in excess of the rate proposed by Vollenweider (in press) as
“dangerous”; i.e., a eutrophic rate (see page 12). Of this load,
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2
it is estimated that about 36% was contributed by the communities
of Watkins and Kimball.
It is calculated that even complete removal of phosphorus
at the indicated point sources would result in a loading rate
of 3.8 lbs/acre/yr or 0.43 gfm 2 /yr--a rate still somewhat in
excess of the eutrophic rate of 0.38 g/m 2 /yr. However, if such
a degree of removal can be achieved, it is likely there would be
some improvement in the trophic condition of Clearwater Lake.
2. Non-point sources (see page j2)--The phosphorus export
of the Clearwater River was about three times that of the other
two tributaries to Clearwater Lake and may have been due to
underestimation of the phosphorus loads from Watkins and Kimball.
In all, it is estimated that non-point sources contributed
about 63% of the total phosphorus load to Clearwater Lake during
the sampling year.
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3
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometryt;
1. Surface area: 3,182 acres.
2. Mean depth: 17 feet.
3. Maximum depth: 75 feet.
4. Volume: 54,094 acre/feet.
5. Mean hydraulic retention time: 1.4 years.
B. Tributary and Outlet:
(See Appendix A for flow data)
1 . Tributaries -
Name _______________ __________
Clearwater River
Three Mile Creek
Unnamed Creek
Minor tributaries &
immediate drainage - __________ ________
Total s
2. Outlet -
Clearwater River
C. Precipitation***
1. Year of sampling: 24.3 inches.
2. Mean annual: 28.8 inches.
t DNR lake survey map (1958); mean depth from DNR personnel.
* Drainage areas are accurate within ±5%; mean daily flows are accurate
within ±10%; and ungaged flows are accurate within ±10 to 25% for
drainage areas greater than 10 mi 2 .
** Includes area of lake.
*** See Worki ng Paper No. 1, “Survey Methods”. 1 Reaeal
W 35th Sueet 30 .
OreQQt 9
Drainage area*
100.0 mi 2
16.8 mi 2
21.6 mi 2
30.6 mi 2
169.0 mi 2
Mean flow*
31.1 cfs
5.8 cfs
6.3 cfs
11.5 cfs
54.7 cfs
174.0 mi 2 ** 54.7 cfs
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4
III. LAKE WATER QUALITY SUMMARY
Clearwater Lake was sampled three times during the open-water season
of 1972 by means of a pontoon-equipped Huey helicopter. Each time, samples
for physical and chemical parameters were collected from three stations
on the lake and from a number of depths at each station (see map, page vi).
During each visit, a single depth-integrated (15 feet to surface) sample
was composited from the three stations for phytoplankton identification
and enumeration; and during the last visit, a single five-gallon 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 49 feet at sta-
tion 1, 28 feet at station 2, and 34 feet at’station 3.
The results obtained are presented in full in Appendix B, and the
data for the fall sampling period, when the lake essentially was well—
mixed, are summarized below. Note, however, the Secchi disc summary
is based on all values.
For differences in the various parameters at the other sampling
times, refer to Appendix B.
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5
A. Physical and chemical characteristics:
FALL VALUES
(10/27/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 6.6 7.1 7.1 7.5
Dissolved oxygen (mg/l) 10.2 11.0 11.0 11.8
Conductivity (pmhos) 340 379 363 420
pH (units) 8.0 8.1 8.1 8.1
Alkalinity (n’ig/l) 143 161 155 182
Total P (mg/i) 0.017 0.035 0.029 0.059
Dissolved P (mg/i) 0.010 0.021 0.013 0.038
NO + NO (mg/i) 0.030 0.049 0.040 0.090
Am onia mg/l) 0.030 0.077 0.050 0.140
ALL VALUES
Secchi disc (inches)
36 62
60 94
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6
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
07/03/72 1. Dinobryon 877
2. Anabaena 217
3. Oocystis 181
4. Cyclotella 154
5. Fragilaria 145
Other genera 189
Total 1 ,763
08/29/72 1. Anabaena 789
2. Dinobryon 738
3. Melosira 195
4. Microcystis 181
5. Cryptomonas 65
Other genera 261
Total 2,229
10/27/72 1. Chroococcus 26,181
2. Flagellates 3,417
3. Melosira 1,357
4. Anabaena 1 ,106
5. Dinobryon 754
Other genera 3,667
Total 36,482
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7
2. Chlorophyll a -
(Because of instrumentation problems during the 1972 sampling,
the following values may be in error by plus or minus 20 percent.)
