U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
PORTAGE U\KE
HOUGHTON COUNTY
MICHIGAN
EPA REGION V
WORKING PAPER No, 206
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
if GPO 697-032
-------
REPORT
ON
PORTAGE LAKE
HOUGKTON COUNTY
MICHIGAN
EPA REGION V
WORKING PAPER No, 205
WITH THE COOPERATION OF THE
MICHIGAN DEPARTMENT OF NATURAL RESOURCES
AND THE
MICHIGAN NATIONAL GUARD
FEBRUARY, 1975
-------
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)]5 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.
-------
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
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MICHIGAN
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
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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W KEWEENAW CO.
PORT A
LAKE :
PORTAGE LAKE
Tributary Sampling Site
x Lake Sampling Site
• Sewage Treatment Facility
MICH.
Map Location
-------
PORTAGE LAKE
STORE! NO. 2669
I. CONCLUSIONS
A. Trophic Condition:
Portage Lake was sampled only two times. On the basis of
these somewhat limited data, it appears that the lake is meso-
trophic. Using comparable sampling times, of the 35 Michigan
lakes on which sampling was completed, only four had less mean
total and dissolved phosphorus, only two had less mean inorganic
nitrogen, five had less mean chlorophyll a_, and six had greater
Secchi disc transparency*.
Survey limnologists described the overall appearance of the
lake as "good".
B. Rate-Limiting Nutrient:
The algal assay sample was lost in shipment; however, the
lake date indicate phosphorus limitation in June and September.
C. Nutrient Controllability:
1. Point sources—During the sampling year, Portage Lake
received a total phosphorus load at a rate just in excess of
the rate proposed by Vollenweider (in press) as "dangerous";
i.e., a eutrophic rate (see page 12). Now, Vollenweider's
model may not apply to water bodies with short hydraulic re-
tention times, and the hydraulic retention time of Portage Lake
* See Appendix A.
-------
is not known. However, the maximum depth of the lake is 59
feet; and, if it is assumed that the mean depth is about one-
third of the maximum depth (20 feet), the mean hydraulic re-
tention time would be 93 days. If the assumed mean depth is
reasonable, it is likely that Vollenweider's model is applicable.
It is calculated that the communities of Houghton-Hancock and
Lake Linden contributed 27% of the total phosphorus load to
Portage Lake during the sampling year. Removal of 80% of the
phosphorus at these two point sources would reduce the loading
2
rate to 0.75 g/m /yr, a mesotrophic loading rate, and would
protect the existing good water quality of Portage Lake as well
as provide additional protection for downstream Lake Superior.
Reportedly (Courchaine, 1972), Lake Linden wastewater treat-
ment facilities were scheduled for construction.
2. Non-point sources (see page 12)--The phosphorus exports
of the sampled tributaries to Portage Lake were somewhat high
as compared to the export of unimpacted Gold Mine Creek tribu-
2
tary to nearby Deer Lake* (33 Ibs/mi /yr).
There are no known point sources impacting these streams,
and it appears that either the geological characteristics of
the drainage, agricultural practices, or both are the cause of
the relatively high export rates.
* Working Paper No. 192.
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In all, it is estimated that non-point sources, including
precipitation, contributed nearly 73% of the total phosphorus
load to Portage Lake during the sampling year.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry :
1. Surface area: 10,970 acres.
2. Mean depth: unknown.
3. Maximum depth: 59 feet.
4. Volume: unknown.
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Name Drainage area* Mean flow*
Sturgeon River 728.0 mi? 825.1 cfs
Pike River 17.4 mi^ 20.7 cfs
Pilgrim River 22.8 mi 27.1 cfs
Minor tributaries & 2
immediate drainage - 205.7 mi 253.1 cfs
Totals 973.9 mi2 1,126.0 cfs
2. Outlet -
Portage River - Portage Lake ?
ship canal 991.Omi^** 1,126.0 cfs
C. Precipitation***:
1. Year of sampling: 31.9 inches.
2. Mean annual: 28.7 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
Portage Lake was sampled two 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 two or more depths at each station (see map, page v).
During each visit, a single depth-integrated (15 feet or near bottom to
surface) sample was composited from the stations for phytoplankton identi-
fication and enumeration; and during the second visit, a single five-gallon
depth-integrated sample was composited for algal assays (this sample was
lost in shipment). Also each time, depth-integrated samples were collected
from each of the stations for chlorophyll a_ analysis. The maximum depths
sampled were 43 feet at station 1, 20 feet at station 2, and 20 feet at
station 3.
The results obtained are presented in full in Appendix C, and the
data for the September sampling period, when the lake essentially was
well-mixed, are summarized below. Note, however, the Secchi disc sum-
mary is based on all values.
For differences in the various parameters in June, refer to Appendix
C.
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A. Physical and chemical characteristics:
FALL VALUES
Parameter Minimum
Temperature (Cent.) 15.6
Dissolved oxygen (mg/1) 6.8
Conductivity (ymhos) 120
pH (units) 6.4
Alkalinity (mg/1) 40
Total P (mg/1) 0.009
Dissolved P (mg/) 0.006
N0? + NO, (mg/1) 0.030
Ammonia Tmg/1) 0.050
Secchi disc (inches) 68
(09/10/72)
Mean Median
17.2
8.8
149
6.8
45
0.012
0.007
0.085
0.063
ALL VALUES
91
17.4
9.0
149
6.8
44
0.012
0.007
0.090
0.060
92
Maximum
17,
9
167
7,
53
0,
0,
0,
6
4
0
018
Oil
160
0.080
108
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
06/25/72
Dominant
Genera
1.
