U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAI€POYGAN
WINNEBAGO AND WAUSHARA COUNTIES
WISCONSIN
EPA REGION V
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
•& GPO 697.032
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REPORT
ON
LAKEPOYGAN
WINNEBAGO AND WAUSHARA COUNTIES
WISCONSIN
EPA REGION V
WORKING PAPER No, 45
WITH THE COOPERATION OF THE
WISCONSIN DEPARTMENT OF NATURAL RESOURCES
AND THE
WISCONSIN NATIONAL GUARD
NOVEMBER, 1974
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1
CONTENTS
Page
Foreword ii
List of Wisconsin Study Lakes iv, v
Lake and Drainage Area Map vi
Sections
I. Conclusions 1
II. Introduction 3
III. Lake and Drainage Basin Characteristics 4
IV. Lake Water Quality Suni’nary 5
V. Nutrient Loadings 10
VI. Literature Reviewed 15
VII. Appendices 16
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration comitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water lakes and
reservoi rs.
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 [ g303(c)], 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, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Wisconsin Department of
Natural Resources for professional involvement and to the Wisconsin
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
Geneva Walworth
Grand Green Lake
Green Green Lake
Kegonsa Dane
Koshkonong Jefferson, Rock, Dane
Lac La Belle Waukesha
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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LAKE POYGAN
® Tributary Sampling Site
X Lake Sampling Site
/‘ Direct Drainage Area
0
Limits
5 Mi.
Map Location
Winckester
(I
I
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LAKE POYGAN
STORET NO. 5538
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate Lake Poygan is eutrophic. This lake is
listed in “Problem Lakes of the United States” (Ketelle and
Uttormark, 1971).
B. Rate-Limiting Nutrient:
Algal assay results indicate Lake Poygan was nitrogen limited
at the time the sample was collected. However, a significant loss
of nitrogen occurred in the sample, and the results are not con-
sidered reliable (see discussion, pages 8 and 9).
C. Nutrient Controllability:
1. Point sources—-During the sampling year, Lake Poygan
received a phosphorus load at a rate well in excess of that
proposed by Vollenweider (in press) as “dangerous”; i.e., a
eutrophic rate (see page 14). Of that load, it is estimated
that the point sources included within the Survey limit* contri-
buted less than 1%. If only these point sources were considered,
it would be concluded that point-source phosphorus control would
not significantly improve the trophic condition of Lake Poygan.
* See Working Paper No. 1, “Survey Methods”.
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2
However, there are many point sources of phosphorus in the
drainage beyond the 25-mile limit of the Survey*, and a more
detailed study is needed to assess the effectiveness of phos-
phorus control in the drainage.
2. Non-point sources (see page 14)--Except for the Pine
River, the phosphorus exports of the streams tributary to Lake
Poygan were quite high and are indicative of the unmeasured
point sources noted above (assuming the export of the Pine
River is representative of non-point sources in the Wolf River
drainage).
Whether effective control of the phosphorus now reaching
Lake Poygan can be achieved is questionable in view of the
rather high drainage area to lake area ratio of 226 to 1.
With zero point-source contributions, the mean non—point phos-
phorus export of the tributaries to the lake would have to be
reduced to about 37 lbs/m1 2 /yr to achieve a loading rate just
equal to Vollenweider’s eutrophic rate.
*JvlcKersje, et al., 1971.
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II. INTRODUCTION
Lake Poygan is the terminus of the Wolf River drainage in northeastern
Wisconsin. The entire drainage is in a glaciated part of the State.
Land use in the drainage is predominately agricultural, and dairy plants
and canneries are common in the southern part of the drainage (McKersie,
et al., op. cit.).
The primary uses of Lake Poygan are recreational, including swimming,
boating, and fishing. Game fish present are muskellunge, northern pike,
walleyes, largemouth bass, and panfish (Anonymous, 1972).
Public access is provided, and commercial facilities offer services.
