Report on Water  Pollution
           in the
        n
g<«

1
        FLINT RIVE
  UNITED STATES DEPARTMENT OF THE INTERIOR
 FEDERAL WATER POLLUTION CONTROL ADMINISTRATION

        GREAT LAKES REGION
          DECEMBER • 13S6

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                   REPORT ON

    WATER POLLUTION IN THE LAKE HURON BASIN
                  FLINT RIVER
                 DECEMBER 1966
        U.S. DEPARTMENT OF THE INTERIOR
Federal Water Pollution Control Administration
              Great Lakes Region
            Detroit Program Office
            U.S.  Naval Air Station
             Grosse lie, Michigan

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                              PREFACE







     This document was assembled by the Detroit Program Office, Federal




Water Pollution Control Administration, with the intention that it be used




together with information from other sources to develop a comprehensive




plan for water pollution control in the tributaries of the Lake Huron




Basin.  The intended purpose of the plan would be to restore the usefulness




of these waters for recreational purposes, provide a more suitable environ-




ment for fish and aquatic life, and enhance the value of this resource.  It




would improve the quality of the area's waters for municipal and industrial




purposes, aesthetic enjoyment, and other beneficial uses.

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                                                                              DETROIT  PROGRAM  OFFICE
                                                                      GREAT LAKES-ILLINOIS RIVER BASIN PROJECT
                                                                        DRAINAGE   BASINS  OF   THE

                                                                               GREAT   LAKES
                                                                              U.S. DEPARTMENT OF THE INTERIOR
                                                                      FEDERAL  WATER POLLUTION  CONTROL ADMINISTRATION
                                                                       GREAT LAKES REGION       GROSSE ILE, MICHIGAN
                                                                                     SCALE IN MIL ES
ONTARIO
                                                                                            QUEBEC
MINNESOTA  I
           (    WISCONSIN  /
                        ILLINOIS
                                                                                     PENNSYLVANIA

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I.  SAOINAW RIVER
2.  CA3S RIVER
3.  FLINT  RIVER
4.  SHIAWASSEE  RIVER
5.  TITTABAWASSEE RIVER
 6,

 7,

 a.
 9,
10.
I I.
MICHIGAN TRIBUTARIES
TO  SA6INAW  BAY
MICHIGAN TRIBUTARIES
TO  LOWER LAKE  HURON
AU  SABLE RIVER
THUNDER BAY  RIVER  •
CHEBOYGAN  RIVER
ST.  MARYS RIVER  AND
MICHIGAN UPPER  PENINSULA
TRIBUTARIES TO  UAKI  HURON
 12. MISSISSAGI RIVER
 13. SPANISH RIVER
 14. WAN AP ITE I  RIVER
 IS. FRENCH RIVER
 16. MAGANATAWAN  RIVER
 17. MUSKOKA  RIVER
 18. SEVERN RIVER
 19. SAUGEEN . RIVER
80. MAITL AND  RIVBR
21. AU SABLE  RIVER
                                                                SCALE  IN  MILES
                                                                                       30
                            DETROIT  PROGRAM  OFFICE
                   GREAT LAKES  ILLINOIS RIVER  BASIN  PROJECT

                          LAKE   HURON   BASIN
                            U.S. DEPARTMENT  OF THE INTERIOR'
                   FEDERAL WATER POLLUTION CONTROL  ADMINISTRATION
                    GREAT LAKES  REGION   '     GROSSE ILE,  MICHIGAN  {

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        LAKE HURON PROGRAM OFFICE
 GREAT LAKES-ILLINOIS RIVER BASIN PROJECT

           DRAINAGE  BASIN

SAGINAW  RIVER  AND  TRIBUTARIES
   PtOCRAL WATER POLLUTION CONTROL ADMINISTRATION

   • RtAT LAKES REGION       «B03SE ILC, VICNIOAN

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                       TABLE OF CONTENTS
INTRODUCTION
GENERAL DESCRIPTION
                                                            Page No.
     Description of Area
     Climate
     Hydrology
WATER USE  	       18

     Municipal Water Supply
     Industrial Water Supply
     Water-related Recreation
SOURCES AND CHARACTERISTICS OF WASTES  	       25

     Municipal
     Industrial
POPULATIONS AND WASTE LOAD PROJECTIONS  	       35
DESCRIPTION OF WATER QUALITY  	       41

     Physical and Chemical
     Microbiological
     Biological
DISSOLVED OXYGEN PROJECTIONS  	       59


SUMMARY AND WATER QUALITY PROBLEMS  	       69

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                         LIST OF TABLES


Table No.                                                    Page No.


     1           Flint River Drought Flows                    10, 11

     2           Flint River Sampling Stations                 12

     3           Municipal Water Supplies                    20, 21

                 Owner and Treatment Code (for Table 3)        22

     4           Industrial Water Use                          23

     5           Municipal Water Use Projections               24

     6           Flint River Municipal Waste                   31

     7           Flint River Industrial Waste Inventory      32, 33

     8           Waste Flow Projections                        37

     9           ,BOD5  Projections                              38

    10           Flint River Water Quality - 1965              47
                 Average Concentrations

    11           Dissolved Oxygen Fluctuation -  Station        48
                 X240

    12           Flint River -  Seasonal Nitrate-N              49
                 Concentration

    13           Flint River -  1965 Total and Soluble          50
                 Phosphate Concentrations

    14           Flint River Water Quality - 1965              51
                 Average Concentrations

    15           Flint River -  Total and Fecal Coliform        52
                 Densities

    16           Flint River -  1965 Total and Fecal             53
                 Coliform Density Statistics

    17           Flint River -  Loadings for Match Run -        62
                 1965  Model

    18           Flint River -  Water Quality                 77-80

                 Notes for Water Quality Tables                 81

                               ii

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                         LIST OF FIGURES

Figure No.                                                  Page No.

     1           Flint River Basin                              4

     2           Time of Passage                               13

     3           Flow Duration Curve - Flint River near        14
                 Flint

     4           Flow Duration Curve - Flint River near        15
                 Fosters

     5           Drainage Area vs River Miles                  16

     6           Location of Sampling Stations                 17

     7           Municipal and Industrial Waste Outfalls       34

     8           Municipal and Industrial Waste Flow           39
                 Projection Area

     9           Population and Municipal Waste Flow           40
                 Projections

    10           Dissolved Oxygen and BOD                      54

    11           Nitrate Concentrations                        55

    12           Total Phosphate                               56

    13.           Total Solids and Chlorides                    57

    14           Total Coliform Densities                      58

    15           Dissolved Oxygen -  Computed Profile           63

    16           Kjeldahl Nitrogen and Ultimate BOD -          64
                 Computed Profile

    17           Computed Dissolved Oxygen Profiles -          65
                 Effect of Temperature and Loadings -
                 1965 Summer Survey Flow

    18           Computed Dissolved Oxygen Profiles -          66
                 Effect of.Temperature and Loadings -
                 7 Day Once-in-Ten Year Flow

    19           Computed Dissolved Oxygen Profiles -          67
                 Effect of.Temperature and Loadings -
                •1 Day Once-in-Ten Year Flow
                               111

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                         LIST OF FIGURES
                            (cont'd)

Figure No.                                                  Page No.
    20           Computed Dissolved Oxygen Profiles -          68
                 Effect of Temperature and Loadings -
                 Augmented Flow
                                IV

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                          INTRODUCTION


                            AUTHORITY

     Comprehensive water pollution control studies were authorized by

the Federal Water Pollution Control Act of 1956, as amended  (33 USC 466

et seq.).
          Sec. 3. (a)  "The Secretary shall, after careful investi-
     gation, and in cooperation with other Federal agencies, with
     State water pollution control agencies and interstate agencies,
     and with the municipalities and industries involved, prepare
     or develop comprehensive programs for eliminating or reducing
     the pollution of interstate waters and tributaries thereof and
     improving the sanitary condition of surface and underground
     waters.  In the development of such comprehensive programs due
     regard shall be given to the improvements which are necessary
     to conserve such waters for public water supplies, propagation
     of fish and aquatic life and wildlife, recreational purposes,
     and agricultural, industrial, and other legitimate uses.  For
     the purpose of this section, the Secretary is authorized to
     make joint investigations with any such agencies of the condition
     of any waters in any State or States, and of the discharges of
     any sewage, industrial wastes, or substance which may adversely
     affect such waters."

          Sec. 5. (f)  "The Secretary shall conduct research and
     technical development work, and make studies, with respect
     to the quality of the waters of the Great Lakes, including
     an analysis of the present and projected future water quality
     of the Great Lakes under varying conditions of waste treat-
     ment and disposal, an evaluation of the water quality needs
     of those to be served by such waters, an evaluation of muni-
     cipal, industrial, and vessel waste treatment and disposal
     practices with respect to such waters, and a study of alternate
     means of solving water pollution problems (including additional
     waste treatment measures) with respect to such waters."
Initiation of the Great Lakes-Illinois River Comprehensive Program

Activity followed an appropriation of funds by the 86th Congress late in

1960.  In accordance with the provisions of the Act, the Secretary of

Health, Education, and Welfare delegated the responsibility for the study

to the Division of Water Supply and Pollution Control of the Public

Health Service.  Passage of the "Water Quality Act of 1965" gave the
                                 1

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responsibility for these studies to the Federal Water Pollution Control




Administration (FWPCA).   As a result of Reorganization Plan No. 2 of 1966,




the FWPCA was transferred from the Department of Health, Education, and




Welfare to the Department of the Interior effective May 10, 1966.







                             PURPOSE




     This report presents the water quality of the Flint River, Michigan




as it exists today, and includes predictions of population, water use,




and waste load trends for future years.  Its purpose is to present informa-




tion that can be used as a basis for developing a basin wide water




pollution control program.




     The objectives of the FWPCA are to enhance the quality and value of




the Nation's water resources, and to prevent, control, and abate water




pollution through cooperative local, State, and Federal pollution control




plans.






                              SCOPE




     The area covered by this report is the Flint River, Michigan.  The




study of the Flint River was conducted by FWPCA on the 60 miles between




the City of Flint and the confluence of the Flint and Shiawassee Rivers.




These two rivers, together with the Tittabawassee and Cass;Rivers, form




the Saginaw River which flows 22 miles to Saginaw Bay.  Similar reports




are being prepared for each of these rivers.







                          ORGANIZATION




     The Detroit Program Office, located at the Naval Air Station, Grosse




lie, Michigan, began collecting water quality data on the Flint River




in 1965.  Its staff include specialists in several professional skills,

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including sanitary engineers,  hydrologists,  chemists,  biologists,  and

bacteriologists.   The resources of the Robert A.  Taft  Sanitary Engineering

Center at Cincinnati, Ohio have been utilized, and assistance and  guidance

have been obtained from the Great Lakes-Illinois River Basins Project,

Chicago.


                         ACKNOWLEDGMENTS

     The Detroit Program Office has received the cooperation and assis-

tance of local, State, and Federal agencies, as well as interested

individuals.  The principal agencies taking an active  part in providing

assistance in the preparation of the report are as follows:
     State Agencies
     Federal Agencies
                          Michigan Water Resources Commission
                          Michigan Department of Public Health
                          U.S. Department of Commerce
                            Weather Bureau
                            Office of Business Economics
                            Bureau of Census

                          U.S. Department of the Interior
                            Bureau of Commercial Fisheries
                            Bureau of Sports Fisheries and Wildlife
                            Bureau of Outdoor Recreation
                            Geological Survey

                          U.S. Department of Defense
                            Detroit District., Corps of Engineers
                            Lake Survey, Corps of Engineers

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                       GENERAL DESCRIPTION







Description of Area




     The Flint River Basin occupies most of Genessee and Lapeer Counties




and portions of Shiawassee, Saginaw, Tuscola, and Oakland Counties.  The




Flint River is one of the four main tributaries of the Saginaw River




drainage system which drains an area of 6,260 square miles.  The Flint




River drains an area of approximately 1,454 square miles.




