U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
TOWNLINE LAKE
ONEIDA COUNTY
WISCONSIN
EPA REGION V
WORKING PAPER No. 53
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
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REPORT
ON
TOWNLINE LAKE
ONEIDA COUMY
WISCONSIN
EPA REGION V
WORKING PAPER No, 53
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
Sections
I. Conclusions
II. Introduction 3
III. Lake and Drainage Basin Characteristics 4
IV. Lake Water Quality Summary 5
V. Nutrient Loadings 10
VI. Literature Reviewed 15
VII. Appendices 16
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11
FOR EWO RD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration cormiitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water lakes and
reservoirs.
OBJ [ CT IV ES
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)],
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.
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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T’ T
-:i i --
- “ ce -
• A .A . \ -- - --
LA
A A
-‘ -I . .—
— A. + - * — 4
• - - A -‘
4. - A A
A - L -
‘ •A L— — -•. ‘•
A
A 4. -
A
-
A -
A A
A
4.. A
-
- A
Wisconsin
Map Location
TOWNLINE LAKE
X Lake Sampling Site
0 Tributary Sampling Site
Sewage Treatment Facility
0
Sca 1 e
45 48
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TOWNLINE LAKE
STORET NO. 5548
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Townhine Lake is eutrophic. However,
as far as is known, there have been few, if any, reports of nuisance
conditions in the lake.
B. Rate-Limiting Nutrient:
Lake data indicate that Townhine Lake was nitrogen limited at
all depths during all sampling periods, except for the 15-foot
June sample. Contrarily, the results of the algal assay indicate
phosphorus limitation. However, there was a considerable loss of
nitrogen and phosphorus in the sample before the assay was begun,
and the results are not considered to be indicative of the lake
condition (see discussion, page 8).
C. Nutrient Controllability:
1. Point sources--It is calculated that during the sampling
year, Townline Lake received a total phosphorus load at a rate
about three times that proposed by Vollenweider (in press) as
“dangerous”; i.e., a eutrophic rate (see page 14). Of that
loading, it is estimated that the Three Lakes Sanitary District
contributed nearly 54%.
In view of the high loading rates and the relatively high
nutrient concentrations in the lake, it would be expected that
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2
growths of algae or aquatic weeds or both would be a common oc-
currence. However, apparently this is not the case. It is con-
cluded, therefore, that some factor or combination of factors,
other than nitrogen and phosphorus, is limiting the primary
productivity of the lake and that removal of phosphorus at the
Three Lakes Sanitary District facility at this time probably
would not appreciably enhance the recreational uses of the
lake.
2. Non-point sources (see page 14)--The estimated phosphorus
export of Townilne Creek during the sampling year was quite high
(212 lbs/mi 2 /yr) as compared to the phosphorus exports of tribu-
taries to nearby Willow Reservoir (Ca. 65 lbs/mi 2 /yr). This may
have been due to underestimation of the Three Lakes Sanitary
District phosphorus contribution, but the extensive marsh along
the course of Townline Creek could have been the source.
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3
II. INTRODUCTION
Townline Lake is located in a sparsely populated area in the Upper
Wisconsin River basin of north central Wisconsin. The area was glaciated,
and the topography is largely level outwash plains and moraines. Much of
the area is forested, although cranberry bogs are comon.
Townline Lake is in a popular summer resort area, and recreational
activity is said to be the base of the local economy. The primary recre-
ational uses of the lake are boating and fishing. Game fish present in-
clude muskellunge, walleyes, largeniouth bass, and panfish. Comercial
boating facilities are available; and although most of the shoreline is
privately owned, public access is provided.
Other uses of the lake include flood control and low-flow augmentation.
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III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry:
1. Surface area: 150 acres.
2. Mean depth: 12.4 feet.
3. Maximum depth: 30 feet.
4. Volume: 1,855 acre/feet.
5. Mean hydraulic retention time: 253 days.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage area* Mean flow*
Townline Creek 3.3 mi 2 2.7 cfs
Minor tributaries & 2
immediate drainage - 1.2 mi 1.0 cfs
2 2
Totals 4.5 mi 3.7 cfs
2. Outlet -
Unnamed Creek 4.7 mi 2 ** 3.7 cfs
C. Precipitationt:
1. Year of sampling: 37.9 inches.
2. Mean annual : 32.3 inches.
* 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.
t See Working Paper No. 1, “Survey Methods”.