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4
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry :
1. Surface area: 10,992 acres.
2. Mean depth: 7 feet.
3. Maximum depth: 11 feet.
4. Volume: 76,944 acre/ft.
5. Mean hydraulic retention time: 13 days.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name
Wolf River
Willow Creek
Pine River
Rat River
Minor tributaries &
immediate drainage -
Totals
2. Outlet -
Wolf River
C. Precipitation***:
1. Year of sampling: 41.1 inches.
2. Mean annual: 28.4 inches.
Drainage area* Mean flow*
3,440.0 mi 2,599.2 cfs
114.0 m1 2 91.9 cfs
88.4 mi 2 72.5 cfs
73.6 mi 60.2 cfs
166.8 mi 2 147.9 cfs
3,882.8 mi 2 2,971.7 cfs
3,900.0 fflj 2 ** 2,971.7 cfs**
t Ball, 1973.
* 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%.
** Includes area of lake; outflow adjusted to equal sum of inflows.
See Working Paper No. 1.
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5
IV. LAKE WATER QUALITY SUMMARY
Lake Poygan 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 generally from two depths at each station (see map, page
vi). During each visit, a single depth-integrated (near bottom to surface)
sample was composited from the 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 6 feet at station
1 , 4 feet at station 2, and 5 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 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
(11/08/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 6.0 6.1 6.2 6.2
Dissolved oxygen (mg/i) 10.4 10.6 10.4 10.9
Conductivity (pmhos) 320 327 325 335
pH (units) 7.7 7.7 7.7 7.7
Alkalinity (mg/i) 135 137 137 139
Total P (mg/i) 0.051 0.068 0.071 0.080
Dissolved P (mg/l) 0.025 0.035 0.041 0.043
NO + NO (mg/i) 0.350 0.412 0.450 0.460
Am onia mg/1) 0.060 0.066 0.070 0.070
ALL VALUES
Secchi disc (inches) 16 19 18 24
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7
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
06/22/72 1. Melosira 3,333
2. Anabaena 2,536
3. Cyclotella 2,391
4. Cryptomonas 1,268
5. Dinobryon 1,196
Other genera 1,124
Total 11,848
08/21/72 1. Anabaena 7,826
2. Melosira 6,848
3. Nitzschia 1,014
4. Fragilaria 870
5. Cyclotella 399
Other genera 1,376
Total 18,333
11/08/72 1. Melosira 1,181
2. Cyclotella 253
3. Raphidiopsis 205
4. Dinobryon 193
5. Navicula 144
Other genera 928
Total 2,904
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8
Sampling
Date
06/22 / 72
08/21/72
Stat I on
Number
01
02
03
01
02
03
01
02
03
1. Autoclaved, filtered, and nutrient spiked -
Chlorophyll -
(pg/i)
26.1
18.3
14.2
27.9
36.3
24.9
11.9
5.6
9.7
Spike (mg/i )
Ortho P
Conc. (mg/i )
Inorganic N
Conc. (mg/i )
Maximum yield
( mg/i—dry wt. )
was collected.
The results also indicate the lake was nitro-
2. Chlorophyll a -
(Because of instrumentation problems during the 1972 sampling,
the following values may be in error by plus or minus 20 percent.)
11/08/72
C. Limiting Nutrient Study:
Control
0.006
0.012
0.024
0.060
0.060
10.0 N
P
P
P
P
P + 10.0 N
0.035
0.390
8.9
0.041
0.390
9.2
0.047
0.390
9.8
0.059
0.390
9.3
0.095
0.390
9.3
0.095
10.390
44.9
0.035
10.390
13.2
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum , indicates that the potential primary productivity
of Lake Poygan was relatively high at the time the sample
gen limited. However, there was a significant nitrogen loss
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9
(ca 90 Mg/i) in the sample between the time of collection
and the time the assay was begun. Had this loss not occurred,
it is quite likely the sample would have been phosphorus lim-
ited (the lake data indicate a nitrogen/phosphorus ratio of
14/1; i.e., phosphorus limitation would be expected).
The lake data indicate that Lake Poygan was nitrogen lim-
ited in June and August. The mean N/P ratios were 8/1 and 5/1
respectively, at those times.
