U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
SLXUM LAKE
LAKE COUNTY
ILLINOIS
EPA REGION V
WORKING PAPER No, 316
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440
-------
REPORT
ON
SLQCUMLAKE
LAKE COUNTY
ILLINOIS
EPA REGION V
WORKING PAPER No, 316
o
o
WITH THE COOPERATION OF THE
ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
AND THE
ILLINOIS NATIONAL GUARD
JUNE, 1975
730
-------
CONTENTS
Page
Foreword i i
List of Illinois Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 13
VI. Appendices 14
-------
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 [§303(e)], water
quality criteria/standards review [§303(c)L clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
-------
m
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 Illinois Environmental
Protection Agency for professional involvement and to the
Illinois National Guard for conducting the tributary sampling
phase of the Survey.
Dr. Richard H. Briceland, Director of the Illinois Environ-
mental Protection Agency; and Ronald M. Barganz, State Survey
Coordinator, and John J. Forneris, Manager of Region III, Field
Operations Section of the Division of Water Pollution Control,
provided invaluable lake documentation and counsel during the
Survey, reviewed the preliminary reports, and provided critiques
most useful in the preparation of this Working Paper series.
Major General Harold R. Patton, the Adjutant General of
Illinois, and Project Officer Colonel Daniel L. Fane, who directed
the volunteer efforts of the Illinois National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
-------
IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF ILLINOIS
LAKE NAME
Baldwin
Bloomington
Carlyle
Cedar
Charleston
Coffeen
Crab Orchard
Decatur
DePue
East Loon
Fox
Grass
Highland Silver
Holiday
Horseshoe
Long
Lou Yaeger
Marie
Old Ben Mine
Pistakee
Raccoon
Rend
Sangchris
Shelbyville
Slocum
Springfield
Storey
Vandalia
Vermilion
Wee Ma Tuk
Wonder
COUNTY
Randolph
McLean
Bond, Clinton, Fayette
Lake
Coles
Montgomery
Jackson, Williamson
Macon
Bureau
Lake
Lake
Lake
Madison
LaSalle
Madison
Lake
Montgomery
Lake
Franklin
Lake, McHenry
Marion
Franklin, Jefferson
Christian
Moultrie, Shelby
Lake
Sangamon
Knox
Fayette
Vermilion
Fulton
McHenry
-------
42 17-1
SLOCUM LAKE
Tributary Sampling Site
Lake Sampling Site
Sewage Treatment Facility
Drainage Area Boundary
1/2 1 11/2 Km.
-------
SLOCUM LAKE
STORE! NO. 1758
CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Slocum Lake is highly eutrophic.
It ranked 27th in overall trophic quality when the 31 Illinois
lakes sampled in 1973 were compared using a combination of six
parameters*. Twenty-nine lakes had less median total phosphorus,
28 had less median dissolved phosphorus, three had less and one
had the same median inorganic nitrogen, all of the other lakes
had less mean chlorophyll a_, and 26 had greater mean Secchi
disc transparency.
B. Rate-Limiting Nutrient:
The algal assay results indicate nitrogen limitation. The
lake data also indicate nitrogen limitation; i.e., mean N/P
ratios were less than 1/1 at all sampling times.
C. Nutrient Controllability:
1. Point sources—The phosphorus contribution from the
Wauconda wastewater treatment plant amounted to nearly 53% of
the total load reaching Slocum Lake during the sampling year.
Shoreline septic tanks were estimated to have contributed 0.2%
of the total load.
* See Appendix A.
-------
The present phosphorus loading rate of 11.18 g/m2/yr is far
greater than that proposed by Vollenweider (Vollenweider and
Dillon, 1974) as a eutrophic rate (see page 12). On the basis
of Survey data, it is very probable that the quality of Slocum
Lake will continue to deteriorate if the present loading rate
is maintained. Because of the highly eutrophic condition of
the lake, all phosphorus inputs should be minimized to the
greatest practicable extent.