2.
3.
4.
5.
Cryptomonas
Asterionella
Scenedesmus
Fragilaria
Dinobryon
Other genera
Number
per ml
535
499
383
369
333
123
Total 2,242
09/10/72 1. Dinobryon 752
2. Microcystis 644
3. Attheya 484
4. Cryptomonas 80
5. Anabaena 72
Other genera 463
Total 2,495
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)
06/25/72 01 10.8
02 5.1
03 3.6
09/10/72 01 6.3
02 1.9
03 0.3
Limiting Nutrient Study:
As noted before, the algal assay sample was lost in shipment.
However, the lake data indicate phosphorus limitation in June
and September (N/P ratios were 15/1 and 21/1, respectively).
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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
tributary sites indicated on the map (page v), except for the high
runoff months of April and May when two samples were collected. Samp-
ling was begun in October, 1972, and was completed in October, 1973.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Michigan District Office of the U.S. Geological Survey for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were calcu-
lated using mean concentrations and mean flows. The nutrient loads for
the two outlets (A-l and D-l) were calculated using the mean of the
nutrient concentrations in both and the combined mean flow ("D-l", Ap-
pendix B).
Nutrient loadings for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated by using the mean concen-
trations in Boston Creek at station B-l and the mean ZZ flow.
The operator of the Houghton-Hancock wastewater treatment plant
provided monthly effluent samples and corresponding flow data. However,
during the sampling year, Lake Linden had no waste treatment plant, and
nutrient loads for that source were estimated at 3.5 Ibs P and 9.4 Ibs
N/capita/year.
-------
In this report, it is assumed that all of the nutrients from both
sources reached Portage Lake during the sampling year.
A. Waste Sources:
1. Known municipal
t
Name
Houghton-
Hancock
Lake Linden
Pop.
Served*
10,887
1,214
Treatment
act. sludge
untreated
Mean
Flow (mgd)
1.795
0.121*
Receiving
Water
Portage Lake
Torch Lake
2. Known industrial - None
t Courchaine, 1972; Rydquist, 1973.
* 1970 Census.
** Estimated at 100 gal/capita/day.
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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) -
Sturgeon River 55,230 59.1
Pike River 2,280 2.4
Pilgrim River 2,190 2.3
b. Minor tributaries & immediate
drainage (non-point load) - 6,480 7.0
c. Known municipal STP's -
Houghton-Hancock 21,020 22.5
Lake Linden 4,250 4.6
d. Septic tanks* - 310 0.3
e. Known industrial - None
f. Direct precipitation** - 1,710 1.8
Total 93,470 100.0
2. Outputs -
Lake outlet: Portage River -
Portage Lake ship canal 35,470^
3. Net annual P accumulation - 58,000 pounds
* Estimate based on 495 lakeshore dwellings; see Working Paper No. 1
** See Working Paper No. 1.
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11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
Ibs N/ % of
Source yr total
a. Tributaries (non-point load) -
Sturgeon River 1,450,510 63.5
Pike River 58,560 2.6
Pilgrim River 56,340 2.5
b. Minor tributaries & immediate
drainage (non-point load) - 537,120 23.5
c. Known municipal -
Houghton-Hancock 52,170 2.3
Lake Linden 11,410 0.5
d. Septic tanks* - 11,630 0.5
e. Known industrial - None
f. Direct precipitation** - 105.680 4.6
Total 2,283,420 100.0
2. Outputs -
Lake outlet: Portage River -
Portage ship canal 1,791,070
3. Net annual N accumulation - 492,350 pounds
* Estimate based on 495 lakeshore dwellings; see Working Paper No. 1
** See Working Paper No. 1.
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12
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
2 ?
Tributary Ibs P/mi /yr Ibs N/mi /yr
Sturgeon River 76 1,992
Pike River 131 3,366
Pilgrim River 96 2,471
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 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 consid-
ered 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/m2/yr
Total
8.5
0.96
Accumulated
5.3
0.59
Total
208.2
23.3
Accumulated
44.9
5.0
Vollenweider loading rates for phosphorus
(g/m^/yr) based on surface area and mean
outflow of Portage Lake:
"Dangerous" (eutrophic rate) 0.92
"Permissible" (oligotrophic rate) 0.46
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13
V. LITERATURE REVIEWED
Courchaine, Cletus, 1972. Treatment plant questionnaire (Lake Linden
sewage facilities). MI Dept. Publ. Health, Escanaba.
Fetterolf, Carlos, 1972. Personal communication (lake morphometry).
MI Dept. of Nat. Resources, Lansing.
Rydquist, Jack W., 1973. Treatment plant questionnaire (Houghton-
Hancock STP). MI Dept. Nat. Resources, Escanaba.
Vollenweider, Richard A. (in press). Input-output models. Schweiz.