Sampling Station Chlorophyll a
Date Number ( pg/i )
07/03/72 01 9.0
02 6.2
03 2.0
08/29/72 01 4.4
02 3.5
03 20.4
10/27/72 01 31.5
02 28.9
03 20.9
C. Limiting Nutrient Study:
The algal assay sample was lost in shipment from the field,
therefore, no assay results are available. Lake data indicate
that the lake was nitrogen limited during all three sampling
periods.
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8
IV. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Minnesota National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page vi), except for the high
runoff month of April when two samples were collected. Sampling was
begun in October, 1972, and was completed in October, 1973.
Through an interagency agreement, stream flow estimates for the
year of sampling and a “nornialized or average year were provided by
the Minnesota District Office of the U.S Geological Survey for the
tributary sites nearest the lake.
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 loading for unsam-
pled “minor tributaries and immediate drainage” (“ZZ” of U.S.G.S.) were
estimated by using the means of the nutrient loads, in lbs/mi 2 /year, at
station B-i and multiplying the means by the ZZ area in mi 2 .
The operator of the Watkins wastewater treatment plant provided
monthly effluent samples and corresponding flow data. However, Kimball
did not participate in the Survey, and nutrient loads were estimated at
2.5 lbs P and 7.5 lbs N/capita/year.
The tributary nutrient loads given in the following tables are those
measured minus point sources, if any.
* See Working Paper No. 1.
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9
2. Known industrial - None
Treatment
trickling
filter
trickling
filter
stab. pond +
land disposal
t Anonymous, 1974.
* Estimated at 100 gal/capita/day.
The waste treatment facilities of the Village of Annandale consist
of a stabilization pond with effluent disposal by ridge and furrow irri-
gation since 1970. Nutrient loads measured downstream from the treatment
facilities indicate little or no discharge of nutrients from the system
during the sampling year.
A. Waste Sources:
1. Known municipa1 -
Name
Watkins
Kimball
Annandal e
Pop.
Served
785
567
1 ,234
Mean Receiving
Flow mgd) Water
0.200 Clearwater River
0.057* Clearwater River
0.123* Unnamed stream
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10
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
lbsP/ %of
Source yr total
a. Tributaries (non-point load) -
Clearwater River 9,290 48.8
Three Mile Creek 480 2.5
Unnamed Creek (E-2) 820 4.3
b. Minor tributaries & immediate
drainage (non-point load) - 890 4.7
c. Known municipal -
Watkins 5,500 28.8
Kimball 1,420 7.4
Anriandale -
d. Septic tanks* - 130 0.7
e. Known industrial - None - -
f. Direct precipitation** - 500 2.8
Total 19,130 100.0
2. Outputs -
Lake outlet - Clearwater River 4,490
3. Net annual P accumulation - 14,640 pounds
* Estimate based on 209 shoreline dwellings; see Working Paper No. 1.
** See Working Paper No. 1.
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11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
lbsN/ %of
Source yr total
a. Tributaries (non-point load)
Clearwater River 116,800 49.5
Three Mile Creek 15,690 6.6
Unnamed Creek (E-2) 19,470 8.2
b. Minor tributaries & immediate
drainage (non-point load) — 28,580 12.1
c. Known municipal -
Watkins 15,930 6.7
Kimball 4,250 1.8
Annandale -
d. Septic tanks* - 4,910 2.1
e. Known industrial - None - -
f. Direct precipitation** - 30,660 13.0
Total 236,290 100.0
2. Outputs -
Lake outlet - Clearwater River 130,510
3. Net annual N accumulation — 105,780 pounds
* Estimate based on 209 shoreline dwellings; see Working Paper No. 1.
** See Working Paper No. 1.
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12
0. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Clearwater River 93 1,168
Three Mile Creek 29 934
Unnamed Creek (E-2) 38 901
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenweider (in press).
Essentially, his “dangerous” rate is the rate at which the
receiving waters would become eutrophic or remain eutrophic;
his “permissible” rate is that which would result in the
receiving water remaining oligotrophic or becoming oligo-
trophic if morphometry permitted. A mesotrophic rate would
be considered one between “dangerous” and “permissible”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
lbs/acre/yr 6.0 4.5 74.3 33.2
grams/m 2 /yr 0.67 0.52 8.3 3.7
Vollenweider loading rates for phosphorus
(g/m 2 /yr) based on mean depth and mean
hydraulic retention time of Clearwater Lake:
“Dangerous” (eutrophic rate) 0.38
“Permissible” (oligotrophic rate) 0.19
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13
V. LITERATURE REVIEWED
Anonymous, 1974. Wastewater disposal facilities inventory. MPCA,
Minneapolis.
Schilling, Joel, 1974. Personal communication (lake morphometry
and map). MPCA, Minneapolis.
