U.S. ENVIRONMENTAL PROTECTION AGENCY
               NATIONAL EUTROPHICATION SURVEY
                         WORKING PAPER SERIES
                                             REPORT
                                              ON
                                            FORD LAKE
                                            MICHIGAN
                                          EPA REGION V
                                       WORKING PAPER No, 193
           PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
                         An Associate Laboratory of the
             NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
                                  and
       NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
•aaPO	697.032

-------
                                    REPORT
                                      ON
                                   FORD LAME
                               WASKTENAW COUMY
                                   MICHIGAN
                                 EPA REGION V
                             WORKING PAPER No,  193
       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 Maps                              v, iv

  Sections
  I.   Conclusions                                            1
 II.   Lake and Drainage Basin Characteristics                 4
III.   Lake Water Quality Summary                             5
 IV.   Nutrient Loadings                                      9
  V.   Literature Reviewed                                   14
 VI.   Appendices                                            15

-------
                                n
                         LOR.IW.iKi


    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)], clean lakes [§314(a,b)j,
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.

-------
                                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
White
COUNTY

Allegan
Ka lamazoo
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

-------
YPSILANTI
                                   51,
      FORD and  BELLEVILLE  LAKES
(g) Tributary Sampling  Site    £§Indirect Drainage Area
X Lake Sampling Site        Y/A Urban Area
^ Sewage Treatment Facility
                              2          3 Mi.
                           	j	i	
                       Scale
                                                                              Map Location
                                                            83°30'
                                                                                               42°12-
                                                                                                 83°26'

-------
POflMGE,
  LAKE
                                                                                                            OAKLAND  CO.
                                                                                                                                          4^20-
                                 FORD  and BELLEVILLE LAKES
                                                       Indirect Drainage Area
                                                       Urban Area
  Tributary Sampling Site
x Lake Sampling Site
f Sewage Treatment Facility
                    33° 50'

-------
                             FORD LAKE
                          STORE! NO. 2629

I.  CONCLUSIONS
    A.  Trophic Condition:
            Survey data and the records of others (Ketelle and Uttormark,
        1971) indicate that Ford Lake is eutrophic.  Near depletion of
        dissolved oxygen occurred at the 25-foot depth at station 2 in
        June, and Survey limnologists noted a widespread blue-green algal
        bloom during the September sampling.
            Of the 35 Michigan lakes sampled in November when essentially
        all were well-mixed, 22 had less mean total phosphorus, 24 had
        less mean dissolved phosphorus, and 30 had less mean inorganic
        nitrogen; of all 41 Michigan lakes sampled, 25 had less mean
        chlorophyll a_, and 26 had greater Secchi disc transparency*.
    B.  Rate-Limiting Nutrient:
            A significant loss of phosphorus occurred in the algal assay
        sample between the time of collection and the beginning of the
        assay, and the results are not representative of conditions in
        the lake at the time the sample was taken.  However, the lake
        data show phosphorus to be limiting in September and November
        and nitrogen to be limiting in June.
* See Appendix A.

-------
    C.  Nutrient Controllability:
            1.  Point sources—During the sampling year, Ford Lake
        received a total phosphorus load at a rate about eight times
        the rate proposed by Vollenweider (in press) as "dangerous";
        i.e., a eutrophic rate (see page 13).  Now, Ford Lake has a
        rather short hydraulic retention time of 15 days, and Vollen-
        weider's model may not be applicable.  Nonetheless, the exist-
        ing trophic condition of the lake is evidence of excessive
        nutrient loads.
            It is calculated that the municipal waste treatment plants
        included in this study contributed about 92% of the total phos-
        phorus load.  The Ann Arbor plant, with phosphorus removal,
        contributed about 42% of the total load, and the remaining
        three plants (Ypsilanti, Scio-Webster, and Dexter) contributed
        a little over 50%.  Removal of 85% of the phosphorus at the
        •three municipal point sources now without phosphorus control
                                                 2
        would reduce the loading rate to 9.26 g/m /yr or less than five
        times the eutrophic rate.
            Considering the questionable applicability of Vollenweider's
        model, it is likely that the degree of phosphorus removal noted
        above would improve the trophic condition of Ford Lake and, in
        particular, would reduce the incidence and severity of nuisance
        algal blooms.  Also, downstream Belleville Lake* would benefit
* Working Paper No. 184.

-------
from phosphorus control since only 19% of the phosphorus load
to Ford Lake is retained in the lake; i.e., about 81% of the
point-source load to Ford Lake impacts Belleville Lake as well.
    2.  Non-point sources—It is estimated that non-point
sources, including precipitation; contributed 7.5% of the total
phosphorus load during the sampling year.
    The phosphorus export of the Huron River was quite low as
compared to other Michigan streams sampled during the Survey
year (see page 13).

-------
II.   LAKE AND DRAINAGE BASIN CHARACTERISTICS
     A.   Lake Morphometry :
         1.   Surface area:   1,050 acres.
         2.   Mean depth:   14.3  feet.
         3.   Maximum depth:   39 feet.
         4.   Volume:  15,015 acre-feet.
         5.   Mean hydraulic  retention  time:   15 days.
     B.   Tributary and Outlet:
         (See Appendix B  for flow data)
         1.   Tributaries  -
             Name                             Drainage area* Mean flow*
                                                         2
             Huron River                          809.0 mi    494.9 cfs
             Minor tributaries  &                         2
              immediate drainage -                 3.4 mi      2.8 cfs
                          Totals                 812.4 mi2   497.7 cfs
         2.   Outlet -
             Huron River                          814.0 mi2** 497.7 cfs
     C.   Precipitation***:
         1.   Year of sampling:   40.6  inches.
         2.   Mean annual:  39.9 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".

-------
III.  LAKE WATER QUALITY SUMMARY
      Ford 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 (15 feet
  to surface) sample was composited from the two stations  for phytoplank-
  ton identification 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  ^analyses.  The maximum depths
  sampled were 15 feet  at station 1, and 25 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 was essentially well-
  mixed, are summarized below.  Note, however, the Secchi  disc summary
  is based on all values.
      For differences in the various parameters at the other sampling
  times, refer to Appendix C.

-------
A.  Physical and chemical characteristics:

                                    FALL VALUES
    Parameter

    Temperature (Cent.)
    Dissolved oxygen  (mg/1)
    Conductivity (ymhos)
    pH (units)
    Alkalinity (mg/1)
    Total P (mg/1)
    Dissolved P (mg/1)
    N02 + N(h (mg/1)
    Ammonia Img/1)
        (11/13/72)

Minimum       Mean
  7.5
  8.6
510
  8.1
193
  0.077
  0.050
  0.570
  0.710
          Median
          Maximum
7.5
9.4
524
8.1
196
0.105
0.058
0.702
0.834
7.6
9.0
520
8.1
195
0.110
0.060
0.570
0.860
7.7
11.0
550
8.2
202
0.118
0.062
1.220
0.900
                                      ALL VALUES
    Secchi disc (inches)
 21
44
44
64

-------
B.  Biological  characteristics:

    1.  Phytoplankton -
        Sampling
        Date

        06/16/72
        09/19/72
        11/13/72
Dominant
Genera
1.
2.
3.
4.
5.