Z. Hydro!.
-------
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
2b«0 HOLLOWAY RESERVOIR
26Ai CARD RESERVOIR
26A2 BOAWDMAN HrDRO 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
26<>0 JORDAN LAKE
2643 KENT LAKE
2648 LAKE MACATAWA
26*9 MANISTEE LAKE
2659 MUSKEGON LAKE
2665 PENTKATER LAKE
2671 RANDALL LAKE
2672 ROGERS POND
2673 ROSS RESEKVOIK
2674 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
0.044 '
0.027
0.105
0.372
0.180
0.040
0.197
0.018
0.087
0.027
0.246
0.026
0.034
0.016
0.042
0.083
0.027
0.307
0.163
-r«LL V«LUtS'
MEAN
DISS P
0.043
0.022
0.005
0.057
0.086
0.048
0.008
0.073
0.006
0.014
0.008
0.058 •
0.342 '
0.144
0.015
0.120
0.010
0:043
0.017
0.183
0.015
0.021
o.ooa
0.032
0.064
0.019
U.241
0.148
MEAN
INORG N
1.461
3.835
0.358
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
0.304
0.469
0.496
0.818
0.183
0.460
0.307
1.737
1.252
0.367
0.963
0.749
500-
MEAN SEC
439.375
473.000
363.500
470.222
456.167
465.250
461.667
456.000
351.250
404.333
456.167
456.167
441.667
427.667
455.000
477.600
451.333
436.444
430.667
457.333
435.500
465.333
458.750
442.833
455.500
417.778
451.667
418.400
— ALL VALUtS"
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
33.944
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 1)0
9.200
9.500
6.600
12.600
14.850
8.200'
7.400
7.500
9.240
14.800
7.500
14.000
14.800
14.900
13.000
12.200
11.380
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
-FALL VALUtS-
MEAN
DISS P
0.093
0.006
0.005
0.008
0.029
0.024
O.OSO
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 KITH HIGHER VALUES)
LAKE
CODE LAKE NAME
26AO HOLLOWAY RESERVOIR
26Ai CARO RESERVOIR
26A2 BOAKDMAN HYDRO POND
2603 ALLE6AN LAKE
2606 BARTON LAKE
2609 BtLLEVILLE 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
2648 LAKE HACATAWA
26*9 MANISTEE LAKE
2659 MUSKEGON LAKE
2665 PENTWATER LAKE
2671 RANDALL LAKE
2672 ROGERS POND
2673 ROSS RESERVOIR
267* SANFORO LAKE
2683 THORNAPPLE LAKE
2685 UNION LAKE
26B8 WHITE LAKE
2691 HONA LAKE
2692 LONG LAKE
— ---—-rALL VALUES-
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)
( 13)
( 34)
( 7)
( 8)
( 9)
( 27)
( 11)
< 3?)
( 17)
( 25)
( 12)
( 0)
( 4)
I 20)
( 3)
( 28)
( 13)
( 24)
( 2>
( 26)
( 21)
( 301
( 19)
< 14)
( 23)
( 1)
( 5)
43
S4
97
31
20
37
77
23
91
71
83
29
0
11
69
14
74
40
63
6
66
57
80
46
26
61)
3
9
( 15)
( 19)
( 34)
I 11)
< 7)
( 13)
( 27)
( 8)
( 32)
( 251
( 29)
( 10)
( 0)
( 4)
( 24)
( 5)
( 26)
( 14)
( 22)
( 2)
( 23)
( 20)
( 28)
( 16)
( 9)
( 21)
( 1)
( 3)
MEAN
INORG N
17
0
69
31
14
20
BO
34
83
94
40
11
23
6
63
3
77
54
51
43
86
57
74
9
26
66
37
46
( 61
( 0)
( 24)
( 11)
( 5)
( 7)
< 28)
( 12)
( 29)
( 33)
( 14)
( 4)
( 8)
( 2)
( 22)
( 1)
( 27)
( 19)
I 18)
( 15)
( 30)
( 20)
( 26).
