U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
697.032
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REPORT
ON
UAPOGASSET LAKE
POLKCOUfm
WISCONSIN
EPA REGION V
WORKING PAPER No,
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
III. Lake and Drainage Basin Characteristics 5
IV. Lake Water Quality Summary 6
V. Nutrient Loadings 12
VI. Literature Reviewed 17
VII. Appendices 18
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ii
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to 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 [ 5303(e)], water
quality criteria/standards review [ 5303(c)], clean lakes [ 5314(a,b)],
and water quality monitoring [ 5106 and 5305(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 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 0. 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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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 Col umbia
Wissota Chippewa
Yellow Burnett
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vi
‘I
WjSCOn j
hap Location
C ,)
x
WAPOGASSET
LAKE
Lake Sampling Site
Tributary Sampling Site
Direct Drainage Area Limits
Sewage Treatment Facility
0 2Mi.
L__ a
Scale
4524
)
I)
ear Trap
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WAPOGASSET LAKE
STORET 110. 5550
I. CONCLUSIONS
A. Trophic Condition:
Survey data and the records of others indicate Wapogasset
Lake is eutrophic.
B. Rate-Limiting Nutrient:
Results of the algal assay indicate Wapogasset Lake was co-
limited by nitrogen and phosphorus at the time the sample was
collected. Lake data indicate clear N-limitation at the other
sampling times.
C. Nutrient Controllability:
1. Point sources--During the sampling year, Wapogasset
Lake received a phosphorus load at a rate somewhat greater than
that proposed by Vollenweider (in press) as “dangerous”; i.e.,
a eutrophic rate (see page 16). Of this load, the Village of
Balsam Lake is estimated to have contributed nearly 22%.
The total phosphorus loading rates that can be achieved by
specified levels of phosphorus removal at the Balsam Lake plant,
as compared to Vollenweider’s suggested rates, are:
Total P Loading Rate
% P Removal lbs/acre/yr g/m 2 /yr
Existing 6.3 0.71
50 5.7 0.64
70 5.4 0.60
80 5.3 0.59
90 5.1 0.57
100 5.0 0.56
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2
Vol lenwel der:
“Dangerous”
“Permissible”
(eutrophic
(oligotro
rate)
phic rate)
0.62
0.31
While none of the removal options would result in an oligo-
trophic loading rate, it is calculated that 70% or more phos-
phorus removal at the Village of Balsam Lake would reduce the
loading to less than a eutrophic rate and should improve the
trophic condition of the lake after a new phosphorus equilibrium
has been established.
The waste discharge permit recently issued to the Village of
Balsam Lake by the Wisconsin Department of Natural Resources re-
quires upgrading of the waste treatn)ent plant by July 1, 1977.
Reportedly (Kozel, 1974), a new plant will be constructed with
final effluent disposal in a seepage lagoon.
2. Non-point sources (see page 16)--The calculated nutrient
exports of Balsam Branch during the sampling year are quite low
and may indicate some overestimation of the point-source loads.
However, even if none of the nutrient loads measured in Balsam
Branch are attributed to the point source, the exports would
still be a relatively low 61 lbs P and 811 lbs N/mi 2 /yr.
On the other hand, the nutrient exports of presumably unim-
pacted Friday Creek may appear to be somewhat high. However,
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3
they are similar to the exports calculated for the Kinnickinnic
River elsewhere in the St. Croix River drainage (i.e., 104 lbs
P and 2,694 lbs N/mi 2 /yr).
In all, non-point sources are estimated to have contributed
about 76% of the total phosphorus load to Wapogasset Lake during
the sampling year.
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4
II. INTRODUCTION
Wapogasset Lake is in the Apple River basin of the south central St.
Croix River drainage system. Land use in the basin is primarily agri-
cultural with dairying predominant. Industry in the area is largely the
production of dairy products.
Wapogasset Lake receives rather intensive recreational use, and pleas-
ure boating is said to be reaching problem proportions (Sather and
Threinen, l 6l). Other uses are swimming and fishing. Game fish present
are northern pike, walleyes, largemouth bass, and panfish.
