U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
DtLAVAN LAKE
WALMMH COUNTY
WISCONSIN
EPA REGION V
WORKING PAPER No, 3C
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
•itOPO 697.032.
-------
REPORT
ON
DELAVAN LAKE
WLMDRIH COUNTY
EF'A REGION V
WORKING PAPER No, 3C
WlTH THE COOPERATION OF THE
WISCONSIN DEPARTMENT OF NATURAL RESOURCES
AND THE
WISCONSIN NATIONAL GUARD
OCTOBER,
-------
1
CONTENTS
Page
Foreword ii
List of Wisconsin Study Lakes iv, v
Lake and Drainage Area Map vi
Sections
I. Conclusions 1
II. Introduction 4
III. Lake and Drainage Basin Characteristics 5
JV. Lake Water Quality Summary 6
V. Nutrient Loadings 11
VI. Literature Reviewed 16
VII. Appendices 17
-------
11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water lakes and
reservoirs.
OBJECTI VES
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 [ 314(a,b)],
and water quality monitoring [ lO6 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
-------
•l11
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 D. Erickson, who directed
the volunteer efforts of the Wisconsin National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
-------
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
-------
V
LAKE NAME COUNTY
Sinnissippi Dodge
Swan Columbia
Tainter Dunn
Tichigan Racine
Townline Oneida
Trout Vilas
Wapogassett Polk
Wausau Marathon
Wfllow Oneida
Winnebago Winnebago, Fond Du Lac,
Cal umet
Wisconsin Columbia
Wissota Chippewa
Yellow Burnett
-------
I
DELAVAN LAKE
Sewage Treatment Facility
x Lake Sampling Site
® Tributary Sampling Site
Direct Drainage Area Boundary
?Mi.
Scale
Lakelond Nursing
Home STP
/
4f4o
(/..
I)
L )
I
C
ciii
Wisconsin
ilap Locati Ofl 884O
/
)
42’35 —
88’30
-------
DELAVAN LAKE
STORET NO. 5513
I. CONCLUSIONS
A. Trophic Condition:
Survey data and the records of others show that Delavan
Lake is highly eutrophic.
B. Rate-Limiting Nutrient:
Algal assay results show Delavan Lake was nitrogen limited
at the time the sample was collected. The lake data indicate
nitrogen limitation at the other sampling times as well.
C. Nutrient Controllability:
1. Point sources--During the sampling year, Delavan Lake
received a total phosphorus load at a rate over three times the
rate proposed by Vollenweider (in press) as “dangerous”; i.e.,
a eutrophic rate (see page 15). Of that load, three point sources
are estimated to have contributed just over 75%.
In the following table the total phosphorus loading rates that
can be achieved by specified levels of phosphorus removal at all
three point sources are shown and compared to Vollenweider’s
suggested rates.
-------
2
Total P Loadin
% P Removal lbs/acre/yr g/m /yr
Existing 10.0 1.12
50 6.2 0.69
70 4.7 0.52
80 3.9 0.44
90 3.2 0.36
100 2.4 0.27
Vollenweider:
“Dangerous”
0 .32
“Permissible”
Of the above removal options, only 100% P removal would result
in a loading rate less than the “dangerous” rate. It appears that
level of removal could feasibly be achieved only by diversion.
At this time, there are five wastewater treatment facilities
in the Delavan Lake vicinity within a distance of about 10 miles
(two plants do not affect the lake). If the existing Delavan Lake
Sanitary District could be enlarged to accomodate all of these
discharges, as well as lakeside residences, with a single regional
treatment facility discharging to Turtle Creek downstream from the
lake, 100% removal would be effectively, and perhaps more economi-
cally, achieved.
It is concluded that 100% removal or complete diversion would
result in a marked improvement in the trophic condition of Delavan
Lake. The improvement could be enhanced--and the period of recovery
-------
3
shortened--if the outlet dam could be operated to permit maximum
flushing for two or three years.
The Wisconsin Department of Natural Resources has directed
the City of Elkhorn to institute phosphorus removal (Schraufnagel,
1974). It is estimated that 80% removal at Elkhorn would reduce
the loading rate to the lake to 5.4 lbs/acre/yr or 0.61 g/m 2 /yr.
