U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
ROSS LAKE
GLADWIN COUNTY
MICHIGAN
EPA REGION V
WORKING PAPER No, 209
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
ilGPO 697.032
-------
REPORT
ON
ROSS LAKE
GLADWIN COUNTY
MICHIGAN
EPA REGION V
WORKING PAPER No, 209
WITH THE COOPERATION OF THE
MICHIGAN DEPARTMENT OF NATURAL RESOURCES
AND THE
MICHIGAN NATIONAL GUARD
FEBRUARY, 1975
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CONTENTS
Page
Foreword i i
List of Michigan Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 8
V. Literature Reviewed 13
VI. Appendices 14
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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.
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)]s water
quality criteria/standards review [§303(c)], 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 Michigan Department of
Natural Resources for professional involvement and to the
Michigan National Guard for conducting the tributary sampling
phase of the Survey.
A. Gene Gazlay, former Director, and David H. Jenkins, Acting
Director, Michigan Department of Natural Resources; and Carlos
Fetterolf, Chief Environmental Scientist, and Dennis Tierney,
Aquatic Biologist, Bureau of Water Management, Department of Natural
Resources, provided invaluable lake documentation and counsel during
the course of the Survey. John Vogt, Chief of the Bureau of Environ-
mental Health, Michigan Department of Public Health, and his staff
were most helpful in identfying point sources and soliciting municipal
participation in the Survey.
Major General Clarence A. Schnipke (Retired), then the Adjutant
General of Michigan, and Project Officer Colonel Albert W. Lesky,
who directed the volunteer efforts of the Michigan National Guardsmen,
are also gratefully acknowledged for their assistance to the Survey.
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IV
LAKE NAME
Allegan Res.
Barton
Belleville
Betsie
Brighton
Caro Res.
Charlevoix
Chemung
Constantine Res
Crystal
Deer
Ford
Fremont
Higgins
Holloway Res.
Houghton
Jordon
Kent
Long
Macatawa
Manistee
Mona
Muskegon
Pentwater
Pere Marquette
Portage
Randall
Rogers Pond
Ross
St. Louis Res.
Sanford
Strawberry
Thompson
Thornapple
Union
Whi te
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MICHIGAN
COUNTY
Allegan
Kalamazoo
Wayne
Benzie
Livingston
Tuscola
Charlevoix
Livingston
St. Joseph
Montcalm
Marquette
Washtenaw
Newago
Roscommon
Genesee, Lapeer
Roscommon
Ionia, Barry
Oakland
St. Joseph
Ottawa
Manistee
Muskegon
Muskegon
Oceana
Mason
Houghton
Branch
Mecosta
Gladwin
Gratiot
Midland
Livingston
Livingston
Barry
Branch
Muskegon
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ROSS LAKE
x Lake Sampling Site
Sewage Treatment Facility
0 IMi.
-------
ROSS LAKE
STORE! NO. 2673
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Ross Lake is eutrophic. Of the
35 Michigan lakes sampled in November when essentially all were
well-mixed, 13 had less mean total phosphorus, 14 had less mean
dissolved phosphorus, and 14 had less mean inorganic nitrogen;
of all 41 Michigan lakes sampled, 17 had less mean chlorophyll
a_, but only four had less mean Secchi disc transparency*.
Survey limnologists indicated that the water was very turbid
with moderate algal blooms occurring during the June and September
sampling visits.
B. Rate-Limiting Nutrient:
There was a significant nutrient loss in the algal assay sam-
ple, and the results are not indicative of conditions in the lake
at the time the sample was collected. However, the lake data
indicate that nitrogen was limiting in June and September, and
phosphorus was limiting in November.
C. Nutrient Controllability:
1. Point sources—During the sampling year, Ross Lake
received a total phosphorus load at a rate more than five times
See Appendix A.
-------
the rate proposed by Vollenweider (in press) as "dangerous";
i.e., a eutrophic rate (see page 12). However, the mean
hydraulic retention time of Ross Lake is a very short two days;
and, with such "flow-through" conditions, it is very unlikely
that Vollenweider's model is applicable.
It is calculated that the City of Gladwin contributed
about 16% of the total phosphorus load to Ross Lake during
the sampling year. While provision of 85% phosphorus removal
at this source would only reduce the loading rate to about
2
14.8 g/m /yr, if additional reduction of phosphorus from
"non-point" sources can be achieved, it is likely that the
incidence and severity of nuisance algal blooms in Ross Lake
would be reduced (see below).
2. Non-point sources (see page l2)--During the sampling
year, the phosphorus exports of the South and Middle Branches
of the Tobacco River were quite high as compared to the North
Branch. Particularly in the case of the South Branch, it
appears that point sources beyond the 25-mile limit of the
Survey* may be involved (note that the export N/P ratio of this
stream is about 14/1, whereas the export N/P ratio of the North
Branch is 32/1.
See Working Paper No. 1, "Survey Methods, 1972".
-------
Whatever the source of the phosphorus input to the South
Branch, it appears that significant improvement in the trophic
condition of Ross Lake will require at least some reduction of
this load.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry :
1. Surface area: 294 acres.
2. Mean depth: 5 feet.
3. Maximum depth: 15 feet.
4. Volume: 1,470 acre/feet.
5. Mean hydraulic retention time: 2 days
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Name Drainage area* Mean flow*
2
S. Branch, Tobacco River 157.0 mi ~ 113.3 cfs
Middle Branch, Tobacco River 34.5 mi'2 31.5 cfs
N. Branch, Tobacco River 73.7 mi ~ 75.1 cfs
Cedar River 121.0 mi 101.5 cfs
Minor tributaries & 2
immediate drainage - 100.3 mi 36.8 cfs
Totals 486.5 mi2 358.2 cfs
2. Outlet -
Tobacco River 487.0 mi2** 358.2 cfs
C. Precipitation***:
1. Year of sampling: 31.8 inches.
2. Mean annual: 33.1 inches.
t Fetterolf, 1973.
* Drainage areas are accurate within ±5%; mean daily flows for 74% of the
sampling sites are accurate within ±25% and the remaining sites up to
±40%; and mean monthly flows, normalized mean monthly flows, and mean
annual flows are slightly more accurate than mean daily flows.