Four resorts and two boat liveries offer services, and a number of
public access sites are provided.
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5
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry*:
1. Surface area: 1,186 acres.
2. Mean depth: 17.3 feet.
3. Maximum depth: 32 feet.
4. Volume: 20,469 acre/feet.
5. Mean hydraulic retention time: 194 days.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage areat Mean flowt
Balsam Branch 78.9 m1 2 42.7 cfs
Friday Creek 9.8 mi 2 5.0 cfs
Minor tributaries & 2
immediate drainage - 8.6 mi 5.6 cfs
Totals 97.3 mi 53.3 cfs
2. Outlet -
Sucker Branch of Apple River 99.1 mi 2 tt 53.3 cfs
C. Precipitationttt:
1. Year of sampling: 33.4 inches.
2. Mean annual: 28.1 inches.
* Ball, 1974.
t 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%.
ft Includes area of lake.
ttt See Working Paper No. 1, “Survey Methods”.
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6
IV. LAKE WATER QUALITY SUMMARY
Wapogasset Lake 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 two 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 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 22 feet at sta-
tion 1 and 20 feet at station 2.
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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7
A. Physical and chemical characteristics:
FALL VALUES
(11/03/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 5.4 5.5 5.4 5.6
Dissolved oxygen (mg/i) 10.1 10.9 10.5 13.2
Conductivity (jimhos) 190 193 193 198
pH (units) 7.7 7.8 7.8 7.8
Alkalinity (mg/i) 83 84 84 86
Total P (mg/i) 0.027 0.044 0.039 0.063
Dissolved P (mg/i) 0.013 0.016 0.015 0.020
NO + NO (mg/l) 0.160 0.174 0.175 0.190
Am onia mg/1) 0.040 0.049 0.050 0.060
ALL VALUES
Secchi disc (inches)
42 71
60 120
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8
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
06/26/72 1. Oscillatoria 132
2. Ariabaena 128
3. Melosira 58
4. MicrocystiS 47
5. Fragilaria 32
6. Chroococcus 31
Other genera 145
Total 573
08/26/72 1. Anabaena 2,899
2. Dinobryon 2,065
3. Fragilaria 1,268
4. Synura 507
5. Gloeocapsa 471
Other genera 1 ,993
Total 9,203
11/03/72 1. Melosira 1,284
2. Dinobryon 524
3. Cyclotella 289
4. Oscillatoria 253
5. Cryptomonas 199
Other genera 1 ,068
Total 3,617
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9
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 )
06/26/72 01 7.8
02 15.7
08/26/72 01 19.7
02 35.2
11/03/72 01 9.3
02 11.9
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/i) Conc. (mg/i) Conc. (mg/i) ( mg/i—dry wt. )
Control 0.017 0.220 5.5
0.006 P 0.023 0.220 5.5
0.012 P 0.029 0.220 5.4
0.024 P 0.041 0.220 5.7
0.060 P 0.077 0.220 5.6
0.060 P + 10.0 N 0.077 10.220 33.9
10.0 N 0.017 10.220 6.4
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum , indicates that the potential primary productivity
of Wapogasset Lake was moderately high at the time the sample
was collected.
Yield responses to nutrient spikes indicate the lake was
co-limited by nitrogen and phosphorus during the November
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10
sampling (it is noted that there was no loss of either nutri-
ent between the time the sample was collected and the assay
was begun).
The N/P ratio of the control was a borderline 13/1. Note
that the addition of successive spikes of orthophosphoruS re-
sulted in yields not significantly different than the control
yield until nitrogen was also added. Also note that though
the yield resulting from the addition of only nitrogen was
significantly greater than the control yield, the difference
was minimal.
Lake data indicate nitrogen limitation at the other
sampling times. The N/P ratios were 10/1 and 7/1 for the
June and August samplings respectively.
D. Trophic Condition:
Survey data and observations and the records of others indi-
cate Wapogasset Lake is eutrophic. Survey limnologists observed
an algal bloom in progress in June and noted that rather heavy
growths of aquatic vegetation occupied much of the littoral zone
of the lake. According to Department of Natural Resource records,
frequent efforts have been made to chemically control weeds and,
to a lesser extent, algae (Leuschow, 1972).