     The basin is irregular in shape, with the greatest length approxi-




mately 55 miles, and the greatest width approximately 35 miles, narrowing




to about 5 miles near the mouth.  It is bounded on the north by the




Cass River Basin; on the east by the Black, Belle, and Pine Basins; on




the south by the Clinton and Shiawassee Basins; and on the west by the




Shiawassee River Basin.  Major tributaries include the North Branch and




the South Branch along with Kearsley Creek, Thread River, and Misteguay




Creek.




     The North and South Branches of the Flint River originate in Lapeer




County and join to form the main stem.  The river then flows generally




southwesterly about 35 miles to the City of Flint, at which point it




flows northwesterly to the Saginaw River.  The last five miles flow




through a cutoff canal.




     The portion of the basin upstream from the City of Flint consists




of rolling morainic features interspersed with ancient lake beds.




Numerous small lakes in this area drain into the Flint River system.




Downstream from Flint the river flows through the bed of glacial Lake




Saginaw, which extends to Saginaw Bay.

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     Flint, the Largest city in the basin, and third largest in Michigan,




is a large automobile manufacturing center.  Lapeer, the second largest




city in the Flint River Basin is an agricultural and dairy center, and




home of light industry.






Climate
     The climate of the Flint River Basin conforms to the general weather




pattern that exists in the entire lower Great Lakes area.  There are wide




seasonal variations in temperature, many storms, and the yearly precipi-




tation distribution remains fairly constant.  In the winter this




precipitation Is.usually in the form of snow.  The air masses moving




toward Michigan are heated in the winter and cooled in the summer by the




waters of the Great Lakes, which nearly surround the State.  This results




in a more moderate climate than is experienced to the west and southwest




of Michigan.




     The mean yearly temperature is about 45 F, while the mean summer




and winter temperatures are about 68 F and 23 F, respectively.  There




is an average yearly precipitation of 30 inches on the basin, of which 60




percent can be expected to fall during the six month period of May through




October.







Hydrology




     Above Columbiaville, the slope of the stream averages about six feet




per mile, and below that point, about two feet per mile as far as Flint.




From Flint to Flushing, the slope is about four feet per mile.  Across




the Shiawassee Flats, the slope of the Flint River is less than one foot




per mile.  The tributaries to the Flint River follow the samei:.pattern.

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In the upper reaches, the slopes of the tributaries are steep and flatten




out as they approach the main stream.






             Location of U.S. Geological Survey Gages




     There are seven U.S. Geological Survey gaging stations in the Flint




River Basin.  Of these seven, one records the contents of Holloway Dam,




and another, the stages in the Shiawassee Flats area.  Three of the




remaining five gaging stations were utilized by the FWPCA in this report.




     The first of these is Flint River near Otisville.  It has a drainage




area of 547 square miles, and is located 20 feet downstream from the State




Highway 15 bridge (1-1/2 miles downstream from the Holloway Reservoir).




It has been in operation from October 1952 to the present.




     The second U.S. Geological Survey gaging station is Flint River near




Flint.  It is located on the grounds of the Flint sewage treatment plant,




two miles downstream from Flint.  It has been in continuous operation




since August 1932, and has a drainage area of 927 square miles.




     The third U.S.  Geological Survey gaging station is Flint River near




Fosters.  It is located on the downstream side of the bridge of Sheridan




Road, one mile west of Fosters.  The drainage area for this gage is




approximately 1,120 square miles, and it has been in service since




October 1939.




     The range of observed discharges of these gaging stations are as




follows:

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     Flint River near Otisville  -  Maximum  -  6,150 cfs
                                    Average  -    255 cfs
                                    Minimum  -    4,3 cfs

     Flint River near Flint      -  Maximum  - 14,900 cfs
                                    Average  -    536 cfs
                                    Minimum  -    9.0 cfs

     Flint River near Fosters    T  Maximum  - 19,000 cfs
                                    Average  -    ;684 cfs
                                    Minimum  -     27 cfs
                         Time of Passage

     It is necessary to know the stream travel time of a river in order

to determine its waste decay rate.  On the Flint River these times of

passage have been determined for various flows at the station Flint

River near Flint, and are for the stretch of river between mile points 46.1

and 9.7.

     Time of passage.studies on the Flint River were made by the Detroit

Program Office during 1965 and 1966.  These studies used multiple

releases of Rhodamine B dye and measured the time of occurrence and

concentration of the dye at downstream points.  In the reach between

Flint and Flushing, times of passage were also determined by use of a

computer program utilizing cross-sectional measurements made by Michigan

Water Resources Commission personnel.  The stretch of river between mile

points 46.1 and 9.7 coincides with the intensive sampling areas below

Flint.


                          Drought Flow

     The one-day and seven-day low flows (once in 10 years) have been

calculated for the Flint River at two of the U.S. Geological Survey

stations by use of Gumbel Extremal Probability Paper.  The stations used

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were Flint River near Flint, and Flint River near Fosters.  The flow at




the remaining points along the river was arrived at by comparison of




their drainage areas with that of the U.S. Geological Survey stations.




     Because the Flint gage has a longer period of record than the




Fosters gage, only those flows occurring in the period 1940-1963 were




used in this analysis.  This results in a slightly higher flow at Flint




than would have been expected had the entire period of recrod been used.




     This analysis does not take into account the effect of the operation




of Holloway Dam on the Flint River drought flows.  This dam should tend




to raise the flow in the river during periods of extended drought.  The




Michigan Water Resources Commission stated in their "1956 Report on Water




Resource Conditions and Uses in the Flint River Basin" that the reservoir




would sustain a flow of 100 cfs in the river during drought years.  Use




of that figure would add roughly 50 cfs to the flow at each of the




remaining points on the river below the dam.




     Also, no consideration was made for the reduction in flow between




the intake for the Flint water treatment plant and the Flint sewage




treatment plant.

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              TABLE  1.  FLINT RIVER DROUGHT FLOWS
(See Figure 6)
Location
X290
X288
X286
X284
X282
X280
X270
X26C
Kears'iey Crec;O'>"
Kearsley Creek
X253
Swart 2 Creek'-'-"
Swsrtz Creek
X256
X254
X250
X246
X242
X240
Brent Run'"
Brent Run
X236
Drainage Area
( square mi 1 es)
453.0
46£."
494.8
543.5
547.0
553.7
593.9
605.3
603.3
721. if
737.**
737.9
915.4
925.7 .
939.5
949.1
960.6
967.7
981.8
983.3 '
1035.1
1045.5
1 -Day F 1 ow
(cfs)
18.6
19.1
20.3
22.3
22. k
22.7
2^.6
24.3
24.9
29.6
30.2
":0 . 3
37 . 5
33.0
3 -"' « ^
38.9
39.4
39.7
40 . 2
40.3
41.9
42.3
7-Day Flow
(cfs)
23.0
23.7
25.1
27.6
27.8
28.1
30.4
30.7
30.9
36.6
37.4
37.5
46.5
47.0
47.5
47.9
48.4
48.7 •
49.2
49.3
5C.9
51.3
'"Up to, but not including named stream.
                             10

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           TABLE 1 .   FLINT RIVER DROUGHT FLOWS (cont.)
Ir\f* & 1" 1 O n
Pine Run Creek*
Pine Run Creek
X234
X232
X230
X220
Drainage Area
( square mi les)
1046.6
1102.5
1106.0
1116.7
1118.9 .
1i7?>.2
1 -Day Flow
(cfs)
42. k
44.1
kk.2
kk.l
45.0
^7.1
7-Day Flow
(cfs)
51.4
53.1.
53.2
53,7
54.0
56.9
•>>'Up to, but not including named stream.
                               11

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             TABLE 2.  FLINT RIVER SAMPLING STATIONS
Mainstream Stations
Station
X220
X230
X236
X237
X240
X246
X248
X250
X255
X256
X260
Tributary
Station
Mile Point
9,7
14.7
22.1
28.5
28.5
33.9
39.0
39.6
45.6
46.1
55.9
Stations
Mile Point
 X239

 X295


 X296
 0.2

 1.6


25.5
                           Location

                           Bridge on Tom Creswell Rd., 2 mi. W of M-13

                           Bridge on Sheridan Rd., 1 mi. W. of Fosters
                           (USGS* Gage)

                           Bridge on E. Burt Rd. in Morseville

                           Montrose outfall, 50' N. of M-57 bridge
                           near Montrose

                           Bridge on M-57 near Montrose

                           End of Mt. Morris Rd., 3 mi. N. of Flushing

                           Flushing sewage treatment plant

                           Bridge on W. Main St. in Flushing

                           Flint sewage treatment plant (USGS Gage)

                           Bridge on Mill Rd.s 1 mi. W. of Flint

                           Bridge on Carpenter Rd. in Flint
                                        Confluence
                         On Tributary   Mile Point
Brent Run
27.6
Farmers Creek-  76.6/14.4
South Branch
Swartz Creek
50.5
Location

Bridge on McKinley

Lapeer State Hospi-
tal (USGS Gage)

Bridge on Elliott Rd.
1-1/2 mi. N. of Holly
(USGS 'Gage)
* U.S. Geological Survey
                                12

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        TIME OF  PASSAGE OF  THE

                 FLINT   RIVER
             FLOW  AT FLINT GAGE
                                                   i- IGURE 2
                       \
                         V
                           \
          \


                                                         o
                                                         CJ
                                                         o
                                                         ro
                                                         tf>
                                                         rr>
                                 \
                                  •AT
                                                           CO
                                                           u
                                                           o:
                                                           UJ
                                                           >

                                                           CL
                        \
                                       \
                                s     \

                                      V
                                           \

                                               \
                                            X   \
                                             \  \
                                       \
                                      .  \
                                       *\\1

                                                  v
at
t*-     (O     if>      *r     to

(SAVQ)  39VSSVd  JO  3WI1
                                           CM

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                                                                     ,- IG U R E 3
                         FLOW   DURATION   CURVE
                        FLINT  RIVER   NEAR  FLINT
                                      1933- 1964
     10,000
     1,000
u>
H-
u
O
O
UJ
tr
uj
a.

i-
LJ
UJ
U.

O
CD
ZJ
O
UJ
O
EC1
o
OT
100
       10
       1.0
                              \
                                 V
        0.01 0.06 O.I 0.2 0.8
                         2   8   IO   20  30  40 BO 60 70 60   9O   95  98 88


                          TIME  IN  PERCENT  OF TOTAL PERIOD
                                                                 »8.8 98.9 89.89

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                                                                            r IGURE 4
                            FLOW   DURATION   CURVE
                        FLINT  RIVER   NEAR   FOSTERS
                                          1940 -1964
    100,000
     10,000
o
o
LU
tO

cc
Ul
Q.
LU
O
m
r>
o
LU
O
x
o
co
      1,000
       100
        10
            \
\
               \
         0.01 O.OB O.I 0.2 O.B  12   8   10   20  30 40 6O 60 70  80   9O   98   96 99


                            TIME  IN  PERCENT  OF  TOTAL  PERIOD
                                                 99.8 99.9 9S..99

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                                                         • fciURE J>
        DRAINAGE  AREA  VS.  RIVER MILES

                      FLINT  RIVER
                                                              o
                                                              CM
        M

     3Nld
                                                              If)
                                                              CM
                                                         CO

                                                         UJ

                                                         _l
                                                                 

                                                                 o:
      Nfld
         1N3UQ
                                                              O
                                                              ro
                                                              ro
                                                              O
                                                              in
            X33dO
                         X33HO
                                                              in
                                                              m
o
o
CM
o
o
o
o
o
o
o
o
o
00
o
o
f-
o
o
o
o
in
                        *os)  vaav

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GE_N_E_SEEJCO._	_____,
 IVINGTON CO.    FENTON   !
                                                                                                                         |	*. gANILAC^ CO.
                                                                                                                            "V LAPEER CO.
                                                                                                                                         LEGEND

                                                                                                                                            A   US<
        LAKE HURON PROORAH OFFICE



LOCATION  OF  SAMPLING  STATIONS


          FLINT RIVER BASIN

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                           WATER USE







Municipal Water Supply




    The Flint River Basin has a population served by public water




supplies of approximately 280,000 people.  This number is expected to




increase to 620,000 by 1990, and 1,300,000 by 2020.  The City of Flint




is the largest user, serving about 235,000 people and numerous industries.




