U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE EWU CLAIRE
EAU CLAIRE COUNTY
WISCONSIN
EPA REGION V
WORKING PAPER No, 37
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
T&GPO 697.032
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REPORT
ON
LAKE EflU CLAIRE
EAU CLAIRE COUNTY
WISCONSIN
EPA REGION V
WORKING PAPER No, 37
WlTH THE COOPERATION OF THE
WISCONSIN DEPARTMENT OF NATURAL RESOURCES
AND THE
WISCONSIN NATIONAL GUARD
OCTOBER, 1974
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1
CONTENTS
Page
Foreword ii
List of Wisconsin Study Lakes iv , v
Lake and Drainage Area Map Vi, Vii
Sections
I. Conclusions 1
II. Introduction 3
1111. Lake and Drainage Basin Characteristics 4
IV. Lake Water Quality Summary 5
V. Nutrient Loadings 11
VI. Literature Reviewed 16
VII. Appendices 17
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1 I
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)], clean lakes [ 3l4(a,b)J,
and water quality monitoring [ lO6 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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iii
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation’s
fresh water lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
AC KNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Wisconsin Department of
Natural Resources for professional involvement and to the Wis-
consin National Guard for conduct of the tributary sampling
phase of the Survey.
Francis H. Schraufnagel, Acting Assistant Director, and Joseph
R. Ball of the Bureau of Water Quality, and Donald R. Winter, Lake
Rehabilitation Program, provided invaluable lake documentation and
counsel during the Survey. Central Office and District Office per-
sonnel of the Department of Natural Resources reviewed the prelim-
inary reports and provided critiques most useful in the preparation
of this Working Paper series.
Major General James J. Lison, Jr., the Adjutant General of
Wisconsin, and Project Officer CW-4 Donald D. Erickson, who directed
the volunteer efforts of the Wisconsin National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF WISCONSIN
LAKE NAME COUNTY
Altoona Eau Claire
Beaver Dam Barron
Beaver Dam Dodge
Big Eau Pleine Marathon
Browns Racine
Butte des Morts Winnebago
Butternut Price, Ashland
Castle Rock Flowage Juneau
Como Walworth
Crystal Vilas
Delavan Walworth
Eau Claire Eau Claire
Elk Price
Geneva Walworth
Grand Green Lake
Green Green Lake
Kegonsa Dane
Koshkonong Jefferson, Rock, Dane
Lac La Belle Waukesha
Long Price
Middle Walworth
Nagawicka Waukesha
Oconomowoc Waukesha
Okauchee Waukesha
Petenwell Flowage Juneau
Pewaukee Waukesha
Pigeon Waupaca
Pine Waukesha
Poygan Winnebago, Waushara
Rock Jefferson
Rome Pond Jefferson, Waukesha
Round Waupaca
Shawano Shawano
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V
LAKE NAME COUNTY
Sinnissippi Dodge
Swan Columbia
Tainter Dunn
Tichigan Racine
Townline Oneida
Trout Vilas
Wapogassett Polk
Wausau Marathon
Willow Oneida
Winnebago Winnebago, Fond Du Lac,
Cal umet
Wisconsin Columbia
Wissota Chippewa
Yellow Burnett
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Wisconsin
flap Location
LAKE EAU CLAIRE
X Lake Sampling Site
® Tributary Sampling Site
9 Mi
Scal e
-------
vi i
WI sconsi n
Map Location
)
(
TAy R Co .
CLA CO.
LAKE EAU CLAIRE
Lake Sampling Site
Tributary Sampling Site
Sewage Treatment Facility
Direct Drainage Area Boundary
EAU CLAIRE Co.
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LAKE EAU CLAIRE
STORET NO. 5515
I. CONCLUSIONS
A. Trophic Condition:
Survey data and the records of others show that Lake Eau
Claire is eutrophic.
B. Rate-Limiting Nutrient:
Algal assay results show that Lake Eau Claire was nitrogen
limited at the time the assay sample was collected. The lake
data indicate nitrogen limitation in June as well, but the
August data indicate a borderline phosphorus limitation.
C. Nutrient Controllability:
1. Point sources--During the sampling year, Lake Eau Claire
received a total phosphorus load at a rate over five times that
proposed as “dangerous” by Vollenweider (in press) i.e., a eutro-
phic rate (see page 15). Of this load, the sewered communities
in the drainage are estimated to have contributed only about 13%.
Even with 100% phosphorus removal at the point sources, the lake
would still receive a phosphorus load of about 70 lbs/acre/yr or
7.8 g/m 2 /yr. Therefore, it is concluded that phosphorus removal
at the communities in the drainage would not appreciably improve
the trophic conditon of Lake Eau Claire.
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2
2. Non-point sources (see page 15)--The phosphorus export
of the Muskrat Creek during the sampling year was similar to
that of other unimpacted Wisconsin streams studied. However,
the exports of the Eau Claire River and Hay Creek were appreci-
ably higher and indicate underestimation of the point-source
loads to those streams.