It is believed this reduction in loading rate would result in a
marked reduction in the incidence and severity of nuisance
algal blooms in Delavan Lake.
2. Non-point sources--The nutrient export loads for Jackson
Creek (see page 15) were derived by subtracting estimated point-
source loads from the loads measured at station B-l . The annual
phosphorus export appears to be somewhat high but may be due to
underestimation of the point-source loads.
-------
4
II. INTRODUCTION
Delavan Lake is a natural lake in the lower Rock River drainage in
south-central Wisconsin. The level of the lake is controlled by a 14-
foot head dam on the outlet.
The lake is essentially a resort and residence lake. An estimated
6,500 permanent residents live in cottages and homes in the immediate
drainage area (less than one mile in almost 18 miles of frontage is in
public ownership).
Delavan Lake is managed for largemouth bass, panfish, and walleyes;
swimming (one public beach) and boating (one public ramp and seven boat
rental liveries) are other recreational activities. The proximity of the
lake to metropolitan areas insures a heavy recreational use.
-------
5
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry*:
1 . Surface area: 1 ,774 acres.
2. Mean depth: 25 feet.
3. Maximum depth: 56 feet.
4. Volume: 44,435 acre/feet.
5. Mean hydraulic retention time: 2.8 years.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage areat Mean flow 1
Jackson Creek 15.3 mi 2 7.8 cfs
Minor tributaries & 2
immediate drainage - 22.5 mi 14.0 cfs
Totals 37.8 mi 2 21.8 cfs
2. Outlet -
Turtle Creek 40.6 mi 2 tt 21 .8 cfs
C. Precipitation’ :
1. Year of sampling: 38.7 inches.
2. Mean annual: 30.7 inches.
* 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
mean monthly flows are accurate within ±35%.
It Includes area of lake.
ttt See Working Paper No. 1, “Survey Methods”.
-------
6
IV. LAKE WATER QUALITY SUMMARY
Delavan Lake was sampled three times during the open-water season
of 1972 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from three
stations on the lake and from one or more depths at each station (see
map, page vi). During each visit, a single depth-integrated (15 feet
or 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 8 feet at station 1, 4 feet at station 2, and 50 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 sumary
is based on all values.
For differences in the various parameters at the other sampling
times, refer to Appendix B.
-------
7
A. Physical and chemical characteristics:
FALL VALUES
(11/10/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 7.0 8.4 8.6 8.7
Dissolved oxygen (mg/i) 8.5 9.1 9.0 10.1
Conductivity (pnihos) 470 482 470 510
pH (units) 7.9 8.0 8.0 8.1
Alkalinity (mg/i) 162 167 167 174
Total P (mg/i) 0.135 0.140 0.141 0.143
Dissolved P (mg/i) 0.126 0.129 0.130 0.134
NO + NO (mg/i) 0.160 0.191 0.170 0.260
Am onia mg/i) 0.760 0.816 0.830 0.870
ALL VALUES
Secchi disc (inches)
13 50
36 126
-------
8
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
06/23/72 1. Oscillatoria 11,818
2. Anabaena 2,000
3. Dinobryon 1,364
4. Synedra 1,000
5. Polycystis 727
6. Scenedesmus 727
Other genera 2,000
Total 19,636
08/17/72 1. Oscillatoria 5,973
2. Anabaena 2,624
3. Cyclotella 950
4. Chroococcus 543
5. Melosira 272
Other genera 1 ,04l
Total 11 ,4O3
11/10/72 1 . Fragilaria 2,035
2. Flagellates 1,306
3. Dinobryon 829
4. Melosira 402
5. Navicula 251
Other genera 1 ,232
Total 6,055
-------
9
miting Nutrient Study:
Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N
___________ Conc. (mqIl) Conc. (mgIl )
0.110 0.790
0.116 0.790
0.122 0.790
0.134 0.790
0.170 0.790
0.170 10.790
0.110 10.790
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/l )
06/23/72 01 67.8
02 169.8
03 50.8
08/17/72 01 18.2
02 62.4
03 10.2
11/10/72 01 4.4
02 6.4
03 5.4
C. Li
1.