Vollenweider, Richard A. (in press). Input-output models. Schweiz.
A. Hydrol.
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VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
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TR1btJT RY FLOW INFORMATION FOR MINNESOTA
10/30/ 74
LA’( COIW 2716
CLEA WATE LA(F
TOTAL OPAINAGE A A 0F LAKE 174.flO
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUR—fl AINAGE AREAS =
TRIBUTAPY MONT-I YFA
MEAN FLOW DAY
FLOW DAY
FLOW DAY
FLOW
SU8—DPAjNAGF NORMALIZED FLOWS
TPIRUTA Y ARFA JAN FEP NAP APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN
?71 6A1
174.00
11.20
1?.80
39.30
149.50
101.30
101.10
65.50
46.60
51.40
30.50
27.00
19.90
54.73
27 16A?
100.00
6.01
6.49
‘3.00
85. O
58.00
59.40
37.60
25.30
29.80
16.50
14.30
10.90
31.07
?7I 681
16.90
1.93
1.75
5.25
13.10
10.30
10.20
6.84
4.80
6.36
3.33
2.64
2.90
5.79
?716 ?
21.60 -
0.99
0.90
3.94
17.00
12.30
13.00
8.09
4.98
6.89
3.37
2.68
1.97
6.34
?7I6 Z
35.40
‘.01
.09
6.67
30.60
?2.S0
23.30
13.80
8.90
11.80
6.99
5.60
3.95
11.53
MEAN MONTHL,’ FLOWS AND OAILV FLOWS
SUMMARY
174.00
TOTAL
FLOW
IN
=
656.05
173.80
tOTAL
FLOW
OUT
=
656.30
?716A1
10
77
93.70
14
97.00
11
7?
87.70
11
102.00
1?
72
69.90
9
41.00
1
73
31.70
6
43.00
7
73
2?.°0
1
28.00
3
7
)66.flO
11
75.00
4
73
140.00
7
162.00
5
73
109.00
5
117.00
6
73
82.40
10
90.00
7
73
135.00
14
139.00
9
71
44.60
11
56.00
9
73
4?.90
?716A?
10
II
1?
I
7
3
6
5
6
7
P
77
7?
77
71
71
73
71
73
71
73
73
73
50.10
45.10
37.1)
16.70
11.40
95.20
78.40
61.S0
47.50
75.90
21.70
14
11
6
3
11
7
S
10
14
11
52.00
53.00
27.00
23.00
11.00
43.00
91.00
66.00
51.00
77.00
27.00
17 12a.0O
17 71.00
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T !RUTAPY FLOW INFONMATIO’4 FOk INNESO [ A
10/30/ 74
LA(F COOE 2716 CLEA WAT’ W LAKF
MEAN MONTHLY FL WS AND J)AILY FLOWS
TPTRUTAPY MONTH YFAQ iEAN FLOW FLOW hAY FLOW )AY FLOW
271681 10 7? 10.08 14 10.00
1) 7? 11 9.80
1’ 7? .°1 9 6.00
73 5.o 6 6.90
71 3.1’ 3 3.80
3 73 21.70 11 .80
4 71 12.10 6 14.00 17 11.00
5 73 10.90 5 12.00
73 R, , 10 8.80
7 73 13.P0 14 14.00
71 4. 1 11 5.80
9 73 5. 1
?716E2 10 7? 10.20 14 11.00
11 77 R.6 11 10.00
12 7 ? 6.72 9 4.00
71 2q47 6 3 39
71 1.58 3
3 73 16.10 11 7.30
4 73 15. ’0 6 18.00 17 14.00
5 71 13.00 5 14.00
6 71 10.40 10 11.00
7 73 16.30 14 17.00
8 73 4.67 11 5.20
9 73 5.65
?71 6 1? 10 72 ?1.?0 1 22.00
11 7? 17. fl 11 21.00
72 13.S0 9 8.10
73 S•59 6 7.60
2 71 3
3 73 27.60 11 12.00
4 73 ?P. 2 ’) 7 33.03 17 25.00
5 73 ?3. C 5
6 73 19. -0 10 20.00
7 73 ?7. 0 14
8 73 P 37 11 11.00
73 9.6
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APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 74/10/30
271601
45 18 12.0 094 06 54.0
CLEA WATEM LAKE
MINNESOTA
I IEPALES
3
2111202
0030 FEET DEPTH
DATE
FROM
TO
TIME OE Tii
OF
DAY FEET
37217
C LP HYL
A
UG/L
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIP E
DEPTM
WATER
DO
TRANSP
CNI)UCTVY
PH
1
ALK
N02&NO3
NH3—N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N-TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMHO
Su
HG/L
HG/L
HG/L
MG/L P
NG/L P
72/07/01
16 05 0000
21.6
9.8
38
305
8.00
140
0.060
0.080
0.024
0.014
16 05 0010
70. .