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II. INTRODUCTION
Lake Eau Claire was formed in 1937 by impoundment of the Eau Claire
River in the lower Chippewa River drainage in west central Wisconsin.
It is the largest water body in Eau Claire County. Water levels are
controlled by a 25-foot-head dam owned by Eau Claire County. The entire
shoreline of the lake is also owned by the County which leases building
rights to individuals. Much of the lake drainage is in the Eau Claire
County Forest.
Recreational uses of the lake include swimming, boating, and fishing
Game fish present include muskellunge, walleyes, large- and small mouth
bass, and panfish; carp are said to be a management problem (Sather and
Threinen, 1964).
Public access is good, and commercial facilities include three boat
rentals and a resort.
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4
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry*:
1. Surface area: 1,118 acres.
2. Mean depth: 7.4 feet.
3. Maximum depth: 25 feet.
4. Volume: 8,307 acre/feet.
5. Mean hydraulic retention time: 10 days.
B. Tributary and Outlet:
(See Appendix A for flow data)
1 . Tributaries -
Name Drainage area Mean flowt
Eau Claire River 506.0 mi 2 373.6 cfs
Hay Creek 39.9 mi 2 26.8 cfs
Muskrat Creek 29.5 mi 2 20.8 cfs
Minor tributaries & 2
immediate drainage - 17.8 mi 13.8 cfs
Totals 593.2 mi 2 434.9 cfs
2. Outlet -
Eau Claire River 595.0 mi 2 tl 434.9 cfs 1
C. Precipitation 1 ’ t :
1. Year of sampling: 46.4 inches.
2. Mean annual: 31.0 inches.
* Dept. of Natural Resources lake survey map (1960).
1- Drainage areas are accurate within ±0.5%; mean daily flows are accurate
within ±40%; mean monthly flows are accurate within ±35%; and normalized
monthly flows are accurate within ±35%.
ti Includes area of lake; outflow adjusted to equal sum of inflows.
ttt See Working Paper No. 1; “Survey Methods”.
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5
IV. LAKE WATER QUALITY SUMMARY
Lake Eau Claire was sampled three times during the open-water season
of 1972 by means of a pontoon-equipped Huey helicopter. Each time, sam-
ples for physical and chemical parameters were collected from five stations
on the lake and from a number of depths at each station (see map, page vi);
near-surface samples were collected once at stations 6 and 7. During each
visit, a single depth-integrated (15 feet or near bottom to surface) sample
was coniposited from the stations for phytoplankton identification and enumera-
tion; and during the last visit, two separate five-gallon depth-integrated
samples were composited from stations 1, 3, and 4 for one assay and from
stations 2 and 5 for the other. The maximum depths sampled were 18 feet at
station 1, 7 feet at station 2, 17 feet at stations 3 and 4, and 9 feet at
station 5.
The results obtained are presented in full in Appendix B, and the data
for the fall sampling period, when the lake was essentially 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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6
A. Physical and chemical characteristics:
FALL VALUES
(11/05/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 4.2 4.6 4.6 4.7
Dissolved oxygen (mg/i) 9.6 10.2 10.4 10.6
Conductivity (pmhos) 72 79 80 82
pH (units) 6.5 6.9 7.0 7.1
Alkalinity (mg/i) 12 14 14 16
Total P (mg/i) 0.097 0.116 0.118 0.134
Dissolved P (mg/i) 0.053 0.061 0.061 0.068
NO + NO (mg/i) 0.310 0.369 0.380 0.420
Arn ionia mg/i) 0.100 0.140 0.140 0.160
ALL VALUES
Secchi disc (inches)
16 30
32 60
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7
B. Biological characteristics:
1 . Phytoplankton -
Sampling Dominant Number
Date Genera per ml
06/27/72 1 . Anabaena 3,891
2. Dinobryon 3,213
3. Melosira 679
4. Cyclotella 317
5. Fragilaria 226
Other genera 1,312
Total 9,638
08/27/72 1. Melosira 795
2. Chlamydomonas 602
3. Cyclotella 265
4. Anabaena 181
5. Navicula 181
Other genera 687
Total 2,711
11/05/72 1. Scenedesmus 1,224
2. Pediastrum 829
3. Flagellates 753
4. Dinobryon 621
5. Anabaena 264
Other genera 885
Total 4,576
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8
2. Chlorophyll a -
(Because of instrumentation problems during the
the following values may be in error by plus or
percent.)