Maximum yield
( mg/l-dry wt. )
19.9
20.3
20.2
19.9
20.6
87.4
40.2
Spike (mg/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 -
The control yield of the assay alga, Selenastrurn capri—
cornutum , indicates that the potential primary productivity
of Delavan Lake was quite high at the time the sample was
collected. The assay results also show that the lake was
-------
10
nitrogen limited. Note the lack of significant response to
increased levels of orthophosphate, until nitrogen was also
added, and the significant increase in yield when only
nitrogen was added.
The lake data indicate nitrogen limitation at the other
sampling times as well (N/P ratios were 5/1 or less, and
nitrogen limitation would be expected).
D. Trophic Condition:
Survey data and the records of others (Leuschow, et al., 1970)
show that Delavan Lake is quite eutrophic. Survey limnologists
observed heavy algal blooms in June and August but noted that only
small, relatively isolated patches of rooted aquatic vegetation
were seen.
Wisconsin records show that Delavan Lake has been treated
with copper sulfate for algae control every year of the period
of record (1950-1970); over 85,000 pounds of the chemical were
applied in the 21-year period (Leuschow, 1972).
Of the 46 Wisconsin lakes studied, 39 had less mean total
and dissolved phosphorus, 37 had less mean inorganic nitrogen,
37 had less mean chlorophyll a, and only 3 had greater algal
assay control yields.
Essentially no oxygen was found in the hypolimnion in June
and August.
-------
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 vi), except for the high runoff 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 Wis-
consin District Office of the U.S. Geological Survey for the tributary
sites nearest the lake.
In this report, nutrient loads for the 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 imediate drainage” (“ZZ” of U.S.G.S.) were esti-
mated by using the nutrient loads, in lbs/m 2 /year, in Jackson Creek at
station B-i, minus the estimated point—source loads, and multiplying
by the ZZ area in mi 2 .
The operator of the Alpine Village Lodge wastewater treatment plant
provided monthly effluent samples and corresponding flow data. The City
of Elkhorn and the Lakeland Nursing Home declined participation in the
Survey, and nutrient loads from those sources were estimated*.
In the following loading tables, the loads given for Jackson Creek
are those measured at station B-i minus the estimated point-source loads.
* See Working Paper No. 1.
-------
12
A. Waste Sources:
1. Known municipal -
Pop.*
Name Served
Treatment
Mean
Flow (mgd)
Receiving
Water
E lkhorn 4,000
Alpine 600
Village Lodge
Lakeland 950
Nursing Home
Walworth Co. 900
Corr. Ctr.
Trickling
filter
Act, sludge
Act. sludge
Act. sludge
0.400*
0.055
0.095*
0.090*
Jackson Creek
Delavan Lake
Jackson Creek
No discharge
2. Industrial - None
known
* Estimated; see Working Paper No. 1.
-------
13
B. Annual Total Phosphorus Loading - Average Year:
1 . Inputs -
lbs P/ % of
Source yr total
a. Tributaries (non-point load) -
Jackson Creek 1,470 8.3
b. Minor tributaries & immediate
drainage (non-point load) - 2,160 12.2
c. Known municipal STP’s —
Elkhorn 10,000 56.6
Alpine Village Lodge 990 5.6
Lakeland Nursing Home 2,380 13.5
d. Septic tanks* - 380 2.2
e. Industrial - None known - -
f. Direct precipitation** - 280 1.6
Total 17,660 100.0
2. Outputs -
Lake outlet - Turtle Creek 7,910
3. Net annual P accumulation — 9,750 pounds
* Estimated 1,500 permanent lakeshore residents; see Working Paper No. 1.
** Estimated; see Working Paper No. 1
-------
14
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
lbs N/ % of
Source yr total
a. Tributaries (non-point load) -
Jackson Creek 24,810 18.7
b. Minor tributaries & immediate
drainage (non-point load) - 36,500 27.5
c. Known municipal STP’s -
Elkhorn 30,000 21.6
Alpine Village Lodge 3,030 2.3
Lakeland Nursing Home 7,120 5.4
d. Septic tanks* - 14,100 10.6
e. Industrial - None known - -
f. Direct precipitation** - 17,090 12.9
Total 132,650 100.0
2. Outputs -
Lake outlet - Turtle Creek 124,790
3. Net annual N accumulation - 7,760 pounds
* Estimated 1,500 permanent lakeshore residents; see Working Paper No. 1.