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5
IV. LAKE WATER QUALITY SUMMARY
Townline Lake was sampled three times during the open-water season
of 1972 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from one
station on the lake and from a number of depths at the station (see
map, page vi). During each visit, a single depth-integrated (near bot-
tom to surface) sample was collected for phytoplankton identification
and enumeration; and during the last visit, a single five-gallon depth-
integrated sample was collected for algal assays. Also each time, a
depth-integrated sample was collected from the station for chlorophyll a
analysis. The maximum depth sampled was 15 feet.
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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A. Physical and chemical characteristics:
FALL VALUES
(11/04/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 3.5 3.5 3.5 3.5
Dissolved oxygen (mg/i) 9.2 9.2 9.2 9.2
Conductivity ( imhos) 90 90 90 90
pH (units) 6.5 6.5 6.5 6.5
Alkalinity (mg/i) 18 19 19 20
Total P (mg/i) 0.109 0.110 0.109 0.111
Dissolved P (mg/i) 0.049 0.049 0.049 0.050
NO.) + NO (mg/i) 0.180 0.197 0.200 0.210
Am onia mg/1) 0.240 0.260 0.270 0.270
ALL VALUES
Secchi disc (inches) 24 32 36 36
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7
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
•Date Genera per ml
06/25/72 1 . Anabaena 326
2. Ankistrodesmus 167
3. Dinobryon 149
4. Synedra 113
5. Oocystis 54
Other genera 104
Total 913
08/23/72 1. Synedra 687
2. Mallomonas 223
3. Cryptomonas 193
4. Ankistrodesmus 181
5. Dinobryon 157
Other genera 277
Total 1,718
11/04/72 1. Phacus 778
2. Melosira 588
3. Synedra 515
4. Dinobryon 208
5. Oscillatoria 199
Other genera 434
Total 2,722
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8
Maximum yield
( mq/l -dry wt. )
3.8
5.7
8.0
8.2
7.8
33.9
2.6
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 ( ig/l )
06/25/72 01 6.8
08/23/72 01 4.5
11/04/72 01 4.1
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked —
Ortho P Inorganic N
___________ Conc. (mg/l) Conc. (mg/l ) _____________
0.014 0.231
0.020 0.231
0.026 0.231
0.038 0.231
0.074 0.231
0.074 10.231
0.014 10.231
Spike (mq/l ) ___________ ___________ ____________
Control
0.006 P
0.012 P
0.024 P
0.060 P
0.060 P + 10.0 N
10.0 N
2. Discussion -
Although the assay results indicate phosphorus limitation,
a significant loss of nitrogen and phosphorus occurred between
the time the sample was collected and the time the assay was
begun. Therefore, the results are considered unreliable.
Whether the loss occurred during shipment or storage of the
sample is not known, but there was a 55% loss of dissolved
phosphorus and a 49% loss of inorganic nitrogen.
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9
The lake data indicate that Townline Lake was nitrogen
limited. Except for the 15-foot June sample in which the
nitrogen to phosphorus ratio was 19 to 1, all samples had
N/P ratios of 10/1 or less; i.e., nitrogen limitation would
be expected.
D. Trophic Condition:
As far as is known, no particular aquatic nuisance problems
have been reported for Townline Lake; nonetheless, Survey data
indicate that Townline Lake is eutrophic. Of the 44 Wisconsin
lakes on which sampling was completed, 27 had less mean total
phosphorus, 26 had less mean dissolved phosphorus, and 23 had
less mean inorganic nitrogen. While only 9 of the lakes had
less mean chlorophyll a, 29 had greater Secchi disc transparency
(Survey limnologists noted high turbidity and strong humic colora-
tion in the lake on all sampling visits, and phytoplankton may
have been somewhat light inhibited).
Dissolved oxygen was depleted at the 15-foot level in June
and in August.