2. Non-point sources—The phosphorus load from non-point
sources accounted for 47.0% of the total load reaching the lake
during the sampling year. The only measured tributary, Bangs
Creek, contributed 39.5%, and the ungaged drainage area was
estimated to have contributed 7.3% of the total phosphorus
load.
The phosphorus export rate of Bangs Creek was a high 210
kg/km2 during the sampling year (see page 12). This high rate
and the export N/P ratio of less than 2/1 are indicative of
unmeasured point sources or significant urban runoff in the
drainage. In this regard, it is noted that the measured
phosphorus contribution of the City of Wauconda (to Bangs Creek)
was about that expected on a per-capita contribution basis.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 0.87 kilometers2.
2. Mean depth: 1.2 meters.
3. Maximum depth: >1.5 meters.
4. Volume: 1.044 x 106 m3.
5. Mean hydraulic retention time: 121 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Bangs Creek 18.3 0.1
Minor tributaries &
immediate drainage - 3.4 <0.1
Totals 21.7 0.1
2. Outlet -
Unnamed Stream (A-l) 22.6** 0.1
C. Precipitation***:
1. Year of sampling: 112.3 centimeters.
2. Mean annual: 83.3 centimeters.
t Table of metric conversions--Appendix B.
tt Forneris, 1973.
* For limits of accuracy, see Morking Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
-------
III. LAKE WATER QUALITY SUMMARY
Slocum Lake was sampled three times during the open-water season
of 1973 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 usually from two depths (see map, page v).
During each visit, a single depth-integrated (near bottom to surface)
sample was collected for phytoplankton identification and enumeration;
and a similar sample was taken for chlorophyll a_ analysis. During the
first visit, a single 18.9-liter depth-integrated sample was collected
for algal assays. The maximum depth sampled was 1.5 meters.
The lake sampling results are presented in full in Appendix D and
are summarized in the following table.
-------
PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02»N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
1NORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
1ST SAMPLING ( 5/
1 SITES
RANGE MEAN
14.6 - 14.6 14.6
9.2 - 9.2 9.2
600. - 650. 625.
8.6 - 8.8 8.7
210. - 214. 212.
0.490 - 0.512 O.S01
0.271 - 0.276 0.273
0.120 - 0.130 0.125
0.070 - 0.080 0.075
1.900 - 2.100 2.000
0.200 - 0.200 0.200
2.030 - 2.220 2.125
109.9 - 109.9 109.9
0.5 - 0.5 0.5
1ICAL AND
9/731
MEDIAN
14.6
9.2
625.
8.7
212.
0.501
0.273
0.125
0.075
2.000
0.200
2.125
109.9
0.5
CHEMICAL CHARACTERISTICS FOR SLOCUM LAKE
STORET CODE 1758
2ND SAMPLING ( 8/ 7/73)
1 SITES
RANGE
25.1
10.2
75*.
9.3
288.
0.865
0.362
0.150
0.120
6.100
0.270
6.250
312.0
0.2
- 25.3
- 16.8
- 755.
9.4
- 298.
- 0.900
- 0.409
- 0.200
- 0.160
- 6.400
- 0.380
- 6.600
- 312.0
0.2
MEAN
25.2
13.5
755.
9.3
293.
0.882
0.385
0.175
0.150
6.250
0.325
6.425
312.0
0.2
MEDIAN
25.2
13.5
755.
9.3
293.
0.882
0.385
0.175
0.150
6.250
0.325
6.425
312.0
0.2
3RD SAMPLING (10/16/73)
1 SITES
RANGE
16.4
0.0
622.
9.2
214.
1.330
0.848
0.040
0.060
6.000
0.100
6.040
241.4
0.3
- 16.4
0.0
- 622.
9.2
- 214.
- 1.330
- 0.848
- 0.040
- 0.060
- 6.000
- 0.100
- 6.040
- 241.4
0.3
MEAN
16.4
0.0
622.
9.2
214.
1.330
0.848
0.040
0.060
6.000
0.100
6.040
241.4
0.3
MEDIAN
16.4
0..0
622.
9.2
214.