** Includes area of lake.
*** See Working Paper No. 1, "Survey Methods, 1972".
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III. LAKE WATER QUALITY SUMMARY
Ross 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 two stations on
the lake and from a number of depths at each station (see map, page v).
During each visit a single depth-integrated (near bottom to surface)
sample was composited from the two stations for phytoplankton identifica-
tion and enumeration; and during the second 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 10 feet at sta-
tion 1 and 6 feet at station 2.
The results obtained are presented in full in Appendix C, and the
data for the fall sampling period, when the lake essentially was 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 C.
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A.
Physical and chemical characteristics:
FALL VALUES
Parameter Minimum
Temperature (Cent.) 3.7
Dissolved oxygen (mg/1) 10.8
Conductivity (pmhos) 430
pH (units) 8.0
Alkalinity (mg/1) 199
Total P (mg/1) 0.032
Dissolved P (mg/1) 0.020
N0? + ML (mg/1) 0.300
Ammonia fmg/1) 0.070
B.
Secchi disc (inches) 29
Biological characteristics:
(11/14/72)
Mean
3.9
11.2
455
8.0
213
0.034
0.021
0.377
0.082
ALL VALUES
35
Median
3.9
11.2
445
8.0
213
0.034
0.022
0.380
0.085
31
1. Phytoplankton* -
Sampling
Date
09/20/72
11/14/72
Dominant
Genera
1. Di nobryon
2. Flagellates
3. Cryptomonas
4. Melosira
5. Fragilaria
Other genera
Total
1. Flagellates
2. Navicula
3. Cymbella
4. Achnanthes
5. Dinobryon
Other genera
Total
Maximum
4.2
11.6
500
8.1
226
0.035
0.022
0.450
0.090
48
Number
per ml
1
,121
850
615
307
271
670
3,834
187
163
151
139
84
494
1,218
* The June sample was lost in shipment.
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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 (yg/1)
06/14/72 01 19.7
02 16.2
09/20/72 01 13.5
02 11.3
11/14/72 01 0.8
02 0.8
C. Limiting Nutrient Study:
There was a loss of 59% of the dissolved phosphorus in the
assay sample between the time of collection and the beginning
of the assay, and the assay results are not representative of
conditions in the lake at the time the sample was taken.
The lake data indicate nitrogen limitation in June and Sep-
tember (N/P ratios = 9/1 and less) but phosphorus limitation in
November (N/P = 22/1).
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8
IV. NUTRIENT LOADINGS
(See Appendix D for data)
For the determination of nutrient loadings, the Michigan National
Guard collected monthly near-surface grab samples from each of the tribu-
tary sites indicated on the map (page v), except for the high runoff
months of May, June, and July when two samples were collected. Sampling
was begun in October, 1972, and was completed in September, 1973.
Through an interagency agreement, stream flow estimates for the year
of sampling and a "normalized" or average year were provided by the Michi-
gan District Office of the U.S. Geological Survey for the tributary sites
nearest the lake.
In this report, nutrient loads for sampled tributaries were determined
by using a modification of a U.S. Geological Survey computer program for
calculating stream loadings*. Nutrient loadings for unsampled "minor
tributaries and immediate drainage" ("ZZ" of U.S.G.S.) were estimated
2
by using the means of the nutrient loads, in lbs//mi /year, at stations C-l,
2
D-l, and E-l and multiplying the means by the ZZ area in mi .
The operator of the Gladwin wastewater treatment plant provided monthly
effluent samples and corresponding flow data.
In the following tables, the nutrient loads given for the Cedar River
are those measured at station F-l minus the Gladwin loads.
* See Working Paper No. 1.
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A. Waste Sources:
1. Known municipal* -
Name
Pop.
Served Treatment
Mean Recei vi ng
Flow (mgd) Water
Gladwin 2,071
2. Known industrial - None
prim.
clarifier
0.682
Cedar River
* Kooistra, 1973.
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10
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
Ibs P/ % of
Source yr total
a. Tributaries (non-point load) -
S. Branch, Tobacco River 19,690 44.1
Middle Br., Tobacco River 2,850 6.4
N. Branch, Tobacco River 4,490 10.1
Cedar River 1,570 3.5
b. Minor tributaries & immediate
drainage (non-point load) - 8,990 20.1
c. Known municipal STP's -
Gladwin 7,010 15.7
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation* - 50 0.1
Total 44,650 100.0
2. Outputs -
Lake outlet - Tobacco River 38,220
3. Net annual P accumulation - 6,430 pounds
* See Worki rig Paper No. 1.
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11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
Ibs N/ % of
Source r _ total
a. Tributaries (non-point load) -
S. Branch, Tobacco River 275,750 28.7
Middle Br., Tobacco River 83,000 8.6
N. Branch, Tobacco River 143,300 14.9
Cedar River 225,680 23.5
b. Minor tributaries & immediate
drainage (non-point load) - 204,140 21.3
c. Known municipal STP's -
Gladwin 25,600 2.7
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation* - 2,830 0.3
Total 960,300 100.0
2. Outputs -
Lake outlet - Tobacco River 884,970
3. Net annual N accumulation - 75,330 pounds
* See Working Paper No. 1.
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12
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
o
Tributary Ibs 'P/mi'Vyr Ibs N/mi /yr
S. Branch, Tobacco River 125 1,756
Middle Br., Tobacco River 83 2,406
N. Branch, Tobacco River 61 1,944
Cedar River 13 1,865
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 oligo-
trophic 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 very short hydraulic retention times.
Total Phosphorus Total Nitrogen
Units
Ibs/acre/yr
grams /m/yr
Total
151.9
17.02
Accumulated
21.9
2.45
Total
3,266.3
366.1
Accumulated
256.2
28.7
e
Vollenweider loading rates for phosphorus
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Ross Lake:
"Dangerous" (eutrophic rate) 3.10
"Permissible" (oligotrophic rate) 1.55
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13
V. LITERATURE REVIEWED
Fetterolf, Carlos, 1973. Personal communication (lake morphometry).
