U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
WORKING PAPER No,
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
•&GPO 697-032
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REPORT
ON
LAKE GRANT
BROW COUNTY
OHIO
EPA REGION V
WORKING PAPER No,
WITH THE COOPERATION OF THE
OHIO ENVIRONMENTAL PROTECTION AGENCY
AND THE
OHIO NATIONAL GUARD
JUNE, 1975
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CONTENTS
Page
Foreword i i
List of Ohio Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 8
V. Literature Reviewed 12
VI. Appendices 13
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11
FOREWORD
The National Eutrophication Survey was Initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication analysis are based on related concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [§303(e)], water
quality criteria/standards review [§303(c)j, clean lakes [§314(a,b)j,
and water quality monitoring [5106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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111
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
ACKNOWLEDGMENT
The staff of-the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Ohio Environmental Protection
Agency for professional involvement, to the Ohio National Guard
for conducting the tributary sampling phase of the Survey, and to
those Ohio wastewater treatment plant operators who provided
effluent samples and flow data.
Ned Williams, Director, and Tom Birch, Ken Carr, Larry
Dietrick, Ron Havlice, Larry Korecko, Rod Mehlhop, Terry Wheeler,
and John Youger, Ohio Environmental Protection Agency, provided
invaluable lake documentation and counsel during the Survey,
reviewed the preliminary reports, and provided critiques most
useful in the preparation of this Working Paper series.
Major General Dana L. Stewart, then the Adjutant General
of Ohio, and Project Officer Lt. Colonel Robert C. Timmons,
who directed the volunteer efforts of the Ohio National Guards-
men, are also gratefully acknowledged for their assistance to
the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF OHIO
LAKE NAME
Atwood
Beach City
Berlin
Buckeye
Charles Mill
Deer Creek
Delaware
Dillon
Grand Lake of St. Marys
Grant
Holiday
Hoover
Indian
Lo ramie
Mosquito Creek
O'Shaughnessy
Pymatuning
Pleasant Hill
Rocky Fork
Shawnee
Tappan
COUNTY
Carroll, Tuscarawas
Stark, Tuscarawas
Mahoning, Portage, Stark
Fairfield, Licking, Perry
Ashland, Richland
Fayette, Pickaway
Delaware
Muskingum
Auglaize,
Brown
Huron
Delaware,
Logan
Auglaize,
Trumbull
Delaware
Ashtabula, OH; Crawford, PA
Ashland,
Highland
Greene
Harrison
Mercer
Franklin
Shelby
OH; Crawford,
Richland
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LAKE GRANT
Tributary Sampling Site
Lake Sampling Site
Sewage Treatment Plant
1 [ ? J Km.
iMi.
Scale
Map Location
39D61—
83-58'
39-02—
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LAKE GRANT
STORET NO. 3912
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Lake Grant is eutrophic. Among
the 20 Ohio lakes studied, Lake Grant ranked thirteenth in
overall trophic quality when compared using a combination of
six parameters*. Ten lakes had less median total phosphorus,
12 had less median dissolved phosphorus, eight had less median
inorganic nitrogen, 13 had less mean chlorophyll a_, and 16 had
greater mean Secchi disc transparency.
Survey limnologists noted that Lake Grant was turbid both
sampling times; and a considerable growth of rooted aquatic
vegetation in the shallows along the shorelines at both
sampling stations was observed.
B. Rate-Limiting Nutrient:
Lake Grant was not sampled in the spring, and no algal
assay sample was collected. The lake data indicate phosphorus
limitation in August and October.
C. Nutrient Controllability:
1. Point sources — It is estimated that the Mount Orab waste-
water treatment plant accounted for nearly 23% of the total
phosphorus load to Lake Grant during the sampling year. The
* See Appendix B.
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2
calculated phosphorus loading of 8.51 g/m2/yr is over 8 times
that proposed by Vollenweider (Vollenweider and Dillon, 1974}
as a eutrophic loading (see page 11). However, the mean
hydraulic retention time of Lake Grant is a rather short 24
days, and Vollenweider's model probably does not apply.