Flint obtains its water from the Flint River at the present time, but




since this source of supply is limited, Flint is planning to tie in with




the City of Detroit water line from Lake Huron.  Holloway reservoir




controls the flow of the Flint River for water supply, and the reach




between the dam and the city serves as an aqueduct.  All other public




water supplies in the basin come from local wells.




    Table 3 lists the individual water users and gives the source of




the supply.  Projected use for the basin in 1990 and 2020 is shown on




Table 5.







Industrial Water Supply




    Most of the industries in the Flint River Basin obtain their water




from municipal supplies.   The only exception is the Vogt Packing




Company in Grand Blanc which has its own well system for its 0.06




million gallons per day (MGD) use.




    Table 4 lists the industrial users and the use.  Projections of 1990




and 2020 use are included in the municipal water in Table 5.







Water-related Recreation




    The Flint River Basin in 1965 had approximately 22,000 boats




registered by its residents.






                              18

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    The Flint River is generally too small for boat traffic, but there




are several reservoirs on the river that are suitable for boating.  The




basin has over forty lakes with sizes varying from several acres to




over 400 acres.  These lakes offer fishing, boating, swimming, and most




of them are fully developed for summer and year round residence.




Commercial boat liveries are located on a number of these lakes.
                               19

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               TABLE 3.  MUNICIPAL WATER SUPPLIES*
                        Flint River Basin
                  1960
Town              Pop.

New Lothrop           510


Fenton Twp.           280

Burton Twp.        29,700



Clio                2,212



Davison             3,761


Flint             196,940

Flint Twp.            300
(Genesee Cty.
 Drain Commission)

Flushing            3,761

Beecher Metro-
politan District


Grand Blanc         1,565


Grand Blanc Twp.      640
Southhampton Sub-     120
division
      Owner**  Sour c e

        M
                         Treatment**
Wildwood Sub-
division
320
Wells in drift 62' to
69' deep
        T      Wells in rock 73'  deep

        T      Wells in rock 257' deep,
               wells in drift 168' to
               196'  deep

        M      Wells in rock 145' to
               317'  deep; well in
               drift 141' deep

        M      Wells in rock 210' to
               260'  deep

        M      Flint River

        C      Water from City of
               Flint and wells in rock
               160'  to 167'  deep

        M      Water from City of Flint

        D      Wells in rock 350' to
               431'  deep; wells in
               drift 98' to  124'  deep

        M      Wells in rock 287' to
               306'  deep

        T      Wells in rock 267' to
               300'  deep

        P      Wells 200' deep
Wells in rock 230' deep
                           2, 6
 *Taken from "Data on Public Water Supplies in Michigan," Engineering
  Bulletin No. 4 by the Michigan Department of Public Health.

**See Owner and Treatment Code page 22

                                 20

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               TABLE 3.   MUNICIPAL WATER SUPPLIES* (cont'd)
                        Flint River Basin
Town

Montrose


Mt. Morris


Otisville

Clifford

Columbiaville


Lapeer

Lapeer Home
Training School

North Branch
1960
Pop.
  1,466


  3,484


    701

    330

    789


  8,020
    832
Owner**  Source

  M      Wells in drift 67'  to
         77'  deep

  M      Wells in drift 60'  to
         82'  deep

  M      Well: in rock 415'  deep

  M      Well- in rock 400'  deep

  M      Wells in rock 280'  to
         300' deep

  M      Wells in rock 200'  deep

  S      Wells in rock
  M      Wells in rock 250'  & 276'
         deep
Treatment**
  3, 4
 *Taken from "Data on Public Water Supplies in Michigan," Engineering
  Bulletin No,  4 by the Michigan Department of Public Health,

**See Owner and Treatment Code page 22
                               21

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                    OWNER AND TREATMENT CODE
Owner Code:

     M = City or Village

     T = Township

     P = Private

     D = District

     C = County

     S = State

  U.S. = Federal



Treatment Code:
     1.  Std. Filtration*

     2.  Lime softening**

     3.  Zeolite softening

     4.  Iron removal

     5.  Chlorination

     6.  Fluoridation
 * Implies at least chlorination, chemical coagulation, and rapid
   sand filtration.

** Lime softening includes filtration.
                               22

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                  TABLE  U.   INDUSTRIAL WATER USE
                             Flint River Basin
Name of User
 Quantity
Used (MGO)
                                        Source
Use
GMC-AC Spark Plug         1.5

GMC-Buick Division        2.2

GMC-Chev. Flint Div.       2.0

GMC-Fisher Body Div.       0.08

GMC-Ternstedt             1.5

GMC-Parts Division        0.36

CMC-Chevrolet Assembly     1.4

GMC-Chev. Engine
   & Stamping Plant        0.72

Vogt Packing Co.          0.06
                                     City of Flint

                                     City of Flint

                                     City of Fl int

                                     City of Flint

                                     City of Flint

                                     City of Flint

                                     City of Flint


                                     City of Flint

                                     Private wel1s
                                  Process  & Cooling

                                  Process  & Cooling

                                  General  Mfg.

                                  General  Mfg.

                                  Process

                                  Process

                                  Process


                                  Process

                                  Process
                               23

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TABLE  5.  MUNICIPAL WATER USE PROJECTIONS (MGD)
                    Flint River Basin
                         1965          1990          2020

Municipal*                 40            96           220



Vflnc1udes industrial  water use.

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              SOURCES AND CHARACTERISTICS OF WASTES







Municipal




     The Flint River Basin population served by municipal waste treatment




systems is approximately 210,000 people, of which all but about 5,000 are




in Genesee County.




     The county has a metropolitan sewerage plan which will serve the City




of Flint's suburbs with sewer connections and treat the waste at the




Flint sewage treatment plant.  This sytem should be operable by 1.967 and




serve the communities of Montrose, Linden, Swartz Creek, Birch Run, Clio,




Grand Blanc, and Davidson.  Swartz Creek, Clio, and Davidson have sewage




treatment plants now that will be abandoned when the metro system is




completed.  The others have no facilities.




     The Village of Columbiaville in Lapeer County has a small separate




sewer system but has no treatment facilities.  The Michigan Water




Resources Commission has requested that they provide treatment, and the




village is studying the problem.




     North Branch has a sewage collection system with treatment in




municipally owned and operated septic tanks.  Upgrading of the system is




scheduled for 1967.




     The following information is based on 1965 monthly average figures




reported to the Michigan Department of Public Health by the individual




plants.  Prior to January 1967, minimum chlorination period required




by the Michigan Department of Public Health was from May 15 to




September 15.  After January 1967, all. municipal plants are required to




disinfect their effluents continuously.




     Plant outfall locations are shown in Figure 7, and a summary of







                                25

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results listed in Table 6.







             Davidson Sewage Treatment Plant - 1965




     This plant is a trickling filter unit wnich serves about 3,000 people.




The flow averaged 0.40 million gallons per day (MGD) during 1965, with




variations between 0,29 and 0.69 MGD.  The 5-day biochemical oxygen




demand (BOD ) removal by this plant was about 70 percent, which left an




average effluent BOD  of 62 milligrams per liter (mg/1).   The effluent




was chlorinated from May 15 to September 15 as required by the Michigan




Department of Public Health.







               Flint Sewage Treatment Plant - 1965




     This plant is the largest in the Flint Basin and serves a population




of approximately 200,000 people.  Part of the average flow of 26.5 MGD




is treated by a trickling filter unit and the rest by a new activated




sludge unit.   The plant, which usually operates with a BOD  removal




efficiency in excess of 90 percent, has an average effluent BOD,, value




of 14 mg/1.  The BOD  during 1965 varied from 5 to 21 mg/1.  The effluent




was chlorinated from May 15 through September 15.




     During the Federal Water Pollution Control Administration survey of




the Flint River on August 11, 1965, the BOD  of the effluent was in the 5




mg/1 range.  The plant used about 1,100 pounds of chlorine on this date,




which is about average.






             Flushing Sewage Treatment Plant - 1965




     The Flushing sewage treatment plant is a small trickling filter unit




which serves about 2,500 people.  The average flow is 0.48 MGD, with




variations in 1965 between 0.35 and 0.67 MGD.  BOD  during the same






                                26

-------
period varied from 26 to 45 mg/1, with an average of 33 nig/1,,  The

effluent was chlorinated from May 15 through September 15.

     The plant operation during the Federal Water Pollution Control Admin-

istration Flint River survey of August 11, 1966 was normal for August.


              Lapeer Sewage Treatment Plant - 1965

     This trickling filter plant serves about 6,000 people.  The average

flow and BOD  for 1965 were 0.73 MGD and 22 mg/1, respectively.  The

plant removes about 90 percent of the BOD  from the influent.  Flow

fluctuated during 1965 between 0.57 and 0.87 MGD, and BOD  varied between 11

and 40 mg/1.   The effluent was chlorinated from May 15 through September 1.5.


              Lapeer State Home and Training School
                  Sewage Treatment Plant - 1965

     This trickling filter plant serves the residents of the State School.

Average flow for 1965 was 0.37 MGD with very little variation.  The average

effluent BOD  for the year was 21 mg/1, with variations between 14 and 39

mg/1.  The plant chlorinates its effluent continuously throughout the year.


           Swartz Creek Sewage Treatment Plant - 1965

     This activated sludge plant serves a population of about 3,000.  The

flow for 1965 averaged 0.31 MGD with variations between. 0.20 to 0.48 MGD.

Effluent BOD  values ranged between 11 and 25 mg/1, with an average of 18

mg/1.  The plant effluent was chlorinated from May 15 to September 15.


Industrial -  1966
     Industries in the Flint River Basin are mainly located in and around

the City of Flint; the rest of the basin is primarily rural farming land.

The industries include eight General Motors plants, and one small rendering


                               27

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plant.  Generally, water is purchased from the Flint municipal system.


Most of these, plants discharge their process waste to the Flint River


after treatment.  The eight General Motors plants have been rated as


"providing adequate control" by the Michigan Water Resources Commission,,


The Vogt Packing Company, which operated a small rendering plant, has been


rated as "providing control - but adequacy not established."  'This plant


has been asked to improve treatment by the Michigan Water Resources


Commission, and municipal sewers should be available within a year.


     Outfall locations for the above plants are shown on Figure 7, and


results of sampling are shown in Table 7.   All of this information was


obtained from the Michigan Water Resources Commission in April 1966.



                    General Motors Corporation (CMC)
                     AC Spark Plug Division


     This plant is located on Dort Highway in the City of Flint.  The


plant, which produces spark plugs, has a waste flow of approximately 1.5


million gallons per day (MGD).  This flow is discharged to Gilkey Creek,


a tributary of the Flint River.   Waste constituents include cyanide,


hexavalent chromium, nickel, oil, and suspended solids„  Treatment facili-


ties consist of settling, and chrome and cyanide separation.