1.330
0.848
0.040
0.060
6.000
0.100
6.040
241.4
0.3
-------
B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
05/09/73
08/07/73
10/16/73
2. Chlorophyll a^ -
Sampling
Date
05/09/73
08/07/73
10/16/73
Dominant
Genera
1. Cyclotella §£.
2. Melosira sp.
3. Scenedesmus sp.
4. Anabaena sp.
5. Cryptomonas sp.
Other genera
Total
1. Aphanizomenon sp.
2. Melosira s£.
3. Stephanodiscus sp.
4. Cyclotella sp.
5. Microcystis sp.
Other genera
Total
1. Aphanizomenon sp.
2. Melosira sp.
3. Cyclotella sp.
4. Closterium sp.
5. Synedra sp.
Other genera
Total
Station
Number
01
01
01
Algal units
per ml
13,153
2,
1,
1,
1,
162
802
622
441
2.883
23,063
28,338
1,449
378
315
189
1,258
31,927
17,189
1,084
271
232
116
194
19,086
Chlorophyll a_
(yg/D
109.9
312.0
241.4
-------
0.145
0.195
0.195
0.145
0.610
0.610
1.610
1.610
20.7
20.1
50.5
44.4
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/1-dry wt.)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum. indicates that the potential primary productivity
of Slocum Lake was high at the time the sample was collected.
There was a significant increase in yield when only nitrogen
was added, but there was no change in yield when orthophos-
phorus alone was added. These results indicate nitrogen
limitation.
The lake data also indicate nitrogen limitation; i.e.,
the mean inorganic nitrogen/orthophosphorus ratios were less
than 1/1 at all sampling times, and nitrogen limitation would
be expected.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Illinois National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the high
runoff month of March when two samples were collected. Sampling was
begun in June, 1973, and was completed in May, 1974.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Illinois 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* (the outlet flow at station
C-l was insignificant, and loadings were not calculated). Nutrient
loads shown are those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("II" of U.S.G.S.) were estimated using the adjusted nu-
trient loads, in kg/km2/year, at station A-2 and multiplying by the
II area in km2.
The operator of the Wauconda wastewater treatment plant provided
monthly effluent samples and corresponding flow data.
* See Working Paper No. 175.
-------
A. Waste Sources:
1. Known municipal* -
Name
Pop.
Served
Treatment
Wauconda 6,000
2. Known industrial - None
trickling
fi1ter
Mean Flow
(mVd)
2,547.6
Receiving
Water
Bangs Creek
* Kuester, 1973.
-------
10
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Bangs Creek 3,850 39.5
b. Minor tributaries & immediate
drainage (non-point load) - 715 7.3
c. Known municipal STP's -
Wauconda 5,135 52.8
d. Septic tanks* - 15 0.2
e. Known industrial - None
f. Direct precipitation** - 15 0.2
Total 9,730 100.0
2. Outputs -
Lake outlet - Unnamed Stream
(A-l) 3,915
3. Net annual P accumulation - 5,815 kg.
* Estimate based on 45 shoreline dwellings; see Working Paper No. 175,
** See Working Paper No. 175.
-------
11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Bangs Creek 7,090 25.7
b. Minor tributaries & immediate
drainage (non-point load) - 1,315 4.8
c. Known municipal STP's -
Wauconda 17,810 64.4
d. Septic tanks* - 480 1.7
e. Known industrial - None
f. Direct precipitation** - 940 3.4
Total 27,635 100.0
2. Outputs -
Lake outlet - Unnamed Stream
(A-l) 18,585
3. Net annual N accumulation -9,050 kg.
* Estimate based on 45 shoreline dwellings; see Working Paper No. 175,
** See Working Paper No. 175.
-------
12
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr N/P Ratio
Bangs Creek 210 387 <2/l
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenweider (Vollen-
weider and Dillon, 1974). Essentially, his "dangerous" rate
is the rate at which the receiving water 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 considered one between "dangerous" and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/m2/yr 11.18 6.68 31.8 10.4
Vollenweider loading rates for phosphorus
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Slocum Lake:
"Dangerous" (eutrophic rate) 0.38
"Permissible" (oligotrophic rate) 0.19
-------
13
V. LITERATURE REVIEWED
Forneris, John J., 1973. Personal communication (lake morphometry).