1972 sampling,
minus 20
Sampling
Date
06/26/72
C. Limiting Nutrient Study:
Station
Number
01
02
03
04
05
06
07
01
02
03
04
05
01
02
03
04
05
Chlorophyll a
(pg/l)
5.4
28.8
10.7
5.0
71.5
53.2
118.6
1.9
9.0
2.5
2.4
5.3
1. Autoclaved, filtered, and nutrient spiked -
a. Stations 1, 3, and 4 -
Spike (mg/l )
Control
0.006
0.012
0.024
0.060
0.060
10.0 N
P
P
P
P
P + 10.0 N
Ortho P
Conc. (mg/i )
0.058
0.064
0.070
0.082
0.118
0.118
0.058
Inorganic N
Conc. (mg/i )
0.430
0.430
0.430
0.430
0.430
10. 430
10 .430
Maximum yield
( mg/i-dry wt. )
7.8
7.5
7.9
7.8
7.9
47.2
14.9
08/ 27/72
11/05/72
1.3
1 .4
1 .4
13.5
1.5
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9
b. Stations 2 and 5 -
Ortho P Inorganic N Maximum yield
Spike (mg/i) Conc. (mg/i) Conc. (mg/i) ( mg/i-dry wt. )
Control 0.042 0.319 7.2
0.006 p 0.048 0.319 7.2
0.012 p 0.054 0.319 7.1
0.024 p 0.066 0.319 7.2
0.060 P 0.102 0.319 7.9
0.060 p + 10.0 N 0.102 10.319 44.6
10.0 N 0.042 10.319 15.6
2. Discussion -
The control yields of the assay aiga, Selenastrurri capri-
cornutum , Indicate that the potentiai primary productivity
of Lake Eau Claire was high at the time of sampling. The
assays aiso indicate nitrogen limitation. Note the lack of
a significant increase in yields with the additions of ortho-
phosphate, but with the addition of nitrogen the increases in
yields were significant. The iake data also indicate nitrogen
limitation at the time of sampling (nitrogen to phosphorus
ratios were 8 to 1, and nitrogen iimitation would be expected).
The lake data indicate nitrogen limitation in June (mean
N/P ratio of 11/1) but a borderline phosphorus limitation in
August (mean N/P ratio of 14/i).
D. Trophic Condition:
Survey data and the records of others show that Lake Eau
Claire is eutrophic. Survey limnoiogists noted abundant growths
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10
of rooted aquatic vegetation in bays and along the shoreline, and
Wisconsin records show that periodic chemical treatments to con-
trol algae have been undertaken (Lueschow, 1972).
Of the 46 Wisconsin lakes studied, 31 had less mean total phos-
phorus, 29 had less mean dissolved phosphorus, 34 had less mean
inorganic nitrogen, 34 had greater Secchi disc transparencies, and
30 had less mean chlorophyll a.
Marked depression of dissolved oxygen with depth was noted
at four of the five sampling stations in June, 1972.
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11
V. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Wisconsin National
Guard collected monthly near-surface grab samples from each of the tribu-
tary sites indicated on the map (page vii), except for the high runoff
months of March and May when two samples were collected at most stations.
Sampling was begun in September, 1972, and was completed in August, 1973.
Through an interagency agreement, stream flow estimates for the year
of sampling and a “normalized” or average year were provided by the Wis-
consin District Office of the U.S. Geological Survey for the tributary
sites nearest the lake.
In this report, tributary nutrient loads were determined by using a
modification of a U.S. Geological Survey computor program for calculating
stream loadings*. Nutrient loads for unsanipled “minor tributaries and
immediate drainage” (“ZZ” of U.S.G.S.) were estimated by using the pounds
per square mile per year calculated for Muskrat Creek at station C-i and
multiplying that by the ZZ area in square miles.
The wastewater treatment plants of the City of Thorp and the villages
of Stanley, Boyd, and Fairchild were not sampled during the Survey. The
loads attributed to these sources were estimated at 2.5 lbs P and 7.5 lbs
N/capita/year.
In the following loading tables, the nutrient loads attributed to
the various tributaries do not include the estimated point-source loads.
* See Working Paper No. 1.
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12
* 1970 Census.
** McKersie, et al., 1971.
Pop.*
Served
1 ,465
2,055
578
557
Treatment
Trickling
filter
Act, sludge
Trickling
filter
Ponds
Mean**
Flow (mgd )
1.200
0.230
0.030
0.025
A. Waste Sources:
1. Known municipal -
Name _______
Thorp
Stanley
Boyd
Fairchild
2. Industrial** -
There are six cheese plants and one dairy with individual
waste disposal facilities in the Lake Eau Claire drainage.
Wisconsin records indicate satisfactory land disposal at most
of these sources.
Receiving
Water
N. Fork,
Eau Claire River
Wolf River
Hay Creek
Black Creek
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13
B. Annual Total Phosphorus Loading - Average Year:
1 . Inputs -
lbs P t % of
Source yr total
a. Tributaries (non-point load) -
Eau Claire River 68,490 76.0
Hay Creek 5,500 6.1
Muskrat Creek 2,670 3.0
b. Minor tributaries & immediate
drainage (non-point load) - 1,620 1.8
c. Known municipal SIP’s -
Boyd 1 ,440 1 .6
Stanley 5,140 5.7
Thorp 3,660 4.1
Fairchild 1,390 1.5
d. Septic tanks* - 70 <0.1
e. Industrial - Unknown ? -
f. Direct precipitation** - 170 0.2
Total 90,150 100.0
2. Outputs -
Lake outlet - Eau Claire River 92,080
3. Net annual P loss - 1,930 pounds
* Estimated 90 dwellings, 1 resort, and 1 park on shoreline; see Working
Paper No. 1.