                       CMC - Buick Division


     The Buick Plant, located on Industrial Avenue in Flint, discharges


approximately 2.2 MGD of general manufacturing and plating wastes to the


Flint River.   Treatment facilities are settling and a Utah skimmer.



                  CMC - Chevrolet Flint Division


     Located on Chevrolet Avenue in Flint, this plant discharges about 2
                                28

-------
MGD directly to the Flint River.   Waste constituents include suspended




solids and oil.  Treatment facilities consist of settling tanks and oil




removal equipment.







                   CMC - Fisher Body Division




     The plant is located in Grand Blanc and discharges its flow of 0=08




MGD to Thread Creek, which is a tributary to Swartz Creek which in turn




empties into the Flint River,,  Wastes include oil and suspended solids „




Treatment is by a secondary unit  and a lagoon.






                    CMC - Ternstedt Division'




     This plant, located on Coldwater Road in Flint, discharges its waste




flow of 1.5 MGD to Brent Run, a tributary of the Flint River.  A. secondary




unit and lagoons treat the wastes which contain oil., suspended solids,




cyanide, hexavalent chromium, and copper.







                      CMC - Parts Division




     Located in the town of Swartz Creek, the plant discharges 0,4 MGD




of treated wastes to Swartz Creek, a tributary of the Flint River.  Waste




constituents include oil and suspended solids,  and are treated by settling




tanks, oil removal equipment, and lagoons.







                 CMC - Chevrolet  Assembly Plant




     This plant is located on Van Slyke Road in Flint and discharges its




flow of 1.4 MGD to Swartz Creek,  a tributary of the Flint River.  Waste




constituents include oil, and suspended solids.  The waste flow is




treated by settling tanks and oil removal equipment.
                               29

-------
             CMC - Chevrolet Engine and Stamping Plant



     This plant is located on Van Slyke Road in Flint and discharges its



flow of 0.72 MGD to Garment Creek,  a tributary of Swartz Creek, which



drains into the Flint River.  Wastes include oil and suspended solids,
                    j
                    i

which are treated by settling tanks and oil removal equipment.





                       Vogt Packing Company



     This plant is located in Grand Blanc and discharges a flow of 0.06



MGD to Thread Creek, a tributary of Swartz Creek which drains into the



Flint River.  This rendering plant's waste constituents include BOD,



suspended solids, and suspended volatile solids.  Treatment consists of



settling.
                                30

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                  TABLE   6.  FLINT RIVER MUNICIPAL WASTE

         (Yearly average  for 1965 in mg/1,  unless otherwise noted)
                      All plants are secondary units.
Plant Name
Davidson
Flint
Flushing
Lapeer
Lapeer State
Home
Swartz Creek
Flow
(MGD)
0.40
26.5
0.48
0.73
0.37
0.31
Temp . F
(Raw)
60
61
50
59
70
52
5-Day
BOD
62
14
33
22
21
18
Susp.
Sol ids
57
30
30
32
16
31
Susp.
Vol.
Solids
53
19
20
22
13
27
PH
7.7
7.4
-
7.6
8.4
_
1 1 2
Appl ied
#/day
37
1280
39
2k
26
11
Avg.
ci2
Res.
1.5
-
0.9
.-
1 .0
1.0
''•-During chlorination period,  from May 15 through September 15, except for
 Lapeer State Home which chlorinates continuously all  year.
                                  31

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                                TABLE  ?.  FLINT RIVER INDUSTRIAL WASTE INVENTORY
Industry
GMC-AC Spark Plug Div.
GMC-Buick Div.
GMC-Chev. Flint Div.
GMC-Fisher Body Div.
GMC-Ternstedt Div.
GMC-Parts Div.
GMC-Chev. Assembly
Location
Dort Hwy
Flint
Industrial
Ave.-FI int
Chevrolet
Ave.-FI int
Grand Blanc
Coldwater
Rd. -Flint
M-78
Swartz Cr.
Van Slyke
Flint
Receiving
Stream
Gi Ikey Creek
Flint River
Flint River
Flint River
Thread Creek
Swartz Creek
Flint River
Brent Run
Flint River
Swartz Creek
Flint River
Swartz Creek
Flint R i ve r
Waste
Constituents
CN,Cr6,Ni,Oi1,
Susp. Sol .
Gen. Mfg. &
Plating Waste
Susp. Sol .,0i 1 ,
Gen. Mfg.
Oil, SS, Gen.
Mfg. Wastes
Oil, SS, CN,
Cr6, Cu
Oil, Susp. Sol.
Oil, Susp. Sol.
\
Waste Flow Treatment
(MGD) Provided
Cr6 & CN
1.5 separation
; Settling
2.2 Settling
Utah Skimmer
2.0 Oil Removal -
Settl ing
'-•t . ..
0.08 Lagoon &
Secondary
1.5 Secondary
& Lagoons
Q.k Settling,
Oi 1 removal ,
Lagoons
1.1+ Settling,
Oil removal
MWRC
Rating
Apri 1
1966*
A
A
A
A
A
A
A
* A - Adequate control.

-------
                                  TABLE 7.  FLINT RIVER INDUSTRIAL WASTE INVENTORY
                                                       (CONT.)
Industry
GMC-Chev. Engine &
Stamping Plant
Vogt Packing Co.
MWRC
Rating
Receiving Waste Waste Flow Treatment April
Location Stream Constituents (MGD) Provided 1966*
Van Slyke Carmen Creek Oil, Susp. Sol. 0.72
Flint Swartz Creek
F1 int River
Grand Blanc Thread Creek BOD, Susp. Sol., 0.06
Swartz Creek Susp.Vol .Sol .
Flint River
Settling, A
Oi 1 reir.ova1 ,
Lagoons
Settling B
LO
to
  •if
    A  - Adequate  Control.
    B  - Control  provided  - adequacy not established (additional treatment requested).

-------
                     )   '. SANILAC. CO.
                        ~\ LAPEER CO.
LAPEEfl CO.  *	
OAKLAND CO. .
                                       LAKE HURON PROGRAM OFFICE  '



                            MUNICIPAL 8 INDUSTRIAL WASTE OUTFALLS


                                         FLINT  RIVER  BASIN



                                 riOIRAL »»'«• POLLUTION CONtMOL *OHtBI>TH*TIO*

-------
              POPULATION AND WASTE"LOAD PROJECTIONS



     Demographic studies were conducted by the Great Lakes-Illinois River

Basins Project, Chicago, for the Lake Huron Basin,,  Population trends on

a national, regional, and county basis were analyzed, and population

projections were developed for the various areas of the Lake Huron Basin.

In 1960, approximately 1.2 million persons lived in the Lake Huron Water-

shed - about double the 1920 population.  By the year 2020 it is estimated

that the population of the watershed will be approximately 3«2 million.

     The one major city on the Flint River is Flint (196,940) according

to the 1960 census figures.  For this report, the Flint area and surrounding

communities were analyzed as a unit, assuming that by 2020 the entire area

will be urbanized and served by water and sewer systems.  For this area,

the 1965 population served by sewerage systems was estimated to be 210,000,

and projected to be 620,000 by 1990, and 1,300,000 by the year 2020.
                           (
     Table 8 shows the estimated waste flow in MGD for the Flint Basin.

     BODS projections were based on present day inventory information

obtained from the Michigan Water Resources Commission, the Michigan Depart-

ment of Public Health, and the U.S. Public Health Service.  Municipal and

industrial water use growth rates and BOD  production in terms of popu-

lation equivalents were determined from studies on the Lake Michigan Basin

and applied to the inventory data obtained for the Flint area.

     The results of these projections are shown on Table 9.  For example,

in 1965, a total of 42,930 pounds per day of BOD  was produced in the

area of which 90 percent was removed, leaving 4,300 pounds of BOD  being

discharged to the river.  By the year 2020, with the same percentage of
                                35

-------
treatment, 27,850 pounds would reach the river.   In order to show an




improvement over present water quality,  99 percent or more removal will




be necessary at that time.
                                36

-------
                TABLE 8.   WASTE FLOW PROJECTIONS



                                    1965          1990          2020

Municipal (MGD)

   Residential                      18.8            75           182

   Industrial                        8.7            20            44

       Total                        27.5            95     .      226
Industrial                           9.5            22            48
(direct to river)
       Total to River               37.0           117           274
                                37

-------
                     TABLE   9
      PROJECTIONS
Municipal

   Residential
   Industrial
   Total  Municipal
     Present 92% removal
     With 90% removal
     With 95% removal
     With 99% removal
                                 1965
                                 #/dav
35,600
 6,020
41,620
 3,380
 4,162
 2,080
   416
                    1990
                    #/day
111,500
 13,600
125,100
 10,000
 12,510
  6,255
  1,251
                     2020
                     #/dav
260,000
 30,500
290,500
 23,200
 29,050
 14,525
  2,905
Industri al
  (direct to river)
  Present 30% removal
  With 90% removal
  With 95% removal
  With 99% removal
 1,310

   917
   131
    65
    13
  2,960

  2,070
    296
    148
     30
  6,640

  4,650
    664
    332
     66
Total  load before  treatment      42,930
  Present 90% removal             4,297
  With 90% removal                4,293
  With 95% removal                2,146
  With 99% removal                  829
                  128,060
                   12,070
                   12,806
                    6,403
                    1,281
                  297,140
                   27,850
                   29,714
                   14,857
                    2,971
                                 38

-------
I	". SAHILAC CO.
  ~\ LAPEER CO.
    POPULATION a  MUNICIPAL WASTE  FLOW
             FLINT  RIVER  BASIN
              PROJECTION  AREAS

-------
                 POPULATION  AND  MUNICIPAL
           WASTE  FLOW  PROJECTIONS  FOR THE
                       FLINT  RIVER  BASIN
 10,000,000,
cc
01
CO
  1,000,000
0.
o
a.

100,000 I I I I I I I i I I I I I I I i i i
                      X
                            X
                                 1 1 1 1 1 1 1 1 1
                                         I 1 1 1 1 1 1 1
                                                                 100
                                                                 >
                                                                 <
                                                                 o

                                                                 tr
                                                                 LU
                                                                 a.

                                                                 CO
                                                                 2
                                                                 O
                                                                    <
                                                                    O
    1.960      1970      1980      1990     2000

                              YEARS
                                              2010
                                                       2020
                                                                 10
                                                               2030

-------
                  DESCRIPTION OF WATER QUALITY







     The Detroit Program Office conducted surveys of the Flint River




during 1965 to determine the quality of this watercourse.  Figure 6 shows




the general locations of sampling stations X260 and X240, sampled




approximately twice a month, and several municipal sewage treatment plant




sampling stations.  The remaining stations shown on Figure 6 were OXSAG




stations which were sampled approximately once every 4 hours over a 24-hour




period on the August 11-12, 1965 survey.






Chemical
     The following water quality measurements were made during 1965 with




respect to chemical criteria:  dissolved oxygen, BOD,., nitrogen (ammonia,




organic, and nitrate), phosphates (total and total soluble), solids




(total, suspended, and volatile suspended), chlorides, iron, and phenols.




     Table 10 shows the seasonal average and range of dissolved oxygen




levels for the regular Flint River sampling stations, X240 and X260.




This table also lists the average seasonal and yearly results of the




nitrogens, phosphates, solids, chlorides, phenols, and BOD .