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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, tributary nutrient loads were calculated using mean
concentrations and mean flows. Nutrient loadings for “minor tributaries
and immediate drainage” (“ZZ” of U.S.G.S.) were calculated using the
mean nutrient loading rate (lbs/mi 2 /yr) for Willow Reservoir, a reservoir
in Oneida County having similar drainage characteristics.
The nutrient loads attributed to Townline Creek in the following
loading tables are those measured at station A-i minus the loads attributed
to the Three Lake Sanitary District treatment facility.
The community of Three Lakes submitted a number of effluent samples,
but too few flow data were provided to permit loading calculations. Nu-
trient loads were estimated on the basis of population served and annual
per capita contributions of 2.5 lbs of phosphorus and 7.5 lbs of nitrogen.
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Of the 10 dwellings along the lake shore, half were assumed to be
permanent residences, and the eight resorts were each assumed to be
equivalent to 10 dwellings. Loadings were then determined as given in
Working Paper No. 1, “Survey Methods”.
A. Waste Sources:
1. Known municipal -
Pop. Mean Receiving
Name Served Treatment Flow (mgd) Water
Three 400* Primary O.040** Townline Creek
Lakes S. D.
2. Industrial - Unknown
*Schraufnagel, 1974.
** Estimated at 100 gal/capita/day.
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B. Annual Total Phosphorus Loading - Average Year:
1 . Inputs -
lbsP/ %of
Source yr total
a. Tributaries (non—point load) -
Townline Creek 700 37.4
b. Minor tributaries & immediate
drainage (non-point load) - 90 4.8
c. Known municipal SIP’s -
Three Lakes 1 ,000 53.5
d. Septic tanks* - 60 3.2
e. Industrial - None known - -
f. Direct precipitation** - 20 1.1
Total 1,870 100.0
2. Outputs -
Lake outlet - Unnamed Creek 890
3. Net annual P accumulation - 980 pounds
* Ten dwellings and 8 resorts on lakeshore; see Working Paper No. 1.
** Estimated; see Working Paper No. 1.
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C. Annual Total Nitrogen Loading - Average Year:
1 . Inputs -
lbsN/ %of
Source yr total
a. Tributaries (non-point load) -
Townline Creek 4,180 33.2
b. Minor tributaries & immediate
drainage (non-point load) - 1,780 14.1
c. Known municipal STP’s -
Three Lakes 3,000 23.8
d. Septic tanks* - 2,190 17.4
e. Industrial - None known
f. Direct precipitation** - 1,450 11.5
Total 12,600 100.0
2. Outputs -
Lake outlet - Unnamed Creek 11 ,440
3. Net annual N accumulation - 1,060 pounds
* Ten dwellings and 8 resorts on lakeshore; see Working Paper No. 1.
** Estimated; see Worling Paper No. 1.
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D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Townline Creek 212 1,267
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 mar-
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 12.5 5.9 84.0 7.1
grams/rn /yr 1.40 0.66 9.4 0.8
Vol1e weider loading rates for phosphorus
(g/m /yr) based on mean depth and mean
hydraulic retention time of Townline Lake:
“Dangerous” (eutrophic rate) 0.46
“Permissible” (oligotrophic rate) 0.23
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VI. LITERATURE REVIEWED
Anonymous, 1972. Wisconsin lakes. Pub]. #218-72, Dept. of Natural
Resources, Madison.
Andrews, Lloyd M., and C. W. Threinen, 1966. Surface water resources
of Oneida County. Conservation Dept., Madison.
Ball, Joseph, 1974. Personal communication (resorts and dwellings
around Townline Lake). Dept. of Natural Resources, Madison.
McKersie, Jerome R., Robert M. Krill, William Doyle, and Larry
Maltbey, 1970. Upper Wisconsin River pollution investigation
survey. Dept. of Natural Resources, Madison.
Pomes, James N., 1974. Personal communication (location of Three
Lakes S. D. outfall). Three Lakes Sanitary District, Three Lakes.