While even complete removal of phosphorus at the Mount Grab
wastewater treatment plant would still leave a loading in
excess of a eutrophic loading, in view of the questionable
applicability of Vollenweider's model, it is likely that a
high degree of phosphorus removal would result in a reduction
in the incidence and severity of nuisance algal blooms (note
that the phosphorus input of the Mount Orab facility would
constitute a significantly greater proportion of the total load
during the summer and fall months when algal blooms are most
troublesome and when non-point phosphorus contributions are
minimal because of low stream flows). Rooted aquatic vegeta-
tion probably would not be affected by the phosphorus reduction,
however, because of the alternate source of nutrients in the
bottom sediments of the lake.
2. Non-point sources—It is estimated that non-point sources,
excluding precipitation, contributed about 77% of the total phos-
phorus loading to Lake Grant during the sampling year.
The phosphorus export rates of Sterling Run and Plum Run were
somewhat high during the Survey sampling year (see page 10).
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3
However, the rates of the two tributaries were essentially
identical; and since Plum Run was not impacted by point sources,
it is concluded the rates resulted from land-use practices in
the Lake Grant drainage area.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 0.76 kilometers2.
2. Mean depth: 1.9 meters.
3. Maximum depth: 8.1 meters.
4. Volume: 1.468 x 106 m3.
5. Mean hydraulic retention time: 24 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Sterling Run 53.1 0.6
Plum Run 5.2 <0.1
Minor tributaries &
immediate drainage - 9.0 0.1
Totals 67.3 0.7
2. Outlet -
Sterling Run 68.1** 0.7
C. Precipitation***:
1. Year of sampling: 127.5 centimeters.
2. Mean annual: 111.0 centimeters.
t Table of metric conversions—Appendix B.
tt Youger, 1975.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
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5
III. LAKE WATER QUALITY SUMMARY
Lake Grant was sampled two times during the open-water season
of 1973 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from two
stations on the lake and usually from two or more depths at each
station (see map, page v). During each visit, a single depth-integrated
(4.6 m or near bottom to surface) sample was composited from the stations
for phytoplankton identification and enumeration; and a depth-integrated
sample was collected from each of the stations for chlorophyll a_ analysis.
The maximum depths sampled were 5.5 meters at station 1 and 6.4 meters
at station 2.
The lake sampling results are presented in full in Appendix D and
are summarized in the following table.
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A. SUMMARY OF PHYSICAL ANt> CHEMICAL CHARACTERISTICS FOR GRANT LAKE
STORET CODE 3912
PARAMETER
DISS OXY
CNIKTVY (MCHOMOI
PH (STAND UN1TSI
TOT ALK (M6/LI
TOT P
ORTHU P (MG/L>
N02»N03 (MO/L)
AMMONIA IMG/LI
KJEL N (MG/L)
1NORG N (MG/Lt
TOTAL N IMG/LI
CHLRPYL A IU&/LI
SECCWI
1ST SAMPLING ( 8/ 1/731
2 SITES
SAMPLING <10/ 9/73)
2 SITES
3RD SAMPLING ««»/•«/»•)
0 SITES
RANGE MEAN MEDIAN
3.9
7»3 " 7.7 7*5 7.4
0*019 - 0*045 0*030 0.029
U71Q - 2.120 1.970 2*025
RANGE MEAN MEDIAN
173* - 166* 177* 175.
7.1 - fl.6 7*7 7*5
0*020 -0*033 0<025 0*024
1.560 - UHSO 1.700 1.695
n.i fi- 1 n. i (!-•»
RANGE MEAN MEDIA)
»»*«*« _*«»4lt
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
08/01/73
10/09/73
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Melosira s£.
Stephanodiscus sp.
Nitzschia sp.
Trachelomonas sp.
Cryptomonas sp.
Other genera
Total
Oscillatori a ip.
Melosira sp.