MI Dept. of Nat. Resources, Lansing.
Kooistra, Ronald D., 1973. Wastewater treatment plant questionnaire.
MI Dept. of Nat. Resources, Lansing.
Vollenweider, Richard A. (in press). Input-output models. Schweiz.
Z. Hydro!.
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VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
26AO HOLLOWAY RESERVOIR
26Ai CARO RESERVOIR
26A2 BOARDMAN HYDRO POND
2603 ALLEGAN LAKE
2606 BARTON LAKE
2609 BELLEVILLE LAKE
2610 BETSIE LAKE
2613 BRIGHTON LAKE
2617 LAKE CHAHLEVOIX
2618 LAKE CHEMUNG
2621 CONSTANTINE RESERVOIR
2629 FORD LAKE
2631 FREMONT LAKE
26*0 JORDAN LAKE
26*3 KENT LAKE
2648 LAKE MACATAWA
26*9 MANISTEE LAKE
2659 MUSKEGON LAKE
2665 PENTWATER LAKE
2671 RANDALL LAKE
2672 ROGERS POND
2673 ROSS RESERVOIR
267* SANFORD LAKE
2683 THORNAPPLE LAKE
2685 UNION LAKE
2688 WHITE LAKE
2691 MONA LAKE
2692 LONG LAKE
MEAN
TOTAL P
0.062
0.117
0.006
0.123
0.121
0.118
0.025
0.109
0.007
0.0**
0.027
0.105
0.372
0.180
0.040
0.197
0.018
0.087
0.027
0.2*6
0.026
0.034
0.016
0.0*2
0.083
0.027
0.307
0.163
-rMLL VBLUC.3-
MEAN
OISS P
0.0*3
0.022
0.005
0.057
0.086
0.0*8
0.008
0.073
0.006
0.01*
0.008
0.058
0.3*2
0.1**
0.015
0.120
0.010
0.0*3
0.017
0.183
0.015
0.021
0.008
0.032
0.06*
0.019
0.2*1
0.1*8
MEAN
INORG N
1.461
3.835
0.3S8
1.168
1.489
1.420
0.273
1.015
0.230
0.132
0.910
1.536
1.406
1.998
0.417
2.358
0.30*
0.*69
0.*96
0.818
0.183
0.460
0.307
1.737
1.252
0.367
0.963
0.7*9
500-
MEAN SEC
*39.37S
473.000
363.500
*70.222
456.167
*65.250
461.667
456.000
351.250
404.333
456.167
*56.167
4*1.667
427.667
455.000
477.600
451.333
436.***
430.667
457.333
435.500
*65.333
458.750
4*2.833
*55.500
417.778
451.667
418.400
MEAN
CHLORA
10.678
11.967
1.267
20.311
27.800
28.262
4.567
44.233
3.008
13.483
39.317
14.733
28.500
20.517
33.9*4
25.600
6.317
9.511
16.083
27.217
8.133
10.383
13.791
14.650
15.667
9.211
27.783
10.067
15-
MIN DO
9.200
9.500
6.600
12.600
14.850
R.200
7.400
7.500
9.240
14.800
7.500
14.000
14.800
14.900
13.000
12.200
11.3dO
14.800
14.800
8.020
9.600
8.200
8.300
10.800
8.200
13.400
14.100
13.600
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
2693 ST LOUIS RESERVOIR
2694 CRYSTAL LAKE
2695 HIGGINS LAKE
2696 HOUGHTON LAKE
2697 THOMPSON LAKE
2698 PERE MARQUETTE LAKE
2699 STRAWBERRY LAKE
MEAN
TOTAL P
0.134
0.009
0.007
0.018
0.043
0.032
0.069
-r ALL. V«l.Ut3-
MEAN
DISS P
0.093
0.006
0.005
0.008
0.029
0.024
0.050
MEAN
INORG N
1.227
0.164
0.058
0.136
0.436
0.346
0.567
500-
MEAN SEC
462.667
380.000
268.500
420.833
407.889
448.667
419.800
MEAN
CHLORA
5.583
2.986
1.043
9.217
11.967
11.833
11.117
15-
MIN t)0
8.420
13.000
9.400
8.200
14.800
8.600
13.600
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PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
26AO HOLLOWAY RESERVOIR
26Ai CARO RESERVOIR
26A2 BOARDMAN HYDRO POND
2603 ALLEGAN LAKE
2606 BARTON LAKE
2609 BELLEVILLE LAKE
2610 BETSIE LAKE
2613 BRIGHTON LAKE
2617 LAKE CHARLEVOIX
2618 LAKE CHEMUNG
2621 CONSTANTINE RESERVOIR
2629 FORD LAKE
2631 FREMONT LAKE
2640 JORDAN LAKE
26*3 KENT LAKE
26*8 LAKE MACATAWA
26*9 MANISTEE LAKE
2659 MUSKEGON LAKE
2665 PENTWATER LAKE
2671 RANDALL LAKE
2672 ROGERS POND
2673 RDSS RESERVOIR
2674 SANFORD LAKE
2683 THORNAPPLE LAKE
26B5 UNION LAKE
2688 WHITE LAKE
2691 MONA LAKE
2692 LONG LAKE
MEAN MEAN
TOTAL P DISS P
46
29
97
20
23
26
77
31
91
49
71
34
0
11
57
9
80
37
69
6
74
60
86
54
40
66
3
14
( 16)
( 10)
( 34)
( 7)
( 8)
( 9)
( 27)
( 11)
( 32)
< 17)
( 25)
( 12)
( 0)
( 4)
( 20)
( 3)
( 28)
( 13)
( 24)
< 2)
( 26)
( 21)
( 30)
( 19)
( 14)
( 23)
( 1)
( 5)
43
54
97
31
20
37
77
23
91
71
83
29
0
11
69
14
74
40
63
6
66
57
80
46
26
60
3
9
( 15)
( 19)
( 34)
( 11)
( 7)
( 13)
( 27)
( 8)
( 32)
.( 25)
( 29)
( 10)
( 0)
( 4)
( 24)
( 5)
( 26)
1 14)
( 22)
( 2)