1.
2.
3.
4.
5.


1.
2.
3.
4.
5.

Oocystis
Schroederia
Dinobryon
Cocconeis
Cryptomonas
Other genera
Total
Anabaena
Flagellates
Lyngbya
Stephanodiscus
Cryptomonas
Other genera
Total
Cyclotella
Stephanodiscus
Melosira
Navicula
Raphidiopsis
Other genera
Number
per ml

1,501
1,302
  741
  434
  416
1.013

5,407
2,
1,
1,
                                          Total
  981
  660
  132
  566
  415
2.680

9,434

  275
  166
  137
  137
  137
  804

1,656

-------
                             8
    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)	
        06/16/72               01                        16.2
                               02                        26.5
        09/19/72               01                         6.4
                               02                         5.0
        11/13/72               01                         2.6
                               02                        31.7
C.  Limiting Nutrient Study:
        A 31% loss of phosphorus occurred in the algal  assay sample
    between the time of collection and the beginning of the assay,
    and the results are not indicative of conditions in the lake at
    the time of sampling.
        The lake data indicate phosphorus limitation in September
    (N/P ratio was 15/1) and November (N/P = 26/1) but nitrogen
    limitation in June (N/P =9/1).

-------
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 vi),  except for the  high
 runoff months of March, April,   and December,  when two samples  were
 collected from station A-l;  two samples  were collected from station
 A-2 during April  and December.   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 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
 determined by using a modification  of a  U.S. Geological Survey
 computer program for calculating stream  loadings*.  The nutrient
 loads given for the Huron River are those measured at  station A-2
 minus the upstream point sources.
     Nutrient loadings for unsampled "minor tributaries and immediate
 drainage" ("ZZ" of U.S.G.S.) were estimated by using the  means  of the
 nutrient concentrations in Mill Creek at station D-l and  multiplying
 by  the mean ZZ flow.
 *  See  Working  Paper No.  1.

-------
                                 10
    The operators of the Ann Arbor, Dexter, Scio-Webster, and Ypsilanti
wastewater treatment plants provided effluent samples and corresponding
flow data.
    A.  Waste Sources:
        1.  Known Municipal* -

        Name
        Ann Arbor
        Dexter
        Scio-Webster
        Ypsilanti
        2.  Industrial - Unknown
Pop.
Served
100,000
1,700
500
21 ,000
Mean Receiving
Treatment Flow (mgd) Water
act. sludge
+ P-removal
prim.
clarifier
trickling
filter
act. sludge
16.477
0.235
0.088
7.120
Huron River
Mill Creek
Huron River
Ford Lake
* Sprow, 1974.

-------
                                 11
    B.  Annual Total Phosphorus Loading - Average Year:
        1.  Inputs -
                                              Ibs P/         % of
            Source                            yr	         total
            a.  Tributaries (non-point load) -
                Huron River                    10,940          7.2
            b.  Minor tributaries & immediate
                 drainage (non-point load) -      390          0.3
            c.  Known municipal STP's -
                Ann Arbor                      63,790         42.1
                Dexter                          7,090          4.7
                Scio-Webster                    1,160          0.8
                Ypsilanti                      67,930         44.8
            d.  Septic tanks - Unknown
            e.  Industrial - Unknown
            f.  Direct precipitation* -           160          0.1
                         Total                151,460        100.0
        2.  Outputs -
            Lake outlet - Huron River         122,780
        3.  Net annual P accumulation - 28,680 pounds
* See Working Paper No. 1.

-------
                                 12
    C.  Annual Total Nitrogen Loading - Average Year:
        1.  Inputs -
                                              Ibs N/         % of
            Source                            yr	         total
            a.  Tributaries (non-point load) -
                Huron River                 1,475,530         59.9
            b.  Minor tributaries & immediate
                 drainage (non-point load) -   16,360          0.7
            c.  Known municipal STP's -
                Ann Arbor                     780,380         31.7
                Dexter                         26,710          1.1
                Scio-Webster                    3,260          0.1
                Ypsilanti                     151,490          6.1
            d.  Septic tanks - Unknown
            e.  Industrial - Unknown
            f.  Direct precipitation* -        10.120          0.4
                         Total              2,463,850        100.0
        2.  Outputs -
            Lake outlet - Huron River       2,167,580
        3.  Net annual N accumulation - 296,270 pounds
* See Working Paper No. 1.

-------
                             13
D.  Mean Annual Non-point Nutrient Export by Subdrainage Area:
                                                  2              2
    Tributary                             Ibs P/mi /yr   Ibs N/mi  /yr
    Huron River                               14            1,824
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/nr/yr
Total
144.2
16.17
Accumulated
27.3
3.06
Total
2,346.5
263.0
Accumulated
282.2
31.6
    Vollenweider loading rates for phosphorus
     (g/m^/yr)  based on mean depth and mean
     hydraulic  retention time of Ford Lake:
        "Dangerous"  (eutrophic rate)       1.96
        "Permissible"  (oligotrophic rate)  0.98

-------
                                 14
V.  LITERATURE REVIEWED

    Fetterolf, Carlos, 1972.  Personal communication (lake morphometry).
        MI Dept. of Nat. Resources, Lansing.

    Ketelle, Martha J., and Paul D. Uttormark, 1971.  Problem lakes  of
        the United States.  EPA Water Poll. Contr.  Res.  Ser., Proj.
        #16010 EHR.

    Sprow, David L., 1974.  Personal communication  (wastewater treatment
        plants).  MI Dept. Publ. Health, Lansing.

    Vollenweider, Richard A. (in press).  Input-output models.  Schweiz.
        Z. Hydro!.

-------
                                  15






VI.  APPENDICES
                            APPENDIX A
                           LAKE RANKINGS

-------
LAKE DATA TO BE USED IN RANKINGS

LAKE
CODE  LAKE NAME
26AO  HOLLOWAY RESERVOIR
26Ai  CARO RESERVOIR
26A2  BOAHDMAN HrDRO PONO
2603  ALLEGAN LAKE
2606  BARTON LAKE
2609  BELLEVILLE LAKE
2610  BETS1E LAKE
2613  BRIGHTON LAKE
26»7  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
-------
LAKE DATA TO BE USED IN RANKINGS

LAKE
CODE  LAKE NAME
Z693  ST LOUIS RESERVOIR
2694  CRYSTAL LAKE
2695  HIGGINS LAKE
2696  HOUGHTON LAKE
269?  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 VALUtb-
MEAN
DISS P
0.093
0.006
0.005
0.008
0.029
0.024
0.050
MEAN
INURCi 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
CHLOWA
5.583
2.986
1.043
9.217
11.967
11.833
11.117
15-
MIN DO'
8.420
13.000
9.400
8.200
14.800
8.600
13.600

-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES KITH HIGHER VALUES)

