U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
GANTTU\KE
COVINGTON COUNTY
ALABAW
EPA REGION IV
WORKING PAPER No, 227
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
. 699-440
-------
REPORT
ON
GANTTLAKE
COVINGTON COUNTY
ALABAMA
EPA REGION IV
WORKING PAPER No, 227
WITH THE COOPERATION OF THE
ALABAMA WATER IMPROVEMENT COMMISSION
AND THE
ALABAMA NATIONAL GUARD
JULY 1976
-------
CONTENTS
Foreword i i
List of Study Lakes - Alabama iv
Lake and Drainage Area Map v
Sections
I. Conclusions !
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 6
IV. Nutrient Loadings 1]
V. Literature Reviewed 15
VI. Appendices 16
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ii
FOREWORD
The National Eutrophicatlon Survey was Initiated 1n 1972 1n
response to an Administration commitment to Investigate the nation-
wide threat of accelerated eutrophlcatlon to freshwater lakes and
reservoi r-s.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concen-
trations, 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 nonpoint source pollution abatement 1n lake water-
sheds.
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
watershed 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)L clean lakes [§314(a,bj], and water quality monitoring
[§106 and §305(b)] activities mandated by the Federal Water
Pollution Control Act Amendments of 1972.
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iii
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condition
are being made to advance the rationale and data base for refine-
ment of nutrient water quality criteria for the Nation's freshwater
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 the U.S. Environmental Protection
Agency and to augment plans implementation by the states.
ACKNOWLEDGEMENTS
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Alabama Water Improvement
Commission for professional involvement and to the Alabama National
Guard for conducting the tributary sampling phase of the Survey.
E. John Williford, Chief, Surveillance and Monitoring Section;
and John C. Chitwood, Biologist, Surveillance and Monitoring Section;
and Sam L. Coleman, Water Quality Planning Section; and M. H. Floyd,
Engineer, Surveillance and Monitoring Section; and Truman Green,
Engineer, Municipal Waste Control Section; and Tim McCartha, Biologist,
Surveillance and Monitoring Section; and James E. Mclndoe, Engineer,
Water Quality Planning Section; and Richard T. Maddox, Engineer,
Industrial Waste Control Section; and James T. White, Engineer,
Municipal Waste Control Section provided invaluable lake docu-
mentation and counsel during the course of the Survey.
Major General Charles A. Rollo, Adjutant General of Alabama,
and Project Officer Lt. Col. Wash B. Ray, who directed the volun-
teer efforts of the Alabama National Guardsmen, are also gratefully
acknowledged for their assistance to the Survey.
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NATIONAL EUTROPHI CATION SURVEY
STUDY LAKES
STATE OF ALABAMA
LAKE NAME
Bankhead
Gantt
Guntersville
Holt Lock and Dam
Lay
Martin
Mitchell
Pickwick
Purdy
Weiss
Wilson
COUNTY
Walker
Covington
Marshall, Johnson
Tuscaloosa
Chi 1 ton, Coosa
Elmore, Tallapoosa
Coosa, Chilton
Colbert, Lauderdale
(Tishomingo in MS
and Hardin in TN)
Jefferson, Shelby
Cherokee
Lauderdale, Colbert,
Lawrence
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86'15'
Map Location
CRENSHAW CO.
"COVINGTON CO.
G-4A/77'
HESERVOI
dam
|BULLOCK CO.
PIKE CO.
3200
GANTT RESERVOIR
® Tributary Sampling Site
X Lake Sampling Site
/~ Direct Drainage Area Boundary
o s ip is 20 25 Km.
o 5 10 15 Mi.
Scale
3130-
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GANTT RESERVOIR, ALABAMA
STORE! NO. 0103
I. CONCLUSIONS
A. 'Trophic Condition:*
Survey data indicate Gantt Reservoir is mesotrophic-
eutrophic. The lake is characterized by low Secchi disc
transparency and chlorophyll ^values, and low potential
for primary productivity as measured by algal assay control
yields. Oxygen depression occurred below 4.6 m during
August sampling of the lake.
Nutrient concentrations in the reservoir were
moderately low, with total phosphorus not exceeding
0.054 mg/liter and inorganic nitrogen not exceeding
0.410 mg/liter in any of the samples. The increase in
total phosphorus values during June sampling is probably
a result of spring flooding, which would increase the
levels of inorganic phosphorus in the water.
B. Rate-Limiting Nutrient:
Algal assay results indicate Gantt Reservoir was
initially limited by phosphorus at the time of sample
collection, but became nitrogen limited at higher phosphorus
concentrations. Additions of nitrogen alone did not
*See Appendix E.
-------
stimulate a growth response. The ratios of available inor-
ganic nitrogen to orthophosphorus (N/P) in sampled waters
(51/1, 33/1, and 22/1 for spring, summer, and fall sampling,
respectively) were generally consistent with phosphorus limi-
tation.