( 23)
( 20)
( 28)
( 16)
( 9)
( 21)
( 1)
( 3)
MEAN
INORG N
17
0
69
31
14
20
80
34
83
94
40
11
23
6
63
3
77
54
51
43
86
57
74
9
26
66
37
46
( 6)
( 0)
( 24)
( 11)
( 5)
( 7)
( 28)
( 12)
( 29)
( 33)
( 14)
( 4)
( 8)
( 2)
( 22)
( 1)
( 27)
( 19)
I 18)
( 15)
( 30)
( 20)
( 26),
( 3)
( 9)
( 23)
( 13)
( 16)
500-
MEAN SEC
57
3
91
6
29
11
17
34
94
86
29
29
54
69
40
0
46
60
66
23
63
9
20
51
37
80
43
77
( 20)
( 1)
( 32)'
( 2)
( 9)
( 4)
( 6)
< 12)
( 33)
( 30)
( 9)
( 9)
( 19)
( 24)
( 14)
( 0)
< 16)
( 21)
( 23)
( 8)
( 22)
( 3)
( 7)
( 18)
< 13)
( 28)
( 15)
( 27)
MEAN
CHLORA
60 1
49 (
94 (
29 (
14 I
11 I
86 I
0 (
89 I
46 I
3 (
37 (
9 1
26 1
6 1
23 1
80 I
69 i
31 i
20 i
77
63
43
40
34
74
17
66
: 21)
17)
33)
: 10)
5)
4)
30)
0)
3D
16)
: D
1 13)
I 3)
t 9)
1 2)
! 8)
I 28)
I 24)
1 ID
1 7)
I 27)
( 22)
( 15)
( 14)
( 12)
( 26)
( 6)
( 23)
15-
MIN DO
63
54
97
40
3
79
94
90
60
11
90
23
11
0
36
43
46
11
11
86
51
79
71
49
79
31
20
27
( 22)
( 19)
( 34)
( 14)
( 1)
(' 26)
( 33)
( 31)
( 21)
( 2)
( 31)
( 8)
( 2)
( 0)
( 12)
( 15)
( 16)
( 2)
( 2)
( 30)
( 18)
( 26)
( 25)
( 17)
( 26)
( 11)
( 7)
( 9)
INDEX
NO
266
189
545 '
157
103
184
431
212
508
357
316
163
97
123
271
92
403
271
291
184
417
3
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
2693 ST LOUIS RESERVOIR
2694 CRYSTAL LAKE
2695 HIGGINS LAKE
2696 HOUGHTON LAKE
2697 THOMPSON LAKE
2698 PERE MARQUETTE LAKE
2699 STRAWBERRY LAKE
MEAN MEAN
TOTAL P DISS P
17
89
94
83
51
63
43
( 6)
( 31)
( 33)
( 29)
< 18)
( 22)
( 15)
17
89
94
86
49
51
34
( 6)
( 31)
( 33)
( 30)
( 17)
( 18)
( 12)
MEAN
INORG N
29
89
97
91
60
71
49
( 10)
( 31)
( 34)
( 32)
( 21)
( 25)
( 17)
bOO-
MEAN SEC
14
89
97
71
83
49
74
( 5)
( 31)
( 34)
( 25)
( 29)
( 17)
( 26)
MEAN . 15-
CHLORA MIN
83 i
91 i
97
71
51 i
54 i
57 i
I 29)
( 32)
( 34)
( 25)
( 18)
( 19)
1 20)
69 (
36 (
57 (
79 (
11 (
66 (
27 (
00
24)
12)
20)
26)
2)
23)
9)
INDEX
NO
2^9
483
536
481
305
354
284
-------
APPENDIX B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR MICHIGAN
2/3//S
LAKE CODE 2673
ROSS LAKE
TOTAL DRAINAGE AREA OF LAKE(SO MI)
SUB-DRAIMAGE
TRIBUTARY AREACSQ MI)
JAN
FtB
487.00
MAR
APK
MAY
NOKMALIZEO FLOWS(CFS)
JUN JUL AJG
SEP
OCT
NOV
DEC
MEAN
2673A1
2673C1
267301
2673E1
2673F1
2673ZZ
487.00
157.00
34.50
73.70
121.00
101.00
290.00
92.00
25.00
60.00
82.00
31.00
344.00
108.00
30.00
71.00
96.00
39.00
b72.00
212.00
59.00
138.00
187.00
76.00
746.00
237.00
66.00
157.00
211.00
75.00
423.00
136.00
38.00
92.00
126.00
31.00
284.00
93.00
26.00
64.00
86.00
13.00
260.00
81.00
23. UO
50.00
66.00
40.00
198.00
62.00
17.00
42.00
56.00
21.00
212.00
66.00
18.00
44.00
60.00
24.00
255.00
80.00
22.00
54.00
72.00
27.00
300.00
94.00
26.00
64.00
Mb. 00
30.00
316.00
99.00
28.00
66.00
89.00
34.00
358.15
113.28
31.48
75.12
101.52
36.75
TOTAL DRAINAGE AREA OF LAKt =
SUM OF SUB-DRAINAGE AREAS =
MEAN MONTHLY FLOWS AND DAILY FLOWS(CFS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLC
2673A1
487.00
487.20
2673C1
SUMMARY
TOTAL FLOW IN
TOTAL FLOW OUT
FLOW UAY
FLOW
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
72
72
72
73
73
73
73
73
73
73
73
73
72
72
72
73
73
73
73
73
73
73
73
73
365.00
393.00
301.00
819.00
412.00
1105.00
642.00
68<».00
469.00
265.00
2dl.OO
166.00
113.00
122.00
93.00
262.00
128.00
35<*.00
205.00
219.00
138.00
80.00
06.00
58.00
29
2
6
3
3
7
2
3
23
28
28
29
2
6
3
3
7
2
3
23
2«
2b
535.00
268.00
560.00
958.00
484.00
673.00
1090.00 10
580.00 4
206.00 28
195.00
20V. 00
166.00
83.00
17v. 00
297.00
155.00
215.00
349.00 10
221.00 <*
63.00 28
Db.OO
66.00
907.00
959.00
366.00
290.00
329.00
86.00
18
301.00
18
84.00
4300.00
4300.00
-------
FLOrf iNKOHMAf ION KUK
3/3/75
LAKE CODE 2673
ROSS LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY
267301
2673E1
2673F1
2673^2
FLOW DAY
FLOW
10
11
12
1
?