LAKE
CODE  LAKE NAME
26AO  HOLLOWAY RESERVOIR
26Ai  CARD RESERVOIR
26AZ  BOAKOMAN HYDRO POND
2603  ALLEGAN LAKE
2606  BARTON LAKE
2609  BtLLEVILLE LAKE
2610  BETSIE LAKE
2613  BRIGHTON LAKE
2617  LAKE CHAKLEVOIX
2618  LAKE CHEMUNG
2621  CONSTANTINE RESERVOIR
2629  FORD LAKE
2631  FREMONT LAKE
26<>0  JORDAN LAKE
2643  KENT LAKE
2648  LAKE HACATAWA
2649  MANISTEE LAKE
2659  MUSKEGON LAKE
2665  PENTWATER LAKE
2671  RANDALL LAKE
2672  ROGERS POND
2673  ROSS RESERVOIR
2674  SANFORD LAKE
2683  THORNAPPLE LAKE
2685  UNION LAKE
2688  WHITE LAKE
2691  MONA LAKE
2692  LONG LAKE
MEAN MEAN
TOTAL P UISS 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>
( 271
( 11)
I 32)
( 17)
( 25)
( 12)
( 0)
( 4)
( 20)
( 3)
( 28)
I 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
10
63
6
66
57
80
46
26
60
3
9
I IS)
( 19)
I 34)
( 11)
( 7)
( 13)
( 27)
< 8)
( 32)
( 25)
1 29)
( 10)
( D)
( 4)
I 24)
( 5)
( 26)
( 14)
( 22)
( 2)
( 23)
( 20)
1 28)
( 16)
I 9)
I 21)
I 1)
( 3)
MEAN
INOHG 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)
I 5)
( 7)
( 28)
( 12)
( 29)
( 33)
( 14)
( 4)
( 8)
( 2)
( 22)
( 1)
( 27)
( 19)
( 18)
( 15)
( 30)
( 20)
( 26)
( 3)
I 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
1 20)
< 1)
(32)
( 2)
( 9)
( 4)
( 6)
( 12)
( 33)
( 30)
( 9)
I 9)
( 19)
( 24)
( 14)
( 0)
( 16)
( 21)
I 23)
1 8)
( 22)
1 3)
( 7)
I 18)
I 13)
( 28)
( 15)
( 27)
MEAN
CHLOHA
60
49
94
29
14
11
86
0
89
46
3
37
9
26
6
23
80
69
31
20
77
63
43
40
34
74
17
66
I 21)
( 17)
( 33)
I 10)
( 5)
( 4)
I 30)
( 0)
( 31)
I 16)
( 1)
( 13)
( 3)
( 9)
( 2)
( 8)
( 28)
( 24)
( 11)
( 7)
( 27)
( 22)
( 15)
( 14)
( 12)
I 26)
I 6)
( 23)
15-
MIN 00
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)
( 21
( 2)
( 30)
( 18)
( 26)
( 25)
( 17)
I 26)
( 11)
I 7)
( 9)
INDEX
NO
286
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
123
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 MARQUETTE LAKE

2699  STRAWBERRY LAKE
MEAN MEAN
TOTAL f> OISS 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)
500-
MtArt SEC
14
89
97
71
83
49
74
( b)
( 31)
( 34)
( 25)
( 29)
( 17)
( 26)
MEAN
CHLORA
83
91
97
71
51
54
57
( 29)
( 32)
( 34)
( 25)
( 18)
( 19)
( 20)
15-
MIN 00
69
36
57
79
11
66
27
( 24)
( 12)
( 20)
( 26)
( 2)
( 23)
( 9)
INDEX
NO
2
-------
     APPENDIX B
TRIBUTARY FLOW DATA

-------
                                   TRIBUTARY FLOW INFORMATION FOR MICHIGAN
                                                                              a/3/75
LAKE CODE 2629
       FORD LAKE
     TOTAL DRAINAGE AREA OF LAKE(SO MI)   814.00
          SUB-DRAINAGE
TRIBUTARY  AREA(SO MI)
2639A1
2629A2
2629ZZ
814.00
809.00
  5.00
   JAN

537.00
477.99
  2.80
   FEB

629.00
606.02
  3.50
                                          MAR
                                                  APR
                                                          MAY
                                                    NORMALIZED FLONS(CFS)
                                                      JUN     JUL     AUG
963.
996.
5.
.00
.90
.70
977.
1022.
5.
.00
.13
.90
678
707
4
.00
.38
.10
386
441
2
.00
.71
.50
252.00
244.26
  1.40
185.00
177.11
  1.00
   SEP

205.00
216.59
  1.20
   OCT

285.00
267.81
  1.50
   NOV

406.00
365.96
  2.10
                                                                                                                  DEC
                                                  MEAN
482.00  497.74
427.85  494.90
  2.50    2.84
                                                                   SUMMARY
                        TOTAL DRAINAGE AREA OF LAKE =    814.00
                        SUM OF SUB-DRAINAGE AREAS   =    814.00

     MEAN MONTHLY FLOWS AND DAILY FLOWS(CFS)
                                                                  TOTAL FLOW IN
                                                                  TOTAL FLOW OUT
                                                                          5985.89
                                                                          5985.00
TRIBUTARY   MONTH   YEAH
2629A1
2629A2
2629ZZ
                            MEAN FLOW  DAY
                                       FLOW  DAY
                                                                     FLOW  DAY
                                                                                       FLOW
10
11
12
1
2
3
4
5
6
7
a
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
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
72
72
72
73
f -J
f J
73
73
73
73
73
73
73
324.00
689.00
734.00
1120.00
648.00
1540.00
1160.00
867.00
808.00
602.00
508.00
238.00
322.00
685.00
729.00
1110.00
644.00
1540.00
1150.00
861.00
803.00
599.00
505.00
237.00
2.00
4.20
4.50
6.80
4.00
9.40
7.10
5.30
4.90
3.70
3.10
1.50
28
24
16
13
10
11
15
31
26
24
28
27
28

2
13
10
11
15
31
26
24
28
27











600.00
703.00
724.00
785.00
793.00
1490.00 25
883.00 30
1260.00
515.00
363.00
282.00
166.00
596.00

629.00 16
781.00
789.00
1480.00
877.00 25
1250. 00
512.00
361.00
280.00
165.00
















2030.00
528.00







719.00



1220.00

















-------
        APPENDIX C
PHYSICAL and CHEMICAL DATA

-------
STORET RETRIEVAL DATE 75/02/04
                                                                  262901
                                                                 42 13 30.0 083 3b 30.0
                                                                 FORD LAKE
                                                                 26      MICHIGAN
                      U0010
  DATE   TIME DEPTH  WATER
  FROM    OF          TEMP
   TO    DAY  FEET    CENT

72/06/16 IB 05 0000     22.4
         18 05 0015     21.0
72/09/19 09 30 0000
         09 30 0004     21.3
72/11/13 12 25 0000      7.5
00300     0U077     00094
 oo      TKANSP   CNOucrvY
         SECCHl   FIELD
MG/L     INCHES   MICROMHO
  10.6
   6.0