Centric diatoms
Pennate diatoms
Flagellates
Other genera
Algal Units
per ml
5,415
4,459
1,384
590
670
2,692
15,110
22,091
16,300
14,584'
10,938
9,008
33,674
2. rhlorophyll a. -
Total
106,595
Sampling
Date
08/01/73
10/09/73
Station
Number
01
02
01
02
Chlorophyll
(ug/1)
46.7
45.2
100.6
46.7
a_
Limiting Nutrient Study:
An algal assay sample was not collected since Lake Grant
was not sampled in the spring. However, the lake data
indicate phosphorus limitation in August and October; i.e.,
the mean inorganic nitrogen/orthophosphorus ratios were 33/1
and 16/1, respectively, and phosphorus limitation would be
expected.
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8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Ohio National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the high
runoff months of March and April when two samples were collected.
Sampling was begun in May, 1973, and was completed in April, 1974.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Ohio District Office of the U.S. Geological Survey for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads shown are
those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the the nutrient loads,
in kg/km2/year, at station B-l and multiplying by the ZZ area in km2.
The Village of Mount Orab did not participate in the sampling
program, and nutrient loads were estimated at 1.134 kg P and 3.401 kg
N/capita/year.
* See Working Paper No. 175.
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A. Waste Sources:
1. Known municipal* -
Name
Pop.
Served
Mean Flow Receiving
Treatment (m3/d) Hater
494.3** Sterling Run
Mount Grab 1,306 ext. aer.
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
Source
a. Tributaries (non-point load) -
Sterling Run
Plum Run
b. Minor tributaries & immediate
drainage (non-point load) -
c. Known municipal STP's -
Mount Grab
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation*** -
Total
2. Outputs -
Lake outlet - Sterling Run
kg P/
yr
3,890
395
685
1,480
5
6,465
5,480
3. Net annual P accumulation - 985 kg.
* Anonymous, 1971.
** Estimated at 0.3785 m3/capita/day.
*** See Working Paper No. 175.
% of
total
60.2
6.1
10.6
22.9
0.2
100.0
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Sterling Run 29,610 68.5
Plum Run 3,055 7.1
b. Minor tributaries & immediate
drainage {non-point load) - 5,290 12.2
c. Known municipal STP's -
Mount Orab 4,440 10.3
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 820 1.9
Total 43,215 100.0
2. Outputs -
Lake outlet - Sterling Run 52,300
3. Net annual N loss - 9,085 kg.
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Sterling Run 73 558
Plum Run 76 588
* See Working Paper No. 175.
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11
E. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Essentially, his "dangerous" loading is
one at which the receiving water would become eutrophic or
remain eutrophic; his "permissible" loading is that which
would result in the receiving water remaining oligotrophic
or becoming oligotrophic if morphometry permitted. A meso-
trophic loading would be considered one between "dangerous"
and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/m2/yr 8.51 1.30 56.9 loss*
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Grant:
"Dangerous" (eutrophic loading) 1.04
"Permissible" (oligotrophic loading) 0.52
* There was an apparent loss of nitrogen during the sampling year. This
may have been due to nitrogen fixation in the lake, solubilization of
previously sedimented nitrogen, recharge with nitrogen-rich ground water,
unknown and unsampled point sources discharging directly to the lake, or
underestimation of .the nitrogen loads from the Mount Grab STP. Whatever
the cause, a similar nitrogen loss has occurred at Shagawa Lake, Minnesota,
which has been intensively studied by EPA's National Eutrophication and
Lake Restoration Branch (Malueg et al., 1975).
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12
LITERATURE REVIEWED
Anonymous, 1971. Inventory of municipal waste facilities. EPA
Publ. OWP-1, vol. 5, Wash., DC.
Malueg, Kenneth W., D. Phillips Larsen, Donald W. Schults, and
Howard T. Mercier; 1975. A six-year water, phosphorus, and
nitrogen budget for Shagawa Lake, Minnesota. Jour. Environ.
Qual., vol. 4, no. 2, pp. 236-242.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
Youger, John, 1975. Personal communication (lake morphometry). OH
Env. Prot. Agency, Columbus.