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11
Of the 46 Wisconsin lakes studied, 16 had less mean total phos-
phorus, 14 had less mean dissolved phosphorus, 28 had less mean
chlorophyll a_, 25 had lower algal assay control yields, but only
9 had less mean inorganic nitrogen.
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12
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
runoff months of April and May when two samples were collected. Samp-
ling 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
program for calculating stream loadings. Nutrient loadings for unsam—
pled “minor tributaries and immediate drainage” (“ZZ” of U.S.G.S.) were
calculated using the mean concentrations in Friday Creek at station C-i
and the mean ZZ flow.
The Village of Balsam Lake declined participation in the Survey, and
nutrient loads attributable to that source were estimated at 2.5 lbs P
and 7.5 lbs N/capita/year.
Another municipal source, the Village of Militown, is located up-
stream from the Village of Balsam Lake within the 25-mile limit of the
Survey. However, the effluent of this primary SIP is discharged to a
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13
marsh, and any nutrients leaving the marsh would be further reduced in
the intervening Rice Lake and Balsam Lake before reaching Wapogasset
Lake. Therefore, it is assumed that nutrients from the Village of
Militown have little, if any, effect on Wapogasset Lake.
In the following loading tables, the nutrient loads shown for Balsam
Branch do not include the loads estimated for the Village of Balsam Lake.
A. Waste Sources:
1. Known municipal -
Pop. Mean Receiving
Name Served Treatment Flow (mgd) Water
Balsam 648* Primary O.065** Balsam Branch
Lake
2. Known industrial - None
* 1970 Census.
** Estimated at 100 gal/capita/day.
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14
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs —
lbs P1 % of
Source yr total
a. Tributaries (non-point load) -
Balsam Branch 3,190 42.4
Friday Creek 1,150 15.3
b. Minor tributaries & immediate
drainage (non-point load) — 1 ,220 16.2
c. Known municipal -
Balsam Lake 1,620 21.5
d. Septic tanks* - 170 2.2
e. Known industrial - None -
f. Direct precipitation** - 180 2.4
Total 7,530 100.0
2. Outputs -
Lake outlet - Sucker Branch 4,280
3. Net annual P accumulation - 3,250 lbs.
* Four resorts, 220 dwellings, and 1 camp on lakeshore (Ball, 1974);
see Working Paper No. 1.
** See Working Paper No. 1.
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15
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs —
lbs N/ % of
Source yr total
a. Tributaries (non-point load) -
Balsam Branch 59,130 50.4
Friday Creek 15,940 13.6
b. Minor tributaries & immediate
drainage (non-point load) - 19,660 16.8
c. Known municipal —
Balsam Lake 4,860 4.2
d. Septic tanks* - 6,270 5.3
e. Known industrial - None -
f. Direct precipitation** - 11,430 9.7
Total 117,290 100.0
2. Outputs —
Lake outlet - Sucker Branch 116,850
3. Net annual N accumulation - 440 lbs.
* Four resorts, 220 dwellings, and one camp on lakeshore (Ball, 1974);
see Working Paper No. 1.
** See Working Paper No. 1.
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16
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Balsam Branch 40 749
Friday Creek 117 1,627
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 morphometry permitted. A mesotrophic rate would be consid-
ered one between “dangerous” and “permissible”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
1bs/acr /yr 6.3 2.7 98.9 0.4
grams/rn /yr 0.71 0.30 11.1 <0.1
Vo11e weider loading rates for phosphorus
(gfm /yr) based on mean depth and mean
hydraulic retention time of Wapogasset Lake:
“Dangerous” (eutrophic rate) 0.62
“Permissible” (oligotrophic rate) 0.31
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17
VI. LITERATURE REVIEWED
Anonymous, 1972. Wisconsin lakes. Pubi. 218—72, Dept. of Natural
Resources, Madison.
Ball, Joseph, 1974. Personal communication (Wapogasset Lake shore-
line development and morphometry). Dept. of Natural Resources,
Madison.