   6.0
  11.0
54

21

38
530
535
540
540
550
11EPALES
4
00400
PH

SU
fa. 29
7.91
7.45
7.55
8.20

00410
T ALK
CAC03
MG/L
190
191
162
160
202
2111202
0020
00630
N026.N03
N-TOTAL
MG/L
0.450
0.420
0.710
0.740
1.220
FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.440
0.630
0.900
0.800
0.710
00665
PHOS-TOT

MG/L P
0.113
0.142
0.158
0.161
0.077
00666
PHOS-OIS

MG/L P
0.087
0.108
0.107
0.106
0.050
                      32217
  DATE   1IME DEPTH CHLKPHYL
  FROM    OF           A
   TO    DAY  FEET    UG/L

72/06/16 18 05 0000     16.2J
72/09/19 09 30 0000      6.4J
72/11/13 12 25 0000      2.6J
                 J  VALUE  KNOWN  TO  BE  IN  ERROR

-------
STOKE.T RETRIEVAL DATE 75/02/04
                                                                  262902
                                                                 42 12 30.0 083 34 30.0
                                                                 FO*U LAKE
                                                                 26      MICHIGAN
  DATE   TIME DEPTH
  F«OM    OF
   TO    DAY  FEET

72/06/16 18 20 0000
         18 20 0015
         18 20 OU25
72/09/19 10 00 0000
         10 00 0004
         10 00 001S
         10 00 0025
72/11/13 12 00 0000
         12 00 0004
         12 00 0015
         12 00 0020
00010
rtATEK
TEMP
CENT
22.8
22.7
20.2
22.0
21.9
21.3
7.7
7.7
7.6
00300
DO

MG/L
9.0
9.0
1.0
8.9
H.4
4.2
9.2
8.8
8.6
 00077     00094
TRANSP   CNOUCTVr
SECCHI   FltLO
INCHES   MICROMHO
     64
     bo
     36
580
520
515
560
560
555
565
510
520
520
520
11EPALES
4
00400
PH

SU
8.32
8.23
7.58
8.18
8.20
8.18
7.68
8.10
8.10
8.10
8.10

00410
T ALK
CAC03
MG/L
183
182
197
144
143
l<+4
148
194
193
195
195
2111202
0028
00630
N02&N03
N-TOTAL
MG/L
0.280
0.280
0.320
0.370
0.370
0.380
0.340
0.580
0.570
0.570
0.570
FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.300
0.340
0.940
0.230
0.230
0.240
0.720
0.840
0.860
0.900
0.860
00665
PHOS-TOT

MG/L P
0.099
0.094
0.172
0.071
0.072
0.063
0.112
0.110
0.115
0.107
0.116
00666
PHOS-DIS

MG/L P
0.070
0.065
0.136
0.047
0.046
0.040
0.069
0.061
0.060
0.062
0.059
                      3??17
  DATE   TIME DEPTH CHLWPriYL
  FROM    OF           A
   TO    DAY  FEET    UG/L

72/06/16 18 20 0000     26.5J
72/09/19 10 00 0000      5.0J
72/11/13 12 00 0000     31.7J
                    J  VALUE  KNOWN TO BE IN EURO*

-------
       APPENDIX D
TRIBUTARY and WASTEWATER
  TREATMENT PLANT DATA

-------
STORE! RETRIEVAL DATE 75/02/04
                                                                  2o29A2          LS2629A2
                                                                 42 It 00.0 063 3b 00.0
                                                                 HURON RIVER
                                                                 26      7.5 YPSILANTI E
                                                                 1/FORU LAKE (RESERVOIR)
                                                                 SPRING AVE bRDG SE OF' YPSiLANTI
                                                                 HEPALES             2111204
                                                                 t                   0000 FEET  DEPTH
DATE
FROM
TO
72/10/28
73/01/13
73/02/10
73/03/11
73/04/15
73/04/25
73/04/3U
73/05/31
73/Ob/2b
73/07/24
73/08/28
73/09/27
OC630 00625
TIME DEPTH NO:?A,MU3 TOT KJtL
OF N- TOTAL N
DAY FEET
14
14
13
09
12
15
11
11
11
18
18
09
05
40
15
30
15
43
?8
00
30
49
47
32
MG/L
0
0
J
0
0
u
0
0
0
0
0
0
.650
.810
.820
.900
.380
.810
.3tO
.520
.520
.750
.590
.570
MG/L
1.
2.
1.
3.
1.
0.
2.
1.
1.
1.
1.
1.
500
f>00
365
500
100
920
300
BOO
050
380
380
000
00610 00671 00665
IMM3-IM PHOS-OIS PHOb-TOT
TOTAL ORTHO
MG/L
G.
ii •
U.
u •
0.
u .
0 .
0.
a.
0.
0.
u .
680
336
31b
252
240
140
425
178
147
058
100
2aO
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
.025
.027
.025
.031
.015
.013
.Git
.037
.095
.078
.046
.039
MG/L P
0.070
0.060
0.060
0.110
0.045
0.055
0.105
0.067
0.140
0.110
0.090
0.075

-------
STOREY RETRIEVAL 04ft 75/02/04
                                                                  2rt29A3          LS2629A3
                                                                 42 15 30.0 083 3fa 30.0
                                                                 HURON RIVER
                                                                 26      7.5 ANN ARbOR t
                                                                 1YFORU LAKE (RESERVOIR)
                                                                 SUPERIOR KO bRDG iM YPSILANTI UELO  STP
                                                                 11EPALLS             2111204
                                                                 4                   0000 FEET  DEPTH

DATE
FROM
TO
72/10/28
72/11/24
73/02/10
73/03/11
73/04/15
73/04/25
73/04/30
73/05/31
73/06/26
73/OB/28

TIME DEPTH
OF
DAY FEET
13 35
10 15
13 43
OS 30
13 00
15 27
11 14
10 45
11 07
1ft 30
00630
NO?«,N03
N- TOTAL
MG/L
0.3^0
0.940
0.770
U.930
0.360
0.810
0.273
0.<»VO
0.357
'J.357
00625
TOT KJEL
N
MG/L
1.450
1. lOu
i.260
3.300
1.150
l.vjOO
1.38o
3.300
1.320
l.c
-------
STORET RETRIEVAL DATE 75/02/J*
                                                                  2o29A4          LS2629A4
                                                                 42  16 30.0 083 40  30.0
                                                                 HUKOiM RIVER
                                                                 26       7.b ANN ARBOK E
                                                                 T/FORD LAKE (RESERVOIR)
                                                                 01XEBORO bKOG E US 23 ABOV  YPSILANTI  STP
                                                                 11EPALES             2111204
                                                                 4                    0000 FEET   DEPTH
DATE
FROM
TO
72/10/28
72/12/16
73/01/13
73/02/10
73/03/11
73/04/15
73/04/25
73/04/30
73/05/31
73/06/26
73/07/24
73/00/28
73/09/27
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
13
14
13
13
09
12
15
11
10
10
18
18
09
25
32
00
32
30
45
20
20
35
52
25
18
15
MG/L
0
1
0
u
o
0
0
J
0
0
0
0
0
.260
.120
.660
.660
.850
.330
.780
.230
.340
.138
.084
.013
.096
MG/L
1.
1.
?.
0.
2.
0.
0.
1.
1.
u.
0.
1.
1.
750
<*00
9<+0
840
700
750
970
000
150
860
84u
470
000
00610 00671 00665
NH3-N PnOS-UIS PHOS-iOT
TOTAL ORMO
M'j/L
0.
0.
0 .
0.
0 .
0.
0.
0.
i).
0 .
0.
0 .
0.
168
150
270
048
700
027
023
o25
126
048
Oil
046
089
HG/L P
0
0
0
0
0
0
0
0
0
0
u
0
0
.020
.024
.021
.013
.015
.006
.011
.005K
.021
.027
.017
.005K
.016
Mb/L P
0.069
0.058
0.050
0.080
0.080
0.025
0.035
0.040
0.050
0.055
0.050
0.060
0.060
      K  VALUE KNO/VN TO 8E
      LE5S THAN INDICATED