7.6
315
7.80
142
0.060
0.070
0.032
0.025
16 05 0015
17.1
1.4
340
7.30
165
0.050
0.090
0.033
0.017
16 05 0022
14.0
0.?
345
7.10
178
0.080
0.150
0.026
0.015
16 05 0030
11.4
1.0
365
7.20
190
0.070
0.360
0.032
0.022
72/08/29
09 ?5 0000
94
330
8.25
140
0.060
0.070
0.020
0.010
09 25 0004
‘1.6
9.0
335
8.30
139
0.050
0.050
0.018
0.009
09 25 0015
18.7
5.8
340
7.95
136
0.060
0.090
0.015
0.009
09 25 0021
17.9
1.b
360
7.60
142
0.050
0.160
0.017
0.015
09 25 0027
16.7
0.0
380
7.40
161
0.100
0.410
0.075
0.022
72/10/27
16 05 0000
72
365
8.00
154
0.040
0.040
0.027
0.012
16 05 0004
7.5
11.4
360
8.10
154
0.040
0.040
0.024
0.012
16 05 0015
7.5
11.8
345
8.10
154
0.040
0.050
0.026
0.013
16 05 0020
7.4
11.0
345
8.10
152
0.040
0.050
0.028
0.014
16 05 0030
7.4
10.5
345
8.10
143
0.030
0.030
0.021
0.013
16 05 0040
7. .
10.2
350
8.10
146
0.030
0.030
0.031
0.012
16 05 0049
7.3
10.8
350
8.00
150
0.030
0.030
0.021
0.012
72/07/03
16
05
0000
9.OJ
77/08/29
09
25
0000
4.4J
72/10/27
16
05
0000
31.5J
J VALUE KNOWN TO BE IN FPRO8
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STOQET PET !FV DAT!T 7 4/1I /30
?71 602
19 (,O.0 0’ 4 O S 00.0
CLtA ATF LAKE
?7 iJNi’ SOTA
1IEI- ALES 2111202
3 0010 FEET )EPT’-I
‘f ’
‘,3,(’
F177
O&)q4
00’.uO
00 ..l0
00 30
00610
006 S
00666
I)AIF
TTMF
nFL T,
‘ATF
r)Q
T 5P
c uucrvy
I M
T ALI
‘ U2 NU3
N’-13—N
P’-iOS—TOT
PHOS—DIS
EPOM
OF
TEMP
SECCriI
FIFLO
CAC J1
N—TOTAL
TOTAL
TO
I)AY
FFET
rE JT
‘1 0/1
1NC S
‘1C OMH0
SU
MG/L
‘40/L
MG/I
M0/L P
MG/L P
72/37/03
Ii 05
( ‘flOO
72.’
It•.1
16
3 , 10
M.fl’.
135
u.040
0.060
0.063
0.0(1
17 05
0015
77.”
.?
315
7.20
174
0.040
0.080
0.025
0.011
17 05
0022
1 7 .J
2R5
.1)
IRA
0. J40
0.750
0.032
0.020
17 05
fl ) 6
15.3
( ‘.4
360
7.10
172
0.050
0.100
0.025
0.012
17 ‘ 5
0’)?4
IC. ’
360
7.10
190
0.070
0.410
0.059
0.041
7?/OA/?Q
O’ S
0000
6 ’)
155
8.05
14
0.010
0.080
0.034
0.022
0 55
0094
0.
.0
345
i. 1O
148
0.070
0.080
0.034
0.022
09 55
0915
1k. ’
, A
140
7.’- 5
142
0.070
0.070
0.019
0.010
09 5
OOIR
l’- .6
-•?
340
7. 0
143
0. Ob O
0.070
0.021
0.010
7?/! ,j/27
IS “0
0000
77
360
P.10
153
0.030
0.040
0.020
0.011
15 40
0004
7•7
•5
150
P.11
155
0.030
0.030
0.017
0.011
15 40
0015
7.1
I1 .
340
e .1O
153
9.010
0.040
0.022
0.010
15 40
00?0
7.!
II.