( 3)
I 9)
( 23)
( 13)
( 16)
500-
MEAN SEC
57 (
3 (
91 I
6 I
29 (
11 (
17 1
34 (
94 I
86 <
29 (
29 I
54 1
69 1
40 1
0 1
46 1
60 1
66 1
23 i
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)
1 21)
1 23)
1 8)
I 22)
I 3)
( 7)
( 18)
1 13)
( 28)
( IS)
1 27)
— ALL VALUES
MEAN
CHLOHA
60 (
49 (
94 I
29 (
14 (
11 I
86 I
0 (
89 (
46 (
3 <
37 1
9 1
26 1
6 1
23 1
80 1
69 1
31 l
20 i
77 I
63
43
40
34
74
17
66
21)
17)
33)
10)
5)
4)
30)
0)
31)
16)
1)
: 13)
: 3)
: 9i
! 2)
! 8)
I 28)
I 24)
[• 11)
1 7)
1 27)
I 22)
( 15)
( 14)
( 12)
( 26)
( 0}
( 23)
15-
MIN
63 (
54 (
97 (
40 (
3 (
79 ("
94 <
90 (
60 (
11 (
90 <
23 (
11 (
0 (
36 (
43 (
46 (
11 (
11 <
86 (
51 (
79 1
71 (
49 (
79 (
31 (
20 (
21 (
00
22)
19)
34)
14)
11
26)
33)
31)
21)
2)
311
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
325
374
249
242
377
12J
239
-------
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 MAROUETTE LAKE
2699 STRAWBERRY LAKE
— — — rALL VALUta— •
MEAN MEAN
TOTAL P DISS P
17
89
94
83
51
63
43
( 6)
( 31)
( 33)
( 29)
( 18)
( 22)
( 15)
17
89
94
B6
49
51
34
( 6)
( 31)
( 33)
( 30)
( 17)
( 18)
( 12)
MEAN
INORG N
29 <
89 1
97 1
91 1
60 1
71 1
49 1
: 10)
; 31)
: 34)
I 32)
1 21)
1 25)
1 17)
bOO-
MEAN SEC
14
89
97
71
83
49
74
( 5)
( 3D
( 34)
( 25)
( 29)
( 17)
( 26)
MEAN 15-
CHLORA MIN
83
91
97
71
51
54
57
( 29)
( 32)
( 34)
( 25)
( 18)
( 19)
( 20)
69 (
36 (
57 (
79 (
11 (
66 (
27 (
00
24)
12)
20)
26)
2)
23)
9)
INDEX
NO
229
483
536
481
305
354
2
-------
APPENDIX B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR MICHIGAN
3/3/75
LAKE CODE 2669
PORTAGE LAKE
TOTAL DRAINAGE AREA OK LAKEtSQ MI) 991.00
SUB-DRAINAGE
TRIBUTARY AREA(5Q MI)
JAN
FEH
MAR
APR
NORMALIZED FLOWS(CFS)
MAY JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS
MEAN MONTHLY FLOWS AND DAILY FLOWS(CFS)
TRIbUTARY MONTH YEAR
MEAN FLOW DAY
266901
2669F1
10
11
12
1
?.
3
4
5
6
7
8
9
10
10
11
12
1
2
3
4
5
6
7
8
9
10
72
72
72
73
73
73
73
73
73
73
73
73
73
72
72
72
73
73
73
73
73
73
73
73
7J
73
1210.00
1590.00
687.00
753.00
636.00
3570.00
2630.00
3440.00
821.00
761.00
757.00
639.00
523.JO
8H7.00
1170.00
504.00
b'53.00
4o7.00
2620.00
1930.00
2520.CO
602.00
559.UO
556.00
469.JO
384.uO
29
3
4
7
6
2
15
23
10
7
29
3
4
28
6
2
15
23
10
I
1634. BO 2313.60 1211.60 822.09 591.78 602.80
670.00 1690.00 868.00 602.00 434.00 442.00
77.00 49.90 23.60 13.20 7.80 11.20
101.00 65.30 30.90 17.30 10.20 14.70
817.00 520.00 272.00 185.00 133.00 135.00
SUMMARY
LAKE = 991.00 TOTAL FLOW IN =
AS = 991.20 TOTAL FLOW OUT =
FLOW DAY FLOW DAY FLOW
637.00
750.00
694.00
980.00
2650.00 2B 1580.00
4770.00 19 2240.00
1070.00
677.00
744.00
646.00
509.00
46B.OO
551.00
50*. OU
71*. 00
1160.00
3500.00 19 1650.00
7B&.00
497.00
546.00
47<+.00
3/4.00
754.00 888.18
553.00 652.00
13.10 16.10
17.20 21.10
169.00 200.00
13511.99
13512.40
702.93 1126.02
512.00 825.13
10.60 20.67
13.90 27.09
158.00 253.08
-------
TRIBUTARY FLOW INFORMATION FOR MICHIGAN
2/3/75
LAKE CODE 2669
PORTAGE LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS(CFS)
TRIBUTARY MONTH YEAR
2669G1
2669H1
10
11
12
1
?