IL Env. Prot. Agency, Springfield.
Kuester, Jeff (Chief Operator), 1973. Treatment plant questionnaire
(Wauconda STP). Wauconda.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Pub!. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
-------
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE
1703
1706
1708
1711
171.;
1714
1735
1726
1727
1733
1735
1739
1740
17*2
17*8
1750
1751
1752
1753
1754
1755
175t>
1757
1758
1759
1761
1762
1763
LAKE NAME
LAKE BLOOMINGTON
LAKE CARLYLE
LAKE CHARLESTON
COFFEEN LAKE
CRAb ORCHARD LAKE
LAKE OECATUR
LONG LAKE
LAKE LOU YAEGER
LAKE MARIE
PISTAKEE LAKE
RENO LAKE
LAKE SHELbYVlLLE
SILVER LAKE (HIGHLAND)
LAKE SPRINGFIELD
VERMILION LAKE
WONDER LAKE
LAKE STORY
OEPUE LAKE
LAKE SANGCHRIS
LAKE HOLIDAY
FOX LAKE
GRASS LAKE
EAST LOON LAKE.
SLOCUM LAKE
CEDAR LAKE
LAKE WtMATUK
RACCOON LAKE
tiALUrtlN LAKE
MEDIAN
TOTAL P
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
a
0
0
0
0
0
0
0
0
0
0
.050
.081
.160
.032
.032
.129
.704
.136
.098
.203
.071
.062
.226
.103
.109
.426
.072
.138
.050
.167
.219
.301
.076
.865
.029
.069
.10^
.04...
MEDIAN
INORG N
5.730
1.270
1.680
0.260
0.200
3.750
1.190
1.600
0.370
0*370
0.210
3.290
0.970
3.265
4.695
0.890
2.510
4.050
1.970
3.135
0.375
0.820
0.120
0.200
0.170
1.770
fa. 310
0.140
500-
MEAN SEC
464
477
490
456
482
479
482
4B9
467
485
471
461
489
483
481
486
459
490
475
485
486
481
450
487
400
466
484
4hl
.667
.889
.667
.222
.222
.571
.667
.583
.667
.667
.500
.333
.500
.385
.500
.000
.333
.000
.417
.167
.167
.000
.000
.333
.333
.333
.333
.167
MEAN
CHLdRA
26
17
12
7
59
43
49
10
39
75
23
17
5
13
31
98
17
58
19
51
63
83
22
221
5
7
19
11
.200
.367
.000
.700
.867
.000
.333
.662
.533
.867
.533
.161
.822
.013
.150
.533
.250
.833
.292
.217
.850
.500
.300
.100
.767
.967
.217
.333
15-
MIN DO
14
11
8
14
13
14
8
11
14
7
12
14
14
10
14
7
14
7
14
7
8
5
14
5
12
14
13
13
.800
.000
.400
.900
.bOO
.500
.800
.400
.700
.000
.700
.800
.800
.800
.200
.800
.800
.600
.500
.200
.800
.900
.900
.800
.800
.500
.800
.200
MEDIAN
OISS ORThO P
0.020
0.032
0.065
0.012
0.013
0.062
0.398
0.07b
0.057
0.062
0.012
0.019
0.057
0.059
0.050
0.132
O.U21
0.276
0.009
0.04b
0.083
0.093
O.OlK
0.362
0.013
0.031
0.020
0.007
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1764 LAKE VANOALIA
1765 OLD BEN MINE RESERVOIR
1766 HORSESHOE LAKE
MEDIAN
TOTAL P
0.116
0.930
0.127
MEDIAN
INORG N
0.480
0.205
0.705
500-
MEAN SEC
478.111
478.333
482.833
MEAN
CHLORA
11.27&
31.433
182.250
15-
MIN 00
It. 600
11.200
6.000
MEDIAN
OISS OkThO P
0.02J
0.575
0.018
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE
1703
1706
1708
1711