** Estimated; see Working Paper No. 1.
-------
15
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Jackson Creek 96 1 ,622
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-
phornetry permitted. A mesotrophic rate would be considered one
between “dangerous” and “permissible”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
lbs/acr /yr 10.0 5.5 74.8 4.4
grams/rn /yr 1.12 0.64 8.4 0.5
Volle weider loading rates for phosphorus
(g/m /yr) based on mean depth and mean
hydraulic retention time of Delavan Lake:
“Dangerous” (eutrophic rate) 0.32
“Permissible” (oligotrophic rate) 0.16
-------
16
VI. LITERATURE REVIEWED
Anonymous, 1968. Lake Delavan limnological survey, December, 1968.
Limnetics Inc., Milwaukee.
Ball, Joseph, 1973. Personal communication (revised area and volume
of Delavan Lake). Dept. of Natural Resources, Madison.
Ketelle, Martha J., and Paul D. Uttormark, 1971. Problem lakes in
the United States. EPA Water Poll. Control Res. Series, Proj.
16010 EHR.
Lee, G. F., 1972. Personal communication (trophic condition of
Delavan Lake). U. of Wisc. Water Res. Ctr., Madison.
Leuschow, Lloyd A., 1972. Biology and control of selected aquatic
nuisances in recreational waters. Tech. Bull #57, Dept. of
Natural Resources, Madison.
______________ James M. Helm, Donald R. Winter, and Gary W. Karl;
1970. Trophic nature of selected Wisconsin lakes. Trans. Wisc.
Acad. Sci., Arts, & Ltrs., Vol. 58.
McKersie, Jerome R., Robert M. Krill, Floyd F. Stautz, Thomas Kroehn,
and Richard Narf; 1971. Lower Rock River pollution investigation
survey. Dept. of Natural Resources, Madison.
Poff, Ronald J. and C. W. Threinen, 1961. Surface water resources of
Walworth County. Conservation Dept., Madison.
Schraufnagel , Francis H., 1974. Personal comunication (treatment
requirements in Delavan lake drainage). Dept. of Natural
Resources, Madison.
Stauffer, Robert E., 1973. Personal communication (Delavart Lake
phytoplankton, waste sources, shoreline residents). U. of
Wisc. Water Chem. Lab., Madison.
Vollenweider, Richard A., (in press). Input-output models. Schweiz
A. Hydrol
-------
17
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR WISCONSIN 9/30/74
LAKE CODE 5513 DELEVAN LAKE
TOTAL DRAINAGE AREA OF LAKE 40.60
SUB—DRAINAGE NORMALIZED FLOWS
TRIBUTARY AREA JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN
551341 40.60 15.60 17.50 54.50 41.80 22.40 30.20 13.60 9.70 11.70 12.60 20.40 11.70 21.80
551381 15.30 4.90 7.00 22.00 15.00 1.60 9.70 4.50 3.50 4.20 4.30 6.90 3.50 7.75
5513ZZ 25.30 10.00 11.00 35.00 27.00 14.00 20.00 8.90 6.40 7.70 8.30 13.00 7.40 14.05
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 40.60 TOTAL FLOW IN = 261.80
SUM OF SUB—DRAINAGE AREAS 40.60 TOTAL FLOW OUT = 261.70
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
551341 9 72 28.00 22 47.00
10 72 15.00 20 11.00
11 72 13.00 29 2.60
12 72 9.20 27 8.00
1 73 29.00 29 25.00
2 73 38.00 24 23.00
3 73 50.00 20 41.00
4 13 200.00 14 140.00 30 280.00
5 73 9.00 17 54.00 26 59.00
6 73 33.00 22 32.00
7 73 19.00 22 18.00
8 13 10.00 24 9.00
551381 9 72 4.70 22 7.80
10 12 2.60 20 1.80
II 12 2.30 29 4.50
12 72 1.60 27 1,40
1 73 8.00 29 7.40
2 73 8.00 24 7.40
3 73 16.00 20 12.00
4 73 93.00 14 64.00 30 120.00
5 73 34.00 11 20.00 26 22.00
6 73 11.00 22 10.00
7 73 6.30 22 5.90
8 73 2.90 24 2.60
55132Z 9 72 12.00 22 20.00