** Estimated; see Working Paper No. 1
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14
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
lbs N I
______ yr _____
Tributaries (non-point load) -
Eau Claire River
Hay Creek
Muskrat Creek
b. Minor tributaries & immediate
drainage (non-point load) -
c. Known municipal SIP’s -
Boyd 0.4
Stanley 1.3
Thorp 0.9
Fairchild 0.4
d. Septic tanks* - 0.2
e. Industrial - Unknown -
f. Direct precipitation** _________ 0.9
Total 100.0
2. Outputs -
Lake outlet - Eau Claire River 1,128,730
3. Net annual N accumulation - 64,430 pounds
Source
a.
% of
total
80.9
6.2
5.5
965,610
73,930
65,810
39,710 3.3
4,340
15,410
10,990
4 ,180
2,430
2
10,770
1 ,l93,180
* Estimated 90 dwellings, 1 resort, 1 park on shoreline; see Working
Paper No. 1.
** Estimated; see Working Paper No. 1
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15
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Eau Claire River 135 1,908
Hay Creek 138 1,853
Muskrat Creek 91 2,231
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 oligotrophic if mor-
phometry permitted. A mesotrophic rate would be considered one
between “dangerous” and “permissible”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
lbs/acr /yr 80.6 loss* 1,067.2 57.6
grams/rn /yr 9.04 - 119.6 6.5
Volle weider loading rates for phosphorus
(g/rn /yr) based on mean depth and mean
hydraulic retention time of Lake Eau Claire:
“Dangerous” (eutrophic rate) 1 .76
“Permissible” (oligotrophic rate) 0.88
* Even though Lake Eau Claire has a short hydraulic retention time, loss of
phosphorus would not be expected, particularly in view of the indicated
nitrogen accumulation. The apparent loss probably was due to insufficient
sampling.
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16
VI. LITERATURE REVIEWED
Anonymous, 1972. Wisconsin lakes. Pubi. 218-72, Dept. of Natural
Resources, Madison.
Ball, Joseph, 1974. Personal communication (volume of Lake Eau
Claire). Dept. of Natural Resources, Madison.
Lueschow, Lloyd A., 1972. Biology and control of selected aquatic
nuisances in recreational waters. Techn. Bull. #57, Dept. of
Natural Resources, Madison.
McKersie, Jerome R., Robert M. Krill, Charles Kozel, and Danny J.
Ryan; 1971. Lower Chippewa River pollution investigation survey.
Dept. of Natural Resources, Madison.
Sather, LaVerne M., and C. W. Threinen, 1964. Surface water resources
of Eau Claire County. Conservation Dept., Madison.
Vollenweider, Richard A., (in press). Input-output models. Schweiz.
A. Hydrol.
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17
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
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TRIBUTARY FLOW INFORMATION FOR WISCONSIN
9/30/74
LAKE CODE 5515
LAKE EAU CLAIRE
TOTAL DRAINAGE AREA OF LAKE 595.00
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB—DRAINAGE AREAS
TRIBUTARY MONTH YEAR
MEAN FLOW DAY
FLOW DAY
FLOW DAY FLOW
9 72 1100.00
10 72 1100.00
11 7. 1100.00
12 72 200.00
I 73 400.00
2 73 160.00
3 73 3100.00
4 73 1300.00
5 73 2600.00
6 73 370.00
7 73 94.00
8 73 100.00
9 72 1000.00
10 72 890.00
11 72 920.00
1? 72 170.00
1 73 340.00
2 71 130.00
1 73 2600.00
4 73 1100.00
73 2300.00
6 73 310.00
7 73 77.00
8 73 86.00
23 840.00
15 610.00
9 260.00
21 ‘.80.00
10 160.00
10 3300.00