1712
1714
1725
1726
1727
1733
1735
1739
17*0
17*2
1748
1750
1751
1752
175J
1754
1755
1756
1757
1758
1759
1761
1762
1763
LAKE NAME
LAKE BLOOMINGTON
LAKE CARLYLE
LAKE CHARLESTON
COFFEEN LAKE
CRAB ORCHARD LAKE
LAKE DECATUR
LONG LAKE
LAKE LOU YAEGER
LAKE MARIE
PISTAKEE LAKE
RENO LAKE
LAKE SHELbYVILLE
SILVER LAKE (HIGHLAND)
LAKE SPRINGFIELD
VERMILION LAKE
WONDER LAKE
LAKE STORY
DEPUE LAKE
LAKE SANGCHRIS
LAKE HOLIDAY
FOX LAKE
GRASS LAKE
EAST LOON LAKE
SLOCUM LAKE
CEDAR LAKE
LAKE rfEMATUK
RACCOON LAKE
BALDWIN LAKE
MEDIAN
TOTAL P
88
63
37
97
67
40
7
30
60
27
77
83
20
53
50
13
73
10
88
33
23
17
70
3
100
80
57
93
( 26)
( 19)
( 11)
( 29)
( 20)
( 12)
( 2)
( 9)
( 18)
( 8)
( 23)
( 25)
( 6)
( 16)
( 15)
( 4)
( 22)
< 3)
( 26)
( 10)
( 7)
( 5)
( 21)
( D
( 30)
( 24)
< 17)
( 28)
MEDIAN
INORG N
0
40
7
77
90
13
43
37
68
68
80
17
47
20
3
50
27
10
30
23
63
53
100
87
93
33
73
97
( 0)
( 12)
I 2)
( 23)
( 27)
( 4)
( 13)
( 11)
( 20)
( 20)
( 24)
( 5)
( 14)
( 6)
( 1)
( 15)
( 8)
( 3)
( 9)
( 7)
( 19)
( 16)
I 30)
( 26)
( 28)
( 10)
( 22)
( 29)
500-
MEAN SEC
BO
63
0
93
43
53
40
7
73
23
70
83
10
33
47
20
90
3
67
27
17
50
97
13
100
77
30
87
I 24)
( 19)
( 0)
( 28)
( 13)
( 16)
( 12)
( 2)
( 22)
( 7)
I 21)
( 25)
( 3)
( 10)
( 14)
( 6)
( 27)
( 1)
( 20)
( 8)
( 5)
( 15)
( 29)
I 4)
( 30)
( 23)
( 91
( 261
MEAN
CHLORA
47
63
77
93
20
33
30
87
37
13
50
70
97
73
43
7
67
23
57
27
17
10
53
0
100
90
60
ao
I 14)
( 19)
I 23)
( 28)
( 6)
( 10)
( 9)
( 26)
( 11)
( 4)
( 15)
I 21)
( 29)
( 22)
( 13)
( 2)
I 20)
( 7)
( 17)
( 8)
( 5)
( 3)
( 16)
( 0)
( 30)
( 27)
I 18)
( 24)
15-
MIN DO
13
63
77
2
42
30
72
57
23
90
53
13
13
67
37
80
13
83
30
87
72
97
2
100
50
30
42
47
( 2)
( 19)
( 23)
( 0)
I 12)
( 8)
I 21)
( 17)
( 7)
( 27)
( 16)
( 2)
I 2)
( 20)
( ID
( 24)
( 2)
( 25)
( 8)
( 26)
1 21)
( 29)
( 0)
( 30)
( 15)
( 8)
( 121
( !•«)
MEDIAN
D1SS OHTHO P
68
53
27
92
85
32
3
23
42
32
92
73
42
37
47
13
63
10
97
50
20
17
77
7
85
57
68
100
( 20)
( 16)
( 8)
( 27)
( 25)
( 9)
( 1)
( 7)
( 12)
< 9)
( 27)
( 22)
( 12)
( 11)
( 14)
( 4)
( 19)
( 3)
( 29)
( 15)
( 6)
( 5)
( 23)
( 2)
( 25)
( 17)
( 20)
( 30)
INJE
NU
296
345
225
454
347
201
195
241
303
253
422
339
229
283
227
183
333
139
369
247
212
244
399
210
52d
367
3JO
504
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1764 LAKE VANDALIA
1765 OLD BEN MINE RESERVOIR
1766 HORSESHOE LAKE
MEDIAN
TOTAL P
47 (
0 (
43 (
14)
0)
13)
MEDIAN
INORG N
60
83
57
( 18)
( 25)
( 17)
500-
MEAN SEC
60 (
57 (
37 (
18)
17)
11)
MEAN
CHLORA
83
40
3
( 25)
( 12)
( 1)
15-
MIN DO
13
60
93
( 2)
( 18)
( 28)
MEDIAN
DISS OHInO P
60
0
80
( 18)
( 0)
( 24)
NO
323
240
313
-------
LAKES RANKED BY INDEX NOS.