35(
p.10
153
0.040
0.040
0.021
0.012
r)ATE
TJMF
OF -’T
3 ’1 F
CHL’ -lYL
FZ 0M
OF
A
Ti)
flAY
FEET
Li /L
72/37/01
17 05
0000
6 . J
7?/OR/29
0’ c
000’)
3.5J
72/10/27
IS 40
OOJO
J VALuE FcNo N TO HE [ “4 F) RO-’
-------
ST3PFT pFr 1FvAL. ‘ AT’ 7. ./I(/30
? 71 hI) 3
‘.5 17 03.0 094 (H 06.0
CLEO 1.jATF LA
M I SOT A
1 IFPALES 2111202
3 00 R FFET I)E’-’TIl
(0077
I 5 P
S€ CCI’!
T\C - S
3f ’
60
£4.2
4.3
1.”
I1.•
L.
II. ?
11.0
11.0
I )0
Cl,IUJCT VY
F I ELO
MI ( “ OM’-l0
441
160
160
380
380
420
‘ .20
420
410
4 Iii
410
410
410
410
r)ATF T IMF flF 1
FPOM OF
TO OAY
7?/07/0 IR 10 (100’)
7?/OU/?0 (H (‘0 ( )fl1JI)
09 (‘0 003 ”
09 00 00 !S
(H no on
7?/13f? ’ 13 ‘10 0000
11 30 000k
11 00 ‘) J1
13 00 (‘02
7?/l0/?7 16 c o o
16 35 000 ’.
16 1’ 00)5
16 35 00?S
16 35 0014
‘3AT TIAF 0 ->T -(
FR0r ’ OF
TO flAY FFFT
77/0I (/? o no oooo
7?/IJ/?’- 13 00 0000
7?fI0” 16 35 00
00665 00b66
i ’-i0S-TOT P6OS—DIS
MG/L P MG/L P
“‘10 1 3
1
1 • P
r T
1 . 4
P0 • ‘1
ii . ”
“.7
6• 7
7.1
7.1
7. )
7.)
1”) 7
CHt P ’- t ’L
jr , 1
J
?0 •4J
21) • J
00400 00410
P 1- I I A(K
CACO
SU
140
149
th35 IS(s
7• Ø 151
7.70 147
14.00 1 1 ”
8. lt) 181
8 . 10
8.10
?.QO 173
16
9.00 16 ’1
b.00 1 ”1
H.00 153
00630
NO7 .N03
NJ— T)T AL
MG/L
3.080
0.060
0.040
0. 0’.0
O • 040
0.090
0 • 080
0.080
0.090
0.070
0.050
0.050
o • 060
0• 050
00610
NM 3-
TOTAL
MG / L
0.090
0.080
0.060
0.110
0.190
o • 130
0.140
0 • 1 30
o • 140
o • 120
0.120
0 • 120
0.110
0.110
0.029
0.052
0.033
0.021
0.026
0.052
0.052
0.059
0.0s3
0.04 1
0.040
0 • 0’+5
0 • 048
0 • 050
0.0 14
0 • 028
0.016
0.011
0.006
0.0 35
0.0 34
0 • 035
0.038
0.026
0.026
0.027
0.0 29
0.0 29
J VALUE WOWN TO i I Rj -
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STIPET ETP1FV4L ‘) T 74/1e/J )
7716A1 LS2716A1
45 ?0 00.0 094 07 00.0
CLEAkWATE RIVER
27 15 ANNANDALE
0/CLEARWATER LAKE
F Ri)( BETWEEN GPASS Li( AND CLEARWATER LX
1 1EPALES 2111204
4 0000 FEET DEPTH
i ‘) 06’5 (‘ ‘ I0 00671 00665
1)AIF TTM !)E’ T-4 TOT KJEL I )-13—U PhOS—DIS pI4os—T0T
FROM OF IJ—TUTAL TUTAL 0 TriO
T3 C)AY FEET M( /L W,/L l’c,/L W/L P MG/L
72/10/1410)0 (e34 1.’ Q) C.0 5 0.005K 0.027
72/1 1/lI ‘)9 0 1). ) lfl 0.015 0.045
72/12/09 09 - o.n 0.119
71/31/06 09 70 0.0 ’9 1. 1)00 ).Of’2 0.005K 0.022
71/02/03 JQ )5 3.0 -+ 1.i 0 0.09’ - 0.016 0.0’S
73/01/H 0 4 10 ,.115 1..,00 i.’ 56 0.005K 0.025
73/04/07 09 1)1) C . 1 ” 1 .’ 00 ).042 0.012 0.105
71/C4/17 1) 2’) C.O1)’ 1. 100 0.011 ).006 0.060
71/05/OS 0 15 (j.010( 1 . 00 j. 02 7 0.060
71/06/100950 ‘.010 1 < 0.0 )4 0.005K 0.035
71/07/14 0’ 30 0.01 r( 1.100 ti.C16 0.00 5K 0.020
73/0 /11 (9 45 ( ‘.0 10 ’ l. 00 ,). O IQ 0.005K 0.025
73/10/03 tO 1)0 0.0 )1) ” 1.50) 0.072 0.006 0.035
K VALUE KNOWN TO E LESS
THAN INDICATED
-------
STO ET ET 1FVAI )ATE 74/1 /i0
?716A? LS2716A2
45 Ii 30.0 094 09 30.0
CLFARWATER RIVER
27 15 ANNANDALE
T/CLEAqWATER LAKE.