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VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
3901 8EACH CITY RESERVOIR
3902 BUCKEYE LAKE
3905 CHARLES MILL RESERVOIR
3906 DEER CREEK RESERVOIR
3907 DELAWARE RESERVOIR
3908 OILLION RESERVOIR
3912 GRANT LAKE
3914 HOOVER RESERVOIR
3915 INDIAN LAKE
3917 LORAMIE LAKE
3921 MOSQUITO CREEK RESERVOIR
3924 PLEASANT HILL LAKE
3927 LAKE SAINT MARYb
3928 ATWOOD RESERVOIR
3929 BERLIN RESEHVOIri
3930 HOLIDAY LAKE
3931 O'SHAUGNESSr
3932 ROCKY FORK LAKE
3933 SHArfNEE LAKE
3934 TAPPAN LAKE
MEDIAN
TOTAL P
0.122
0.179
0.127
0.098
0.086
0.163
0.113
0.040
0.120
0.185
0.038
0.036
0.148
0.031
0.042
0.125
0.203
0.067
0.069
0.040
MEDIAN
INORG N
1.990
0.380
0.465
2.980
2.340
1.590
0.570
1.640
0.380
1.380
0.150
0.455
0.200
0.205
0.900
0.575
3.070
0.790
2.380
0.230
500-
MEAN SEC
489.000
490.000
4B2.555
470.125
4H4.1H
481.250
486,333
462.750
485.222
494.000
465.333
456.833
484.167
462.000
465.435
465.333
479.333
473.000
474.333
466.111
MEAN
CHLOKA
10.867
186.567
67.144
9.887
10.856
27.400
40.533
13.017
76.855
104.100
36.267
22.850
79.150
16.442
15.496
55.350
5.522
38.022
39.567
37.711
15-
MIN 00
11.600
9.600
15.000
13.900
14.500
14.300
12.200
14.800
14.200
8.200
11.600
14.700
a. 200
14.700
13.600
15.000
14.900
IS. 000
15.000
15.000
MEDIAN
DISS ORTHO P
0.015
0.020
0.011
0.036
0.024
0.037
0.019
0.008
0.012
0.019
0.006
0.010
0.014
O.OOS
0.006
0.034
0.159
0.010
0.009
0.007
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PERCENT OF LAKES WITH HIGHER VALUES 7 DELAWARE rtESE-
( 0)
< 131
( 121
( 161
MEDIAN
INOrio N
21 (
76 (
63 1
5 <
16 (
32 (
SB (
26 (
76 (
37 (
100 (
6fl (
95 (
d9 (
<.2 I
53 (
0 (
*»7 (
11 <
a<* (
<•)
14)
12)
1)
3)
6)
11)
5)
U)
7)
19)
13)
18)
17)
6)
10)
0)
9)
2)
16)
500-
MEAN SEC
11
S
37
63
J2
42
16
89
21
0
82
100
26
95
74
b2
47
58
53
68
( 2)
I 1)
( 7)
( 12)
( 6)
I 8)
< 3)
( 17)
( 4)
( 0)
( 15)
( 19)
( 5)
( 18)
( 14)
< Ib)
( 9)
( 11)
( 10)
( 13)
MEAN
CHLOrU
84
0
21
95
89
58
32
79
J6
5
S3
63
11
66
74
26
100
42
37
47
( 16)
( 0>
( 4)
( 18)
( 17)
< ID
< 6)
( 15)
( 3)
( 1)
I 101
( 12)
( 2)
( 13)
( 14)
< b)
( 19)
( 8)
( 7)
( 9)
Ib-
MlS DO
82 (
89 (
11 (
63 (
47 (
S3 (
74 (
32 (
SB (
97 (
82 (
39 (
97 t
39 (
66 (
11 (
26 (
11 (
11 (
11 (
15)
17)
0)
12)
9)
10)
14)
6)
11)
18)
Ib)
7)
18)
7)
13)
0)
5)
0)
0)
0)
MEDIAN
DISS OrfTHU P
42 t
26 <
58 (
11 (
21 (
5 (
34 (
79 (
53 (
34 (
92 (
66 <
47 (
100 (
92 <
16 <
0 (
66 (
74 (
84 <
8)
5)
11)
2)
4)
1)
6)
15)
10)
6)
17)
12)
9)
19)
17)
3)
0)
12)
14)
16)
INDEX
NU
277
207
216
290
263
206
261
392
266
178
483
431
297
491
429
220
173
292
249
3al
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LAKES RANKED BY INDEX iNOS.