3
4
5
6
7
a
9
10
11
12
1
2
3
it
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
6
9
72
72
72
73
73
73
73
73
73
73
73
73
72
72
72
73
73
73
73
7J
73
73
73
73
72
72
72
73
73
73
73
73
73
73
73
73
/2
72
72
73
73
73
7J
73
73
73
73
73
31.1.0
34.00
27.00
70.00
3(S. GO
97.00
56.00
62.00
39.00
22.00
24. JO
16.00
77.00
63.00
63.00
172.00
87.00
232.00
135. 00
150.00
96.00
49.00
57.00
38.00
102.00
114.00
84.00
229.00
115.00
' 309.00
180.00
205.00
130.00
65.00
77.00
52.00
42.00
40.00
34.00
66.00
46. JO
113.oO
66.HO
4H.LO
66. 00
4V.i!U
3 7 . J o
25.00
29
2
6
3
3
7
2
3
23
28
28
29
2
6
3
3
7
2
3
23
2«
28
29
2
6
3
3
7
2
3
23
28
2h
4o.OO
24.00
48.00
83.00
43.00
59.00
96.00 10
62.00 4
It). 00 2«
16.00
18. uO
112.00
56.00
118.00
201.00
102.00
141.00
240.00 10
154.00 4
3V.OO 28
40.00
44.00
150.00
75. UO
157.00
26U.OO
136.00
188.00
327. uo lu
207.00 4
52.00 26
54.00
60.00
82.00
93.00
26.00
200.00
229.00
62.00
272.00
309.00
71.00
18
24.00
16
59.00
18
79.00
-------
APPENDIX C
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 75/02/04
43 4b 00.0 OB'* 3o 00.0
h'OSS KESErtVOI*
2b MICHIGAN
DATE TIME DEPTH
FROM OF
TO DAY FEET
13 35 0000
13 35 0010
72/09/20 09 50 0000
09 50 0004
09 50 0008
72/11/14 15 30 0000
15 30 0006
00010
WATER
TEMP
CENT
19. 4
16.8
16.9
18.8
4.2
11EPALES
00300
DO
MG/L
10.0
6.8
8.4
8.4
11.6
00077
THtANSH
SECCHI
INCHES
46
32
39
00094
GNDUCTVY
KIELO
MICKUMHO
490
450
59b
590
595
430
430
5
00400
PH
su
a. 27
b.oo
7.9'j
7.9u
7.9o
b.OO
8.10
00410
1 ALKv
CAC03
Md/L
193
195
197
196
200
199
199
2111202
0015
00b30(
NU2&NU3'
N- TOTAL
MO/L
0.020
0.07U
0.100
0.100
0.110
0.300
0.310
FELT DEPTH
00610
NH3-N
TOTAL
MG/L
0.010K
0.070
0.060
0.060
0.070
0.070
0.080
00665
PHOb-ror
Mli/L P
0.034
0.044
0.029
0.035
0.034
0.032
0.035
00066
PHOS-UIS
MG/L P
0.015
0.020
0.018
0.020
0.019
0.020
0.022
DATE TIME DEPTH
FROM OF
TO DAY FEET
72/06/14 13 35 0000
72/09/20 09 SO 0000
72/11/14 lb 30 0000
32217
A
UG/L
19. 7J
13. 3J
O.HJ
J VALUE KNO»:N TO 6£ IN ERROR
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/02/0*
267302
43 48 00.0 uB4 3U 00.0
riOSS rttSEKVOIK
26 MICHIGAN
00010
DATE TIME DEPTH WATER
FROM OF TEMP
TO DAY FEET CENT
003UU JGu77 0009*
DO T«AiMSP CiMDUCTVY
StCCHl FitLO
MG/L INCHES MICKOMHO
11EPALES
5
00*00
su
00*10
T ALK
CAC03
MG/L
2111202
0008 FEET
DEPTH
00630
N-TOTAL
MG/L
00610
NH3-N
TOTAL
MG/L
00665
PHOS-TOT
MG/L P
00666
PHOS-DIS
MG/L P
72/06/14
72/09/20
72/11/14
14
14
10
10
15
15
00
00
00
00
45
45
0000
0006
0000
0004
0000
0005
19.
16.
18.
3.
1
3
5
7
11.
7.
8.
10.
2
7
2
6
30
30
29
520
6*0
t>*0
500
*60
6.30
7.85
7.85
o.OO
a. lo
199
-203
203
226
226
0.040
0.200
U.200
0.450
0.450
0.010K
0.'060
0.060
0.090
0.090
0.04t>
0.046
0.049
0.034
0.035
0.020
0.031
0.034
0.022
0.022
32217
DATE TIME DEPTH CHLKPHYL
FROM OF A
TO DAY FEET UG/L
72/06/14 14 00 0000 16.2J
72/09/20 10 00 0000 11.3J
72/11/1* 15 45 0000 0.8J
VflLUE KNOWN TO BE LESS
THAN INDICATED
J VALUE KNOWN TO BE IN ERROR
-------
APPENDIX D
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STOKEI RETRIEVAL OAFE 75/02/04
2b73Al
43 S3 JO.u
TObALCO KiVr_W
26 'jl_/*uwliM
DATE
r r?OM
TO
72/10/2'*
7^/12/02
73/01/06
73/02/03
73/03/03
73/04/07
73/05/02
73/05/10
73/Ob/04
73/0 6/ Ir)
73/07/23
73/07/28
73/od/28
73/09/2H
Oo630 00625
TIME DEPTH M02%H03 TOT KJEL
OF N-TOTAt. N
OM FEET MI'J/L -1b/L
10
10
10
09
10
06
1 rl
13
09
12
10
10
10
40
00
00
00
10
36
00
00
50
10
00
00
30
ij
(.'