HI DG i3ETwEEN LK AUGUSTA ANDCLEAPWATER LK
1 IEPALES 2111204
4 0000 FEET DEPTH
(13) 00610 00F 71
ThTF TPAF )FUTH jt) ()3 TOT KJEL “I-Il—” PHOS—DIS PHOS—TOT
FPQM OF N—TOTAL N TOTAL ORT9’)
TD DAY FEET M /L 1G/L MG/I MG/L F MG/L P
7?/10/t 1015 • .O7 1.#- l 0.11 0.176 0.240
7?/11/1l 0 0 ‘).1H’ I .r’9 0 0. 0 0.150 0.410
7?/I2/OQ 10 45 1. 030 ti.-,10 0.330 0.370
73/0t/0’ 10 ?0 0.610 1.Y00 O.4 .0 v.?90 0.300
7 1/O?/01 10 10 0.730 1.470 u.3’ 9 0.260 0.2RO
71/ 01/I l to 70 0.90’) 1. 40 0.440 0. 10 0.270
71/04/07 10 10 0.H’) ‘.100 0.370 0.231 0.330
71/04/17 0 ’ RO .?‘40 1.540 0.I ,P 0.170 0.240
73/05/OS 09 40 0. ’ -0 .31u j. 1 7 O 0.176 0.230
71/06/10 10 /40 0.010K 1.4’). 0.164 0.?50
71/07/141010 C.Ol’ ?. )0 0.015 0.085
71/OR/Il 10 10 0.010k ?.S60 0.02? 0.0?2 0.135
71/10/03 10 16 u.03R 1.0 ,0 0. 13P 0.040 0.120
K VALUE NO N TO 3E LESS
THAN 1’ iDICATED
-------
STORVT RETPfl VAL 1)ATE 74/10/ i
?716 1 LS271bF 1
49 15 00.0 094 09 30.0
T EEMILE CREEK
27 15 ANNANDALE
T/CLEAPWATFR LAKE
CO t-IWY 44 AING E OF FAIRi-IAVEN
11EPALES 2111204
4 0000 FEET DEPflI
00610 00671 0066
1)ATF T1MF fl Tr1 NO JO T( T KJFL N-I l—N PHOS—DIS r’HOS—TJT
FPO. 1 (I r ‘J—TOTAL N TOTAL OPTr I O
TO DAY FF 1 ‘ -l(/L 1G/L MG/L M( /L P MG/L P
7?/I0/1’ c O.?2 ) O.i 50 0.0 9 0.013 0.035
7?/1l/1l CQ 35 U.’PU O. S0 .0 -6 9.011 0.030
7?/1 /0 10 IR 0. PO O.16 0.013 0.026
73/01/06 QQ 0 0.7 03 o.c ) 0.143 .009 0.050
73/Q?/03 10 10 J. 30 1i.R40 0.110 0.023 0.040
71/01/11 11 nO ‘j. - 2 3 2 .p3o 0.37’ 3.105 0.220
73/04/06 07 1 5 ). +J 1.! 0 0.036 0.010 0.040
73/04/1710 ?O 0.16j 0 . i1ii 0.0?9 0.010 0.030
73/O5/0 QQ 15 u.16 1. ’ 4O 0.036 0.030
71/06/10 10 1” O.1 ’ J 0. - 0 ).040 0.021 0.065
71/07/L4 0 45 0 .7 O 0.700 ).0’.b 0.026 0.055
73/0 /1l to ( IC 0.160 0.530 0.036 0.024 0.050
73/10/01 ‘JR RY ‘ .1R0 0.M40 0. 1 )44 0. O IR 0.055
-------
STORET RETRIEVAL DATE 74/10/30
2716C] L 52716C1
45 18 30.0 094 18 00.0
WILLOW CREEK
21 7.5 KIMBALL
T/CLEA ATER LAKE
ST - ‘WY 15/24 X j(, 130VF KIMBALL SIP
1IEPALES 2111204
4 0000 FEET DEPTH
00630 006?S 00610 00671 OOf’65
OaTE TIME r)EPT-l O?e .NO3 TOT KJEL NH3—N HOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL OPTP- O
TO DAY FEET MG/L MC /L MG/L MG/L P MG/L P
7?/I0/14 11 55 0.517 1.000 0.089 0.02G 0.042
7?/11/11 10 ‘0 0.34R 0.960 0.08R 0.020 0.03
72/12/09 1.360 0. 60 0.00f 0.021
73/02/01 1) 15 7.500 0.770 0.231 0.011 0.035
73/03/li tO 00 0.580 5. 00 1.470 0.450 0.810