-------
STOrtET KETKIEVAL DATE 75/OP/u4
                                                                  2b29A5          LS2629A5
                                                                 42 Itt OO'.O 083 45 00.0
                                                                 HUnON HIvEK
                                                                 26       (.6 ANN ArtbOK £
                                                                 T/FOkO LAKE (rtESEKvOIK)
                                                                 WHITMOrtE LAKE KD dKDG EUGE OF ANN ARbOk
                                                                 11EPALES             2111204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
72/10/28
72/12/lb
73/01/13
73/02/10
73/03/11
73/0<*/15
73/0<»/25
73/u<+/30
73/05/31
73/06/26
73/07/24
73/09/28
l/jfc30 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
12
15
12
12
08
12
14
10
10
10
17
17
23
19
25
55
45
10
52
30
08
19
55
38
MG/L
u
I
\j
0
0
•J
0
0
0
J
0
0
.320
.100
.630
.660
.840
.357
,60u
.2^+0
.3JO
. ItO
.2tO
.01 OK
MG/L
1.
2.
0.
0.
3.
0.
1.
0.
1.
0.
1.
1.
UJO
900
950
660
100
H20
05U
760
210
790
200
^UU
U0610 00671 0066b
NH3-N PiiOS-DIS PHOb-TOV
TOTAL ORTHO
MG/L
u .
j •
0.
'j .
i) .
U .
0 .
u •
0.
0.
0.
c.
150
215
490
08o
390
022
026
015
090
05b
026
031
MG/L
a.
a.
0.
0.
0.
0.
0 .
0.
0.
0.
0.
0.
p
U25
019
018
Oil
016
006
009
005K
Olo
020
090
005K
MG/L P
0.056
0.0^2
0.035
0.035
0.040
0.025
0.030
u.035
Oa040
0.055
0.145
0.045
      K VALUE KNOWN  TO  dE
      LESS THAN  INDICATED

-------
STORET RETRIEVAL OATF. 7b/d2/04
                                                                   2629A6          LS2629A&
                                                                  42 20 00.0 083 4b 30.0
                                                                  HjrtUlM KIVEK
                                                                  26      7.5 ANN ARdOR wl
                                                                  f/FOKO LAKE (RESERVOIR)
                                                                  brG IM OF DELHI BELOw SCIO-WtBSTEK  STP
                                                                  HEPALES             2111204
                                                                  t                   0000 FEET   DEPTH
DATE
FROM
TO
72/10/28
72/11/24
73/01/13
73/02/10
73/03/11
73/04/15
73/OW25
73/04/30
73/05/31
73/07/24
73/08/23
73/0^/27
00630 00625
TIME DEPTH N02oN03 TOT KJEL
OF N- TOTAL N
DAY FEET
09
08
13
15
10
12
1<*
08
0«
17
16
09
CO
50
40
00
45
35
00
41
55
11
56
54
Mo/L
0
0
0
0
J
0
d
0
•J
0
3
0
.234
.H75
.630
.610
.7VO
.350
.870
.252
.420
.085
.110
.150
MG/L
0.
3.
3.
0.
1.
0.
1.
0.
1.
1.
0.
1.
T50
400
000
750
500
750
380
680
600
000
655
()0(J
OU610 OU671 00665
NH3-N PHOS-UlS PHOS-TOT
TOTAL ORTHO
MG/L
iJ".
0.
0.
J.
0 .
0 .
0 .
0.
J.
J.
c.
0.
198
29o
220
073
07<+
060
052
019
320
007
021
058
MG/L
0.
0.
0.
y .
0.
0.
0.
0.
0.
0.
0.
u .
P
048
036
019
014
015
008
Oil
007
023
015
013
023
MG/L P
O.OS8
0.063
U . 0<+0
0.040
0.050
0.035
0.035
0.035
0.060
0.05o
0.055
0.050

-------
STOKET RETRIEVAL DATE  75/02/04
                                                                    2629A7           LS2629A7
                                                                   42  19  00.0 ob3 50 30.0
                                                                   HiJKOiM  KWErt
                                                                   £10       7.5 ANN AKriOK W
                                                                   T/FOKD LAr\£ (KE5EKVOIH)
                                                                   ohiUb rtSW DELHI A«OV SCIO-WEbSTER STP
                                                                   IIEPALES             21H204
                                                                   «*                    0000 FEET  DEPTH
DATE
FP.OM
TO
72/10/28
72/11/24
73/01/13
73/02/10
73/03/11
73/0<+/15
73/04/25
73/04/30
73/C5/31
73/06/26
73/07/24
73/08/28
73/09/27
TIME DEPTH ;MO?\N03 TOT KJEL
OF N-TGTAL N
DAY FEET
09
08
13
14
10
13
14
08
09
09
17
17
07
00
55
?0
45
15
00
OH
49
05
09
16
02
47
MG/L
(j
(.
0
a
o
;)
0
0
O
0
0
0
d
.?AJ
.8^5
.600
.590
.750
.357
.850
.240
.410
.160
.154
.126
.160
OiJ'blO U'^o71 OOt)t5D
NH3-N PhOS-DIS PHOS-TOT
TOT
-------
STORE! RETRIEVAL DATE 75/02/U4
                                                                  2629A8          LS2629A8
                                                                 42 23 00.U 083 54 30.0
                                                                 hUROiM RIVER
                                                                 26      7.5 PINCKNEY
                                                                 T/FORL) LAKE (RESERVOIR)
                                                                 N TtKKlTORAL RD 6RDG NEAR HUDSON MILLS
                                                                 11EPALES             211120^
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
72/10/28
72/11/24
72/12/16
73/01/13
73/02/10
73/03/11
73/04/15
73/04/25
73/04/30
73/05/31
73/06/26
73/07/24
73/08/28
73/09/27
00630 00625
TI^E DEPTH N02MM03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
09
14
13
14
11
13
14
10
09
09
17
17
07
15
20
24
10
30
00
15
31
07
50
52
36
22
30
MG/L
U
0
0
J
0
0
0
0
J
0
j
0
0
0
.045
. 16d
.210
.460
.420
.378
.231
.380
,03<+
.105
.030
.126
.Glo
.030
MG/L
1.
1.
1.
1.
0.
1.
1.
?..
0.
1.
0.
0.
0.
0.
H5u
^00
000
es90
750
b«G
150
<+CO
94U
boo
8?0
v2G
61C
840
00610 00671 00665
NN3-N PHOS-OIS PHOS-IOT
TOTAL ORTHO
M'3/L
u.
j.
0.
0 .
0.
0.
0.
0 .
o .
0.
a.
u.
0 .
0.
300
220
140
18o
039
092
u27
054
Oil
066
033
020
046
028
MG/L
0.
0.
0.
0.
0.
0.
0 .
J.
0.
0.
0.
0.
0.
0 .
p
068
040
023
015
006
007
005
005K
005K
OOri
007
019
005K
010
MG/L P
u.l 20
0.061
0.044
0.030
0.030
U.o3b
u.030
0.03o
0.040
0.02u
0.025
0.055
0.020
0.030
      K VALUE KNOWN TO BE
      LESS THAN INDICATED