D. Trophic Condition:
Survey data indicate Lake Poygan is eutrophic. Of the 46
Wisconsin lakes studied, 26 had less mean total phosphorus, 20
had less mean inorganic nitrogen, 43 had greater Secchi disc
transparency, and 31 had less mean chlorophyll a.
Survey limnologists noted algal blooms in progress in June
and in August of 1972.
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10
V. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Wisconsin National
Guard collected a monthly near-surface grab sample from each of the
tributary sites indicated on the map (page vi), except for the high run-
off months of April and May when two samples were collected. 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 Wisconsin 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 pro-
gram for calculating stream loadings*. Nutrient loadings for unsampled
“minor tributaries and immediate drainage” (“ZZ” of U.S.G.S.) were
calculated using the mean concentrations in the Pine River at station
C-2 and the mean ZZ flow.
None of the waste sources listed in the following table were sampled.
Loads attributed to the communities are estimates (2.5 lbs P and 9.4 lbs
N/capita/year*) and are based on reports of failing septic tank systems.
Stream loads do not include community loads.
As far as is known, the dairy plants listed do not contribute nutrients
to the drainage.
* See Working Paper No. 1.
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11
A. Waste Sources:
1. Known community* -
Pop. Mean Receiving
Name Served** Treatment Flow (mgd) Water
Poy Sippi 450 Septic tanks 7 Pine River
SD
Fremont 330 Septic tanks ? Wolf River
Winchester 665 Septic tanks ? Rat River
N. Lake 300 Septic tanks ? Lake Poygan
Poygan
SD #1
2. Industrial* -
Mean Receiving
Name Product Treatment Flow (mgd) Water
Silver- cheese land 0.0125* Wolf River (7)
field disposal
Cheese Co.,
Fremont
Daisy cheese land ? Pine River (?)
Dairy Co., disposal
Poy Sippi
* McKersie, et al., 1971.
** Anonymous, 1971.
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12
B. Annual Total Phosphorus Loading — Average Year:
1. Inputs -
lbs P/ % of
Source yr total
a. Tributaries (non-point load) —
Wolf River 484,090 88.9
Willow Creek 15,110 2.8
Pine River 4,950 0.9
Rat River 22,050 4.1
b. Minor tributaries & immediate
drainage (non—point load) — 11,940 2.2
c. Known community systems -
Poy Sippi 1,120 0.2
Fremont 820 0.1
Winchester 1 ,660 0.3
N. Lake Poygan SD #1 750 0.1
d. Septic tanks* - 170 <0.1
e. Known industrial — None - -
f. Direct precipitation** - 1,710 0.3
Total 544,370 100.0
2. Outputs -
Lake outlet - Wolf River
(inlet to L. Butte des Morts) 527,330
3. Net annual P accumulation - 17,040 lbs.
* Estimated 270 dwelling on lakeshore; see Working Paper No. 1.
** See Working Paper No. 1.
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13
Tributaries (non-point load) -
Wolf River
Willow Creek
Pine River
Rat River
b. Minor tributaries & immediate
drainage (non-point load) - 580,860
c. Known community systems -
Poy Sippi SD 4,230
Fremont 3,100
Winchester 6,250
N. Lake Poygan SD #1 2,820
d. Septic tanks* - 6,340
e. Known industrial - None
f. Direct precipltation** -
105,900
9,241 ,270
2. Outputs -
Lake outlet - Wolf River
(inlet to L. Butte des Morts) 9,268,300
3. Net annual N loss — 27,030 lbs.
* Estimated 270 dwellings on lakeshore; see Working Paper No. 1.
** See Working Paper No. 1.
C. Annual Total Nitrogen Loading - Average Year:
1 . Inputs —
Source
a.