14 580.00
2 8800.00
17 220.00
18 75.00
12 100.00
23 740.00
15 510.00
9 210.00
21 400.00
10 130.00
10 2800.00
14 500.00
2 7600.00
17 190.00
18 62.00
12 86.00
SUP—DRAiNAGE
NORMALIZED
FLOWS
TRIBUTARY AREA JAN FEB MAR APR MAY JUN
JUL
AUG
551 5A1
595.00
88.00
100.00
820.00
1300.00
680.00
710.00
250.00
260.00
230.00
220.00
310.00
160.00
427.72
5515A2
506.00
64.00
76.00
700.00
1200.00
5 O .0O
630.00
220.00
220.00
200.00
190.00
270.00
120.00
373 57
551581
19.90
3.50
3.50
44.00
140.00
34.00
31.00
12.00
9.00
11.00
11.00
17.00
6.20
26.79
551 5C1
29.50
2.40
2.40
32.00
120.00
24.00
22.00
8.20
6.20
7.60
7.70
13.00
4.30
20.75
SS I SZZ
19.60
1.50
1.50
20.00
86.00
35.00
13.00
5.00
3.80
4.70
4.80
8.00
2.70
13.78
SEP OCT NOV
MEAN MONTHLY FLOWS AND DAILY FLOWS
DEC MEAN
SUMMARY
595.00
TOTAL
FLOW
IN
5217.98
595.00
TOTAL
FLOW
OUT
=
5128.00
5515A1
5515A2
31 1100.00
30 1100.00
31 980.00
30 960.00
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TRIBUTARY FLOW INFORMATION FOR WISCONSIN 9/30/74
LA (E CODE 5515 LAKE EAU CLAIRE
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
5515B1 9 72 140.00 23 100.00
10 72 58.00 15 34.00
11 72 60.00
12 72 8.10 9 10.00
1 73 16.00 21 20.00
2 73 6.40 10 6.20
3 73 170.00 10 180.00 31 63.00
4 73 130.00 14 58.00
5 73 260.00 2 900.00 30 110.00
6 73 15.00 17 9.00
7 73 3.80 18 2.90
8 73 4.10 12 4.10
55 15C 1 9 72 110.00 23 84.00
10 72 42.00 15 25.00
11 7 43.00
12 72 5.60 9 7.20
1 73 11.00 21 14.00
2 73 4.40 10 4.20
3 73 120.00 10 130.00 31 45.00
4 73 98.00 14 44.00
5 73 210.00 2 690.00 30 86.00
6 73 11.00 17 6.30
7 73 2.60 18 2.00
8 73 2.90 12 2.90
S S15ZZ 9 7? 83.00 23 62.00
10 72 27.00 15 16.00
11 72 28.00
12 72 3.50 9 4.40
1 73 6.80 21 8.20
2 73 2.60 10 2.60
3 73 78.00 10 81.00 31 29.00
4 73 69.00 14 31.00
5 73 150.00 2 480.00 30 61.00
6 73 6.60 17 3.90
7 73 1.60 18 1.30
8 73 1.80 12 1.80
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APPENDIX B
PHYSICAL and CHEMICAL DATA
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STORET RETRIEVAL DATE 74/09/30
551501
44 45 42.0 091 07 48.0
EAt) CLAIRE LAKE
55 WISCONSIN
I IEPALES
3
2111202
0020 FEET DEPTI-t
DATE
F ROM
TO
7?/ 06/26
72/OR/?7
72/11/05
TIME DEPTH
OF
DAY FEET
14 55 0000
16 18 0000
11 35 0000
32217
CHL PPHYL
A
UG/L
5.4J
1 .9J
1 • 3J
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
WATER
DO
TRANSP
CNDUCTVY
PH
T ALK
NO2 NO3
NH3—N
PHOS-TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICRONHO
SU
MG/L
MG/L
MG/L
MG/L P
MG/L P
7?/06/26
14 55 0000
23.2
16.4
30
90
9.40
24
0.060
0.080
0.069
0.031
14 55 0005
21.0
13.6
14 55 0010
19.0
4.8
14 55 0015
18.9
2.2
90
7.30
30
0.090
0.570
0.080
0.047
14 55 0018
18.9
1.4
110
7.00
33
0.100
0.810
0.092
0.046
72/08/27
16 18 0000
85
6.90
31
0.100
0.440
0.074
0.040
16 18 0004
20.6
5.6
81
6.90
31
0.080
0.420
0.088
0.035
16 18 0011
20.1
5.7
83
6.80
32
0.090
0.450
0.104
0.037
72/1.1/05
ii 35 0000
16
80
7.00
15
0.390
0.140
0.125
0.061
1.1 35 0004
4.6
9.6
80
7.00
14
0.390
0.140
0.118
0.060
11 35 0012
4.6
9.6
78
7.00
14
0.380
0.140
0.118
0.062
11 35 0017
4.6
9.6
78
7.00
14
0.340
0.150
0.115
0.064
J VALUr ,
-------
STORET RETRIEVAL DATE 74/09/30
551502
44 45 48.0 091 05 ‘.8.0
LAKE EAU CLAIRE
55 WISCONSIN
1IEPALES 2111202
3 0009 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTVV PH T ALK N026N03 NH3—N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES MICRONHO SU MG/I MG/L MG/L MG/I P MG/L P