-------
STORET RETRIEVAL DATE  75/02/J4
                                                                    2fc>2981           LS2629B1
                                                                  *2  Ib  00.0  083 40 30.0
                                                                  bjvlFT  LiRAlN
                                                                  26       7.3 ANN ARBOR E
                                                                  T/FORO LAr\E (RtSERVOiR)
                                                                  AING N£  HURON RIVER DRIVE rtUS 23
                                                                  HuPALES             2111204
                                                                  •+                   0000 FEET  DEPTH
DATE
FROM
TO
72/10/28
72/11/24
72/12/16
73/01/13
73/02/10
73/03/11
73/04/25
73/04/30
73/05/31
7 J/07/2t
73/08/28
73/09/27
CO 630
TIrtE DEPTH N024.N03 1
OF N- TOTAL
DAY FEET
13
12
14
12
13
09
15
10

1 3
!>}
09
10
00
41
50
?7
15
14
<+9

16
12
10
i-IG/L
0
1
3
1
1
v)
u
ij
0
0
0
v
.^20
.520
.600
.2bO
.5«0
.480
.500
.3 7v
.2^'j
• O'tti
. 2'3U
.126
00625
POT rCJEL
N
MG/L
1
p
2
3
0
4
1
u
p
1
p
C
.900
.400
,?5C
.900
.H<+0
.600
. 150
. 9HO
. ?oc
. 0 0 v
.300
.44U
00610 00671 006b5
!JHj-N KHOS-OIS PHOb-TOT
TOTAL oRTHO
M.G./L
0
J
0
I*
J
0
0
0
u
u
0
0
.150
.070
.205
.280
.027
.357
.u27
.022
.I6ri
. 1 1^
.094
.073
MG/L P
3
0
0
u
0
0
u
u
0
0
C
u
.017
.OOB
.015
.006
.007
.036
.009
• 005K,
.u32
.009
.017
.01H
MG/L P
0.120
0.032
0.055
0.040
0.035

0.055
0.035
0.090
U.025
0.045
u.035
  K VALUE KNOWN  TO  BE
  LESS  THAN

-------
STORET RETRIEVAL DATE 75/02/04
                                                                   2e>29Cl          LS2629C1
                                                                  42 IB 30.0 083 4B 30.0
                                                                  HONEY CREEK
                                                                  dd      7.5 ANN ARdOR wf
                                                                  IYFORO LAKE (RESERVOIR)
                                                                  MILLEK RO XING 2 MI Nirt ANN ARBOR
                                                                  HEPALES             2111204
                                                                  <*                   0000 FEET  DEPTH
DATE
FROM
TO
72/10/28
72/11/2*
72/12/16
73/01/13
73/02/10
73/04/15
73/04/30
73/05/31
73/06/26
73/07/24
73/08/28
73/09/27
00630 006?5
TIME DEPTH N02NN03 TOT KJtL
OF N-TOTAL N
DAY FEET
08
08
12
13
15
12
06
08
08
17
16
08
30
40
20
50
30
15
37
50
45
02
47
00
MG/L
0
y
1
I
1
•J
J
0
.)
0
y
j
.600
.3SU
.820
.360
.220
.840
.780
,46'J
.630
.35?
,ht>J
.960
MG/L
0 .
<+.
1.
2.
0 .
0.
0.
1.
0.
0.
1.
0.
350
700
2Uu
S20
780
870
840
150
630
89J
100
32J
00610 00671 00665
NM3-N PriOS-OIS PHOi-TOT
TOTAL UKTHO
MG/L
0.
u .
•J.
0 .
0.
u .
j .
0 .
u .
0.
0.
0.
120
198
ObU
16«
048
044
023
043
u29
044
040
027
MG/L
0.
0 .
0.
0 .
0 .
0 .
J.
0.
0.
0.
0.
0.
H
007
00 /
(jQf
OObK
OOSK
OOb
005K
015
008
023
005K
u08
MG/L P
0.025
0 . 02 1
0.028
0.015
0.020
0.020
O.u2o
0.040
0.035
0.045
0.030
0.025
  K VALUE KNOWN TO BE
  LESS THAN IiMOICATEO

-------
UATE 7b/02/04
                                                 2^2901          LS2b29Dl
                                                42 £0 00.0 OBJ 53 00.0
                                                MILL CrtEE*
                                                db       7.5 DtATEK
                                                T/KJKL) LAKE (rtESEWvOIrt)
                                                iSLANO LK bKDG NW DEXTER ABOVE  STH
                                                11EPALE5             2111204
                                                4                   0000 FEET   DEPTH
DATE
FROM
TO
72/10/2R
72/1 l/2<»
72/12/lb
73/01/13
73/02/10
73/03/11
73/04/15
73/04/25
73/04/30
73/05/31
73/06/26
73/07/24
73/08/28
73/09/27
TIME DEPT-
OF
JAl
10
09
12
13
14
11
13
14
09
Ow
09
17
17
07
r FEET
00
05
30
00
15
30
30
14
50
37
42
27
10
27
00630 0062:>
1 N02C.NOJ TOf KJEL
A- TOTAL N
MG/L
0
3
3
1
1
1
I
2
\j
j
0
y
0
0
.W50
.3cC
. l4u
.9<+y
.7^0
.960
.020
• 0 0 0
• ri r 0
.880
.530
.73o
.540
.720
MG/L
1.
3.
2? •
i.
0 .
2.
(i .
1.
0.
3.
1.
1.
0.
0.
200
OOu
10J
900
905
•tOU
9oO
200
*4J
100
050
4t?0
640
= 80
uObLO
TOTAL
M(i/L
u
u
i>
0
li
J
,)
0
0
tf
.0
0
0
i;
.189
.325
.169
.3oO
.154
.120
.048
.0'+2
.u49
. 12b
.063
.040
.044
.u75
00 b 1 \
^05-1)15 >
OR TriO
MG/L P
0
0
0
0
0
0
0
0
u
0
0
0
0
0
.046
.035
.029
.027
.026
.03b
.02r>
.016
.0 16
.031
.025
.016
.024
.026
OC6t>S
'HOS-TOT
MG/L P
0. 105
0.082
0.0/2
0.070
0.065
0.085
0.070
0 .05u
0 .060
0.082
0.095
0.025
0.0/5
O.ObO