lbs NI
yr
7,619,760
338,350
328,100
245,560
% of
total
82.5
3.7
3.6
2.7
6.3
<0.1
<0.1
<0.1
<0.1
0.1
1.1
100.0
Total
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14
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Wolf River 141 2,215
Willow Creek 133 2,970
Pine River 56 3,712
Rat River 300 3,336
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 Accumual ted
lbs/acr /yr 49.5 1.6 840.1 loss*
grams/rn /yr 5.55 0.17 94.2 —
Vo1le weider loading rates for phosphorus
(g/m /yr) based on mean depth and mean
hydraulic retention time of Lake Poygan:
“Dangerous” (eutrophic rate) 1.48
“Permissible” (oligotrophic rate) 0.74
* There was an apparent loss of nitrogen during the sampling year. This may
have been due to nitrogen fixation in the lake, solubilization of previously
sedimented nitrogen, recharge with nitrogen-rich ground water, unknown and
unsampled point sources discharging directly to the lake, or underestimation
of the nitrogen loads from the point sources. Whatever, the cause, a similar
loss has occurred at Shagawa Lake, Minnesota, which has been intensively
studied by EPA’s National Eutrophication Research and Lake Restoration Branch.
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15
VI. LITERATURE REVIEWED
Anonymous, 1971. Inventory of municipal waste facilities. Pubi.
OWP—1, Vol. 5, EPA, Washington.
Anonymous, 1972. Wisconsin lakes. Pubi. 218-72, Dept. of Natural
Resources, Madison.
Ball, Joseph R., 1973. Personal communication (morphometry of Lake
Poygan). Dept. of Natural Resources, Madison.
Ketelle, Martha J., and Paul D. Uttormark, 1971. Problem lakes in
the United States. EPA Water Poll. Contr. Res. Series, Proj.
16010 EHR.
Lueschow, Lloyd A., 1972. Biology and control of selected aquatic
nuisances in recreational waters. Tech. Bull, #57, Dept. of
Natural Resources, Madison.
McKersie, Jerome R., Robert M. Krill, James L. Lissack, and Ronald K.
Krueger, 1971. Wolf River pollution investigation survey. Dept.
of Natural Resources, Madison.
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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TRIBUTARy FLOw INFORMATION FOR WISCONSIN
9/30/74
LAKE CODE 5538
LAKE POYGAN
TOTAL DRAINAGE AREA OF LAKE 3900.00
TOTAL DRAINAGE AREA OF LAKE = 3900.00
SUM OF SUB—DRAINAGE AREAS = 3900.00
MEAN MONTMLY FLOPS AND DAILY FLOWS
TOTAL FLOW IN = 35662.00
TOTAL FLOW OUT = 34520.00
TRIBUTARY MONTH
YEAR MEAN FLOW DAY
FLOW DAY FLOW DAY
FLOW
9 72 3800.00
10 72 5400.00
I I 72 4900.00
1? 72 3000.00
73 3900.00
2 73 3100.00
3 73 11000.00
4 73 9700.00
5 73 11000.00
6 73 7100.00
7 73 2500.00
8 73 1900.00
9 72 3000.00
10 72 4600.00
11 72 3700.00
12 72 2400.00
I 73 2900.00
2 73 2300.00
3 73 10000.00
4 73 8600.00
5 73 9900.00
6 73 6500.00
7 73 2400.00
8 73 1900.00
23 3000.00
15 4900.00
12 5000.00
10 2800.00
11 4000.00
11 14000.00
1 9400.00
6 12000.00
26 4400.00
14 2300.00
11 2100.00
23 2100.00
14 4400.00
1? 4300.00
10 2500.00
11 2500.00
11 15e00.00
1 7200.00
6 1100.00
26 4000.00
14 2200.00