Schraufnagel, Francis H., 1974. Personal communication (population
served by Three Rivers S. D.; drainage characteristics). 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 5548 TOWN LINE LAKE
TOTAL DRAINAGE AREA OF LAKE 4.68
SUR—DRAINAGE NORMALIZED FLOWS
TRIBUTARY AREA JAN FEB MAR APP NAY JUN JUL AUG SEP OCT NOV DEC MEAN
5548A1 3.26 1.60 1.60 2.40 4.60 3.70 4.90 2.30 1.60 2.20 2.60 2.90 1.90 2.69
554881 4.68 1.53 2.41 3.83 7.44 5.80 6.67 3.06 2.51 3.28 3.17 3.28 1.97 3.74
5548ZZ 1.42 0.42 0.68 1.10 2.10 1.60 1.90 0.84 0.69 0.93 0.88 0.93 0.55 1.05
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 4.68 TOTAL FLOW IN = 44.92
SUM OF SUB—DRAINAGE AREAS 4.68 TOTAL FLOW OUT = 44.95
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
5548A1 9 72 1.30 24 1.20
10 72 1.80
11 72 1.50
12 72 0.60 9 0.70
1 73 0.90
2 73 1.30 9 1.30
3 73 11.00 10 4.30
4 73 26.00 7 24.00 28 22.00
5 73 14.00 5 19.00 19 10.00
6 73 5.90 Ii 5.20
7 73 0.70 28 0.60
8 73 0.90 26 1.00
554881 9 72 2.00 24 1.90
10 72 2.70
1! 72 2.40
12 72 1.00 9 1.10
1 73 1.00
2 73 1.50 10 1.50
3 73 12.00 10 5.00
4 73 19.00 7 18.00 28 16.00
5 73 9.40 5 13.00 19 6.90
6 73 4.00 17 3.60
7 73 0.40 28 0.40
8 73 0.60 26 0.60
5S48Z2 9 72 0.50 24 0.40
10 72 0.60
11 72 0.50
12 72 0.20 9 0.30
1 73 0.20
2 73 0.40 9 0.40 10 0.40
3 73 3.60 10 1.30
4 73 10.00 7 9.00 28 8.30
5 73 4.10 5 5.90 19 3.00
6 73 1.80 17 1.50
7 73 0.10 28 0.10
8 73 0.20 26 0.20
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APPENDIX B
PHYSICAL and CHEMICAL DATA
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STORET RETRIEVAL DATE 74/09/30
554801
45 48 48.0 089 09 48.0
TOWN LINE LAKE
55 WISCONSIN
I1EPALES 2111202
3 0018 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNOUCTVY PH 1 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 HICROMHO SU HG/I MG/I MG/I MG/L P MG/I P
72/06/25 11 30 0000 17.0 8.6 36 100 7.50 29 0.040 0.050 0.042 0.030
11 30 0005 17.0
11 30 0010 16.0
11 30 0015 11.0 0.0 115 6.70 31 0.030 0.580 0.053 0.032
72/08/23 11 00 0000 36 99 6.70 27 0.040 0.150 0.082 0.045
ii 00 0004 20.3 6.0 94 6.80 26 0.030 0.060 0.074 0.040
11 00 0015 16.4 0.2 120 6.40 42 0.080 0.020 0.068 0.024
72/11/04 09 40 0000 24 90 6.50 18 0.210 0.270 0.109 0.049
09 40 0004 3.5 9.2 90 6.50 19 0.180 0.240 0.111 0.050
09 40 0010 3.5 9.2 90 6.50 20 0.200 0.270 0.109 0.049
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/25 11 30 0000 6.RJ
7?/08/23 11 00 0000 4.5J
72/11/04 09 40 0000 4.1J
J VALUE KNOWN TO BE IN ERROR
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APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
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ST RET RETRIEVAL DATE 74/10/02
554 8A1 LS5548A1
45 48 30.0 0R9 10 30.0
UNNAMED TRIBUTARY