0
0
J
(j
j
j
0
o
o
0
0
0
.420
.196
.440
.320
.2r*G
.220
.3bO
.273
.440
.087
.011
.ObH
.138
.0^4
2.
0 .
0.
1.
o .
'J .
1.
0.
1 .
0.
0.
1 .
0.
0 .
9bO
630
610
o90
3oO
bSO
7hU
780
JOU
6?0
H80
200
b'7i»
2-^J
OL'610 Oub7l oGfabb
NH.3-N P-iOS-UIS PhO.-5-TUT
1 OT AL OK Fnu
rto/L Mb/L H MG/L r>
0.
0 .
0 .
0 .
0.
vJ .
0 .
u .
0 .
ij .
ll.
0.
u .
i^' .
294
022.
063
140
063
036
055
029
370
Ob4
034
ub6
lub
031
u .
0..
(1 .
0 .
w .
O .
0.
0.
0 .
0.
0 .
0.
0.
0 •
u21
017
0 1 -y
020
023
016
010
u!7
015
023
OOo
022
031
old
0 .'J46
0.036
O . 040
0 . 0 35
w . -J 4o
0.040
0 .060
o.Obn
o . 0 7^
u .055
0 . U45
0 . U 7 0
0.095
0 .045
LS2673A1
13 3U.O
CO
bKUb
0000 FEE1 DEPTH
-------
STOKtl rftlRIEVAL JAIE 7b/02/0<+
267331
.1 bl 3U.O
26
I/--!JlS PhUS-TOT
(UTAL U^THU
Mo/L Mb/
•J.240 0
. u 6 3 o
.OVO u
,0b6 J
.095 J
. O'+i/ J
J ,vd~f o
0.0 34 0
.j.235 0
j.O->"* 0
u . o2fc 0
U.17U 0
u . 0 1 ^ 0
j . 23U o
L
•
•
•
*
•
•
•
•
•
•
•
•
•
•
H
009
005K
009
00e>
009
005K
010
014
010
05H
OObK.
037
007
05ci
Mb/L P
0
U
U
0
0
0
0
0
0
0
0
0
u
.029
.oil
.021
.02u
. u20
.015
.Ob5
.050
. 042
.09-j
• 035
. lOu
• 045
LtSS
fO HE
-------
STOKET
L)A1E
Lb2bV3Cl
HJ 52 00.0 OM4 32 30.0
b -3K 10HACCO KlVLk
T / M! 0 b 3 LAKE
GriOUT HU XII
llLPALtS
2111204
0000 FEET
DEPTH
DATE
FROM
TO
72/10/29
72/12/02
73/01/0*)
73/02/03
73/03/03
73/04/07
73/03/02
73/05/10
73/Ob/0<*
73/Ob/lri
73/07/23
73/07/2«
73/OH/28
73/09/28
00630
.TIME utPM N02&N03 i
OK N-IOTAL
DAY FEET
09
09
09
09
09
08
11
18
15
08
14
08
09
13
55
05
<+5
25
<+0
40
10
40
10
10
00
50
40
30
MG/L
0
(j
0
o
0
0
j
0
o
w
u
(J
0
o
.410
.310
.430
.530
.399
.260
.340
. 7 1 u
.357
.378
.0 10*
.250
«2
-------
i)«Tt
43 b<+ 30.0 Ou4 31 30.0
HluULc. BK i OdACCO K]
£?6 tiLAO'Ji/lN CO
T/KOSb LAKE
«'L>
211120^
H 0000 FEET DEH>TH
FrtUM
TO
72/10/29
72/12/02
73/02/03
73/03/03
73/04/07
73/05/0?
7VOb/10
73/06/0"
73/06/ld
73/07/23
73/07/23
7J/08/28
73/C9/2H
Ou630 0 062S
TIMf-. DEPTH .\JO>\NOJ TOT KjtL
OF .g-TJTAL . N
OAY FEET M(i/L -HJ/L
10 15 C.HHO 2.8SO
u9
09
09
08
10
17
16
07
11
08
09
13
] b
30
"=.0
SO
00
50
00
50
10
bb
SO
00
K. VALUE Kujw
LESS
TH.
u\ IN
J
(i
k>
0
0
i
0
LI
0
c
u
0
N TO be.
DIC.-TEU
.4? J
.^•^J
.600
.300
. 350
.2^+0
.<*20
.24^
.0 10K
.260
.3ib
.300
0
1
0
0
1
1
0
0
0
0
u
. JHO
..?00
.790
. 740
.100
.1-30
. 9Hj
.360
. 7 i 0
.29u
. ?'JO
o'jolo 00671 Oo6h5
iMh j-\ Hi-lUS-OIS PnOS-Tot
T(JT*iL Ur'THU
MG/L I'iG/L H Mo/L H
J.ldO 0.009 0.0/i2
0.0^4
U . 160
u.092
0.026
•3.027
0.017
0 . 1 54
o .0 iO
J .0 16
0.012
o .0 13
'J .04-^
0
0
u
u
i)
u
li
0
0
u
0
''
• OObtN
.034
• Olb
.0 12
.01S
.013
.013
.006
.OObK
.007
.00br\
.010
0
0
0
0
0
o
0
0
u
(j
0
0
.OOv
.lib
.055
.035
.060
.y a5
.075
.020
.035
• 0 c ^
• U 3 o
.020
-------
STORET KETRIEVAL UATE 75/02/04
267JE1 L;>2b/3El
<+3 55 30.0 084 31 00.0
IN bR rUdACCu RIVER
db uLAOdlN CO
1/RObS LAKt (KESERVOiK)
CALHOUN RU A ING
11EPALES 21
t 0000 KEET
DATE
FROM
TO
72/12/02
73/01/06
73/02/03
73/03/03
73/04/07
73/05/02
73/05/10
73/Ob/03
73/Ob/18
73/07/23
73/07/28
73/08/28
73/09/28
00630 00625
TIME DEPTH N02MM03 TOT KJEL
OF' N-TOTAL IM
UAY FEET
09
10
09
10
09
09
19
14
07
15
08
10
12
20
03
40
00
10
10
08
20
40
20
55
00
30
MG/L
•J
(j
0
J
0
0
J
0
0
0
0
'j
u
.117
.200
.280
.280
.147
.350
.480
.360
.06b
.OlOK
.085
.019
.069
MG/L
0
0
1
0
0
u
0
1
0
0
1
0
0
.480
.465
.890
.5<»0
.560
,9dO
.670
.320
.360
.660
.380
.580
.120
00610 00671 00665
Nri.j-iM HHUS-D1S PhOS-TOr
TOTAL OniT^O
MG/L
0
0
o
0
u
•J
0
u
j
0
0
0
u
.033
.027
.078
.0«0
.019
.040
.012
.300
.025
.016
.052
.006
.00»
MG/L
0.