11 2000.00
8000.00
10000.00
SU8—DRAI MGE
NOMMALIZED
FLOWS
TRIBUTARY ARFA JAN FEB MAP APR MAY JUN
JUL
AUG SEP OCT NOV DEC MEAN
5538A1
3900.00
1600.00
1800.00
3200.00
7100.00
4400.00
3700.00
2100.00
1900.00
21V)0.O0
2220.00
2400.00
2000.00
2875.12
553 8A3
3440.00
1400.00
I OO.00
3000.00
6200.00
4000.00
3200.00
2100.00
1800.00
2100.00
1900.00
2200.00
1700.00
2599.18
553R I
114.00
56.00
62.00
180.00
140.00
100.00
90.00
70.00
59.00
67.00
96.00
100.00
81.00
91.91
5538C1
88.40
44.00
48.00
150.00
100.00
78.00
73.00
52.00
46.00
52.00
77.00
83.00
65.00
72.48
scDRoI
73.60
37.00
40.00
120.00
85.00
64.00
60.00
43.00
38.00
43.00
66.00
71.00
54.00
60.20
553 8 1Z
184.00
89.00
97.00
270.00
240.00
170.00
160.00
110.00
96.00
110.00
150.00
160.00
120.00
147.87
SUMMARY
5538A 1
5538A3
14
20
14 7200.00
20 8200.00
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TRIBUTARY FLOW INFORMATION FOR WISCONSIN 9/30/74
LAKE CODE 5538 LAKE POYGAN
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONT 4 YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
553881 9 72 96.00 23 68.00
10 72 220.00 14 220.00
11 72 180.00 12 200.00
12 72 110.00 2 110.00
1 73 180.00
2 73 140.00 4 190.00
3 73 670.00 4 120.00
4 73 200.00 14 160.00 15 160.00 19 210.00
5 73 260.00 6 280.00 27 180.00
6 73 190.00 30 110.00
7 73 76.00 23 57.00
8 73 66.00 4 62.00
5 538C1 9 72 74.00 24 52.00
10 72 180.00 14 170.00
I l 72 150.00 12 160.00
12 72 88.00 2 88.00
1 73 140.00
2 73 120.00 4 160.00
3 73 540.00 4 99.00
6 73 150.00 15 120.00 19 150.00 28 150.00
5 73 200.00 6 210.00 27 130.00
6 73 150.00 30 86.00
7 73 58.00 23 44.00
8 73 51.00 4 48.00
553801 9 72 62.00 23 44.00
10 72 150.00 14 150.00
11 72 120.00 12 140.00
12 72 75.00 10 78.00
1 73 120.00
2 73 100.00 11 110.00
3 73 460.00 11 660.00
4 73 120.00 1 98.00 14 98.00
5 73 160.00 6 170.00 27 110.00
6 73 120.00 26 78.00
7 73 49.00 14 46.00
8 73 43.00 11 45.00 0 0.0
5538ZZ 9 72 160.00 23 110.00
10 72 340.00 14 330.00
11 72 280.00 12 310.00
12 72 170.00 10 170.00
1 73 260.00
2 73 210.00 4 290.00 11 230.00
3 73 990.00 4 180.00 11 1400.00
4 73 330.00 1 270.00 14 270.00 15 270.00
5 73 440.00 6 460.00 20 360.00 27 290.00
6 73 320.00 26 200.00 30 190.00 28 350.00
7 73 120.00 14 120.00 23 94.00
8 73 110.00 4 100.00 11 110.00
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APPENDIX B
PHYSICAL and CHEMICAL DATA
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STORET RETRIEVAL DATE 74/09/30
553801
44 07 12.0 088 53 00.0
POYGAN LAKE
55 WISCONSIN
11EPALES 2111202
3 0005 FEET DEPTH
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 SECCP4 1 FIELD CACO3 N-TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES MICROMMO SU MG/L MG/L MG/L MG/L P MG/L P
72/06/22 07 20 0000 18.5 5.8 24 285 7.90 148 0.180 0.100 0.046 0.026
07 20 0006 18.6 9.6 280 8.10 145 0.180 0.100 0.110 0.027
72/08/21 09 30 0000 19 280 8.65 134 0.060 0.040 0.048 0.018
72/11/08 08 00 0000 16 320 7.70 137 0.350 0.070 0.051 0.026
08 00 0004 6.0 10.9 320 7.70 135 0.350 0.070 0.063 0.025