Lueschow, Lloyd A., 1972. Biology and control of selected aquatic
nuisances in recreational waters. Tech. Bull. #57, Dept. of
Natural Resources, Madison.
Kozel, Charles, 1974. Intra-department memorandum (review of
preliminary report; upgraded waste treatment facilities at
Balsam Lake). District Office, Dept. of Natural Resources,
Eau Claire.
McKersje, Jerome R., Robert M. Krill, Charles Kozel, Thomas E. DeWitt,
and Danny J. Ryan, 1972. St. Croix River pollution investigation
survey. Dept. of Natural Resources, Madison.
Sather, LaVerrie, and C. W. Threinen, 1961. Surface water resources
of Polk County. Conservation Dept., 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 5550 WAPOGASETT LAKE
TOTAL DRAINAGE AREA OF LAKE 99.10
SUB—DRAINAGE NORMALIZED FLOWS
TRIBUTARY AREA JAN FEB MAR APR HAY JUN JUL AUG SEP OCT NOV DEC MEAN
555 0A1 99.10 18.10 41.40 72.00 128.30 59.20 81.90 49.30 35.50 45.40 45.40 37.50 26.60 53.31
SS SOBI 78.90 15.00 34.00 57.00 100.00 49.00 66.00 40.00 29.00 38.00 36.00 29.00 21.00 42.74
5550C1 9.76 1.80 4.50 7.00 11.00 5.20 7.20 4.60 3.60 4.50 4.60 3.60 2.40 4.99
S5SOZZ 10.40 2.00 4.40 7.60 13.00 6.30 8.70 5.20 3.80 4.80 4. O 4.00 2.80 5.60
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 99.10 TOTAL FLOW IN = 641.40
SUM OF SUB-DRAINAGE AREAS = 99.06 TOTAL FLOW OUT = 641.20
MEAN MONTHLY FLOWS AND OAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
SS SOAI 9 72 42.00 24 41.00
10 72 50.00 8 55.00
I I 72 50.00
12 72 37.00 2 36.00
1 73 46.00
2 73 44.00 3 51.00
3 73 135.00 5 54.00
4 73 180.00 8 160.00 25 180.00
5 73 240.00 6 2?O.00 21 110.00
6 73 110.00 21 88.00
7 73 56.00 5 56.00
8 73 70.00 12 67.00
555081 9 72 31.00 24 31.00
10 72 37.00 8 41.00
11 72 38.00
12 72 26.00 2 27.00
I 73 35.00
2 73 34.00 3 39.00
3 73 105.00 5 41.00
4 73 160.00 8 140.00 25 150.00
5 73 210.00 6 190.00 21 92.00
6 73 90.00 21 74.00
7 73 46.00 5 46.00
8 73 58.00 12 56.00
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TRIBUTARY FLOW INFORMATION FOR WISCONSIN
9/30/74
LAKE CODE 5550
WAPOGASETT LA’(E
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY
MONTH
YEAR
MEAN FLOW
DAY
FLOW
DAY
FLOW DAY FLOW
5550C1
9
72
2.00
24
2.00
10
72
2.40
8
2.60
11
72
2.40
12
72
1.80
2
1.70
1
73
3.00
?
73
2.90
3
3.40
3
73
9.00
5
3.60
4
73
47.00
8
39.00
25
47.00
5
73
60.00
6
58.00
21
18.00
6
73
17.00
21
14.00
7
73
6.30
5
6.30
8
73
10.00
12
10.00
5550ZZ
9
10
11
12
1
2
3
4
5
6
7
8
72
72
7?