73/04/07 1] 30 0.200 1.150 0.013 0.011 0.030
71/04/17 10 50 0.?R0 1.150 0.015 0.016 0.045
73/05/05 10 40 0.295 1.760 0.031 0.023 0.040
73/06/10 11 40 0.420 1.500 0.030 O.05 0.157
73/07/14 Ii 00 p.060 1. OR O 0.100 0.0 IQ 0.055
73/0 /11 11 30 .0?0 O.M40 0.086 0.018 0.060
-------
STOPET t ETR1EVA DATE 74/10/ 0
?7 1601 LS27 I6D1
45 18 30.0 094 24 30.0
COUNTY DITCH 20
7.5 WATKINS
T/CLEAi WATE’ LAKE
SF HWY Sb XING ABOVE
L 1EPALES
4
WATKINS SIP
2111204
0000 FEET DEPTH
O’)f.30
00625
00610
00b71
00665
DATE
TP4E
f)FPT+4
NO2 ,,NO3
TOT KJEL
Nr13—N
P -iOS—DIS
PHOS—TOT
F. OH
OF
N—TOTAL
N
TOTAL
ORTHO
TO
DAY
FEET
MG/L
MG/L
I .’L
hlG/L P
‘lc,/L P
7?/10/14
17
15
0.630
2.900
0.380
0.700
0.260
72/11/11
10
10
1.60u
‘.800
0.04A
0.410
1.Q50
73/04/07
11
10
J. 190
6.100
1.680
1.970
?. 70
73/04/17
11
40
1.500
3.800
0.770
1.300
1.57C)
73/35/0
11
15
1.580
4.800
0.870
1.300
1.570
73/06/09
09
50
0.010K
5.000
1.700
l.5 0
2.100
73/07/14
0’
40
0.05’.
Il.COC
7.500
4.200
5.200
73/OR/Il
QM
13
5.500
2.575
2.600
4.400
73/10/03
0
05
0.120
9.500
5.400
4.600
6.100
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 7”/I0/30
271t- i)? LS?71e ,D2
5 LA 00.0 094 24 00.0
CO’J’flY DITCH 020
7.5 WATKINS
T/CLEARWATER 1AP E
PD XINr, 1 P I SSE OF WATIKINSBELO STP
11E$>ALES 2111204
4 0000 FEET DEPTH
( 0 ’30 00625 00610 00671 006 5
DATE TI’ F OE”TH NO? NO3 TOT KJEL NH3-N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL O THO
TO DAY FEET W/L Mr,/L MG/L MC,/L P MC,/L P
72/10/14 1? 25 0.760 1.375 •.105 0.090 0.175
72/11/11 10 20 0.975 1.600 0.01? 0.360 0.760
7?/12/09 09 55 U.0’ 6.400 3.800 2.200 7.150
73/04/07 10 55 0.028 ??.000 0.073 11.100
73/04/17 11 10 0.I 3 5.C00 1.700 2.900 3.150
73/05/05 11 50 C.?!) 4.500 1.890 3.000 3.1 SU
7 3 /06/OQ 08 0 0.11 8 5.400 3.100 4.200 4•40fl
73/07/la 08 45 0.050 15.000 10.400 4.600 r .200
73/08/11 08 33 0.09? 7.200 ‘.000 4.300 5.000
73/10/03 09 40 0.670 17. ’ 00 8.400 7.930 7.930
-------
STORET RETRIEVAL DATE 74/10/40
?716E1 L 5271SE1
45 iS 00.0 094 06 00.0
UNIAMED T IB To SE END OF LAKE
27 15 ANNANDALE
T/CLEAPWAEEP LAKE
ST HWY 55 1 MI ESE ANNANDALE ABOVE SIP
11EPALES 2111204
4 0000 FEET DEPTH
0O63 O06 5 00 10 00671 00 5
DATE TIME DEPTH NO’F JO3 TOT KJEL NH3—N PrIOS—i)IS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MulL MG/L MG/L MG/L P MG/L P
72/ 10/I ’ . 11 15 0.130 ( ‘.975 0.105 0.008 0.037
72/11/11 08 35 0.195 0.840 0.005K 0.009 0.025
7?/1?/09 08 15 0.063 0.970 0.170 0.007 0.03’.