     The yearly average dissolved oxygen at the upstream station X260,




located above the City of Flint, was 9.8 milligrams per liter (mg/1) - 91




percent saturated, with a range of 6.4 to 13.2 mg/1  (68 to 111 percent




saturated).




     In the lower Flint River, at Station X240, the yearly average




dissolved oxygen was 9.4 mg/1, with a range of 3.7 to 13.6 mg/1.  Dis-




solved oxygen saturation at Station X240 averaged 90 percent during 1965,




with a range of 35 to 170 percent saturation.
                               41

-------
     Maximum dissolved oxygen saturations of 100 to 170 percent at both




of these stations were noted in measurements made during May, June, August,




September, and October.




     The entire reach of the Flint River was sampled at 7 sampling




stations over a 24-hour period on August 11-12, 1965.  Dissolved oxygen




and temperature determinations were made every four hours.  A composite




sample was prepared and analyzed for BOD and other chemical determina-




tions.  Samples for bacteriological analysis were collected on two of the




six runs.




     Table 11 shows the daily dissolved oxygen fluctuation during this




survey for Station X240.




     The percent saturation increased during the daylight hours to a high




of 170 percent in mid-afternoon, and declined during the hours of dark-




ness.  This increased percent saturation is due mainly to the presence of




significant phytoplankton populations and/or photosynthetic production in




the river.




     Figure 10 shows the results of the August 11-12, 1965 survey and




lists the observed individual dissolved oxygen average values and their




ranges for each station.




     The lowest dissolved oxygen levels were recorded at Station X250,




located downstream from the City of Flint's sewage treatment plant.  The




24-hour dissolved oxygen average was 3.4 mg/1 with respective maximum




and minimum values of 5.7 and 0.6 mg/1.  The average dissolved oxygen




saturation was low with 45 percent, and a range of 7 to 68 percent sat-




uration.  The effect of the City of Flint's municipal wastes on the Flint




River is apparent from the low dissolved oxygen levels encountered down-




stream of the City of Flint's sewage treatment plant.




                               42

-------
     The average dissolved oxygen increased from 9.0 mg/1 .at Station X240




to a high of 11.5 mg/1 at Station X220 downstream.  The increase in the




average dissolved oxygen and percent saturation is associated with exces-




sive algal growth and subsequent production of oxygen.




     The average BOD  results at Stations X260 and X240, from measurements




made during summer and fall of 1965, were 4 and 6 mg/1, respectively.




     Five-day BOD results of composite samples taken during the special




OXSAG survey on August 11-12, 1965 on the entire reach of the'.-Flint River




are illustrated in Figure 10.




     High BOD,, levels of 6 to 11 mg/1 were recorded downstream at




Stations X240, X236, X230, and X220.  These high BOD  results were found




at the same locations as the high dissolved oxygen and coincided with




high phytoplankton populations as evidenced by biological sampling.




     The Flint River had a definite seasonal variation in the nitrate




concentration during the 1965 sampling period at Stations X240 and X260.




The nitrate concentration at Station X240 increased from an average of 1.41




mg/1 in January to April to an average of 1.96 mg/1 in the May through




September period.  In the October to December period, the nitrate




concentration reached an average level of 3.10 mg/1.  The average annual




nitrate concentration at Station X240 was 1.93 mg/1.  Station X260 had




an average annual nitrate concentration of 0.83 mg/1, with lower values




in the summer and fall, as shown in Table 12.




     Figure 11 depicts the increase of"riitrate concentrations during




the special OXSAG survey conducted on August 11-12, 1965, and the average




annual nitrate concentrations for the two regular sampling stations.  The




nitrate concentration increased from 0.90 mg/1 at Station X260, above the




City of Flint, to an average of 3.20 mg/1 at Station X236, downstream




                                43

-------
from Mohtrose.  Stations X230 and X220 had nitrate concentrations of 2.50




to 2.30 mg/1.




     The average annual ammonia nitrogen concentration in the Flint River




at Station X260, above Flint, was 0.56 mg/1; and at Station X240., down-




stream from Flint, was 1.09 mg/1.  Average annual organic nitrogen




concentrations for Stations X260 and X240 were 0.25 and 0.27 mg/1, respec-




tively.




     The average seasonal variation and annual total and soluble phosphate




concentrations found in the Flint River during 1965 at the regular




sampling stations, X260 and X240, are shown in Table 13.




     The average annual total phosphate concentration was 0.21 mg/1 at




Station X260 and 4.36 mg/1 at Station X240.  Soluble phosphate, as a




percent of total phosphate, at Stations X260 and X240 ranged from 61




to 76 percent.




     Figure 12 illustrates the average and range of total phosphate




concentrations for the two regular sampling stations, and also the results




of the special survey conducted on August 11-12, 1965.




     Total solids and chlorides were significantly high in the Flint




River as shown in Table 10.  The average annual total solids concentra-




tion at Stations X260 and X240 were 395 mg/1 and 505 mg/1, respectively.




Chloride levels made up 9 and 16 percent of the total solids.




     Figure 13 depicts the increase in total solids and chlorides in the




Flint River below Flint's sewage treatment plant during the special




survey conducted on August 11-12, 1965.  Chloride concentration of 27 mg/1




at Station X260 increased to 100 mg/1 at Station X250.  Chloride levels




accounted for 17 percent of total solids below Flint's sewage treatment
                                44

-------
plant.




     Average annual phenol concentration in the Flint River at Station X260




was 4 micrograms per liter (ug/1), with a range of 0 to 9 ug/1.  At




Station X240, the annual average phenol concentration was 5 ug/1, with a




range of 0 to 15 ug/1.




     Table 14 summarizes average iron, sodium, potassium, calcium,




magnesium, sulfate, and total hardness values found during the 1965 survey




in the Flint River for the two regular sampling stations.  Average annual




iron concentration for Station X260 was 1,350 ug/1, with seasonal averages




of 2,080, 1,000, and 230 ug/1.  At Station X240, average annual iron




concentration was 1,430 ug/1, with seasonal average values of 2,640, 540,




and 100 ug/1.




     Sodium and potassium levels were noticeably increased in the Flint




River from Station X260 to X240.  Calcium, magnesium, and sulfate




concentrations were typical of concentrations in other tributaries in the




Saginaw River Basin.  Hardness averaged 241 to 256 mg/1 upstream, and 231




to 233 mg/1 downstream of Flint.






Microbiological




     The microbiological findings for the Flint River are from the 1965




sampling period.  This sampling period was separated into three




intervals - January 11 to May 15, May 15 to September 15, and September 15




to November 30 - to coincide with the municipal waste chlorination period




beginning May 15 and ending September 15.  Representative median, low,




and high total, and fecal coliform results for the regular sampling sta-




tions are shown in Table 15.




     Total coliform densities at Station X260, above the City of Flint,






                                45

-------
ranged from 360 to 18,000 organisms/100 ml, with a median annual value




of 1,400 organisms/100 ml.  Station X240, located below the City of Flint's




sewage treatment plant, exhibited a median annual total coliform count




of 24,000 organisms/100 ml, with a range of 200 to 370,000 organisms/100 ml.




Percent fecal coliform remained fairly constant in the reaches above and




below Flint's sewage treatment plant, these values being 16 and 22 percent,




respectively.




     Chlorination had a definite effect on the total and fecal coliform




densities at Station X240 during the 1965 chlorination period.  The median




total coliform count at Station X240 declined from 150,000 organisms/100 ml




in the January 11-May 15 period to a median value of 4,000 organisms/100 ml




in the May 15-September 15 sampling period.




     A comparison of the average, median, and geometric mean values of




annual total and fecal coliform results for Stations X240 and X260 is




shown in Table 16.




     Figure 14 depicts the variation in total coliform distributions at




various sampling points in the Flint River during surveys conducted on




August 11 and 12, 1965.  The median annual total coliform densities for




the two regular sampling stations are also shown in Figure 14.  On




August 11, the total coliformdensities increased from 700 organisms/100 ml




at Station X260 above Flint to a high of 29,000 organisms/100 ml at




Station X256, then declined to a low of 500 organisms/100 ml at Station




X220.  On August 12, the total coliform density of 800 organisms/100 ml




at Station X260 increased to a high of 15,000 organisms/100 ml at




Station X256.  Station X250 had a total coliform count of 3,000 organisms/




100 ml, which increased downstream to a value of 12,000 organisms/100 ml




at Station X220.




                                46

-------
                                        TABLE 10.   FLINT RIVER WATER QUALITY
R i ver
Dissolved Oxygen
Avn M?x Min
5-Day
BOD
1965
NH3-N
AVERAGE CONCENTRATIONS
Seasonal
Tot.-x-
Tot.** Sol.
Org-N N03-N P04 P04
!H*
' Tot.
Sol.
Susp.
Sol .
Vol .*
S.S. Cl
Phenol s
January - April 1965
Flint
X240
X260

Flint
X240
X260

Flint
X240
X260

Flint
X240
X260
. . •
10.2
11.7


9.1
8.3


9.1
11.6


9.4
.9.8

12.9
12.3


13.6
10.1


10.9
13.2


13.6
13.2
./-:.
5.2
10.9


3.7
6.4


5.6
10.5

^
3.7
6.4
_
_
-


6
4


5'
4


6
4

1 .56
0.51
May -

0.50
0.81
October

0.97
0.28
January

1.09
0.56

0.22 1.41. 2.20
0.16 1.18 0.31
September 1965

0.35 1.96 4.46
0.38 0.44 0.16
- December 1965

0.23 3.10 9.23
0.27 0.70 0.06
- December 1965

0.27 1.93 4.36
0.25 0.83 0.21

1.77
0.19


3.26
0.11


6.90
0.04


3.29
0.13

464 '
369


533
422


554
414


505
395

37
22


18
18


9
14


25
19

11
4


4
3


6
8


7
4

77
29


83
23


100
33


83
28

5"
4


4
5


8
2


5
4
  Note: All  results  in  mg/1  except  phenols  - iig/1.
        Phosphates reported  as  PO^.
        Nitrogens (NH3,  NO^,  Organic)  reported  as  Nitrogen.
  "'Volatile  Suspended Solids
 •5tt:-Total phosphate includes:  ortho, poly, biological,  and organic  phosphate
•s:-::-::-Total soluble phosphate (performed  on filtered  sample)  includes:   soluble ortho,  soluble poly and soluble organic
     phosphate

-------
      TABLE 11.  DISSOLVED OXYGEN FLUCTUATION - FLINT RIVER
                          Station X240
Date
8/11/65
Time

0930

1325

1710

2100
Temp.
 °C

 18.0

 22.0

 26.0

 24.0
  DO
(mg/1)

  7.0

 13.1

 13.6

 10.3
Saturation

     74

    151

    170

    124
8/12/65
0125

0535
 22.0

 20.5
  6.2

  3.7
     71

     42
                                48

-------
                     TABLE 12.  FLINT RIVER
                Seasonal Nitrate-N Concentration
                             (mg/1)
Station

X240

   Average

   Range
Jan-April      May-Sept.      Oct.-Dec.
  ..1.41

0.89-1.60
   1.96

0.70-2.80
   3.10

1.90-4.60
Annua1



   1.93

0.70-4.60
X260

   Average

   Range
   1.18           0.44           0.70           0.83

0.90-1.60      0.20-0.90      0.30-1.20      0.20-1.60
                                49

-------
                      TABLE 13.   FLINT RIVER
          1965 TOTAL AND SOLUBLE PHOSPHATE CONCENTRATIONS
                             Seasonal
Station #
      Total Phosphate
           mg/1
Average   Minimum   Maximum
                        Soluble Phosphate
                              mg/1
                   Average   Minimum   Maximum
Jan.--April
   X240
   X260
  2.20
  0.31
0.50
0.10
 4.70
 0.60
1.77
0.19
0.10
0.00
4.60
0.40
May-Sept.
   X240
   X260

Oct.-Dec.
   X240
   X260

Annua1
   X240
   X260
  4.46
  0.16
  9.23
  0.06
  4.36
  0.21
0 .60
0.08
5.40
0.04
0.50
0.04
 8.70
 0.30
12.80
 0.10
12.80
 0.60
3.26
0.11
6.90
0.04
3.29
0.13
0.10
0.06
4.00
0.04
0.10
0.00
5.10
0.20
8.80
0.04
8.80
0.40
                                50

-------
                              TABLE 111.  FLINT RIVER WATER QUALITY
                                        1965 AVERAGE CONCENTRATIONS
                                                 Seasonal
River
Jan-April
Flint
X2hO
X260
May-Sept
Flint
X2UO
X260
Oct-Dec
Flint
X2hO
X260
Jan-Dec
Flint
X2UO
X260
Total
Iron

' 26UO
2080

5Uo
1000

100
230

1U30
1350
Sodium

68
31

58
15

77
2h

68 '
26
Potassium

Hi
9

13
5

17
7

15
8
Calcium

62
6h

66
69

59
63

62
65
Magnesium

23
23

27
30

19
27

23
26
Sulfate

8U
80

105-
86

76
70

89
80
Total
Hardness

o
233
2U1

25I»
267

231
256

238
253
Note: All results in mg/1, except Iron -
      Total Hardness as CaCO-j

-------
                     TABLE 15.  FLINT RIVER
             1965 TOTAL AND FECAL COLIFORM DENSITIES
                            Seasonal
Season and
Station No.