RAN* LAKE. CODE LAKE NAME
1 392d
2 3921
3 3924
4 3929
5 3914
6 3934
7 3927
a 3^32
9 3906
10 3901
11 3915
12 3907
13 3-J12
14 3^33
15 3930
16 390S
17 3902
18 390B
19 3917
20 3931
INDEX NO
MOSUU1TO CHtEK RESERVOIR
PLEASANT HILL LAKE
dEHLlN RESERVOIR
HOOVER RESERVOIR
TAPPAN LAKE
LA*E SAINT MARYS
HOCKY FOKK LAKE.
DEER CPEEK «ESE«VOIR
BEACH CITV KfcSERVOIR
INDIAN LAnt
DELAWARE RESERVOIR
GRANT LAKE
SHArfNtE LAKt
HOLIDAY LAKE
CHARLtS MILL RESE«VOI«
HUCKEYE LAKE
UILLION RESEKVOICi
LORAMIE LAKE
O'ShAUGNESSY RESERVOIK
483
431
429
392
381
297
292
290
277
?66
263
261
?49
220
216
207
206
178
173
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APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
-4
Cubic meters x 8.107 x 10 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR OHIO
03/09/76
LAKE CODE 3912 GHANT LAKE
SUB-DRAINAGE
TRIBUTARY AREA
-------
TRIBUTARY FLOW INFORMATION FOR OHIO
03/09/76
LAKE CODE 3912
GRANT LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS>
TRIBUTARY
3912B1
3912ZZ
MONTH YEAH
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
73
73
73
73
73
73
73
73
74
74
74
74
73
73
73
73
73
73
73
73
74
74
74
74
MEAN FLOW DAY
0.06
0.07
0.1?
0.02
0.00
0.03
0.15
0.12
0.18
0.06
0.15
0.12
0.11
0.14
0.22
0.04
0.00
0.06
0.28
0.24
0.34
0.11
0.28
0.23
5
9
8
18
15
13
18
15
19
22
8
3
FLOW DAY
0.03
0.02
0.01
0.01
0.0
0.01
0.02
0.06
0.71
0.16
0.10 16
0.21 20
FLOW JAY
FLOW
0.59
0.02
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APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/01/02
391201
39 00 52.0 063 55 48.0
GHANT LAKE
39 OHIO
DATE TIME DEPTH
FROM Of
TO DAY FEET
73/08/01 1* 00 0000
14 00 0003
73/10/09 15 00 0000
00010
WATER
TEMP
CENT
25.8
25.6
21.2
3.9
9.2
11EPALES
3
2111202
0022 FEET
DEPTH
00300 00077
DO THANSP Q
SECCHI FIELD
MG/L INCHES Ml
14
12
94
;Tvr
i
MHO
240
244
186
00400
PH
SU
7.40
7. SO
8.60
00410
T ALK
CAC03
MG/L
66
73
54
00610
NH3-N
TOTAL
MG/L
0.420
0.490
0.090
00625
TOT KJEL
N
MG/L
1.600
1.700
1.600
00630
N02&N03
N-TOTAL
MG/L
0.490
0.420
0.040
00671
PHOS-OIS
ORTHO
MG/L P
0.045
0.038
0.020
0066S 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/08/01 14 00 0000 0.257 46.7
14 00 0003 0.240
73/10/09 15 00 0000 0.209 100.6
-------
STORET RETRIEVAL DATE 76/01/02
391202
38 59 49.0 083 55 52.0
GRANT LAKE
39 OHIO
UEPALES 2111202
3 0025 FEET
DATE
FROM
TO
73/08/01
73/10/09
DATE
FROM
TO
73/08/01
73/10/09
TIME
OF
DAY
14
14
15
15
15
20
?0
10
10