10 72 6.40 20 4.50
11 72 5.80 29 3.50
12 72 4.00 21 3.40
1 73 15.00 29 14.00
2 73 23.00 24 14.00
3 73 29.00 20 23.00
4 13 140.00 14 98.00 30 190.00
5 73 58.00 17 34.00 26 37.00
6 73 19.00 22 18.00
7 73 11.00 22 11.00
8 73 5.60 24 5.00
-------
APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 74/09/30
551301
42 37 18.0 088 35 24.0
LAKE DELAVAN
55 WISCONSIN
1 1EPALES
3
2111202
0000 FEET DEPTH
DATE
FROM
TO
72/06/23
77/08/17
72/11/10
TIME DEPTH
OF
DAY FEET
11 05 0000
15 45 0000
ii 25 0000
32217
CHLRPHYL
A
UG/L
67.8J
l8.2J
4.4J
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
WATER
DO
TRANSP
CWDUCTVY
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
NICROMNO
SU
MG/L
MG/L
MG/L
MG/L P
MG/L P
72/06/23
11 05 0000
18.4
10.6
72
460
8.80
129
0.050
0.070
0.139
0.109
72/08/17
15 45 0000
24
400
8.90
142
0.060
0.090
0.103
0.033
15 45 0004
23.9
11.1
395
8.90
138
0.090
0.090
0.092
0.032
15 45 0008
?3.8
11.2
405
8.90
141
0.090
0.090
0.111
0.037
72/11/10
ii 25 0000
60
495
8.10
168
0.210
0.800
0.138
0.127
11 25 0004
8.2
9.3
495
8.10
189
0.210
0.780
0.143
0.130
J VALUE KNOWN TO - E I ERROP
-------
STORET RETRIEVAL DATE 74/09/30
551302
42 37 00.0 088 36 48.0
DELAVAN LAt(E
55 WISCONSIN
1IEPALES 2111202
3 0000 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY PH T ALK NO2F NO3 NH3-N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES NICROMHO SU MG/L MG/L MG/L P4G/L P MG/L P
72/06/23 11 30 0000 18.4 10.2 36 440 8.90 175 0.060 0.030 0.161 0.110
7?/OR/17 16 10 0000 13 390 9.00 126 0.100 0.090 0.209 0.048
16 10 0004 28.0 13.4 385 9.10 126 0.090 0.090 0.241 0.061
72/11/10 11 35 0000 60 510 8.00 174 0.250 0.760 0.141 0.126
11 35 0004 7.0 10.1 500 8.00 171 0.260 0.770 0.141 0.130
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/23 11 30 0000 169.8J
7?/OR/17 16 10 0000 62.4J
72/fl/1O 11 35 0000 6.4J
J* V4LU KNOWN 10 T N F R O
-------
STORET RETRIEVAL DATE 74/09/30
551303
42 36 06.0 088 36 36.0
DELAVAN LAKE
55 WISCONSIN
1 IEPALES
3
2111202
0045 FEET DEPTH
DATE
FROM
TO
7?/06/23
72/08/17
72/11/10
TIME DEPTH
OF•
DAY FEET
11 40 0000
17 15 0000
11 00 0000
32217
CHLRPHYL
A
UG/L
50 .8J
10.2J
5.4.,
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
FEET
CENT
MG/L
P CHES
MICROMMO
SU
HG/I
MG/L
HG/L
P4G/L P
MG/I P
72/06/23
11 40 0000
19.6
10.8
24
450
8.90
188
0.100
0.030
0.129
0.110
11 40 0025
18.6
10.3
450
8.80
181
0.170
0.080
0.157
0.043
11 40 0040
9.4
0.4
480
7.60
179
0.090
0.220
0.352
0.346
77/08/17
17 15 0000
31
395
8.90
140
0.060
0.050
0.097
0.038
L7 15 0004
23.6
11.4
390
8.90
140
0.070
0.060
0.097
0.040
17 15 0015
22.8
9.4
400
8.80
145
0.060
0.060
0.091
0.037
17 15 0020
22.6
8.8
400
8.80
137
0.060
0.070
0.089
0.036
17 15 0030
19.8
1.4
500
7.40
149
0.180
0.085
0.145
0.182
17 15 0040
12.0
0.0
480
7.30
202
0.090
2.520
0.536
0.476
17 15 0050
10.0
0.0
500
7.20
214
0.080
3.320
0.660
0.566
77/11/10
11 00 0000
126
480
7.90
165
0.170
0.870
0.135
0.126
11 00 0004
8.7
8.7
470
8.00
162
0.160
0.840
0.138
0.128
11 00 0015
8.6
9.1
470
8.00
164
0.170
0.840
0.142
0.134
11 00 0025
8.6
9.2
470
8.00
165
0.160
0.830
0.141
0.130
11 00 0035
8.6
9.0
470
8.00
167
0.170
0.830
0.142
0.132
11 00 0045
8.6
8.8
470
8.00
164
0.170
0.840
0.143
0.132
11 00 0050
8.6
8.5
470
8.00
167
0.170
0.820
0.135
0.128
JQ VALU O4tJ TO IN ERRO e
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 74/10/0 ?