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET LJG/L
72/06/22 07 20 0000 26.1J
72/08/21 09 30 0000 27.9)
72/11/08 08 00 0000 11.6J
J VALUE KNOWN TO BE IN ERROR
-------
STORET RETRIEVAL DATE 74/09/30
553802
44 09 24.0 088 49 00.0
POYGAN LAKE
55 WISCONSIN
11EPALES 2111202
3 0006 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY PH T ALK N02&N03 N113—N PHOS—TOT PHOS-DIS
FROM OF TEMP SECCHI FIELD CACO3 N-TOTAL TOTAL
TO DAY FEET CENT HG/L INCHES P4ICROMHO SU MG/L MG/L MG/L MG/L P MG/L P
72/06/22 08 40 0000 9.4 8.7 18 285 8.30 155 0.220 0.110 0.163 0.050
72/08/21 09 05 0000 17 360 8.60 129 0.070 0.070 0.065 0.026
09 05 0004 23.7 8.4 358 8.60 130 0.060 0.050 0.075 - 0.025
72/11/08 07 40 0000 17 325 7.70
07 40 0004 6.2 10.4 325 7.70 139 0.460 0.070 0.080 0.043
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/22 08 40 0000 18.3J
72/08/21 09 05 0000 36.3J
72/11/08 07 40 0000 5.6J
J VALUE KNOWN TO BE IN ERROR
-------
STORET RETRIEVAL DATE 74f09/30
553803
44 08 18.0 088 45 54.0
POYGAN LAKE
55 WISCONSIN
11EPALES 2111202
3 0006 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER 00 TRANSP CNDUCTVY PH T ALK N02&N03 NH3—N PHOS—TOT PHOS-DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT PIG/I INCHES HICROMHO SU MG/L 14G/L MG/I MG/I P P46/I P
7?/06/22 08 50 0000 18.3 8.8 275 8.40 150 0.080 0.100 0.062 0.024
08 SO 0005 18.3 9.9 270 8.60 149 0.070 0.100 0.088 0.024
7?/0R/21 08 40 0000 18 270 8.50 130 0.050 0.050 0.077 0.023
08 40 0004 23.7 7.4 275 8.50 131 0.060 0.070 0.079 0.026
72/Il/OR 07 20 0000 21 335 7.70 138 0.450 0.060 0.071 0.042
07 20 0004 6.2 10.4 335 7.70 137 0.450 0.060 0.074 0.041
322 17
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/22 08 50 0000 14.2J
72/08/21 08 40 0000 24.9J
7?/l1/0R 07 20 0000 9.7J
J VALUE KNOWN TO BE IN ERROR
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APPENDIX C
TRIBUTARY DATA
-------
STOPET RETRIEVAL DATE 74/10/02
55384? LS5538A2
‘+4 15 30.0 088 52 00.0
WOLF WIVEP
55 15 WEVAUWEGA
T/LAKE POYGAN
us io E RDG ABOVE FREMONT STP
1IEPALES 2111?04
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO?F NO3 TOT KJEL N93-N PHOS—DIS PHOS-TOT
FR’JM OF N—TOTAL N TOTAL O THO
TO DAY FEET MG/L lG/L MG/L MG/L P M4 ,/L P
72/09/23 11 35 0.480 0.850 0.?10 0.08? 0.096
72/10/14 14 ?0 0.240 0.900 0.09 0.046 0.096
77/11/12 14 10 0.366 0.750 0.024 0.035 0.061
73/01/13 14 30 0.870 1.100 J.126 0.048 0.080
71/02/11 14 15 0.790 0.880 0.071 0.038 0.070
73/03/11 14 30 0.630 1.470 0.410 0.089 0.188
71/04/01 09 50 0.160 0. ’60 0.008 0.010 O.O3D
71/04/14 14 20 0.110 0.780 0.014 0.013 0.030
73/05/06 09 30 0.092 1.380 0.078 0.036 0.060
73/05/20 14 30 0.068 1.540 0.042 0.040 0.080
73/06/26 10 15 0.?80 1.470 0.072 0.069 0.120
71/07/14 14 45 0.147 1.150 tJ.0?3 0.016 0.095
71/08/11 11 00 0.330 0.840 0.014 0.023 0.090
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STOPET RETRIEVAL DATE 74/10/02
553R43 LS553 8A3
44 13 00.0 08A 55 00.0
WOLF RIVEP
55 15 POY SIPPI
T/LAKE POYGAN
BANK ON HWY MM BELO FREMONTSTP