72
73
73
73
73
73
73
73
73
2.20
2.60
2.70
1.90
3.20
3.10
9.70
49.00
64.00
18.00
6.70
11.00
24
8
2
3
5
8
6
21
5
12
2.10
2.80
1.80
3.60
3.80
41.00
56.00
14.00
6.70
11.00
25
21
45.00
19.00
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APPENDIX B
PHYSICAL and CHEMICAL DATA
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STORET RETRIEVAL DATE 74/09/30
DATE
FROM
TO
7?/06/26
7/08/26
72/11/03
TIME DEPTH
OF
DAY FEET
11 35 0000
09 00 0000
15 00 0000
32217
CHLRP NY I
A
UG/L
7.8J
19.7J
9. 3J
555001
45 19 00.0 092 25 20.0
WAPOGASSET LAKE
55 WISCONSIN
I IEPAIES 2111202
5 0013 FEET DEPTH
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
WATER
DO
TRANSP
CNDLJCTVY
PH
T ALK
N02&N03
NH3—N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCMI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMHO
SU
MG/I
M6/L
MG/I
MG/I P
MG/I P
72/06/26
11 35 0000
21.6
48
220
8.80
96
0.050
0.060
0.024
0.014
11 35 0012
19.3
7.8
220
8.20
95
0.040
0.070
0.017
0.012
72/08/26
09 00 0000
48
198
8.75
92
0.060
0.120
0.031
0.013
09 00 0004
20.8
6.8
198
8.70
94
0.050
0.120
0.046
0.013
09 00 0010
20.8
6.5
198
8.73
93
0.050
0.120
0.035
0.013
09 00 0015
20.7
5.0
200
8.60
94
0.050
0.200
0.042
0.018
09 00 0022
20.5
210
7.45
97
0.040
0.460
0.086
0.066
72/11/03
15 00 0000
96
193
7.80
84
0.180
0.040
0.033
0.017
15 00 0004
5.6
10.6
190
7.80
84
0.180
0.050
0.030
0.018
15 00 0014
5.5
10.4
190
7.80
85
0.180
0.040
0.045
0.020
15 00 0019
5.6
10.1
198
7.80
84
0.190
0.060
0.062
0.015
J VALUE KNOWN TO BE IN ERROR
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STORET RETRIEVAL DATE 74/09/30
555002
45 20 00.0 092 26 00.0
WAPOGASSET LAKE
55 WISCONSIN
1 IEPALES
5
2111202
0018 FEET DEPTH
DATE
FROM
TO
72/06/26
72/0 8/26
72/11/03
TIME DEPTH
OF
DAY FEET
12 05 0000
09 25 0000
15 15 0000
32217
CHLRPHYL
A
UG/L
15.7J
35.2J
11.9J
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
WATER
DO
TRANSP
CNDLJCTVY
PH
1 ALK
N02&N03
NH3—N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N-TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMNO
SU
MG/L
MG/L
MG/L
MG/I P
MG/I P
72/06/26
12 05 0000
20.8
72
220
8.70
93
0.050
0.120
0.029
0.013
12 05 0018
18.9
8.0
220
8.20
72/08/26
09 25 0000
42
180
8.71
93
0.060
0.090
0.059
0.015
09 25 0004
20.5
7.4
180
8.75
91
0.070
0.100
0.061
0.017
09 25 0015
20.5
7.1
180
8.70
92
0.060
0.180
0.150
0.059
-
09 25 0020
20.2
5.6
183
8.50
94
0.060
0.020
0.140
0.074
7?/11/03
15 15 0000
120
193
7.80
86
0.160
0.050
0.027
0.016
15 15 0004
5.4
13.2
193
7.80
85
0.160
0.040
0.029
0.015
15 15 0014
5.4
10.2
195
7.70
84
0.170
0.060
0.061
0.013
15 15 0019
5.4
10.9
195
7.70
83
0.170
0.050
0.063
0.014
3 VALUE KNOWN TO BE IN ERROR
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APPENDIX C
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 74/10/02
5L ,0A] LS5SSOA I
19 30.0 09? 26 30.0
SUCKEk B ’ANC’-4 (APPLE RIVER)
15 BALSAM LAKE
O/WAPOGASSETT LAKF
CC) H Y F BPDG 1.5 MI NNW OFOERONDA
1 1EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH r )07F.N03 TOT P(JEL NHIN PHOS—DIS PHOSTOT
FP OM OF ‘4-TOTAL N TOTAL OPTHO
TO DAY FEFT MG/L MG/L M(/L r (i/L P MC,/L P
72/09/24 iS 30 0.039 0. 00 0.070 0.015 0.07?