72/06/26 15 20 0000 22.5 12.9 30 85 9.00 25 0.070 0.100 0.054 0.030
15 20 0005 20.0 8.4
- 15 20 0007 19.0 6.2 85 7.50 26 0.070 0.260 0.085 0.038
72/08/27 16 42 0000 33 75 7.00 29 0.140 0.240 0.078 0.031
- 16 42 0004 21.0 8.1 72 7.00 29 0.150 0.340 0.086 0.038
7?/11/05 12 45 0000 17 80 7.00 16 0.320 0.160 0.101 0.058
12 45 0004 4.2 10.6 80 7.10 14 0.330 0.150 0.105 0.058
32217
DATE TIME DEPTH CHLPPHYL
FROM OF A
TO DAY FEET UG/I
7’/06/26 15 20 0000 22.8J
72/08/27 16 42 0000 9.OJ
72/11/05 I? 45 0000 1.4J
J VALU’ K\JQ N TO I’ R O’
-------
STORET RETRIEVAL DATE 74/09/30
DATE
FROM
TO
00010
WATER
TEMP
CENT
00300 00077
DO TRANSP
SE CCH I
P4G/L PJCHES
00094
CNDUCT V V
FIELD
MICROMHO
551503
44 45 30.0 091 07 42.0
EAU CLAIRE LAKE
55 WISCONSIN
1 IEPALES
3
00630
P4O2 .NO3
N—TOTAL
P4 G/L
00610
NH3-N
TOTAL
MG/I
DATE
F ROM
TO
72/06/27
72/08/27
7/1 1/OS
TIME DEPTH
OF
DAY FEET
13 35 0000
16 30 0000
12 15 0000
32217
CHLRPHYL
A
UG/L
10 • 7J
2 • SJ
1 .4J
TIME DEPTH
OF
DAY FEET
72/06/27 13 35 0000
13 35 0007
- 13 35 0017
72/08/27 16 30 0000
16 30 0004
16 30 0015
72/11/05 12 15 0000
12 15 0004
1? 15 0015
2111202
0019 FEET DEPTH
22.0
19.5
18.0
21.6
19.7
4.6
4.6
11.3
6.2
0.2
6.8
7.0
10.4
10.4
42
33
16
00400 00410
PH TALK
CACO3
SU P4G/L
7.30
7.20
6.95
7.00
7.00
6.80
7.00
7.10
7.10
85
87
105
83
80
80
80
80
80
00665 00666
PHOS-TOT PHOS—QIS
MG/L P MG/L P
26 0.040
29 0.060
33 0.090
33 0.100
32 0.080
32 0.090
15 0.410
14 0.420
14 0.420
0.150
0.330
1.200
0.390
0.370
0.420
0 • 150
0 • 150
0.140
0.048
0.0 65
0.163
0.089
0.090
0.090
0.126
0.129
0.134
0.0 24
0.033
0.077
0.0 39
0.036
0.038
0.0 64
0.067
0.066
J V \Ll)’- c ‘j( ). 4 TQ ‘ 4 r J’j
-------
STORET RETRIEVAL DATE 74/09/30
551504
44 45 36.0 091 08 12.0
EAU CLAIRE LAKE
55 WISCONSIN
IIEPALES 2111202
3 0019 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY el-f 7 ALK N02 MO3 Nl -13—N PHOS—TOT PI-IOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES MICRONHO Sti MG/L MG/L MG/L NG/L P MG/L P
72/06/27 14 15 0000 20.6 4.6 60 87 7.16 3fl 0.040 0.360 0.055 0.038
14 15 0005 19.1 2.3 90 7.00 29 0.040 0.260 0.048 0.028
14 15 0017 18.3 0.3 100 6.85 35 0.030 0.610 0.058 0.032
72/08/27 16 05 0000 33 85 6.90 31 0.090 0.450 0.070 0.033
16 05 0004 20.9 5.7 85 6.90 31 0.080 0.440 0.038 0.033
16 05 0015 20.2 5.5 87 6.90 32 0.080 0.530 0.101 0.042
7 2/lI/OS 11 55 0000 18 80 6.90 14 0.380 0.140 0.126 0.065
11 55 0004 4.6 10.4 80 7.00 12 0.380 0.120 0.119 0.062
II 55 0014 4.6 10.4 82 6.90 12 0.380 0.140 0.118 0.060
11 55 0018 4.6 10.4 80 7.00 13 0.380 0.130 0.115 0.062
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET (JG/L
72/06/27 14 15 0000 5.OJ
77/08/27 16 05 0000 2.4J
72/11/05 11 55 0000 13. SJ
j V L1J cr.iOWh I) i’ a FP’
-------
STORET RETRIEVAL DATE 74/09/30
32217
DEPTH CHLRPHYL
A
FEET UG/L
551505
44 45 48.0 091 06 54.0
EAU CLAIRE LAKE
55 WISCONSIN
1 1EPALES
3
2111202
0012 FEET DEPTH
00010
00300
00077
00094
00400
PHOS-TOT
PHOS-DIS
DATE
TIME
DEPTH
WATER
DO
TRANSP
CNOUCTVY
PH
T
ALK
NO2&N03
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
HG/I P
MG/L P
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMHO
SU
MG/L
HG/L
72/06/27
15 00 0000
24.8
)4.4
30
100
9.63
20
0.050
0.060
0.080
0.074
0.071
0.035
0.036
•
15 00 0009
‘2.3
11.4
87
9.2?