WANK LAKE CODE LAKE NAME ' INDEX NO
1 1759 CEDAR LAKE 528
2 1763 BALDWIN LAKE 504
3 1711 COFFEEN LAKE 454
4 1735 RENO LAKE 422
5 1757 EAST LOON LAKE 399
6 1753 LAKE SANGCHRIS 369
7 1761 LAKE WEMATUK 367
8 1712 CRAB ORCHARD LAKE 347
9 1706 LAKE CARLYLE 345
10 1739 LAKE SHELBYVILLE 339
11 1751 LAKE STORY ' 333
12 1762 RACCOON LAKE 330
13 1764 LAKE VANDALIA 323
14 1766 HORSESHOE LAKE 313
15 1727 LAKE MARIE 303
16 1703 LAKE BLOOMINGTON 296
17 1742 LAKE SPRINGFIELD 2.83
18 1733 PISTAKEE LAKE 253
19 1754 LAKE HOLIDAY 247
20 1756 GRASS LAKE 244
21 1726 LAKE LOU YAEGER 241
22 1765 OLD 6EN MINE RESERVOIR 240
23 1740 SILVER LAKE (HIGHLAND) 229
24 1748 VERMILION LAKE 227
25 170d LAKE CHARLESTON 2?5
26 1755 FOX LAKE ' 212
27 175b SLOC'JM LAKE J]Q
28 17i<« LAr.E OECATu-f TO'
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29 1725 LONG LAKE 195
30 1750 WONDER LAKE 183
31 1752 OEPUE LAKE 139
-------
APPENDIX B
CONVERSIONS FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
-4
Cubic meters x 8.107 x 10 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR ILLINOIS
10/23/75
LAKE CODE 1758
SLOCUM LAKE
SUB-DRAINAGE
TRIBUTARY AREAISU KM)
1758A1
1758A2
1758ZZ
22.6
18.3
4.3
OF LAKE (SO KM) 22,
JAN
0.14
0.11
0.03
FEB
0.22
0.18
0.04
MAR
0.27
0.21
0.05
.6
APR
0.27
0.22
0.05
MAY
0.21
0.17
0.04
NORMALIZED FLOWS(CMS)
JUN JUL AUG
0.18
0.15
0.04
0.11
0.09
0.02
0.
0.
0.