Jan. 11-May 15

   X240

   X260
     Total Coliform
    Organisms/100 ml
Median     Low     High
150,000   7,000   370,000

  1,700     360    18,000
    Fecal Coliform
    Organisms/100 ml
Median    Low     High
11,000   3,700   30,000

   520      60    1,700
May 15-Sept. 15

   X240

   X260
  4,000     200    21,000

  1,100     600     9,900
   100      20    1,700

   250     140      900
Sept. 15-Nov. 30

   X240

   X260
  3,400   1,000     5,800

  1,200     800     1,500
   360

   190
 10

180
700

200
Annua1

   X240

   X260
 24,000     200   370,000

  1,400     360    18,000
 5,300      10   30,000

   220      60    1,700
                                52

-------
                     TABLE 16.  FLINT .RIVER
        1965 TOTAL AND FECAL COLIFORM DENSITY  STATISTICS
                       (organisms/100 ml)
                                            Geometric
Station              Average     Median       Mean-.'-''.      Low      High
Total Coliform

   X240

   X260
Fecal Coliform

   X240                8,300      5,300         1,900        10       30,000

   X260                  490        220           320        60        1,700
94,000
3,600
24,000
1,400
20,000
1,800
200
360
370,000
18,000
                                53

-------
                                       FLINT  RIVER
                       DISSOLVED   OXYGEN  AND  5-DAY
                               AUGUST 11-12,  1965  SURVEY
           BOD

12
9
3

0
7








1 1 1 1 1 1 1 1 1
LEGEND
	 A 	
MAXIMUM -r
AVERAGE 9
MINIMUM •!•
*|
•
t



i i r L
0 60
f»






1 I 1 1 1
BOD COMPOSITE
DISSOLVED OXYGEN


•


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50 to 30
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r




1111,1111


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a a
0 >
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0 " 10 0

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 X
 o
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 (0
 O)
STATION
 NOS.
                                         N
                                         X
N
X
CM
X
c
m

O
                                          R IVER MILES

-------
                                FLINT  RIVER
                         NITRATE  CONCENTRATION
                          AUGUST  11-12,  1965  SURVEY
IUU.U
10.0
1.0
O.I
7
TION
S.


























1 1 1 1 1 1 1 1 1






LEGEND
__ c 	
MAXIMUM -|-
AVERAGE &
MINIMUM J-

















•

N^
^^^
*V
^



I I I I. I I I I I







COMPOSITE SAMPLE
AUG. II-I2, I965 SUR
AVERAGE 8 RANGE
OF 4965 SAMPLES







/
/
/
/
*
/
**^^ '
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tL
CO
t-
2
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D
L.
. 9 1 1 1 1 L 1 f I














•






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—  o • O

-------
                                    FLINT  RIVER
                                 TOTAL  PHOSPHATE
                             AUGUST  11-12, 1965 SURVEY
roo.o







10.0






1.0







O.I







0.01
7
r ION
s.































1 1 1 1 1 1 1 1 1
0 6































1 ' ' fc
0
c
1C
c\




















/
/
/
/
Y- 	






1 1 1 1 1
5









	 ~f
f


/
/
/
	 ~/ 	

/
/









0.
to
t-
z
J
u.
1 1 1 Ol° 1 1 1 1 1
0 4
10
in
CM








p — ___ _^_



















K
10 .
z
n
3
.J
U.
0? 1 1 1 1 IQ 1 1 1
0 3
O 10
n f
N CM












I
















<
(
(
t
1
1
0
c
<
c








r 	 ^_












LEGEND
	 0 	
MAXIMUM J
AVERAGE 0
MINIMUM J-

J

L U
1 K

»«=. - I
2- S
- Z ui
E u 2
c CO 0.
°l° 1 1 1 1 1 Ol P
^
> v
t 10
J N








	 ^_ 	













COMPOSITE SAMPLE
AUG. 11-12, 1965 SUR
AVERAGE 8 RANGE
OF 1965 SAMPLES







i I I 1 I0 1 1 1 1
0 1
O
K>
(M



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VEY

	 	 	
sc
u —
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0 UI
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3 *
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„ 1 1 °l 1 1 1 1 1 1
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O
c
m
IV)
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o
Q.

CA
O
en
E
i
UJ
to
o
                                        RIVER MILES

-------
  tooo.o
                                            FLINT  RIVER
                               TOTAL   SOLIDS  AND   CHLORIDES
                                   AUGUST  11-12,  1965  SURVEY
































0 	






.

X
^
/
<•
tsr









i i i ID ; i i i i




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Q.
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0 1 1 °l 1 1 1 1 1 1
 E
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 Q
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 (0
    10.0
    1.0
      70
S TATION
 NOS.
                   60
                                 50
                                                           30
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ID
ID
10
10
o
CM
                                                                                                    O
                                                                                                    c
                                                                                                    m
                                                      CM
                                                      X
                                    (M
                                    X
          CM
          X
                                                RIVER  MILES

-------
        FLINT  RIVER
TOTAL  COLIFORM DENSITIES
  AUGUST 11-12,  1965 SURVEY
1,000,000








i
o 100,000
o

\


co
z
<





EGEND
_

--A 	
HIGH T
MEDIAN 0
LOW J-







m



f
/I
//
//
/
0/
y
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1 t 1 I 1
5
>
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j








SAMPLES TAKEN AU
MEDIAN -a RANGE
OF 1965 SAMPLES






A
/A\
/ / » \
/ V \
/ X \
' -L \
\








Q.
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10
t-
2
k.
1 I 1 Ol° 1 ! 1 1 1
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G. 12, 1965













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\
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r i- °=
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                                                  3D
           RIVER MILES

-------
                  DISSOLVED OXYGEN PROJECTIONS







     The water quality data described in previous sections of this report




were submitted to analyses in a mathematical model depicting oxygen




balance in streams.  This particular model is a modification of the




classical Streeter-Phelps formulation for oxygen balance in a stream.




This equation includes an additional non-conservative oxygen demand




(Kjeldahl nitrogen), which acts in a similar fashion to the BOD factor in




the original formulation.




     Long-term oxygen demand and nitrogen balance determinations were




made on stream and waste source samples to determine a laboratory K-rate




in order to calculate the ultimate carbonaceous oxygen demand.  The




ultimate carbonaceous oxygen demand stream profile was constructed, and




the stream BOD decay rate determined.  A similar profile of the Kjeldahl




nitrogen yielded the nitrogenous demand decay rate.   These profiles were




checked by a wastes loadings profile.  All rates were converted from the




stream temperature to 20°C.




     Reaeration rates were initially calculated based on the O'Connor-




Dobbins formulation for natural streams using computed reach velocities




and depths.   These values were used for initial match runs, but were




then modified somewhat in the final match run for simplicity in .the




projection runs.  The photosynthetic production of algae is not a factor




in the model.  No attempt was made to match the dissolved oxygen profile




to observed data above or near the saturation value.




     Survey data indicated an apparent high decay rate for the Kjeldahl




nitrogen portion of the total oxygen demand in the stream reach below
                               59

-------
the main municipal waste source.  This high demand rate was indicated




also by the observed dissolved oxygen profile.  (Previous work by others




indicated an intensified rate of oxygen demand in this reach.)  The




Kjeldahl nitrogen level in this reach had the potential for an abnormal




decay rate.  With the exception of this reach, a uniform decay rate was




used throughout the stream,  A uniform decay rate was used for the car-




bonaceous portion of the total oxygen demand.  The presence of significant




algae concentrations as evidenced by diurnal dissolved oxygen fluctuations,




and visual observations of the stream, is believed reponsible .for the




anomalous BOD data found during the 1965 survey.  Resurveys during 1966




indicated a somewhat different decay rate which more closely resembled




the nitrogen decay rate.  This rate was used for the final match run.  The




computed match run profiles are shown superimposed on the survey data




(Figures 15 and 16).  Loadings for the final match run are included in




Table 17.




     The parameters determined for the match run were used to project the




expected dissolved oxygen profiled for a number of flow and loading




conditions.  Minor modifications were made for ease in projection changes.




All additional augmentation was assumed to have the same yield for all




low flow conditions due to the minor increase in flow below the initial




reach.  All waste sources were combined on a flow basis with the major




municipal source.  The concentrations used were those determined during




the 1965 survey.  For all projection runs, the initial stream parameters,




with the exception of flow, remained constant.