71/01/06 07 45 0.160 1.980 0.540 0.005K 0.095
73/02/03 08 00 0.070 ?.100 0.550 0.008 0.165
73/03/11 09 00 0.550 ?.200 0.270 0.100 0.27’)
71/04/07 09 50 0.093 2.310 0.115 0.013 0.045
71/04/17 09 20 0.031 1.150 0.017 0.015 0.045
71/05/05 09 50 0.034 O. SO 0.01 9 0.021 0.040
73/06/10 08 20 0.01’. ?.0 00 0.105 0.031 0.160
73/07/14 09 00 0.072 2.600 0.420 0.046 0.307
71/08/11 08 00 C.067 2.700 0.030 0.021 0.120
71/10/03 OP 45 0.016 1.900 0.220 0.048 0.200
K V LUF KNOWN TO ‘3E LESS
THAN INDICATED
-------
ST3RET RETRIEVAL 1)ATE 74/10/30
?716E2 LS?716E2
45 1 00.0 Q 4 05 00.0
U ’1N MEU TRIB TO SE END OF LAKE
27 15 ANNANOALE
r,CLEARWATE. .? LA cE
ST HWY 24 AING RELO ANNANDALE STP
1 1EPALES 2111204
4 0000 FEET DEPTH
006?S 00610 00f’71 006 5
DATF TIME DEPTH NO? NO3 TOT KJEL NH3—N PHOS—DIS PHOS-TOT
FROM OF N-TOTAL N TOTAL OPTHO
TO DAY FEET H(;,L MG/L M(,/L MG/L P MG/L
77/10/14 10 SR 0.O7 i.u O O 0.O 6 0.039 0.080
77/11/11 OR 50 0.700 1 .?00 0.012 0.060 0.09 i
7?/1?/0Y OR 40 O.0Y4 0.915 0.082 0.018 0.050
73/01/06 OM 30 0.055 1.150 0.100 0.017 0.040
71/02/01 OR 40 0.140 1.010 0.110 0.014 o.03S
71/03/il 08 30 0.940 6.000 1.000 0.198 1.000
71/04/06 On 10 fl.O5 , ‘.100 0.050 0.007 0.055
71/04/17 09 55 .04? 1.100 0.042 0.022 0.0 n 5
71/OS/OS 10 15 0.0” 3 1.300 0.063 0.023 0.065
73/06/10 09 10 0.033 1.100 0.030 0.0?5 0.06
73/07/14 09 15 0.240 7. O0 0.093 0.056 0.080
73/08/11 08 40 0. 70 1.320 0.110 0.084 0.135
71/10/03 09 15 0.150 1.150 0.058 0.100 0.210
-------
STORET RETRIEVAL DATE 74/10/10
271651 TF271651
45 18 ,30.0 094 ?4 30.0
wAlK INS
27 7.5 WATKINS
T/CLEA wATE LAKE
CO 1)11CM # fj
I IEPALES
P000785
2141204
0000 FEET DEPTH
(u ’(-30
00f 5
00610
00671
006 ”
5u051
50053
DATE
TIME
OE TH
NO2 NO3
TOT KJFL
N -I3—N
PHOS—DIS
PHOS-TOT
FLOw
CONDUIT
FROM
OF
N-TOTAL
N
TOTAL
ORTHO
RATE
FLOW—MGO
TO
DAY
FEET
MG/L
1G/L
MG/L
MG/L P
MG/L
INST MGD
MONTHLY
73/07/1
11 00
CP(T)—
1.600
33.1 ,00
15.800
5.R00
11.500
0.200
0.200
73/07/19
13 00
73/0 /?3
‘.1 )
11.fl OO
0.039
3.000
3.800
0.200
0.200
73/10/04
11 00
1.540
21.000
6.900
3.150
L3O0
0.200
0.200
7 4 / 01 /Qg
15 00
?.00 0
6.OOO
1’.O OO
7.300
L’. S OO
0.200
0.200
74/02/05
15 30
2.400
18.000
13.100
7.830
10.500
0.200
0.200
74/04/01
14 30
1.780
17.000
0.470
2.500
p.500
0.200
0.200
74/05/01
09 00
7.606
17.000
O.?70
2.500
3.800
0.200
0.200
74/06/18
10 30
5.040
16.000
1.000
2.630
L .20O
0.200
0.200
74/07/23
09 30
21.000
3.450
4.100
6.809
0.200
0.200
74/08/05
08 20
R.R00
9.030
0.058
4.800
5.Y00
0.dO O
0.200
74/09/06
08 25
0.040
28.000
9.900
6.300
9.600
0.2C0
0.200
------- |