3
4
5
6
7
8
9
10
10
11
12
1
2
3
4
5
6
7
8
9
10
10
11
12
1
2
3
4
5
6
7
8
9
10
72
72
72
73
73
73
73
73
73
73
73
73
73
72
72
72
73
73
73
73
73
73
73
73
73
73
72
72
72
73
73
73
73
73
73
73
73
73
73
N FLOW
28.00
32.00
10.00
12. CO
9.00
74.00
66.00
81.00
12.00
8.00
11.00
9.00
6.00
36.00
42.00
13.00
16.00
11.00
98.00
86.00
106.00
17.00
11.00
14.00
12.00
8.00
272.00
358.00
155.00
169. 00
143.00
d03.00
592.00
774. 00
IBS. 00
171.00
170.00
144.00
118.00
DAY
29
3
3
4
7
6
2
15
23
10
7
29
3
3
4
7
19
2
15
23
10
7
FLOW
17.00
13.00
12.00
7.00
57.00
140.00
14.00
5.00
13.00
6.00
7.00
22.00
17.00
16.00
y.OO
7b.OO
55.00
19.00
7.00
17.00
e.OO
9.00
DAY
28
19
28
FLOW DAY
FLOW
32.00
42.00
42.00
-------
APPENDIX C
PHYSICAL and CHEMICAL DATA
-------
STOrtET RETRIEVAL DATE 75/02/U4
266901
47 03 00.0 088 29 30.0
PORTAGE LAKE
26 MICHIGAN
oOOlo
DATE
FkOM
TO
72/06/25
72/09/10
TIME
OF
DAY
14 05
I't 05
14 OS
13 50
13 50
13 50
13 50
13 50
13 50
13 50
DEPTH
FEET
0000
0015
0025
0000
0004
0015
0022
0029
0036
0043
*ATEH
TEMP
CENT
16.6
16.0
15.0
17.4
17. <*
17.3
17.3
17.3
15.6
11EPALES
00300
00
M&/L
9. a
9.7
9.3
8,tf
B.7
H.7
8.9
v.'£
6.6
00077 00094
TKANSP CiMOUCTVY
SECCHI FIELD
INCHES MiCKOMHO
b6 95
90
9o
108
125
155
165
167
167
16<*
*
00400
KH
SU
7.60
7.60
7.50
6.60
6.60
6. 70
0.40
6. 70
6. 70
6.50
00410
T ALK
CACU3
MG/L
34
32
32
40
44
44
44
44
t7
50
2111202
0047
00630
N02&N03
N-TuTAL
MG/L
0.140
0.150
0.150
0.100
0.090
0.090
0.100
0.090
0.160
0.160
FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.010K
0.020
0.030
0.060
0.060
0.060
0.080
0.050
0.060
0.060
00665
PHOS-TOT
MG/L P
0.015
0.017
0.015
0.012
0.010
0.010
0.009
0.010
0.011
0.013
00666
PHOS-DIS
MG/L P
0.010
0.010
0.012
0.007
0.006
0.006
0.006
0.006
0.008
0.006
32217
DATE TIME DEPTH CHLwPnYL
FKOM OF J
TO oAY FEET OG/L
72/06/25 1<+ OS 0000
72/U9/1U 13 50 0000
10 .yj
6.3J
K V4LII? KNOWN TO 8E L^SS
THAN IMDICATFD
KNOWM TO BE IN
-------
STORET RETRIEVAL DATE! 75/02/U4
26fc>9o2
47 Ub 00.U 088 25 00.0
PORTAGE LAKE
26 MICHIGAN
DATE TIME DEPTH
FROM OF
TO DAY FEET
73/06/25 14 45 0000
14 45 0020
72/09/10 13 05 0000
13 05 0004
13 05 0015
13 05 0019
00010
WATER
TEMP
CENT
17. u
14.0
17.6
17.5
17.5
00300
DO
MG/L
9.6
8.4
9.2
9.0
9.1
HEPALES
00077
TrtANSP
SECCH1
INCHES
08
9b
00094
CNDUCTVY
I-1ELO
M1CROMHO
100
100
148
149
149
4
00400
HH
SU
7.70
7.40
6.80
7.00
6.90
7.00
00410
T ALK,
CAC03
MG/L
35
35
44
43
43
45
2111202
0020
00630
N02&N03
N-TOTAL
MG/L
0.150
0.160
0.040
0.030
0.030
0.030
FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.020
0.020
0.080
0.060
0.050
0.060
00665
HHOS-TOT
MG/L P
0.030
0.017
0.016
0.013
0.012
0.013
00666
PHOS-DIS
MG/L P
0.016
0.010
0.011
0.007
0.006
0.007
DATE TIME DEPTH
FROM OF
TO DAY FEET
72/06/25 14 45 0000
72/09/10 13 05 0000
J2217
A
UG/L
b.U
1.9J
J VflUJF: KNOWM TO BE IN ERROR
-------
STOhiET RETRIEVAL DATE 75/02/04
266903
47 05 00.0 08b 30 00.0
rOKTAoE LAKE
26061 MICHIGAN
00010
DATE TIME DEPTH WATEK
FKOM OF TEMP
TO DAY FEET CENT
72/06/25 15 20 0000 16.5
15 20 0020 14.5
72/09/10 13 30 0000
13 30 0004 17.<*
13 30 0011 17.<«
00300 0,'i07Y
DO TKANSP
SECCHl
MG/L INCHES
10.3
8.8
9.3
9.4
75
10M
CNuucivr
KitLD
MlCkOMHO
95
95
120
130
11EPALES
6
00400
Hn
SU
7.60
7.50
b.9u
7.00
7.00
00410
T ALK
CAC03
MG/L
37
37
53
45
44
2111202
0000
00630
N02S.N03
N-TOTAL
MG/L
0.160
0.180
0.090
0.090
0.090
FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.030
0.070
0.080
0.060
0.060
00665
PHOS-TOT
MG/L P
0.028
0.017
0.015
0.014
0.011
00666
PHOS-DIS
Mii/L P
0.018
0.011
0.009
0.008
0.008
32217
DATE TIMt DEPTH CHLKPHiCL
FKOM OF A
TO DAY FEET UG/L
72/J6/25 15 20 0000 3.6J
72/09/10 13 30 0000 0.3J
J VflLUT KNOWN TO BE IM
-------
APPENDIX D
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STOKET RETRIEVAL DATE 75/02/04
2669A1 Lb2669Al
47 13 30.0 086 37 30.0
HOwTAG LAKE SHIP CANAL
26 15 HOJGHTOiM
0/POKTAGE LAKE
BANK E SUE OF CANAL 6.5 MI N HANCOCK
llEPALtS 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/10/29
72/12/03
73/01/07
73/02/03
73/03/04
73/0^/07
73/04/28
73/05/06
73/05/19
73/06/02
73/07/15
73/08/23
73/09/10
73/10/07
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
09
09
09
09
10
09
09
15
09
08
15
14
08
30
15
15
00
45
00
30
35
15
05
32
45
30
10
MG/L
0
0
0
0
0
0
0
j
0
0
0
0
0
0
.2SO
.280
.310
.290
.280
.240
.270
.290
.260
.086
.250
.260
.072
.230
MG/L
0.