7?/10/O 1330 0.ORR 0.700 0.0 7 0.0?6 0.06 1
77/11/0 ” 11 45 1.660 0.500 0.013 0.019 0.033
77/12/07 11 50 0.250 O. D 0.012 0.008 0.031
71/01/06 14 45 0.260 0.720 0.044 0.008 0.030
73/02/03 14 40 0.290 0.540 0.033 0.019 0.030
71/03/05 14 05 0.350 0.400 0.04? 0.015 0.025
73/04/OH 13 10 0.1 8 1.100 0.016 0.005K 0.050
73/04/25 1? 45 0.08’ 1.100 0.015 0.007 0.030
71/05/06 1? 70 0.054 0.540 0. O IH 0.009 0.025
71/05/21 09 15 0.01-i 1.R90 0.063 0.013 0.040
73/06/21 1? 15 0.176 0. 54Ci 0.007 0.006 0.035
73/07/05 1? 40 0.010K 0.650 0.01? C.02? 0.030
71/0F4/1? 1420 0.01 l.3 0 0.016 0.010 0.055
V LU • ‘JO Jf TO r E LESS
THAN 1ND1CAT ::.
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STDPET RETRIE:VAL DATE 74/10/02
5550H1 LS555081
45 21 30.0 09? 27 30.0
BALSAII BPANC,4
55 15 BALSAM LAIcE
T/WAPOGASSETT LAKE
C t) RD XING UPSTREAM OF C
1 1E ALES
4
0 TRUNK C BRO
211 120 .
0000 FEET
DEPTH
00630
00625
00610
00671
00665
DATE
TIME
DEPTH
N0 .NO3
TOT KJEL
NH3-PJ
PHOS-DIS
PHOS—TOT
FROM
OF
N—TOTAL
N
TOTAL
ORTHO
TO
DAY
FF T
MG/L
4C,/L
MG/L
MG/L P
MG/L P
7?/0 /24
14
30
0.291
0.500
0.09?
0.012
0.052
7?/I0/08
13
00
0.143
0.450
J.075
0.021
0.050
77/11/04
10
45
0.168
0.700
0.032
0.018
0.046
7’/12/0?
11
30
0.220
0.560
0.036
0.0)1
0.015
71/01/06
14
30
0.290
0.560
0.078
0.014
0.040
71/07/03
14
25
0.270
0.4 O
0.056
0.011
0.035
73/03/05
13
45
0.410
?.400
0.775
0.080
71/06/08
13
45
0.046
0.580
0.009
0.008
0.050
73/04/25
13
10
0.017
0.480
0.007
0.014
0.040
71/05/06
1.
00
0.024
0.540
0.023
0.01
0.045
73/05/21
08
45
0.039
0.690
0.050
0.032
0.O7
73/06/21
12
35
0.096
O.5?0
0.105
0.006
0.0 0
73/07/05
13
00
0.035
0.810
0.198
0.054
0.095
71/08/1?
14
00
0.069
1.10’)
0.044
0.042
0.07?
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STORET RETRIEVAL DATE 74/10/02
5550B2 LS5550R2
45 ‘5 30.0 09? 28 00.0
BALSAM BRANCH
55 15 ‘3ALSAM LAKE
T/wAPOc3ASSETT LAKE
Co o XING SE OF HALSAM LAKE BELO SIP
1 IEPALFS 2111204
4 0000 FEET DEPTH
00630
00625
00610
00671
00665
DATE
TIME
DEPTH
NO &NO3
TOT KJFL
N13—N
PHOS—DIS
PHOS—TOT
FROM
OF
N-TOTAL
N
TOTAL
ORTH()
TO
DAY
FEET
MC,/L
MG/L
MC,/L
MG/L P
MG/L P
7?/09/24
14
50
0.090
0.700
0.057
0.005K
0.046
7?/10/08
13
00
.1P0
1.000
0.132
0.018
0.052
7?/11/04
10
00
0.115
0.420
0.020
0.016
0.037
72/12/0?
11
00
0.180
0.830
0.027
0.014
0.046
73/01/06
14
10
0.198
1.250
0.048
0.018
0.040
73/O?/03
14
00
0. IAR
0.540
3.035
0.016
0.035
73/03/OS
1?