0.
0.
'J.
0.
0.
(J .
0 .
0.
G.
0.
0 .
r>
008
OU7
012
013
005K
006
013
005*
G05K
005K
006
008
MG/L P
0.013
0.012
0.050
0.0^5
0.020
0.068
O.Of J
O.U40
0.015
0.035
0.020
O.U la
0.015
DEPTH
K VALUE KNOr'N TO Bt
LESS THAN INDICATEU
-------
KETKIEVAL OATt 7b/0?/04
2o73Fl LS2673I- i
43 55 30.0 084 29 JO.O
CLUAH Kl\/Lr<
2b bLAUwIN CU
l/«!OSi> LAKt. (KtStKVUiK)
HOwArtU ^0 A ING
11EPALES 2111204
<+ 0000 FtET
DATt
FKOM
TO
72/10/29
72/12/02
73/01/06
73/0^/03
73/03/03
7 J/04/07
73/0^/02
73/05/10
73/06/04
73/06/18
73/07/23
73/07/28
73/08/28
73/09/28
00630 J0625
TlMt; DEPTH M02\N03 TO I KJhL
OF .M- TOTAL IM
DAY FtET
11
10
10
09
11
10
17
17
09
12
10
10
11
15
30
30
45
00
30
30
30
35
40
30
30
00
MG/L
0
0
(J
o
0
0
0
0
0
0
0
c
0
0
.163
.117
.330
.252
.2bU
. 19a
.3^0
.830
.520
.09?
.026
.088
.075
.04M
MG/L
i.
0.
i.
4 .
0.
0.
1.
0 .
i.
0.
0.
0.
0.
u.
800
420
030
60 'J
310
r>30
200
690
3*0
SOO
685
440
23u
190
G ii 6 1 0
iMHj-N f
TOTAL
Mlj/L
0 .
0.
(1 ,
0.
0 .
0 .
0.
0.
0 .
0 .
J.
:).
0.
w •
194
023
115
105
056
050
040
680
3t>0
037
Oil
o2o
023
044
00071
'MOS-OIS P
OPTHO
MG/L
0 .
0 •
0.
0 .
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
010
014
014
014
oil
009
009
015
017
005K
017
019
030
00t>t>5
HO^-TUI
Mb/L P
0.027
0.025
0.033
0.055
0.025
0.03J
0.078
0.035
0.100
0.035
0 .045
0.035
0.040
0.030
DEPTH
K VALUE KNOWN TU
LESS THAN i^jICA
-------
STOHEF RETRIEVAL U«TE 75/02/04
2b73F2 L:>2b73F2
43 59 jO.U 084 3U 30.U
CEOAK KIVEK
2b 6LAUWIN CO
•A'lLLFOKU KO XING
11EPALES 2111204
4 UOOO FEET OEPTM
DATE
r P.OM
TO
72/10/29
72/12/02
73/01/Ob
73/o2/03
73/03/03
73/04/07
7V05/02
73/05/10
73/06/03
73/06/lb
73/07/23
73/07/28
73/08/28
73/09/28
C'jfc3u 00625
TIMF_ DEPTH !\|02«.N03 TOT KJEL
OF N- TOTAL M
UAY FEET
11
10
10
09
10
09
11
18
.14
07
1C
09
10
12
SO
15
30
55
20
30
20
10
Ou
30
15
00
40
00
MG/L
u
•j
0
J
0
•J
0
0
u
U
0
0
0
u
.150
.084
.320
• i 7 4
.210
.160
.34U
.790
.330
.026
.010K
.029
.013
.014
MG
0
0
(I
0
J
1
1
0
0
(;
0
1
0
0
/L
.900
.860
.<+4b
. JHO
. ?4l'
.47U
. L f >J
. 45u
. oS'J
.<+4u
.ft60
.200
. i5u
. 100K
NH3-N ' f
TOTAL
M'i/L
0.075
t;.u6o
u.035
0.035
0.052
a. 0*2
J.u2u
^ . 0 1 1
J.U92
U . 0 3 U
j . 0 1 7
u.i/21
0.013
f . 0 1 0
00671 Oobbi
'riOS-JlS PhOS-fOI
OHTHO
0,
0.
0,
u <
d,
U i
0.
Li <
0 .
0,
J <
J .
U.
u <
. p
,005K
.005K
.006
.005*
. Ou7
.005K
.018
. 0 05K
. Gift
.007
. 0 0 5K
.005K
.OObK
. uOo
Mo/L P
u
0
u
0
0
0
0
0
u
0
0
0
0
0
.Ul3
.OOd
.020
.015
.015
.025
• J 3lD
.OlD
.U45
.015
.040
.u lu
.010
.Olj
K VALUE KNOWN FO BE
LESS THAN INDICATED
-------
HETKIEVAL DATE 75/02/04
DATt
FkOM
TO
72/10/29
72/12/02
73/01/06
73/0^/03
73/03/03
7 J/ 04/0 7
73/on/02
73/05/10
73/06/04
73/06/18
73/07/23
•73/07/28
73/0*i/2ti
73/09/28
00630 00625
TlMt. DEPTH N02-S.N03 TOT KJflL
OK N- TOTAL. N
DAY FtET
11
10
10
09
11
10
17
17
09
12
10
10
11
15
30
30
45
00
30
30
30
35
40
30
30
00
MG/L
0
0
u
0
0
0
0
0
0
0
0
0
I)
0
.163
.117
.330
.252
.250
.19o
.3^0
,H3o
.520
.09?