29
0.050
0.440
0.079
0.035
7?/OR/27
16 55 0000
33
90
7.00
34
0.100
0.410
0.083
0.038
16 55 0004
21.8
6.4
90
6.90
33
0.090
0.380
0.087
0.035
16 55 0009
21.4
6.4
80
7.00
32
0.080
0.150
0.097
0.053
72/11/05
12 30 0000
17
80
6.50
14
0.140
0.104
0.054
12 30 0004
4.7
10.6
75
6.10
14
DATE
FROM
TO
TIME
OF
DAY
7?F06/27
IS
00
0000
71.5J
72/OR/27
16
55
0000
5.3J
J VALIJ- T (1’ 1N F) - - I ‘. EP
-------
STORET RETRIEVAL DATE 74/09/30
551506
44 46 00.0 091 05 24.0
fAil CLAIRE LAKE
55 WISCONSiN
1IEPALES 2)11202
3 0004 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTvY PH T ALK N02&N03 NH3—N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FFET CENT NG/L INCHES HICROMHO SI) MG/L MG/I MG/L P4G/L P HG/L P
7?/06/27 15 30 0000 25.3 12.1 36 87 9.28 22 0.020 0.030 0.062 0.024
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UGh
7?/06/27 15 30 0000 53.2J
J VALLJF P NOwN TO I i EP O-
-------
STORET RETRIEVAL DATE 74/09/30
551507
44 45 42.0 091 05 24.0
(AU CLAIRE LAI
-------
APPENDIX C
TRIBUTARY DATA
-------
STOPET PETRIEVAL DATE 74/10/02
SS1SA I
4’-. ‘+5 00.0 091 0
EA’J CLAiRE PIVLLP
55 1 D CAOOTT
0/LAKE EAJ CLA1r E
ST - Wi 27 i)G c—, M
1 1FPALES
4
LS5515A1
30 • 0
N OF AUGUSTA
2111204
0000 FEET DEPTH
00630
O062
00610
00671
0(,665
DATE
TIME
DEPTH
N02&NO3
TOT KJEL
NH3—N
PhIOS—’)IS
PHOS—TOT
FPOM
OF
N—TOTAL
N
TOTAL
OPTHO
TO
DAY
FEET
H1 /L
-lG/L
MG/L
M&/L P
Mr,/L P
7?/09/?3
11
10
0.146
1.170
0.135
0.023
,.100
72/10/15
0.195
1.050
0.166
0.027
0.100
7 2/I l/ i l
0.??0
1. L?
:1.063
0.037
0.095
7?/1 /09
0.2FjO
0.540
0.054
0,029
0.060
73/01/21
09
‘-‘5
0.390
0.°55
0.13?
0.039
0.065
73/02/10
0.410
fl. 30
0.140
0.046
0.075
71/03/10
10
45
0.410
?. 00
0.790
0.13?
0.2-0
71/03/31
10
00
0.19 3
0.600
0.011
0.0??
0.050
71/0”/14
0.100
1.200
0.044
0.0??
0.045
71/05/02
1?
40
0.10)
1.300
0.1?0
0.029
0.290
71/05/30
13
00
0.075
1.000
0,01?
0.027
0.0-5
73/06/17
10
00
0.013
0.9 ’ 0
fl •Ø79
0.110
73/07/is
17
00
0.017
0.460
0.044
0.013
0.040
71/0 /12
0.400
0.R60
0.07?
0.067
0.160
-------
STORET RETRIEVAL DAtE 76/10/02
551542 LS5 S1SA2
44 45 00.0 091 03 30.0
EA’J CLA1 E R1Vf R
55 15 OSSEO
I/LAKE EAU CLAIPE
Co HWY G ROG NE OF AUGUSTA
I IFPALES 2111204
0000 FEET DEPTH
00A30 00625 00610 00611 006
DATE TIME DEPTH NO? NO3 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
FROM OF N-TOTAL N TOTAL UPTHO
TO DAY FErT MG/L MG/L MG/L MG/L P MG/L P
72/09/23 11 15 0.275 ). 00 0.172 0.075 0.1 )0
7?/I0/I5 0.210 1.500 0.110 0.028 0.0 T h
7?/11/1l 0.L7’ 1.050 0.060 0.033 0.O 9
73/01/21 10 20 0.490 1.260 0.252 0.060 0.115
73/0?/10 0.410 0.680 0.13? 0.058 O.07S
71/03/10 11 15 0.357 I.60D 0.420 0.105 0.200
73/03/31 10 30 0.160 1.320 0.025 0.026 0.045
73/04/14 0.097 1.100 0.063 0.OP 0.040
71/05/0? 13 00 0. 70 1.?30 0.088 0.055 0.195
13/05/30 10 45 0.016 1.000 0.030 0.015 0.045
73/06/17 11 00 0.048 1.100 0.046 0.015 0.145