50
0.530
0.610
0.138
0.036
0.070
73/04/08
1?
30
0.100
2.200
t’.063
0.011
0.0’.5
71/04/25
14
20
0.061
0.580
0.025
0.019
0.045
71/05/06
11
35
0.115
0.560
0.048
0.026
0.047
73/05/21
08
15
0.168
1.700
0.150
0.039
0.082
71/06/23
1
50
0.580
0.540
0.100
0.007
0.050
71/07/05
13
IS
0.058
0.540
0.042
0.025
0.055
71/08/1?
13
40
O.?Q0
0.720
0.058
0.058
O. 09 D
tc V. LUE NO !’J TO LLSS
T8 N Jr 4DICATEL)
-------
STORET RETRIEVAL DATE 74/10/02
5550B3 L 5555083
‘ .5 27 00.0 09? 27 00.0
BALSAM BRANCH
55 15 BALSAM LAKE
T/t APOGASSETT LAKE
Co RD XING OUTLET BELOW BALSAM LAKE SIP
I1EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO?&N03 TOT KJEL NH3-N Pt-ios—ois PHOS—TOT
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L D
72/0 /24 15 00 0.016 0.700 0.024 0.009 0.029
7?/I0/08 13 30 0.110 1.200 0.107 0.006 0.042
7?/I1/04 10 30 0.025 0.560 0.007 0.005K 0.020
7?/12/02 11 15 0.0b8 0.850 0.014 0.007 0.021
73/01/06 14 15 0.084 0.460 0.055 0.011 0.025
73/02/03 14 05 0.110 0. ?5 0.046 0.017 0.020
73/01/05 12 35 0.160 2.310 0.040 0.014 0.0?0
73/04/08 11 00 0.066 2.000 0.072 0.006 0.035
73/04/25 13 40 0.010K 0.7S0 0.005K 0.005K 0.0?0
73/05/06 11 45 0.029 1.760 0.061 0.013 0.030
73/05/21 08 30 0.021 1.980 0.110 0.017 0.035
73/06/21 13 00 0.310 0.720 0.028 0.018 0.030
73/07/05 13 20 0.010K 0.480 0.021 0.005K 0.020
71/08/ i? 13 45 0.017 0.600 0.038 0.008 0.045
K Vi LU rcFJOWN TO - F L SS
T-Ii N INDICATEt . )
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STORET RETRIEVAL DATE 741)0/02
5550C1 LS5S5OC1
45 20 30.0 09? 25 00.0
FRIDAY CREE’<
55 15 BALSAM LAKE
T/WAPOGASSETT LAKE
Co TRUNK C XINr, NEAR CMP ICAGHOWAN
1 1EPALES 2111204
4 0000 FEET DEPTH
00630 006?5 00610 00671 00665
DATE TIME DEPTH NO2 .NO3 TOT KJEL NI-t3—N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L 4G/L MG/L MG/L P MG/L P
72/09/24 14 15 0.130 1.350 0.05 5 0.005K 0.087
72/10/08 13 00 0.420 0.950 0.168 0.032 0.08
72/11/04 11 15 0.?89 0.960 0.026 0.027 0.050
77/12/0? 11 40 0.960 1.000 0.050 0.018 0.052
73/01/06 14 45 1.100 0.580 0.126 0.028 0.055
73/02/03 14 35 1.140 0.600 0.072 0.027 0.045
73/03/05 13 40 1.260 3.300 0.630 0.110 0.200
73/04/08 12 45 0.410 0.795 0.018 0.022 0.055
73/04/25 13 00 0.357 0.780 0.018 0.036 0.065
73/05/06 1? 10 0.336 0.980 0.048 0.030 0.060
73/05/21 09 00 0.280 2.800 0.099 0.052 0.240
73/06/21 12 25 0.336 0.940 0.036 0.044 0.170
73/07/05 1? 50 0.540 1.000 0.069 0.154 0.260
71/08/1? 14 10 0.560 0.810 0.046 0.074 0.130
K VPLUI- r NOvN T) LE’SS
THA J I’JDIC TF)
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