0.
?.
0.
0.
2.
0.
0.
0.
0.
0.
0.
0.
0.
200
250
300
180
115
100
270
380
360
520
180
230
160
250
00610 00671 00665
NH3-N PHOS-OIS PHOS-TOT
TOTAL - OUTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
056
038
065
056
012
068
015
040
020
054
030
013
066
060
MG/L
0.
0.
0.
(j.
0.
0.
0.
0.
c.
a.
0.
0.
0.
p
008
006
005K
020
005K
006
005K
010
005K
008
005K
009
005K
MG/L P
0.010
0.012
0.007
0.020
O.OObK
0.020
0.005K
0.025
0.010
0.015
0.005K
0.010
0.005
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/02/04
2669ril LS266961
47 12 00.U 088 3/ 00.0
BOSTON CREEK
26 lb HOUGHTOiM
T/PORTAGE LAKE
ST HWY 203 BRDG
11EPALES 2111204
t 0000 FEET
DEPTH
DATE
FROM
TO
72/10/29
72/12/03
73/02/03
73/03/04
73/04/07
73/04/28
73/05/06
73/05/19
73/06/02
73/07/15
73/08/23
73/09/10
73/10/07
00630 00625
TIME DEPTH N02^N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
09
09
10
10
09
10
14
09
08
15
14
09
45
25
?0
10
20
30
15
?8
15
37
50
45
15
MG/L
0
0
0
0
0
0
0
0
0
U
0
1
0
.550
.260
.29^
.320
.170
.168
.6bO
.132
.270
.650
.200
.500
.190
MG/L
0.
2.
0.
0.
0.
1.
0.
1.
1.
0.
c.
0.
1.
150
200
540
560
480
260
•+60
050
890
520
340
780
too
00610 00671 00665
Nrl3-N PHOS-UIS PHOS-TOT
TOTAL JRTHO
MG/L
0.
0.
0.
C.
0.
0.
0.
0.
0.
0.
0.
0.
0.
031
054
075
091
028
066
022
061
066
04d
032
077
080
MG/L
0.
C.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
005K
005K
008
005K
005K
005K
005K
005K
005K
OOSK
006
005K
014
MG/L P
0.005K
0.008
0.010
0.010
0.010
0.010
0.030
0.020
0.010
0.010
0.015
0.010
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOREf RETRIEVAL OATE 75/02/04
<+7 12 00.0 088
TP-AP KOCK KIVEK
26 7.5 LOUR1UM
T/PORTAljE LAKE
riUOUACK KU BKOG
HEPALtS
4
LS2669C1
00.0
0000 FEET DEPTH
DATE
FROM
TO
72/10/29
72/12/03
73/01/07
73/02/03
73/03/04
73/04/07
73/0^/28
73/05/06
73/J5/19
73/Ob/02
73/07/15
73/u8/23
73/09/10
73/10/07
TIME DEPTH
OF
DAY FEET
12 45
12 15
11 15
10 00
09 00
10 50
10 15
11 15
13 30
08 30
09 05
18 <*5
17 45
11 30
0630
AN03
OTAL
iG/L
0.230
0.340
0.399
J.350
0.^30
0.180
O.bbO
0.139
0.300
0.320
0.29H
0.13rf
0.300
0 .250
00625
TOT KJEL
N
MG/L
0.200
0.<+00
0.930
0.34o
0.42C
0.460
0.780
1.470
1.100
0.460
0.340
1.540
0 . 290
0.420
OublO
NH3-N
TOTAL
MG/L
0.074
0.021
0.105
0.04
-------
STORE! RETRIEVAL DATE 75/02/04
2669D1 LS2669D1
47 00 00.0 088 26 30.0
PORTAGE RIVtR
26 7.5 POPE MILLS
O/POKTAbt LAKE
FROM MESSNER OOCK NW OF PORTAGE EUTRY
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/10/29
72/12/03
73/01/07
73/02/03
73/03/04
73/04/07
73/04/28
73/05/06
73/05/19
73/06/02
73/07/15
73/08/23
73/09/10
73/10/07
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF IM-TOTAL . N
DAY FEET
11
10
10
09
09
10
10
10
15
10
11
16
16
10
10
50
01
35
07
22
20
20
36
23
15
20
15
00
MG/L
u
0
0
0
0
0
0
0
0
c
0
0
0
0
.220
.189
.260
.280
.231
.200
.Ib4
.500
.091
.198
.069
.470
.350
.399
MG/L
0.
0,
1.
1.
0.
0.