05
04
01
SEP
0.04
0.03
0.01
OCT NOV
0.04 0.06
0.03 0.05
0.01 0.01
DEC MEAN
0.07 0.14
0.06 0.11
0.01 0.03
SUMMARY
OTAL
;UM OF
DRAINAGE AREA OF LAKE =
SUB-DRAINAGE AREAS =
22.6
22.6
TOTAL
TOTAL
FLOW
FLOW
IN =
OUT =
1.66
1.66
MEAN MONTHLY FLOWS AND DAILY FLOWS
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 75/10/33
175801
42 15 34.0 088 11 20.0
SLOCUM LAKE
17097 ILLINOIS
11EPALES
3
2111202
0008 FEET
DEPTH
DATE
FROM
TO
73/05/09
73/08/07
73/10/16
DATE
FROM
TO
73/05/09
73/08/07
73/10/16
TIME DEPTH
OF
DAY FEET
11 25 0000
11 25 0005
11 15 0000
11 15 0004
15 55 0000
TIME DEPTH
OF
DAY FEET
11 25 0000
11 25 0005
11 15 0000
11 15 0004
15 55 0000
00010
WATER
TEMP
CENT
14.6
14.6
25.3
25.1
16.4
00665
PHOS-TOT
MG/L P
0.490
0.512
0.865
0.900
1.330
00300
DO
MG/L
9.2
10.2
16.8
0.0
32217
CHLRPHYL
A
OG/L
109.9
312.0
241.4
00077
TRANSP
SECCHI
INCHES
7
P
I
S
18
8
12
00094
CNDUCTVY
FIELD
MICROMHO
650
600
755
754
622
00400
PH
SU
8.30
8.60
9.40
9.30
9.20
00410
T ALK
CAC03
MG/L
210
214
288
298
214
00610
NH3-N
TOTAL
MG/L
0.070
0.080
0.120
0.180
0.060
00625
TOT KJEL
N
MG/L
1.900
2.100
6.100
6.400
6.000
00630
N026.N03
N-TOTAL
MG/L
0.130
0.120
0.150
0.200
0.040
00671
PHOS-DIS
ORTHO
MG/L P
0.276
0.271
0.409
0.362
0.848
-------
APPENDIX E
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 75/10/23
1758A1
42 15 1500 08b 11 30oO
UNNAMED STREAM
17097 7o5 ts/AUCONDA
0/SLOCUM LAKE
BRDG IN W EDGE OF VILLAGE WILLIAM PARK
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/06/03
73/07/07
73/08/04
73/09/08
73/10/13
73/11/03
73/12/02
74/02/02
74/03/09
74/03/16
74/04/07
74/05/18
00630 00625
TIME DEPTH N02*»N03 TOT KJEL
OF N-TOTAL N
DAY FEET
15
11
11
14
11
12
14
11
12
11
13
11
15
15
55
10
50
10
00
45
45
00
55
30
MG/L
Oo
0»
Oo
0,
Oo
Oo
0,
0,
(Jo
Oo
0.
u.
026
010*
042
010K
027
090
380
980
400
200
016
280
MG/L
3o
40
70
50
60
60
3o
lo
30
3o
2o
2*
800
000
100
900
400
250
150
700
100
300
800
300
00610 00671 00665
NH3-N PHOS-DIS' PHOS-TOT
TOTAL ORTHO
MG/L
Oo
Oo
Oo
Oo
Oo
Oo
Oo
3o
Oo
Oo
0.
168
032
098
052
036
390
810
635
748
840
045
MG/L
Oo
Oo
Oo
0.
Oo
lo
0.
Oo
Oo
0.
0.
p
260
450
550
570
870
300
575
555
290
400
200
MG/L P
Oo470
Oo790
Oo810
Oo975
1.300
U450
loSOO
Oo650
OoSlO
0°65G
0.560
0.425
K VALUE KNOwfN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/10/23
1758A2
42 15 46.0 088 10 20.0
UNNAMED STREAM
17 7.5 WAUCONOA
I/SLOCUM LAKE
ST HWY 176 8RDG E OF LK SLOCUM .4 MI
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/06/03
73/07/07
73/08/04
73/09/08
73/10/13
73/11/03
73/12/02
74/01/05
74/02/02
74/03/09
74/03/16
74/04/07
74/05/18
00630
TIME DEPTH N02&N03
OF N-TOTAL
DAY FEET
15
11
11
14
11
12
13
10
12
12
10
13
10
00
05
45
00
35
06
30
20
10
40
55
45
40
MG/L
1
2
3
9
1
2
2
2
0
0
0
1
0
.370
.600
.000
.500
.500
.800
.520
.000
.756
.800
.588
.180
.528
00625
TOT KJEL
N
MG/L
6.300
10.500
11.000
16.000
2.600
2.200
3.700
3.650
1.150
1.900
1.600
2.700
1.900
00610 00671 00665
NH3-N PHOS-DlS PHOS-TOT
TOTAL ORTHO
MG/L
1.