1 IFPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DFPT 4 NO2 NO3 TOT KJEL NH3—N PHOS-DIS PHOS-TOT
FROM OF N-TOTAL TOTAL OPTHO
TO DAY FEET MG/L MG/L Mr,/L MG/L P MG/L P
7?/09/23 0.190 0.650 0.105 0.015 0.105
72/10/14 14 40 0.?34 0.950 0.088 0.046 0.096
72/11/12 14 30 0.420 1.050 0.022 0.035 0.061
72/12/10 11 30 1.080 0.600 fl.076 0.038 0.063
73/01/07 1’. 45 0.990 1.050 0.120 0.042 0.070
73/02/lI 14 30 0.810 0.900 0.080 0.038 0.070
73/03/11 14 10 0.660 1.500 0.410 0.095 0.290
73/04/01 10 00 0.170 1.760 0.024 0.010 0.040
71/04/14 14 40 0.095 0.640 0.016 0.011 0.030
71/05/06 09 45 0.077 1.200 0.033 0.023 0.055
71/05/20 14 45 0.044 2.000 0.054 0.037 0.075
73/06/26 10 00 0.280 0.780 0.039 0.067 0.100
73/07/14 15 00 0.189 0.RI0 0.030 0.019 0.105
73/08/11 ii 15 0.370 0.690 0.01? 0.028 0.095
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ST)RET • ET !EVAL )A1 7 /1C/03
553 H1 LS5538 1
44 Ob 00.0 0 R Sb 00.0
w!LLO C EEK
55 15 P01 SIPPI
T/LA (E POYGAN
Co H Y 0 BROG SE OF P01 SZPPI
11 PALES 2111204
4 0000 FEET DEPTH
00630 006 ’ S 00610 00671 00665
1 )ATE TIr’IE flEPT NO NO3 TOT KJFL N13—N PHOS—, 1S PHOS—TcJT
FPO 4 OF N-TOTAL N TOTAL OQT iO
TO DAY FEET M&/L M(/L MG#’L MG/L P MG/L ?
7?/3 /24 16 00 0.0s6 1.650 0.115 0.0R 0.110
7?/1O/14 10 10 0.500 1. b0 G.1 0 0.046 0.092
72/ 11/13 13 25 O.4 ’ ) 1.?00 0.120 0.035 0.063
72/12/02 10 15 0.R70 0.635 0.03? 0.O IL+
73/uI/07 09 00 0.58) 1.200 0.160 0.022 0.045
71/0?/0’4 14 00 (j.770 1.150 0.1b 0.025 0.060
73/u3/04 11 ‘0 1.260 1. 80 0.730 0.075 0.145
73/04/14 0 3 ‘+0 0.150 1.230 0.100 0.040 0.015
73/04/15 1’ 30 ?.600 0.138 0.018 0.045
71/04/1’ 15 10 0.035 1 . O0 0.063 0.015 0.060
71/05/06 OR ‘5 0.050 2.100 0.080 0.030 0.015
73/05/27 13 45 0.04 1.500 0.054 0.038 0.11’)
71/06/30 ii 30 0.07 o.730 0.087 0.052 0.120
73/01/231350 0.037 o.c4 0 0.031 0.033 0.070
71/08/04 05 45 0.030 1.800 0.064 0.026 0.065
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STORET ETR1EVAL DATE 74/10/02
5538C 1 LS553RC1
44 07 30.0 088 57 30.0
PINE RIVER
55 15 POY SIPPI
T/L KE POYGAN
N—S PD XING SE OF POY SIPPIBELOW SIP
I1EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO2F .NO3 TOT KJEL NH3-N P OS—DIS PHOS—TOT
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L M(/L MG/L HG/L P MG/L P
7?/09/24 15 10 0.065 1.000 0.140 0.022 0.044
7?/10/14 10 00 0.740 0.575 0.066 0.017 0.036
72/11/10 13 00 1.320 1.300 0.065 0.015 0.032
7?/l?/0? 10 30 1.620 0.430 0.025 0.011 0.025
73/01/07 09 15 1.800 0.790 0.072 0.015 0.050
73/02/04 14 30 1.420 0.800 0.084 0.022 0.050
73/03/04 11 30 1.440 1.9 0 0.380 0.084 0.130
73/04/1 11 55 0.960 1.600 0.091 0.012 0.035
73/04/19 15 10 1.000 1.260 0.031 0.024 0.055
73/0 /2A 08 15 1.120 2.520 0.100 0.015 0.035
73/05/06 08 10 1.040 1.050 0.042 0.019 0.045
73/06/30 11 10 0.950 0.580 0.040 0.018 0.040
73/07/23 13 ?5 0.950 0.390 0.046 0.016 0.040
73/08/04 08 30 1.000 1.800 0.160 0.015 0.040
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STORET RETRIEVAL DATE 74/10/02
5538C?