1.
0.
G.
0.
0.
i).
0.
0.
bOO
6?0
100
300
270
270
050
500
440
350
580
540
250
380
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MtVL
0.
0.
0.
0.
0.
0.
0.
0.
0.
u.
0.
0.
0.
0.
088
042
160
075
024
016
048
014
025
050
040
031
070
075
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
005K
008
017
007
008
005K
005K
006
005K
005K
005K
029
012
042
MG/L P
0.014
0.014
0.018
0.010
0.015
o.olo
0.015
0.030
0.030
0.005K
0.015
0.040
0.020
0.050
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/02/0<+
LS2b69El
47 00 00.0 088 29 00.0
SNAKE RIVER
26 15 KEWEENAw BAY
T/PORTAGE LAKE
US 41 AlixlG
HEPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/10/29
72/12/03
73/02/03
73/03/04
73/04/07
73/04/28
73/05/Ob
73/05/19
73/06/02
73/07/15
73/08/23
73/09/10
73/10/07
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
11
09
09
10
10
09
15
10
11
16
15
iO
48
00
48
19
09
?8
35
46
43
00
35
50
15
Mti/L
0
0
0
0
0
0
0
0
0
0
0
u
u
.2*7
.198
.198
.250
.056
.060
.280
.044
.034
.154
.052
.0*6
.021
MG/L
1.
1.
0.
2.
0.
1.
0.
0.
0.
1.
0.
1.
u.
750
470
660
200
830
100
780
960
5?0
260
420
>?00
550
00610 00671 00665
NH3-N PHOS-OIS PHOS-TOT
TOTAL ORTHO
HG/L
0
0
0
0
0
0
0
0
0
0
(j
0
0
.360
.231
.250
.33b
.037
.040
.022
.092
• C50
.092
.045
.060
.078
MG/L P
0
0
0
0
0
0
0
J
0
0
0
u
0
.026
.075
.072
.u84
.016
.026
.015
.018
.005K
.142
.017
.016
.011
MG/L P
0.189
0.132
0.110
0. 150
0.035
0.060
0.035
0.040
0.020
0.220
0.035
0.040
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
KETRIEVAL OATE 75/02/04
2669K1 LS2669F1
47 01 00.u 088 30 30.0
26 15 HOUGHTON
T/HOKTAbE LAKE
US 41 SrtOG
HEPALES 2111204
4 0000 FEET DEPTH
DATE
F«OM
TO
72/10/29
72/12/03
73/01/07
73/02/03
73/03/04
73/04/07
73/04/28
73/05/06
73/05/19
73/06/02
73/07/lb
73/08/23
73/09/10
73/10/07
00630 0062S
TIME DEPTH N026.N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
11
10
10
09
10
10
10
15
10
10
16
IS
10
40
12
35
02
27
03
35
30
50
38
50
40
40
22
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
i)
.094
.084
.126
.147
.154
.096
.069
.300
.052
.050
.026
.028
.180
.010K
MG/L
2.
1.
0.
1.
0.
0.
0.
0.
1.
1.
1.
0.
0.
0.
200
100
990
400
390
440
400
580
540
98d
260
340
320
440
Ou610 00671 0066D
NH3-N PhOS-DIS PHOS-TGT
10TAL ORTHO
MG/L
0.
C.
0.
0 .
0 .
0.
0.
0.
0.
0.
0.
0.
0.
u.
180
089
063
087
039
016
016
013
050
100
067
046
147
038
MG/L
0.
0.
0.
0.
0.
0.
0.
0 •
0.
0.
0.
0.
0.
0.
(J
007
Oil
007
017
014
016
007
OlO
008
036
013
006
012
007
MG/L P
0.029
0.02b
0.020
0.02b
0.030
0.030
0.020
0.060
0.035
0.095
0.025
0.020
0.035
0.030
-------
STOKET *ETkIEVAL DATE 75/03/0-+
2669G1 L62bb9Gi
47 01 00.0 088 01 30.0
PIKE K1VEK
26 15 HOUGH TON
T/POKFAGE LAKE
05 41 BKUG
HEPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/10/29
72/12/03
73/01/07
73/02/03
73/03/0*
73/04/07
73/04/28
73/05/06
73/05/19
73/06/02
73/07/15
73/08/23
73/09/10
73/10/07
00630 00623
TIME DtPTH N02&N03 TOT KJEL
OF N-TOTAL N
OAY FEET
10
11
10
10
09
09
10
10
15
10
10
16
15
11
30
18
50
17
40
56
39
36
55
54
45
<+5
30
00
MG/L
0
j
0
0
0
0
0
0
0
0
u
0
0
0
.2/7
.105
.176
.168
.230
.072
.034
.590
.050
.019
.031
.026
.460
.042
MG/L
2.
0.
0.
1.
1.
0.
0.
1.
1.
0.
0.
1.
0.
2.
300
770
850
760
980
400
400
080
MOO
^+<+0
340
800
5?0
*00
OU610 00671 00665
NH3-N PHOS-UIS PHOS-TOT
TOTAL 0*FHO
MG/L
0.
0.
0.
u .
0.
0.
0.
0.
0 .
0.
.0.
0.
0.
0.