.026
.Od*
.075
.04H
MG/L
i
0
i
4
0
0
1
0
1
0
0
0
0
0
.800
.420
. 0 30
.600
.310
.o30
.200
.690
.3*0
.500
.6*5
.440
. 23u
. 190
0 1« b 1 0
NHj-N t
TOTAL
MG/L
0.
0.
0 .
0.
0 .
0 •
0.
0.
0 .
0 .
J.
;i .
•<}.
w •
194
023
115
105
056
050
040
6bO
3bO
037
Oil
u2o
023
044
00&71 O0bt>5
'HOS-OIb PHOi-TOl
MG/L
C.
0 .
0.
0.
0.
0.
0.
0.
0.
0.
0 .
0.
0.
p
010
014
014
014
oil
009
009
015
017
005K
017
u!9
03o
Mb/L P
0.027
0.025
0.033
O.U55
0.025
0.03J
0.0 78
0.035
o. 100
0.035
0.045
0.035
0 .040
0.030
2c>73Fl LS2b73l-~i
43 5b 30.0 OH4 29 jO.O
CLOAK K!(/LK
26 GLAUWIN CO
LAKt (KtStKVUlk)
kU AiNG
2H1204
UOOO FtET
DEPTH
K YALUE KNOWN Tu
LESS
-------
STOKET
L)«Tt 7b/02/04
2b73F2
43 b9 jO.O
CEUAK KIVEK
25 GLADWIN CO
T/KObii LAML
A'lLLFOKU KU XING
llEr-ALES
4
L;>2b73F2
3o 30.0
2111204
0000 FEET
DEPTH
DATE
FROM
TO
72/1U/24
72/12/02
73/01/06
73/u2/03
73/03/03
73/04/07
7j/0b/02
73/05/10
73/06/03
73/06/ltt
73/07/23
73/07/28
73/Oci/28
73/09/28
Cofc3o 006£b
TIME DEPTH N02«,N03 TOT KJEL
OF N- TOTAL M
DAY FEET
11
10
10
09
10
09
11
18
14
07
1C
09
10
12
SO
lb
30
SS
20
30
?.o
10
Oo
30
lb
00
40
00
MG/L
0
0
0
J
0
•J
0
0
u
0
0
c
0
u
.150
.084
.320
. 194
.210
.160
.340
.790
.330
«02fc
.010K
.029
.013
.014
0'/610 006/1 OU65D
NHj-N HMOS-OIS PhOb-TUl
TOTAL OKThO
MG/L rt'i/L -Ib/
0.
0.
I'.
0.
J.
1.
1.
0.
0.
0.
0.
1.
0.
0.
900
860
<*4b
JHO
2«+U
47vJ
170
4 by
cSo
*+4u
ft6o
200
Ibu
100K
0 .
t; .
U .
u' .
0 .
•J.
\J *
'j •
J.
v) .
j .
(j .
0.
U .
07b
o60
03S
03b
052
C"+2
0?o
on
u92
030
017
021
013
010
•J
0
0
u
0
u
0
Li
0
0
0
0
I!
0
L P
.OObK
.OObK
.006
• 00b*
.Oo7
.OObK
.Old
.OObK
. 0 1 ft
.007
.OObK
.OObK
.OObK
.OOo
Mo/L P
u.013
O.OOd
0.020
O.Olb
O.Olb
0.02b
0. J3D
0 . 0 1 o
0 . U4b
O.Olb
0.040
o.olo
0.010
0 .1; 1 J
K VALUE KNOWN FO B£
LESS THAN INDICATED
-------
STORE! HETRItVAL UATt 75/02/J4
267350 PR267350 P002071
<»3 13 30.0 084 29 00.0
GLA00/1N
26 1.250000 'MIDLAND
1/KObS LAKE
CEDAK HIVEK
lltPALES 2141204
4 0000 FEET DEPTH
DATE
FROM
TO
73/01/31
73/02/28
CPfT)-
73/02/28
73/04/02
CP«TJ-
73/04/02
73/04/30
CP(T>-
73/04/30
73/05/30
CP(T)-
73/05/30
73/07/05
CP(T)-
73/07/05
73/07/31
CP(T)-
73/07/31
73/08/31
CPU1-
73/08/31
73/09/30
CP(T)-
73/09/30
73/10/31
CP(T)-
73/10/31
73/11/29
CP(T>-
73/11/29
73/12/31
CP(T)-
73/12/31
74/01/31
CfMTl-
TIME DEPTH
OF
DAY FEET
08
Ib
08
16
08
16
08
16
08
16
07
16
08
16
08
Ib
Ob
16
08
16
08
16
08
00
00
00
00
00
oo"
00
00
00
00
CO
00
00
00
00
00
00
•oo
00
00
00
00
00
00630 00625
N02&M03 TOT KJEL
N-TOTAL N
MG/L MG/L
1.160 11.500
0.760 14.900
1.520 9.950
1.485 11.300
0.860 6.600
0.260 10.500
0.360 9.900
11.000
0.160 11.500
0.440 11.500
0.5bO 17.500
0.2du 12.3JO
o.briJ H.^OJ
00610 00671 00665
Nn3-N PHOS-DIS PHOS-TOT
TUTAL ORIHO
MG/L
0.160
1.370
0.180
0.052
0.294
U.780
0.040
0.3bO
0.063
0.072
1 .500
1 . v/50
j . 1 2 u
MG/L P
1
1
1
0
0
1
0
1
1
1
1
0
0
.260
.845
.005
.900
.880
.560
.940
.760
.000
.400
.500
.620
.67o
50051 50053
FLOW CONDUIT
KATE FLOH-MGD
MG/L P INST
2
4
3
3
3
3
2
3
2
3
t
J
4
.880
.500
.000
.000
.300
.900
.250
.900
.700
.500
.100
.000
.100
0
0
0
2
0
0
0
0
0
0
0
0
1
MGD MONTHLY
.600
.020
.600
.410
.820
.770
.580
.540
.420
. 740
.590
.710
.000
0-.680
0.650
0.770
0.840
0.820
0.690
0.660
0.570
0.560
0.530
0.440
0.560
0.900
ib 00
------- |