-------
STORE! RETRIEVAL DATE 75/02/04
                                                                   262VE1          LS262SIE1
                                                                  42 17 30.0 083 44 00.0
                                                                  UNNAMED STREAM
                                                                  26      7.5 AiMN ARdOR £
                                                                  r/FORO LAKE (RESERVOIR)
                                                                  dRUADvtAY ST BRUG N RIVERVIE*  PARK
                                                                  HEPALES             2111204
                                                                  4                    0000 FEET  DEPTH
DATE
FROM
TO
72/10/28
72/11/24
73/03/11
73/0^/25
73/04/30
73/05/31
73/06/26
73/07/24
73/08/28
73/09/27
00630 00b25
THE DEPTH N02M\I03 TOT KJtL
OF K'-TOTAL M
DAr FEET
12
09
08
15
10
10
10
18
17
08
15
50
55
00
36
15
30
04
46
30
MG/L
0
1
0
0
{.,
0
o
0
0
0
.270
.020
.600
.750
.240
• 3?0
.168
.530
.01 7
.130
MG/L
1.
2.
3.
1.
0 •
1.
0 .
0.
1.
0 .
100
uOO
200
100
8*0
i'OO
78o
92o
200
680
00610 00671 00665
IMH3-N PrtOS-Dlb PhOS-fOT
TOTAL ORTrlO
MG/L
,j
0
U
0
0
•J
0
0
(J
J
.120
. 1 09
.535
.024
.032
.094
.U4H
.035
.04^
.075
MG/L
0.
0.
0.
0.
0 .
0.
0.
0.
0 .
0 .
p
022
036
022
007
005K
020
025
025
012
013
MG/L P
0.058
0.0h3
U. 120
0.030
0.0*5
0.045
0 .o60
0.060
0.080
o .0*5
        K  VALUE  KNOwiN  TO b£
        LESS  THAN  INDICATED

-------
STORET RETRIEVAL DATE 75/02/04
                                                                  262950          P0262950     P100000
                                                                 42 17 30.0 083 44 30.0
                                                                 ANN ARBOR
                                                                 26      7.5 ANN ARBOR E.
                                                                 T/FOKu-BELLEVILLE LAKES
                                                                 HURON RIVER
                                                                 11EPALES             2141204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
73/01/30
CP(T)-
73/01/31
73/02/08
CPU1-
73/02/08
73/03/28
CP(T)-
73/03/29
73/04/19
CP(T>-
73/04/19
73/05/26
CP(T>-
73/05/26
73/06/29
CP(T)-
73/06/29
73/07/31
CP(T)-
73/07/31
73/08/29
CP(T)-
73/08/29
73/10/11
CP(T)-
73/10/11
73/11/02
CP(T>-
73/11/02
73/11/27
CP(T)-
73/11/27
74/01/08
CP(T>-
00630
TIME DEPTH N02S.N03
OF N-TOTAL
DAY FEET MG/L
00

24
00

24
00

24
UO

24
00

24
UO

24
00

24
00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

5


4


1


0


8


3


6



.700


.800


.300


.685


.200


.200


.400


5.300
24
00

24
00

24
00

24
00

00
00

00
00

00
00

00
00



2


1


2


7


.730


.540


.000


.900
00625
TOT KJEL
N
MG/L

13


11


13


18


4


9


4


6


16


19


20


7

.000


.500


.800


.750


.300


.200


.200


.800


.000


.000


.000


.100
                                          00610     00671     00665     50051
                                         NH3-N    PHOS-OIS  PHOS-TOT    FLOW    CONDUIT
                                         TUTAL     ORTHO                RATE    FLOW-MOD
                                          MG/L     MG/L P    MG/L P   INST MGD  MONTHLY
                                           3.700     0.330
                                           1.380
                                           1.860     0.220
                                           a.000
          1.470    16.300    17.000
                                           4.620     0.170     0.875    16.100    16.300
                                           4.600     0.175     0.760    18.000    18.900
                                           7.650     0.240     0.970    16.400    16.800
                                           1.370     0.230     0.270    15.900    16.500
0.320     1.300    17.000    16.500
                                           0.140     0.530     1.050    13.400    15.800
                   15.700    15.500
                                           8.700     0.240     0.870    15.300    15.200
0.245     1.700    15.000    15.000
                                           3.780     0.530     4.200    17.100    16.400
                                           2.760     0.410     0.990    15.500    16.800

-------
STORET RETRIEVAL DATE 75/02/04
                      00630
  DATE   TIME DEPTH NOHt,N03
  FROM    OF        N-TOTAL
   TO    DAY  FEET    MG/L

74/01/29               3.900
                                                                   262950           P0262950     P100000
                                                                  42  17  30.0  083 44 30.0
                                                                  AiMN ARBOR
                                                                  26       7.5 ANN ARdOR E.
                                                                  T/FORD-bELLEVILLt LAKtS
                                                                  HJROixi  RIVER
                                                                  HEPALES             2141204
                                                                  4                   0000 FEET  DEPTH
00625
TO 1 KJEL
N
MG/L
12.000
00610
NH3-N
TOTAL
MG/L
0.170
00671
PHOS-DIS
ORTHO
MG/L P
0.200
00665
PHOS-TOT
MG/L P
0.720
50051
FLO*
RATE
INST MGD
19. tOO
50053
CONDUIT
FLOW-MOD
MONTHLY
17.500

-------
STORE! RETRIEVAL DATE 75/02/04
                                                                  262951          PR262951     P001700
                                                                 42 20 30.0 083 53 30.0
                                                                 UEXTER
                                                                 26      7.5 DEXTER
                                                                 T/FORO-BELLEVILLE LAKES
                                                                 HURON RIVER
                                                                 11EPALES             2141204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
73/01/30
73/02/22
73/03/30
73/04/30
73/05/31
CP(T)-
73/05/31
73/06/29
73/07/31
73/OB/30
73/09/27
73/10/31
73/11/29
0063U
TIME OEPTri N02fc,N03
OF N- TOTAL
DAY FEET
15
11
15
15
08

16
1?
15
15
14
13
15
00
00
00
00
00

00
DO
00
30
30
00
00
MG/L
*
\j
2
1
0

0

0
0

0
0
0
.2oO
.900
.100
.3B7

.405

.670
. 1 30

.4bO
.300
.300
00625
TOT KJEL
N
MG/L
45.000
39.000
28.000
•+6. 000

36.000

24.000
22.000
22.000
3n.OOO
52.000
37.000
00610 00b71
NH3-N PhOb-DIS
TOTAL ORTriO
MG/L
25.
13.
9.
25.

15.