71/07/18 17 30 0.010K 0.400 v.019 0.011 0.040
73/OR/I? 0.390 0.630 0.039 0.063 0.115
K VAL(J - ‘? JOWN TO 1E LESS
TIAN INDICATtO
-------
STOPET PETPIEVAL DATe 7”/10/02
SS15 1 L55515S1
44 7 00.0 un as jO.o
HAY CAEEP(
55 15 CADOTT
T/LAKE EAU CLA1 E
Co HWY NN XING UPSTREAM OF LAKE
I 1FPALES 2111204
6 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TTWE DEPTH NO2 NO3 TOT KJFL N i3—N PHOS —r)I5 PHO —TflT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L ‘16/L M ’/L MG/L P MG/L
72/09/23 1? 15 0.142 1.150 0.170 0.054 0.l3
72/10 ,15 0.117 o.qoo 0.075 0.03? 0.07
72/Il/li 0.270 0.’ 40 0.031 0.042 0.075
72/ 12/09 0.?10 0.100 0.lcJ O
73/01/21 11 15 0.620 1.400 0.379 0.06R u.135
73/0?/10 0.R 0 0.500 0.10 0.056 0.0
71/03/10 1? 00 0.400 1.900 0.590 0.13 0.230
73/03/31 1? 30 0.4q 0 0. 0 0.032 0.099 0.150
71/05/0? 0.?30 ?.300 0.115 0.060 0.1 5
73/05/30 1? 00 C.052 1.050 O.C34 0.05 0.105
71/06/17 16 00 0.200 1.260 0.016 0.O0 K 0.210
71/07/15 15 15 0.065 O.4 30 0.029 0.059 0.100
73/05/1? 0.4 0 1.150 0.159 0.063 0.115
K V LiJ \JOAl j -u LE ’
T- .9 Ii’)JCATEU)
-------
ST3PEI ‘ ETRIEVAL DATE 74/10/02
551582 L55515B2
‘.4 55 00.0 091 02 00.0
r-fAq CREEK
55 15 CAOOTT
T/LAKE EAU CLAIPE.
C) -IWY 0 AIN( BELO
I 1EPALFS
4
HOVE) STP
2111204
0000 FEET DEPTH
00630
006?5
00610
00671
00665
)ATE
TI’4E
DEPTH
NO? .NO3
TOT KJEL
‘ 1I-43-N
PHOS—OTS
PHOS—TOT
FROM
OF
“i—TOTAL
N
TOTAL
OR 1110
TO
DAY
FEET
MG/L
MG/L
Mr,/L
MG/L P
MG/L D
7?/0 /?3
1?
30
0.?47
1.150
0.157
0.110
0.2 50
7?/I0/15
0.720
1.050
0.081
0.069
0.154
7?/1l/1t
0.780
1.600
0.120
0.126
0.160
7?/)2/0
0.750
0.540
0.110
0.035
0.060
73/01/21
j7
iS
1.300
3•7 f ))
1.020
0.300
0.430
73/03/10
1?
30
0.650
?.8 00
0.920
0.260
0.315
73/33/31
1?
45
0.115
0.520
0.019
0.03
0.060
71/04/14
0.580
6.000
0.’70
0.16R
0.510
73/05/30
I?
30
0.05?
0.790
0.01’-
0.063
0.100
73/06/17
1?
15
0.073
1. 800
0.0Sf)
0. 5 20
73/07/18
18
10
0.060
0.690
0.058
0.147
0.??0
-------
STD ET ETPTEVAL DATE 74/10/02
‘ 3i5C1 LS5SlSC I
44 47 30.0 091 03 30.0
MJS’(R T CREEK
15 CADOTT
T/LAKE EALI CLAIPL
Co HWY’ N4” J X1N W OF G’ ANDv!EW SCHOOL
I IEPALES 2111204
4 0000 FEET DEPTH
00630 0062 5 00610 00671 00665
r)ATE TPAE DEPTH rJO2 .NO3 ior KJFL NI-43—N PHOS—DIS PhO’ ,—TOT
FI O’ OF NTOTAL N TOTAL ORTt-1O
TO DAY FEET MG/L 1G/L Mfl/L M(,/L MG/L P
7?/09/23 11 55 0.010’c 1.100 0.005i 0.O2 0.06 9
72/10/15 0. OH7 0.753 0.110 0.016 0.0 ,0
7?/1 2/09 0.170 1.150 O.13 0.023 0.05?
71/0t/?1 10 45 0.370 1.6 0 .?20 0.039 0.09?
73/02/10 0.270 0.720 0.160 0.02R 0.054
73/03/10 1) 45 0.170 1.C50 0.168 0.03 0.065
73/03/31 ii 30 0.038 1.47’) 0.231 0.015 0.035
73/0 /02 14 00 ( ‘.063 2.600 0.16R 0.020 0.055
71/05/30 12 45 0.0 lb 1.050 0.034 0.021 0.045
73/06/17 II 30 0.260 1.700 0.054 0.125
71/07/1f4 1R 00 0.01 0.6RO 0.025 0.O?2 0. OS O
73/0F /12 0.430 4.500 0.730 0.066
V’ LU \ fl4\I TO LESS
rHAN I” DICt .FFD
------- |