6.
7.
14.
0.
0.
0.
1.
0.
0.
0.
1.
0.
500
000
100
800
590
460
560
040
200
350
310
050
400
MG/L
0.
5.
8.
8.
0.
1.
1.
0.
0.
0.
P
720
000
900
800
820
370
260
990
160
210
0.270
0.
0.
690
175
MG/L P
1
5
9
9
1
1
1
1
0
0
0
0
0
.150
.000
.400
.200
.100
.650
.300
.160
.200
.360
.345
.810
.370
-------
STORE! RETRIEVAL DATE 75/10/23
1758C1
42 15 50.0 088 11 58.0
UiMAMED STREAM
11 7.5 WAUCONOA
T/SLOCUM LAKE
LAMPHERE RD CULVERT W EDGE MYLETH PARK
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/06/03
73/07/07
73/08/04
73/09/08
73/10/13
73/11/03
73/12/02
74/01/05
74/02/02
74/03/09
74/03/16
74/04/07
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
UAY FEET
16
11
12
14
12
12
15
09
10
12
11
12
00
25
10
20
00
20
00
50
55
55
10
10
MG/L
1
0
0
0
0
0
1
3
2
1
0
0
.050
.013
.038
.018
.042
.280
.200
.600
.100
.520
.940
.980
MG/L
3.
6.
7.
7.
6.
4.
1.
1.
0.
0.
1.
2.
780
000
500
300
200
100
800
400
400
900
500
700
00610 00671 - 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
1.
1.
0.
0.
0.
0.
0.
0.
115
125
131
176
000
300
500
062
045
040
060
345
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
102
530
310
370
450
315
485
074
080
070
035
115
MG/L P
0.160
0.780
0.720
0.710
0.800
0.430
0.550
0.280
0.080
0.220
0.060
0.300
-------
STORET RETRIEVAL DATE 75/10/23
1758AA TF1758AA P006000
42 15 35.0 088 08 50.0
WACONOA
17097 7.5 WAUCONDA
T/SLOCUM LAKE
BANGS CREEK
11EPALES 2141204
4 0000 FEET DEPTH
DATE
FROM
TO
73/09/07
CP(T)-
73/09/07
73/10/12
CP(T)-
73/10/12
73/11/30
74/01/23
74/02/19
CP(T>-
74/02/19
74/04/29
CPU)-
74/04/29
74/05/20
CP(T)-
74/05/20
74/07/01
CP(T)-
74/07/01
74/07/24
CPU)-
74/07/24
74/08/30
00630
TIME DEPTH N02&N03
OF N-TOTAL
DAY FEET MG/L
07 30
8.300
15 30
08
16
15
16
08
15
08
15
08
15
07
15
07
15
11
00
00
30
00
00
30
00
00
00
30
30
00
30
30
15
8
7
4
1
0
1
2
4
0
.900
.800
.500
.160
.880
.090
.400
.000
.320
00625
TOT KJEL
N
MG/L
20.000
9.200
14.500
16.500
15.000
20.000
11.000
17.000
8.500
27.000
00610 00671 00665 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE FLOW-MOD
MG/L MG/L P MG/L P INST MGD MONTHLY
5.200 6.500 0.550 0.500
0.180
2.000
0.480
3.500
4.550
0.035
5.600
0.305
0.500
2.800
2.800
1.600
3.600
4.100
3.500
5.100
4.950
0.600
6.200
4.800
2.200
5.300
7.400
5.300
6.800
5.900
6.500
0
0
1
1
1
1
.0
0
0
.400
.800
.000
.200
.000
.000
.BOO
.600
.450
0.500
0.700
0.800
0.600
0.800
0.830
0.850
0.600
0.550
------- |