55 15 THREE LAKES
I/TOWN LINE LAKE
Co PIWY 26 32 THREE LAKES STP MARSHLAND
LIEPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO?M’103 TOT KJEL NH3-N P1-105—0 15 PHOS—TOT
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L P
7?/09/24 09 15 0.177 1.500 0.051 0.005K 0.390
7?/11/05 0.046 1.150 0.034 0.105 0.140
7?/1’/09 0.310 1.310 0.370 0.120 0.260
73/01/13 0.940 0.064 0.050 0.130
73/02/09 0.357 7.000 1.040 0.320 0.460
73/03/10 ii 00 0.154 1.600 0.830 0.350 0.450
73/04/07 11 00 0.091 0.710 0.039 0.100 0.130
73/04/28 08 30 0.054 0.600 0.016 0.066 0.090
73/05/05 14 45 0.027 0.630 0.015 0.052 0.070
73/05/19 17 00 0.023 0.630 0.013 0.054 0.082
73/06/17 11 30 0.154 1.920 0.064 0.620
73/07/28 17 30 0.260 1.150 0.190 0.130 0.290
73/08/26 08 30 0.105 8.700 3.400 0.530 1.050
K VL LUF KNOWN TO E LESS
THAN I ,DICATEi)
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STORET RETRIEVAL DATE 74/10/02
554881 LS5548B1
45 49 00.0 089 09 30.0
UNNAMED TRIBUTARY
55 15 THREE LAKES
0/TOWN LINE LAKE
IRAIL NW SIDE LAKE TO OUTLET
JIEPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO? .M03 TOT KJEL NH3-N PHOS-OIS PHOS-TOT
FROM OF N—TOTAL N TOTAL OPTNO
TO DAY FEET MG/L MG/L MG/I MG/L P MG/L P
7?/09/24 09 30 0.084 1.350 0.050 0.005K 0.054
72/11/05 0.168 0.960 0.100 0.069 0.113
72/12/09 0.220 2.100 0.083 0.066 0.260
73/01/13 0.410 1.760 0.765 0.281 0.550
71/0’/ lO 0.350 1.000 0.144 0.080 0.115
73/03/10 13 00 0.350 0.650 0.140 0.04? 0.055
73/04/07 13 30 0.198 ?.200 0.083 0.058 0.100
73/04/28 16 00 0.105 2.200 0.056 0.032 0.070
73/05/05 08 45 0.110 1.800 0.052 0.036 0.080
73/05/19 17 15 0.010K 2.310 0.056 0.019 0.070
73/06/17 14 00 0.1?6 0.690 0.009 0.008 0.040
71/07/2t3 10 30 0.017 0.660 0.030 0.012 0.040
73/08/26 15 48 0.010K 0.580 0.035 0.019 0.045
K VALUE KNOWN TO LESS
PlAN INDICATED
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STO ET ? :TuFvAL T - 74/)q/40
71/t)7fl1 10 ‘ 0
73/0 /O7 0 4 no
CP (T) —
71/0 /07 C’ )
7 / 1 2/ 1 Q 11 (0
C’ (T ) —
73/12/10 1 .J0
7’ /01/07 n
74/fl3/I ‘JC, f)fl
74/114/ IS 11
74/3 /1 1’ 00
74/07/lA 10 OC’
554R50 PR554850
45 4 i 30.0 0 39 10 00.0
VLG OF THREE LAKES
55 15 THREE LAKES
1/TOWN LINE LAKE
UNNAMED TRIB
1 IEPALES
‘)ATE
FPOM
Tfl
TI .’ I)EPTH
1W
)AY FEET
P000700
DEPTH
2141204
0000 FEET
‘JO7 NO3
—T’)T AL
G/L
U • 1 30
,. L()
•
• I ‘ 0
U • 9?0
C .04w)
00625
TOT KJFL
N
6 / L
42. U0(
7p• 00 )
j4 J37
11.000
34 • flU 0
7 5.50u
50053
CONDUIT
FLOW—MG()
MONTHLY
00610
NH 3—N
TOTAL
17.000
9.400
1 .Q00
4.700
13.000
0 • ?00
00671
PrsOS-DI5
O Tr1O
MG/L P
5.200
3.990
2.?00
1.R i)
3.900
6.400
5.600
4
00665 50051
PHOS-TOT FLOW
RATE
M&/L P INST P .160
9.100
6.000
3.400
2.700
7.000
11. 300
R.I00
0.079 0.058
0.092 0.080
0.080
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