4.
9.
b.
10.
30.
13.
ooo
200
500
900

700

200
HOO
400
000
COO
000
MG/L P
4.600
3.600
2.600
3.750

4.830

2.900
5.200
3.860
2.52o
5.900
3.150
00665
PHOS-TOF
50051 50053
FLO* CONUUIT
RATE FLOU/-MGU
MG/L P INST MGD MONTHLY
13.000
tt.OOO
8.000
ll.OOU

11.000

8.700
7.<+00
b.920
8.800
16.500
9.000
0.140
0.150
O.loO
0.175

o. 1BO

0.200
0.200
0.160
0.200
0.170
0.200
0.140
0.160
0.200
0.800

0.180

0.200
0.190
0.165
0.200
0.170
0.175

-------
KET-dEVAL UATE 75/02/04
                                                            262952          TF262952     P000500
                                                           <+2  IS* 30.0  Od3 50 30.0
                                                           bCIU-dEelbTER
                                                           26       7.5 ANN ARdOR W.
                                                           1/FOKD-clELLEVlLLE LAKES
                                                           I-IUKON KIVEX
                                                           11EPALES             2141204
                                                           4                   0000 FEET  DEPTH

DATE
FROM
TO
73/01/1^
CP(T>-
73/01/lt>
73/02/20
CP ( T> -
73/02/2U
73/03/26
CP(T)-
73/o3/2b
73/04/27
CP( M-
73/04/27
73/05/26
CP(T>-
73/ub/2o
73/07/30
CP(T>-
73/u7/30
73/08/28
CP(T)-
73/08/26
73/11/12
CP(D-
73/11/12
73/12/26
CPIT1-
73/12/26
74/01/29
CP( H-
74/0 1/29
7«/02/ 1 9
CPU1-
74/u2/19
74/U3/ !•*
CP (T) -


00b3u
TIME OEPTri 'MU2&N03
OK
UAY
08

16
09

16
08

16
08

16
08

16
Od

16
08

16
08

lo
08

ib
Od

16
U8

ItD
08


FEET
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

00
00

N-TOTAL
MI3/L

1.000


0.910


1 . IbO


1.100


2.600


3.000


3. luO


1 . 8 'J u


1 . ioO


1.040


0.7r>0


1 . fauG
00625
TUT KJEL
N
M6/L

13.600


16.800


9.10U


11.500


14.700


10.500


12.200


16.^00


1 3 . 5 U 0


10.000


12.000


7 . o 0 0
                                   Ojblu     00671      00665      50051      S0053
                                  NM3-N    PhOS-tJiS  PriOb-TOT     KLOrt     CONUUIT
                                  TuTAL     OKfHd                 KATE     FLOW-MG0
                                   M(j/L     MG/L P     MG/L  P    INST  MGL)  MONTHLY
                                     1.95U
                                      .600
                    b./OO
                                     1.90C      .3.^00      H.600
                                     0.140      2.16u      3.600
                                     1.980      3.480      4.800
,.05u      1.750      3.200
                              0.071      0.088
0.071     0.070
                                    0.470     2.«00      4.350      0.120
                                        0.094
                                    0.270      3.000      4.700      0.078     0.090
                                     1.680     4.400      5.750      0.070     0.085
                                               2.600      5.225      0.084     0.076
                                     1.410      4.OnO      5.100      0.065     0.071
                                    4.300      2.200      7.200      0.047     0.053
                                                                   0.086     0.079
                                                                   0.084     0.076
                              0.093     0.085
                                                                   O.lt6     0.125
  16 Oo

-------
STORET RETRIEVAL UATt 7S/02/U4
 262952          TF262952
<*a Is* 30.0 083 SO 30.0
bClU-wt«STtni
26      7.5 ANN ARBOR W.
T/FUKU-dELLEVlLLc LAKES
                                                                                                P000500
                                                                  lliLPALtb
                                                                                      0000 FEET  DEPTH
DATE
FROM
TO
74/u^»/04
CP(T)-
74/0^/0'+
TIME DtHfri
OF
DAY FEET
Od 00
Ib 00
00630
N026.N03
N-TOTAL
MG/L
1.2-+0
0062S
TOT KJEL
N
MG/L
^•.600
UubJO
Nnj-N
TOTAL
i-IG/L
0.100
00671
PriOS-OIS
ORTHO
MG/L P
1.300
OObbD
PHOS-TOT
MG/L P
2.<+Oo
bOOSl
FLOrt
KATE
INSF MC30
o.iby
50053
CONDUIT
FLOW-MGU
MONTHLY
u. 150

-------
STO.-fET
OA1E 75/C2/J4

UAft
FROM
TO
73/01/ 11
CP(T)-
73/01/12
73/02/06
CP(T)-
73/02/07
73/03/Od
CP(T)-
73/03/Od
73/J4/12
CP(T)-
73/04/12
73/05/09
CP(T)-
73/05/10
73/06/12
CP(T>-
73/06/12
73/07/10
CtMTl-
73/07/U
73/Ott/U
CP(T)-
73/0^/11
7J/UV/12
CP(T)-
7J/09/13
7J/ lu/Od
CP(T)-
73/ lu/09
73/11/06
CP(T)-
7J/1 1/07
73/12/05
CP(T>-
73/12/06

TIME DEPTH
OF
JAY FEET
00 00

24 00
24 00

24 00
12 00

12 00
12 00

24 00
,12 00

12 00
12 00

24 00
24 00

24 00
2<+ 00

24 00
2t 00

24 00
24 00

2<» 00
24 00

24 00
24 00

24 00
00630
U02NN03
,^-TOTAL
MG/L

0.120


0.040


u .055


0.17U


J.045


0. 1^0


O.Ovu


0.23U


0.01 J


0.120


U . 1 JO


U.29U

00625
TUT KJEL
N
Mb/L

1.1SO


6.600


6 . J u 'J


7.200


3.dOO


6.300


6.SOO


y.^oi)


9. sou


13. 0 JO


10.000


3.30C

                                                  262953          AS262953     P021000
                                                 42 14 00.0 Oe)3 36 00.0
                                                 YPSlLAiNU
                                                 <;6      Y.b YPSILANTI £.
                                                 T/FOKU-BELLLVILLt. LAKES
                                                 FUKO LAKE
                                                 11EPALES             2141204
                                                 4                   0000 FEET  DEPTH
                         •Ju610     00671      Ou665     50051      50053
                        NH3-N    PrlOS-OIS   PHOS-TOT     KLOw    CONDUIT
                        TOTAL     UKTMO                 HATE    FLOW-MGO
                         MO/L     MG/L P     Mt>/L  P   1NST MbD  MONTHLY
                          0.3bO
                           ?.200
                          O.BtO
                          0. 1 i\i
                          <».300
                          3.100      1.400
                           1.600      U.720
                                                                1.600
                                                      1.000     3.600
                                                                          7.660     7.430
b.100     6.600
                          0.720      3.400      J.60U      7.300
                                                                3.750     7.220
                          J.190      l.SOO      1.600      7.050
                          2.bOU      1.200      2.600      7.6BO
                          J.100      2.000      2.300      7.050
                                                                                    7.050
                                                                                    7.000
                    7.090
                                                                                    7.000
                                                      1.680     2.100     7.620     6.940
                     7.blO
                                                                                    6.800
                                                      1.560      2.700     7.550     6.690
                                                         7.620     7.520
                                                      5.5UJ     6.400     6./00     7.450
                                                                                    6.970

-------