5513A1 LS5513A1
42 37 00.0 088 37 30.0
UNNAMED CREEK
55O9 15 DELAVAN
0/DELAVAN LAKE
Co HW ( XING I MI SE
11 EPALES
4
OF DELAVAN
2111204
0000 FEET
DEPTH
00630
00625
00610
00671
00665
DATE
TIME
DEPTH
NO NO3
TOT KJEL
Nr13—N
Pr1OS—DIS
PHOS—TOT
FROM
OF
N—TOTAL
N
TOTAL
ORTHO
TO
DAY
FEET
MG/L
MG/L
MG/L
MG/L P
M&/L P
7?/0 /??
15
30
0.054
2.050
0.066
0.050
0.13?
72/10/20
17
20
0.143
1.650
0.215
0.063
0.150
7?/1)/29
15
45
1.020
1.6 0
0.480
0.138
0.195
73/01/29
15
30
0.095
1.470
0.010
0.025
0.175
73/02/24
12
10
0.470
1.800
0.510
0.132
0.200
73/03/20
11
55
1.940
1.760
0.230
0.124
0.255
73/04/14
17
00
2.200
?.?00
0. ORR
0.176
0.210
73/04/30
15
10
0.620
1.300
0.270
0.105
0.17?
73/05/17
2.100
1.100
0.012
0.015
0.100
73/05/?6
1?
00
0.600
1.6M0
0.140
0. OPO
0.135
73/06/2?
14
45
0.110
1.800
0.031
0.180
73/07/22
12
40
2.900
1.900
0.?35
0.069
0.220
73/08/24
08
20
‘.500
1.470
0.075
0.044
0.145
-------
ST3P T ET ’1EvAI ‘IATr: ?4/n-, , 0
ASs511 3
‘+? 3 iO.u (j8t 36 tjO.0
L-’INF VL(j
i ’-) iS flELAVA’
1)/LAKI. DELAVAN
LAKE D LAVAi
11 I-P ’
4
00 600
?1412 04
0000 FEET DEPTH
0fl ’30
00625
00610
00671
00665
50051
50053
DATF
T1: iE
DEPTt-
NO? NO3
TOT KJEL
NH3—N
Pi-’OS--DIs
HO’ -TOT
FLOW
CONDUIT
FROM
OF
‘ —T TAL
N
TOTAL
OPT ()
PAIF
FLOw—MGO
TO
D Y
FEET
M (/L
MG/L
MG/L
MG/L P
MC,/t
INST M(D
MONTHLY
73/01/13
11
30
33.900
?.900
0.050
7.850
‘ 3.3 00
0.100
0.060
71/03/10
1!
30
du.400
1.900
0.07?