     Figures.,17 through 20 show computed dissolved oxygen profiles for




the following situations:
                                60

-------
Figure 17  -  1965 Summer Survey Flow (75 cfs)
                 Temperature ranges - 15°C to 30°C at 5°C increments
                 Stream loadings -  1965 - 100%; 1990 - 316%; and
                   2020 - 741%

Figure 18-7 Day Once in 10 Year Flow (47 cfs)
                 Temperature ranges - 15°C to 30°C at 5°C increments
                 Stream loadings -   1965 -  100%; 1990 - 316%; and
                   2020 - 741%

Figure 19-1 Day Once in 10 Year Flow (38 cfs)
                 Temperature ranges - 15°C to 30°C at 5 C increments
                 Stream loadings -   1965 -  100%; 1990 - 316%; and
                   2020 - 741%

Figure 20  -  Augmented Flow (100 cfs)
                 Temperature ranges - 15°C to 30°C at 5°C increments
                 Stream loadings -   1965 -  100%; 1990 - 316%; and
                   2020 - 741%
                           61

-------
                        TABLE  17.  -FLINT RIVER  - LOADINGS FOR MATCH RUN  -  1965 MODEL
Flow 5-Day BOD Ultimate BOD Kjeldahl N. Dissolved Oxygen
MOD cfs mg/1 #/day mg/1 #/day mg/1 #/day mg/1 #/day
Municipal Wastes
Flint 25.9 hO. I 12 2590 15 32^0 12.7 2690 li.O
Flushing .h 0.6. hi 137 53 177 11.2 37 2.0
Montrose 1.3 2.0 101 1090 lU7 1590 11.8 128 0.0
Industrial Wastes
81*7
7
0

     Brent Run      2.6     li.O         3        88       3.5       102         2.3     50        5.0          108


Tributary Flow

     Flint     . •   1*8.5    75.0  '       5      201^0       5.6      2270           .9    36U        U.9         1980
        (Initial)

-------
                                          FLINT   RIVER
                                     DISSOLVED  OXYGEN
                                     SUMMER  1965  SURVEY
 UJ
 X
 o
 Q
 QJ
 (O
 o
STATION
 N OS.
D.O. SATURATION
8.7 mj/l
                                             R IVER MILES

-------
                                                     FLINT    RIVER
                            KJELDAHL  NITROGEN   os  N   AND  5-DAY  BOD
                                               SUM MER   1965  SURVEY
    100.0
               LEGEND
w
D
o>
E
i
z

O
O
     10.0
                   0

                   A
                         COMPOSITE 5-DAY BOD

                         COMPOSITE
                         COMPUTED PROFILE
                         COMPUTED PROFILE
KJELDAHL NITROGEN
       ULTIMATE BOD
       KJELDAHL NITROSE
   <3>
   e
   1
   O
   °
                                                  -X_J
                                                     V
      '•'
U

i£
                                                                          -A-
      O.I
       70
S TATION
  NOS.
                          I I  I  I- ).. I III
                       60
                                        50
                                         J	I  i .1° I  I  I I  I
                                                          9  1
                                                               1 1  L  1 1  1
                                                                           K I-

                                                                           •" z
                                                                           2 UJ
                                                                           OK
                                                                           So

                                                                          I °°
                                                                              ..1.11 ',1.1
                                                                                                          I  I °l  I  I.I  I II
                               O
                               u>
                                                        10

                                                        O
                                                                        30
                                                        (M
                                                        X
                                                                                                ID
                                                                                                «l
                                                                                                        10
                                                                                                        CM
                                                                                                        X
                                                                                                                         O
                                                                                                                         C
                                                                                       m


                                                                                       O!
                                                          RIVER  MILES

-------
                                                         . IGU.RE  17
 10
                          FLINT  RGVER  •
        COMPUTED  DISSOLVED  OXYGEN PROFILES
          EFFECT  OF  TEMPERATURE  AND  LOADINGS
                  1965  SUMMER SURVEY  FLOW
   (a) 1965  LOADINGS
  60
               40
                            30            20
                             RIVER MILES
                                                      10
 10
   (b) 1990 LOADINGS
o>
E
i
O 4
                             ' I 1 ill I I  1 I
  CO
               40
                            30            20
                             RIVER MILES
                                                      10
   (c) 2020 LOADINGS
  50
                            30            20
                             RIVER MILES

-------
                                                                   r IGURE 18
  10
                               FLINT   R 1 VER
         COMPUTED   DISSOLVED  OXYGEN  PROFILES
            EFFECT OF TEMPERATURE  AND   LOADINGS
                    7  DAY  ONCE  IN  10  YEAR   FLOW

    (o) 1965  LOADINGS
 CP
 £
 i
O
                                                   LEGEND
                                                       	I8°C
                                                       	  20°C
                                                           25°C
                                                           30°C
  o i  i i  i
                                                        I  i I  I I
                                                                 I  I I  I I  I I  11
   50
                                 30              20
                                  RIVER  MILES
                                                               i o
  10
    (b)  1990  LOADINGS
 a>
 E
 i
O
                                                 ,;.••*•
         I  U J\I I  I ^
                                 . •>•
   BO
                  40
                                 30              20
                                  RIVER  MILES
                                                               10
  10
    (c)  2020 LOADINGS
^x 6

E
i
O 4
O
           -Vr-
  0  i i  i i  i \ \i i \   i i  i i  i i  i i  i^J**Ti  i i  i i  i i  i   i.-r'T  i i-—>*l"'i
   50
                  40
                                 30              20
                                  RIVER  M ILES
                                                               10

-------
                                                r I G U R E
                      FLINT  RIVER
       COMPUTED  DISSOLVED  OXYGEN  PROFILES
        EFFECT  OF TEMPERATURE  AND  LOADINGS
              I  DAY ONCE IN  10  YEAR FLOW
   (o) 1965 LOADINGS
                       30    "      ZO
                         RIVER MILES
10
   (b) 1990 LOADINGS
 10
             40
   (c) 2020 LOADINGS
                       30          20
                        RIVER MILES
                                             10
^ 6
o>
E
l
O 4
O
          \
   ...T\\\
   i i i  i t i i\i i
  50
            40
                       SO          20
                        R IVER MILES
                                             10

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                                                  rIGURE 20
                       FLINT  RIVER
       COMPUTED  DISSOLVED OXYGEN  PROFILES
         EFFECT OF TEMPERATURE AND  LOADINGS
                     AUGMENTED  FLOW
 10
   (o) 1965 LOADINGS
  so
             40
30          20
 RIVER  MILES
   (b) 1990 LOADINGS
             40
                        30           20
                         RIVER MILES
 10
   (c)  2020 LOADINGS
o>
E
i
O

        \\\
   I  I I I I \1 I . I  I
              I I I I I
  so
             40'
                        30          20
                          RIVER MILES
                                               10

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               SUMMARY AND WATER QUALITY PROBLEMS







     Water quality of the Flint River Basin is, in general, good above




and degraded below the City of Flint.  The upper portion of Kearsley




Creek is managed as a trout stream.  The Flint River provides water




supply for the City of Flint, with storage in the Holloway Reservoir




located 20 miles upstream.  The stream reaches below the municipalities




have moderate levels of coliform bacteria.  Below the City of Flint,




however, these levels are excessive during the non-chlorination period.




The Flint River below Flint has extremely high levels of nutrients -




levels of nitrate were 2 mg/1 and phosphate about 4.4 mg/1 in 1965.




Chloride levels were in excess of 80 mg/1 in this area.  A severe dissolved




oxygen depression appears below the Flint sewage treatment plant.




     The Flint River Basin above the confluence of the South Branch Flint




River is sparsely populated, having only two communities - North Branch




(832), and Clifford (330).  Lapeer (8,020) is located midway up the South




Branch Flint River.  Also located in this area is the Lapeer State and




Home Training School.   The only other community in this part of the basin




is Metamora (390).  The community of Columbiaville (789) is located on




the Flint River about 10 miles above the headwaters of the Holloway




Reservoir.  Otisville (701) and Otter Lake (523) are two communities in




the Flint River drainage below Holloway Reservoir.  Kearsley Creek joins




with the Flint River at the City of Flint.  Ortonville (702) is at its




headwaters, and Davison (1,745) is on Black Creek near its confluence




with Kearsley Creek.  Both communities are upstream of Kearsley Creek




Reservoir, which is a 2,000 acre-feet emergency water supply for the City
                                69

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of Flint.  The City of Flint, in 1960, had a population of 196,940 and




is the third largest city in Michigan.  There are numerous suburbs




located in the immediate area:  Burton Township  (29,700), Flint Town-




ship  (300), City of Flushing  (3,761), Mt.  Morris Township (17,000),




Grand Blanc (1,565), Grand Blanc Township (640).  Further downstream,




other communities are:  Montrose (1,466),  and on the tributaries Mt.




Morris (3,484), and Clio (2,212).  The community of New Lothrop (510)




is located on Mistequay Creek, a tributary to the Flint River near its




confluence with the Shiawassee River.  Mistequay Creek joins the natural




channel of the Flint River downstream of the Cutoff Canal which diverts




excess flows to the Shiawassee River.




     The following communities provide secondary waste treatment:   Flint,




Flushing, Davison, Lapeer, Lapeer State Home and Training School,  and




Swartz Creek.   The communities of Columbiaville and North Branch have no




formal treatment system, although there are some sewers which discharge




raw or semi-treated sewage to the Flint River.  There are a number of




industrial sources in the City of Flint which discharge directly to




various points along the Flint River.  These include the following divi-




sions of the General Motors Corporation:  AC Spark Plug, Buick, Chevrolet-




Flint, Ternstedt, Chevrolet Assembly Plant, and Chevrolet Engine and




Stamping Plant.  The Fisher Body Division of General Motors Corporation




is located in the community of Grand Blanc, and the Parts Division -




General Motors Corporation is located in the community of Swartz Creek.




All of these industrial sources are rated adequate by the Michigan Water




Resources Commission.  The Vogt Packing Company at Grand Blanc is rated




as "providing control," although the adequacy of control has not been
                               70

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established.  Many communities in the basin have joined the Genesee




County-Metropolitan System which has six districts for sanitary sewers




and sewage treatment plants.




     In February 1965, a reconnaissance survey of the Flint River from




above Columbiaville to its confluence with the Shiawassee River was




conducted.  Twenty-one locations on 61 miles of stream were sampled.




Moderately high bacterial levels were found from Columbiaville to the




Holloway Reservoir, where a decrease in bacterial concentration was




noted.  High bacterial levels were found below the outfall of the Flint




sewage treatment plant.  The bacterial level below Flint declined in the




area of Montrose.  A moderate increase in concentration was noted in the




lower ten miles of stream, although there was an abrupt decrease in the




last two miles below the Flint River Cutoff Canal.  Chloride concentra-




tions increased moderately from above Columbiaville to the City of Flint,




and more than doubled at the City of Flint to remain at a high level




throughout the remainder of the stream.  A severe dissolved oxygen




depletion was noted below the City of Flint.  A moderate depression was




noted in the area from above Columbiaville to the Holloway Reservoir.  An




increase in dissolved oxygen occurred in passage through the reservoir.




     Two locations on the Flint River were sampled routinely by the FWPCA




in 1965.  These were above the City of Flint and at the community of




Montrose.  The results are indicated on Table 18.




     The data indicate that a substantial increase occurs in the pollutional




level of the river from Flint and the other sources.   Chloride level




tripled, the nitrogen levels - nitrate, nitrite, and ammonia - doubled.




The phosphate levels, however, increased 20 times (2,000 percent) from a
                                71

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level of 0.2 mg/1 above Flint to a level of 4.0 mg/1 at Montrose.  The




increase was even more spectacular during the lower flow periods (summer).




There was not as great a difference in the dissolved oxygen and BOD levels




of the two locations due to the recovery zone of fifteen miles of stream




passage.  Bacterial densities increased substantially in the stream,




although this increase was predominantly during non-disinfection period




of September to May.




     An>;>fldditional location on the Flint River at Flushing, downstream




from the Flint sewage treatment plant, was sampled from September to




December 1965.  The results are indicated on Table 18.




     The degraded quality of the river is evident from the data.  Organic




demand is indicated by both the BOD  and ammonia nitrogen levels.




Nutrient levels - nitrate and phosphate - increased considerably in the




river's passage through the Flint area, with a fiftyfold increase (5,000




percent) in the phosphate concentration.  Chlorides increased fourfold;




dissolved oxygen levels were low even though the sampling period did not




include the high temperature low flow midsummer period.  Bacterial




densities were high, although the disinfection period was not included




in the survey.




     Samples were collected on a monthly basis from May to November at




two locations in the Basin.  These were Farmers Creek at Lapeer and the




headwaters of Swartz Creek near Holly.  The results of those analyses




are listed on Table 18.




     The data indicate that there is considerably more pollution entering




Farmers Creek than Swartz Creek, as evidenced by the higher chloride and




phosphate levels.  The Farmers Creek sampling station was located on the
                                72

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grounds of the Lapeer State Home and Training School, a short distance




upstream from the sewage treatment plant.  The headwaters of Swartz Creek




are in Holly State Recreation Area, a few miles upstream.  The community




of Holly is at the headwaters of the Shiawassee River, therefore, there




are no significant sources of pollution to the Creek.  The data indicate




quality which may be expected in an unpolluted stream.