44 08 00.0 089
PINE RIVER
55 15 POY
I/LAKE POYGAN
ST HWY 49 BROG
1 IEPALES
4
LS5538C2
00 00.0
s IPP I
ABOV POY SIPPI SIP
211 1204
0000 FEET DEPTH
00630
00625
00610
00671
00665
DATE
TIME
DEPTH
NO?&N03
TOT KJEL
NH3-N
PhOS—DIS
PHOS-TOT
FROM
OF
N—TOTAL
N
TOTAL
ORTHO
TO
DAY
FEET
MG/L
MG/L
MG/L
MG/L P
MG/L P
72/09/24
14
45
0.052
1.050
0.154
0.013
0.037
72/10/14
09
45
0.860
0.550
0.073
0.01?
0.037
7?/11/10
12
10
1.340
0.610
0.033
0.011
0.030
72/12/02
10
45
1.640
0.560
0.024
0.009
0.0??
73/01/07
09
30
1.900
0.720
0.071
0.011
0.030
73/02/04
15
00
1.460
1.600
0.?94
0.0 15
0.035
71/03/04
11
50
1.440
1.3’O
0.280
0.066
0.110
73/04/15
1.1
30
1.000
1.500
0.05?
0.009
0.030
73/Q4/19
15
00
1.020
1.400
0.060
0.009
0.040
73/04/28
08
00
1.140
0.980
0.023
0.010
0.020
73/0 /06
08
30
1.100
1.050
0.072
0.016
0.040
73/05/27
13
30
0.810
1.300
0.039
0.022
0.055
73/06/30
10
45
1.000
0.630
0.038
0.015
0.040
73/07/23
13
05
1.000
0.480
0.046
0.012
0.040
73/08/04
08
15
1.060
1.980
0.066
0.014
0.055
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STORET RETRIEVAL DATE 74/10/02
5538D1 LS5 S3W1
44 12 00.0 ORA 46 30.0
RAT RIVER
55 15 POY SIPPI
T/LA cE POYGAN
Co HWY MM BRDG S AND E OF ZITTAN
IIEPALES 2111204
4 C000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO2 .NO3 TOT KJEL NH3—N PHOS-DIS PHOS-TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FFET MG/L MG/L MG/L MG/L P MG/L P
72/09/23 11 15 0.210 ?-.300 0.074 0.126 0.154
7?/10/14 14 00 0.130 1.750 0.204 0.058 0.088
7?/11/17 14 00 0.044 1.600 0.060 0.020 0.046
7?/1?/10 10 ?5 0.200 2.100 0.168 0.021 0.063
73/01/13 14 00 0.100 2.600 0.450 0.115 0.300
71/02/11 13 55 0.063 0.110 0.075
73/03/11 13 45 0.720 1.440 0.220 0.05? 0.095
73/04/01 09 30 0.013 1.540 0.034 0.016 0.065
73/04/14 13 55 0.061 1.300 0.022 0.012 0.035
73/05/06 09 15 0.046 1.500 0.028 0.046 0.085
73/05/?7 14 15 0.019 1.680 0.029 0.160 0.230
73/06/26 10 30 0.0?? 2.45’) 0.080 0.340 0.470
73/07/14 14 30 0.012 ?.f ,00 0.046 0.310 0.440
73/08/11 10 35 0.010K ?.200 0.039 0.273 0.370
K VALUF- NOMN To HE LESS
THAN I ’DICATED
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