.5 S0
0.050
0.040
73/04/14
13
‘ P
5.100
2.600
0.093
2.700
3.450
0.100
0.150
73/05/1
16
30
5.lC0
7.700
0.100
?.7 00
2. ’ 30
0.050
0.050
7l/0 6 fO
15
30
13.700
0.810
0.135
2.400
?.5u0
0.050
0.040
73/0R/1 4
14
00
7.400
0.* 00
0.084
4.150
e .40fl
0.100
0.080
73/09/2’3
14
00
15.4 ) 0
1.400
0.440
5.200
7.600
0.050
0.040
71/)0/1
11
00
C.80O
O.95u
0.041
7.70C)
M.000
0.040
0.030
73/11/1?
t’+
ifl
1.150
10.500
1.050
3 .Sr)fl
h. 000
0.030
0.040
74/01/07
16
00
0.040
15.000
6.720
5.040
5.040
0.0 0
0.060
74/O?/16
1 ’
1)’)
31.000
1. 000K
6.000
1.400
9.200
0.030
0.020
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOPET ETPIEVAL DATE 74/10/02
551351 LS5513B1
42 38 30.0 088 33 30.0
JACKSON CREEK
55 1 DELAVAN
1/DELAVAN LAKE
CO PD RRDG 1.5 MI S OF ELKHOR ’J 8ELO SIP
1)E ALES 2111204
4 0000 FEET DEPTH
00630 00 ’?5 00610 00671 00665
DATE TIME DEPTH NO ? .NOJ TOT KJEL NH3—N Pr$OS—DjS PHOS—TOT
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET MG/L M(/L MG/L MG/L P MG/L P
72/09/2? 15 10 0.817 1.750 0.089 0.220 0.410
72/10/20 16 30 0.745 1.R00 0.590 0.275 0.290
72/11/29 16 10 1.160 1.320 0.670 0.710 0.790
72/12/27 08 45 1.7 0 5.100 2.800 0.320
71/01/29 15 30 2.900 2.800 0.665 0.490 0.820
73/02/24 1? 05 1.860 1.700 0.670 0.780 0.930
73/01/20 11 50 3.500 1.600 0.198 0.340 0.425
71/04/14 17 30 0.520 1.680 u.l8O 0.105 0.430
71/04/30 15 00 2.200 1.380 0.10 0.230 0.360
71/OS/li 17 15 2.300 1.500 0.440 0.450 0.560
73/05/26 13 15 2.900 2. 00 0.190 0.240 0.315
71/06/22 14 45 0.132 2.100 0.130 1.050
73/07/22 12 10 1.340 3.700 1.580 1.900 2.100
73/04/24 08 00 7.100 3.400 1.400 ‘.600 2.P00
-------
STOPET RETRIEVAL DATE 74/10/0?
55134? LS5513B2
4? 3 30.0 ORR 31 30.0
JACKSON C EFK
55 15 OELAVAN
T/DELAVAN LAKE
CO RD AING SSE OF ELKi-IORN At3OV STP
L1EPALES 2111204
4 0000 FEET DEPTH
00630 006?S 00610 00671 00665
OATE TIME DEPTH NO? NO3 TOT KJEL NH3—N PHOS—OTS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FFET MG/L hi(/L Mr,/L MG/L P M /L P
72/09/2? 14 20 0.910 .600 0.132 0.0?4 0.2 ,0
72/10/20 17 00 ‘.000 1.200 0.066 0.039 0.084
72/11/29 1515 1.160 0.100K 0.015 0.01
72/12/27 08 30 2.500 0.990 0.189 0.042 0.105
73/01/29 15 35 2.900 ?.100 0.170 0.310 0.400
73/02/24 12 00 2.100 0.660 0.200 0.048 0.0 0
71/01/20 11 35 3.800 1.400 0.037 0.117 0.483
71/04/14 16 30 2.400 ?.400 0.126 0.15? 0.402
73/04/30 15 45 2.100 1.050 0.054 0.160 0.220
73/05/17 16 40 2.500 0.R10 0.023 0.040 0.075
73/05/26 1? ?0 2.800 0.930 0.029 0.110 0.145
73/06/?? 14 15 0.02? 1.050 0.013 0.00 5K 0.185
73/07/2? 1? 20 0.147 0.t,80 0.084 0.035 0.070
73/08/24 09 20 0.069 2.000 0.176 0.069 0.090
‘c. VAL(Jt. ‘ O JN TO ‘ LESS
Tri N IjI)ICATED
------- |