     Due to the dissolved oxygen depression noted below the City of Flint




in a reconnaissance study, an intensified survey was conducted during




the summer of 1965.  Seven locations, at about 6-mile intervals along the




lower 40 miles of the river from above Flint to below the community of




Fosters, were sampled every 4 hours for 24 hours.  Dissolved oxygen and




temperature determinations were made on these samples.  Composites




were prepared for other .parameters and analyzed.  Samples for bacterio-




logical analysis were collected on two of the six runs.




     Above the City of Flint, the water quality approximated that of




Swartz Creek near Holly and Farmers Creek at Lapeer.  Nutrients, BOD,




chloride, and bacterial levels were low.  The only major sources of




wastes are Lapeer and Lapeer State Home and Training School sewage treat-




ment plants on the South Branch Flint River about 10 miles from its con-




fluence with the Flint.  In the 20 miles of stream from the confluence




point to Flint is the 15,350 acre-feet Holloway Reservoir.




     There was a moderate increase in the pollutional level of the Flint




River passing through the City of Flint.  There are three direct indus-




trial sources on the river, five industrial, and two municipal sources




on the tributaries - Kearsley Creek, Thread River, and Swartz Creek,




which join the Flint  River in the City of Flint.  The chloride level
                                73

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tripled, and the phosphates increased from 0.08 to 1.70 mg/1 - a twenty-




fold increase.  There was a minor decrease in dissolved oxygen level.




     Below the Flint sewage treatment plant outfall, at a location above




the City of Flushing sewage treatment plant, there were excessive increases




in most pollution indicies.  Chlorides increased to 100 mg/1 and remained




at this level downstream.  Nitrates increased to 2.8 mg/1 as nitrogen.  The




total phosphate concentration in the river increased to 11.8 mg/1 and




remained at this level for the remainder of the stream.  The oxidizable




nitrogen concentration increased to 2.5 mg/1 as nitrogen, and accounted




for severe oxygen depletion found in the river at this point.  Both the




BOD and COD (chemical oxygen demand) increased to moderate levels of




pollution and continued to increase downstream.  Bacterial levels indicated




only moderately polluted waters.  Brent Run, a tributary which joins the




Flint River at Montrose, and which receives the effluent from the Tern-




stedt Division, General Motors Corporation, had high levels of chlorides,




dissolved solids, and conductivity.  Both nitrogen and phosphate concen-




trations in this stream were high, although BOD and COD levels were low.




The dissolved oxygen level was at saturation.




     There was considerable diurnal variation in dissolved oxygen at all




stations.  Maximum variation (10 mg/1) was found in the recovery area near




Montrose.  Average daily concentration at this location and at all down-




stream locations was above saturation.  Minimum observed dissolved




oxygen - 0.8 mg/1 - was just above the Flushing sewage treatment plant




outfall.  Average daily concentration at this location was at 3.5 mg/1.




The dissolved oxygen sag from above the City of Flint to this location




showed an average reduction of 5 mg/1 in the stream..
                               74

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     The City of Flint presently (1965) accounts for in excess of 90




percent of the waste flows in the basin.  Present removal efficiency is




in excess of 90 percent for this plant in terms of 5-day BOD loadings.




The City of Flint currently obtains its water supply from the Flint River




with return via the Flint sewage treatment plant.  During the seven day




once-in-ten-year low flow, about 88 percent of the river flow yield below




Flint would have passed through the sewage treatment plant unless excess




water was released from storage.  This area is expected to have a tie-in




to the Lake Huron water supply under construction by the City of Detroit.




With water supply from Lake Huron,  the storage now available in Holloway




Reservoir could sustain a flow of 100 cfs in excess of sewage treatment




plant flows during drought years.




     The present high ratio of sewage treatment plant flow to natural




river flow results in high concentrations of nutrients - 10 mg/1 of total




phosphates and 3 mg/1 of nitrate-nitrogen were found during the 1965




survey, which had an average flow of 75 cfs - about 1-1/2 times the 7 day




once-in-ten-year flow.  The concentrations remained at about the same




level throughout the stream to its  junction in the Shiawassee Flats area.




The effect of these nutrients in the Flint River was readily apparent




in both the physical observations of algae and in the supersaturated




dissolved oxygen levels caused by photosynthesis.  The sewage treatment




plant phosphate level of about 30 mg/1 represents approximately 50 per-




cent removal.  The Flint area discharges increased the phosphate level




by about 140 times during the 1965  survey.  Phosphate removal of 95




percent (3 mg/1 effluent) would have resulted in a river concentration




of 1.7 mg/1 during the 1965 survey.
                               75

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     The principal quality demanding uses of water in the Flint River




Basin are municipal and industrial water supply,  aquatic life,  recreation




and aesthetics.




     The use of the Flint River as a source of water for industrial and




municipal use is expected to decrease considerably with the completion




of the Lake Huron-Flint Project of the Detroit Water Services.   A prime




consideration for quality objectives is the impact of the Flint River on




the Saginaw River.  The Flint River, with approximately 24 percent of the




flow, contributes about 50 percent of the phosphate loadings to the




Saginaw River.   The removal of nutrients and organic materials  is desirable




also to prevent the severe algal blooms which currently degrade even the




aesthetic quality of the Flint River below Flint.
                                76

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Table 18. Vater Quality
FLINT RIVER
   1965
Parameters
Dissolved Oxygen
5 -day BOD
NH3-N
Org-N
NO^-N
N02-N
Total P04
Total Sol. POi^
Total Solids
Suspended Solids
Vol. Susp. Solids
cr
Phenol
PH
_X29
NS
0
0
4
3
5
4
5
5
4
5
2
5
0
5
5 - Fanner's Creek
Avg Low High
_
.• -
0.26 0.13 0.33
0.12 0.07 0.18
0.2 0.1 0.4
0.03 >o.oi o.o4
. 0.3 0.2 0.5
0.3 0.2 .0.3
, 424 334 481
10 1 17
5 0.9
43 24 v 67
-
8.1 7-7 8.4
X260 above Flint
NS
12
7
1 IL
1 K
14
10
14
14
14
14
13
16
15
16
Avg Lo;r High
10.6 6.4 13,2
5 3 8
0.59 0.23 2.65
0.26 0.10 0.70
0.8 0.2 1.6
0.02 0.01 . 0.03
- -." _ ^-0.04 0.60
..- <0.04 . 0.40
394 314 508
20 4 44
5 1 12
28 13 63
409
7-9 7-6 8.5
X 296 . '. Swart-z . Creek
NS
0
0
3
3
5
4
5
5
4
5
2
5
Q
5
AVP Low HiRh
_
_
0.25 0.17 0.35
0.12 0.08 0.16
0.1 0.1 0.2
0.02 0.00 > 0.03
.£.0.04 0.30
<<0.04 0.10 .
399 280 675
12 3 29
407
9 ' 3 11
i, v .
7.9 7.4 ' 8.4

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     TablelS.  Water  Quality (cont'd)
FLINT RIVER

   1965
Parameters
Total Iron
Sodium •
Potassium
Calcium
Magnesium
Sulfate
Total Hardness
Conductivity
Total Coliform
Fecal Coliform
Fecal Strep
X 295 . . Farmer ' s Creek
KS
1
2
2
2"
3
4
0
5
0
0
6
Avg Low High
100
32 19 44
96 11
72 70 73
28 20 33
50 40 70
......
650 560 740
...
- • ' _

X260 .above Flint
KS
14
12
12
14
14
14
15
17
15
13
13
Avg Low High
i4oo 100 3600
26 4 100
8 2 16
65 58 77
26 15 4o
80 50 120
253 190 326
520 330 730
1,500 360 18,000
220 60 1,700

X296 ' Swartz., Creek
US
1
2
2
2
3
4
0
5
0
0
0
Avg Low High
200
9 89
434
. 54 46 62
' 21 15 26
37 ^.0 66
_
420 350 480
_
-

-J
oo

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Table 18. Water Quality  (cont'd)
                                              FLINT RIVER
                                                 1965
Parameters
Dissolved Oxygen
5 -day BOD
NH3-N
Org-N
N03-N
NOg-N
Total P04
Total Sol. POij.
Total Solids
Suspended Solids
Vol. Susp. Solids
cr
Phenol
PH
X250 at Flushing
NS
6
6
5
5
6
1
6
6
6
6
6
6
6
6
Avg Low High
4.2 1.8 9.2
10 7 15
4.70 3-50 6.20
0.55 0.35 0.96
1.9 0.8 3.1*
0.29
9.7 5-9 15-2
7.4 4.8 12.8
.530 470 582
n o 19
7 0 12
101 92 112
619
7A 7.0 7-6
X2UO at Montrose
NS
12
7
llf
14
14
10
14
14
14
14
13
16
15
16
Avg Low High
9.7 5-2 12.9
6 3 11
1.15 0.17 3.38
0.26 0.10 0.50
1.9 0.7 4,6
0.06 0.017 . 0.29
4.1 0.5 12.8
3.2 O.l 8.8
505 358 771
27 2 122
8 1 . 32
83 28 252
6 0 15
7.8 7.4 8.4

NS








,



•

Avg Low Hich




,^










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     Table  18.  Water Quality (cont'd)
FLINT RIVER

   1965
Parameters
Total Iron
v •* '
SodiUm
Potassium
Calcium
Magnesium
Sulfate
Total Hardness
Conductivity
Total Coliform
Fecal Coliform
Fecal Strep
'M
• X250 at Flushing
KS
3
5
5
6 '
6
6
6
6
3
3
3'..

Avg Low High
-_ • • ^.100 200
6 >100
16 2 22
58 51 66
IT 12 25
89 60 no
226 210 268
810 74o 900
3io;ooo 17,000 68o,ooc
88,000 3,200 130, OOC
4,200 ^90 8,30(

X2kO at Montrose
KS
1U
13
13
14
1^
14
14
17
15
13
13

Avg Low High
- ^1100 8300
62 12 248
15 .3 39
62 45 74
23 14 45
89 49 132
239 176 320
700 430 1160
49,000 400 370,000
5,300 10 30,000
450 10 3,500


NS












Avg Low High












oo
o

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                                  NOTES
                                   for
                         WATER Q3ALITY TABLES
NS    ............ Number of samples

Chemical Parameters

      Cl    . ... ........ Chloride            Mg   ..... . ...... Magnesium
      Fe    .. ....... . .. Iron                Na   ..... ....... Sodium
      SOI*   ............ Sulfate             K    ....... ..... Potassium
      81    ....... .*... Silica              003  ............ Carbonate
      Ca    ........... . Calcium             HCOj ............ Bicarbonate

      Total hardness:  reported as CaC03
     Nitrogens:       ammonia (NE^), organic, nitrates (NC^), and
                      nitrites (N02) reported as nitrogen equivalent (N)
     Phosphates:      reported as

               Total phosphates include: ortho, poly, biological, and organic

       Total soluble phosphates include: soluble ortho, soluble poly, and
                                         soluble organic

     pH:             reported in standard units


     All results recorded in milligrams per liter (mg/l) except:

         phenols and iron   ............ mierograms per liter (ug/1)
                     *
         conductivity      . . ....... .... mlcromhos per centimeter (umhos/cm)


Microbiological Parameters

     Total Coliform     )
     Fecal Coliform     }      reported as organisms(MF)/100 ml
     Fecal Streptococcus).:

     Total Plate Count:         number of bacteria/ml

     Median value is used for "average" statistic except as noted.
         Indeterminate values (less than«£. or greater than.* )  not used
                      in calculating average

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