10
TIME
OF
DAY
14
14
15
15
15
20
20
10
to
10
DEPTH
FEET
0000
0007
0000
0005
0011
DEPTH
FEET
0000
0007
0000
0005
0011
00010
HATER
TEMP
CENT
25.5
25.2
20.5
20.4
20.4
00665
PHOS-TOT
MG/L P
0. 127
0.113
0.200
0.1S9
0.227
00300
DO
MG/L
4.6
2.8
2.8
32217
CHLPPHYL
A
UG/L
45.2
46.7
00077 00094
TRANSP CNOUCTVY
SECCHI FIELD
INCHES MICROMHO
18 204
204
12 175
173
174
00400 00410 00610
PH T ALK NH3-N
CAC03 TOTAL
SU MG/L MG/L
7.70 55 0.260
7.30 55 0.340
7.80 52 0.200
7.30 54 0.350
7.10 56 0.450
DEPTH
00625
TOT
N
KJEL
MG/L
1
0
1
1
1
.200
.900
.700
.600
.400
00630
N02&N03
N-TOTAL
MG/L
0.760
0.610
0.150
0.1SO
0.160
00671
PHOS-DIS
ORTHO
MG/L P
0.019
0.020
0.026
0.033
0.022
-------
APPENDIX E
TRIBUTARY DATA
-------
STORE! RETRIEVAL DATE 75/03/03
3912A1
39 01 42.0 083 56 17.0
STERLING RUN
39119 7.S MF OKAti
1/GHANT LAKE
HrfY 74 BRDG IN MOUNT OKAB
11EPALES 2111204
4 0000 KtET
DEPTH
UAFE.
FKOM
TO
73/05/05
73/06/09
73/U7/03
73/UH/1H
73/09/15
73/10/LJ
73/ll/lH
73/1^/lt,
74/UI/19
7W02/22
74/03/Ob
74/03/04
74/04/03
74/04/20
00630 00625
TIME DEPTH N02&N03 TUT KJEL
OF N-TOTAL N
DAY FtET
06
10
08
08
OB
U9
11
10
08
08
13
08
17
09
45
30
45
45
35
10
30
10
55
30
00
50
45
00
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
33o
450
5bO
260
200
075
470
570
840
520
276
3b2
252
232
MG/L
1
1
2
0
0
1
1
0
1
4
1
1
1
0
.320
.200
.100
.735
.720
,450
.000
.BOO
.100
.800
.500
.700
.300
.^00
00610 00671 00665
NH3-N PHUS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.048
.078
.100
.056
.063
.087
.036
.104
.04B
.120
.055
.050
.030
.015
MG/L
0*
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
052
044
069
063
050
066
112
076
055
050
060
060
055
010
MG/L P
O.ldO
0.145
0.185
u.125
0.160
0.200
0.260
0.1V5
0.2
-------
STORET RETRIEVAL DATE 75/03/03
3912A2
38 59 47.0 08J 55 44.0
STEALING rtUN
39 7.5 HAMMERSVILLE
0/GtfANT LAKE
bT HWY 774 BROG b END OF LAKE
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FKOM
TO
7j/0r>/05
73/Ob/09
73/07/08
73/08/l«
73/09/lb
73/U/13
73/11/1B
73/12/15
7^/01/19
7WU2/22
74/U3/OH
74/03/16
7
-------
KETR1EVAL DATE 75/02/03
3912B1
J9 00 45.0 083 55 17.0
PLUM CREEK
39 7.5 MT GRAB
T/GRANT LAKE
PLEASANT HILL RO BROG
11EPALES 2111204
4 0000 FtET
DEPTH
DATE
FROM
TO
73/05/05
73/06/09
73/Od/18
73/09/15
73/10/13
7J/11/18
73/12/15
74/01/19
7<+/02/22
74/03/OH
74/03/16
7<*/u<+/03
74/0<+/20
00630 00625
TIME DEPTH N02t>N03 TOT KJEL
OF M-TOTAL N
DAY FEET
09
10
09
09
09
12
10
09
------- |