710
027
072
110
098
019
016
056
04^
031
027
140
176
140
MG/L
0.
0.
0.
0.
0.
u.
0.
0 .
0.
0.
0.
0.
0.
0.
p
005K
008
010
014
017
008
007
010
007
009
009
130
020
0*3
MG/L P
0.022
0.018
0.023
0.025
O.ObO
0.020
0.020
0.035
0.025
0.020
0.030
0.2/0
0.055
0.16J
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/02/04
2669H1 LS2669H1
47 Ob 00.0 088 31 00.0
PILGKIM RIVER
26 Ib rtOUGHTON
T/POR1AGE LAKE
US VI riRDO
llEPALtb 2111204
H 0000 FEET
DATE
FROM
TO
72/10/29
72/12/03
73/01/07
73/02/03
73/03/04
73/04/07
73/04/28
73/05/Ob
73/U5/19
73/06/02
73/07/15
73/08/23
73/09/10
73/10/07
OC/63J 00625
TIME DEPTH N025.N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
10
09
09
08
09
10
09
15
11
10
16
LS
10
15
18
31
10
45
46
03
23
14
25
30
55
15
45
MG/L
0
0
J
U
a
0
0
c
u
0
0
0
(J
0
.286
.580
.670
.74u
.550
.200
.330
.294
.294
.300
.550
.062
.0<*0
.063
MG/L
0.
0.
1.
0.
0.
1.
0.
0.
1.
0.
0.
0.
0.
700
720
100
480
580
200
680
920
300
250
100K
380
700
00610 00671 00665
NH3-N PnOS-DIS PhOS-TOT
TOTAL OHTHO
MG/L
0*
0.
0.
u.
0.
0.
0.
c.
0.
G.
0.
0 •
0.
0.
082
0<*4
126
240
072
016
058
015
044
066
023
014
260
069
MG/L
0.
0.
0.
0.
0.
u .
u.
0.
0.
0.
3.
J.
0.
0.
p
006
025
034
072
032
014
020
019
021
019
024
005K
033
012
MG/L P
0.015
0.035
O.U46
0.105
0.055
0.030
0.030
0.055
0.035
0.025
0.040
0.020
0.055
0.025
DEPTH
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOKET RETRIEVAL DATE 75/02/04
DATE
FROM
I IMt DEPTH
OF
00630
TO DAY FEET Mb/L
TuT
N
MG/L
73/01/31 08 00
CP(T>-
73/02/01 08 00
73/02/27 00 00
CP(T>-
73/02/27 24 Oo
73/04/03 08 00
CP ( T ) -
73/04/04 08 00
73/04/27 08 1.10
CPU1-
73/04/2H 08 00
73/06/27 OS 00
CPIT1-
73/06/28 08 00
73/07/30 08 00
CPIT1-
73/07/31 08 00
73/06/30 00 00
CP(T>-
73/UB/30 24 00
7J/09/26 00 00
CV ( T ) -
73/09/26 24 00
73/10/31 00 00
73/10/31 ?4 uO
73/11/29 uO 00
CP( D-
73/11/29 24 oo
73/12/27 00 00
CP(T)-
73/12/2* 24 00
74/01/30 On dJ
CP(T)-
74/01/31 08 00
0.1SS 15.000
0.175 l4.7U'j
13.200
3.900
1 .200
1.20J
U'
1.890
2b69ao AS266950 PU12000
•+7 u7 30.0 088 3b 00.0
HouoriION-HANCOCK
26061 15 HOUbriTON
u/POkrAGt LAKE
POKTA6E LAl\E
11EPALES 2141204
4 0000 FEET DEPTH
00671 0066'3 SOObl 50053
is PMOS-TOT FLO* CONDUIT
TOTAL OKTMO KATE FLO*-MGO
i-K'j/L Mb/L P MG/L P IMST MGD MONTHLY
i.bOO 3.800 H.700 1.720
?.600 3.600
1.100 2.UOO
.'J.230 1.700
. 160
.9 l\j
t.600
0.3*0 2.800 3.300 1.750
3./00 2.200
0.5oO 2.300 2.600 2.150
2.2oO
3.300 2.070
1.760
1.660 1.660
2.3uO 3.700 1.920 2.320
1.920 1.980
1.830
2.415 2.270 1.800
2.170
1.700
1.650
1.770
6.40u 1.550 1.650
1.590 1.530
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/02/04
266950 AS266950
47 07 30.0 086 36 00.0
HOUGHTON-HANCOCK
26061 15 HOUGHTON
0/POKTAGE LAKc
PORTAGE LAKE
P012000
11EPALES
4
DATE
FROM
TO
74/02/28
CP(T)-
74/02/28
TIME DEPTH
OF
DAY FEET
00 00
24 00
OU630
IM02MM03
N-TOTAL
MG/L
3.500
U0625
TUT KJEL
N •
MG/L
5.900
00610
NH3-N
TOTAL
MG/L
0.140
00671
PhOS-OIS
ORTHO
MG/L P
3.000
00665
PHOS-TOT
MG/L P
6.800
50051
FLO*
RATE
INST MGD
l.HOC
2141204
0000 FEET
50053
CONDUIT
FLOn-MGD
MONTHLY
1.520
DEPTH
------- |