C. Nutrient Controllability:
1. Point sources -
There were no known point sources impacting Gantt
Reservoir during the sampling year. The present loading
rate of 2.68 g P/m2/yr is about twice that proposed by
Vollenweider (1975) as a eutrophic rate. However, load-
ing calculations based upon available nutrient concentra-
tions and flow data yield a net export of both nitrogen
and phosphorus from the reservoir, suggesting sampling was
not adequate to depict actual loading and export rates.
The A(2) inlet sampling site was approximately 8.0 km
north of the actual lake inlet. Nutrient loading from
the watershed surrounding that reach of Conecuh River
has been omitted from lake loading calculations. The
export could also be attributed to undetected discharges
reaching the lake from unknown industrial or municipal
sources.
-------
Point sources from the cities of Union Springs and
Troy are known to impact the Conecuh River upstream from
Gantt Reservoir. These sources are not included in this
report in the Gantt Reservoir nutrient budget due to their
distance from the lake. However, it is expected that the
high background loading (page 14) for the Conecuh River
is due in part to unmeasured contributions from these
sources.
2. Nonpoint sources -
The mean annual phosphorus loads from the three
gaged tributaries amounted to 97.2% of the total load
reaching the lake. The estimated phosphorus load from the
ungaged drainage areas amounted to 2.1% of the total load.
Additional sampling and an evaluation of current land
use and lakeshore construction are required before a nutri-
ent budget for the lake can be determined.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake surface area and mean depth were provided by the Alabama
Water Improvement Commission; maximum depth was estimated on
the basis of National Eutrophication Survey (NES) sampling data;
tributary flow data were provided by the Alabama District Office
of the U.S. Geological Survey (USGS)(outlet drainage area includes
the lake surface area). Mean hydraulic retention time was
obtained by dividing the lake volume by mean flow of the outlet.
Precipitation values were estimated by methods as outlined in
NES Working Paper No. 175. A table of metric/English conversions
is included as Appendix A.
A. Lake Morphometry:
1. Surface area: 11.20 km2.
2. Mean depth: 1.4 meters.
3. Maximum depth: 10.7 meters.
4. Volume: 15.630 x 106 m3.
5. Mean hydraulic retention time: 7 days.
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B. Tributary and Outlet (see Appendix B for flow data):
1 . Tributaries -
Drainage Mean flow
•Name area (km?) (m
A(2) Conecuh River 1,489.2 21.52
B(l) Big Creek 25.9 0.19
C(l) Feagin Creek 45.3 0.49
Minor tributaries and
immediate drainage - 104.1 . 2.01
Totals 1,664.5 24.21
2. Outlet - A(l) Conecuh River 1,675.7 27.56
C. Precipitation:
1. Year of sampling: 179.2 cm.
2. Mean annual: 146.4 cm.
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III. LAKE WATER QUALITY SUMMARY
Gantt Reservoir was sampled three 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 three stations on the lake and from a number
of depths at each station (see map, page v). During each visit,
depth-integrated samples were collected from each station for
chlorophyll a_ analysis and phytoplankton identification and
enumeration. During the first visit, a single 18.9-liter
depth-integrated sample was composited for algal assays. Maxi-
mum depths sampled were 3.4 m at Station 1, 4.6 m at Station 2,
and 8.8 m at Station 3. For a more detailed explanation of
NES methods, see NES Working Paper No. 175.
The results obtained are presented in full in Appendix C
and are summarized in III-A for waters at the surface and at
the maximum depth for each site. Results of the phytoplankton
counts and chlorophyll ^determinations are included in III-B.
Results of the limiting nutrient study are presented in III-C.
-------
GANTT RESERVOIR
STORE! CODE 0103
PHYSICAL AND CHEMICAL CHARACTERISTICS
PARAMETER
N»
( 6/19/73 )
S««» = 3
RANGE MEDIAN
MAX
DEPTH
RANGE
(METERS)
N»
( 8/30/73 )
S««» = 3
RANGE MEDIAN
MAX
DEPTH
RANGE
(METERS)
N»
( ll/ 3/73 )
S«»» = 3
RANGE MEDIAN
MAX
DEPTH
RANGE
(METERS)
TEMPERATURE (DEG CENT)
0.-1.5 M DEPTH
MAX DEPTH""
DISSOLVED OXYGEN
0.-1.5 M DEPTH
MAX DEPTH""
it
3 .
(MG/L)
1
3
35.6- 28.8
25.2- 25.8
5.4- 5.4
3.2- 5.4
27.7
25.6
5.4
5.0
0.0-
1.2-
1.2-
1.2-
1.2
8.8
1.2
8.8
5
3
3
3
29.2- 31.1
27.5- 28.3
5.0- 6.0
1.0- 6.6
30.2
28.2
5.4
2.6
0.0-
1.8-
0.0-
1.8-
1.5
7.6
1.5
7.6
6
3
3
3
16.8- 21.4
15.9- 19.0
8.0- 8.6
8.4- 9.0
ia.9
17.9
8.2
8.6
0.0- 1.5
3.0- 7.6
1.5- 1.5
3.0- 7.6
CONDUCTIVITY (UMHOS)
0.-1.5 M DEPTH
MAX DEPTH"'
4
3
45.- 47.
40.- 48.
46.
47.
0.0-
1.2-
1.2
8.8
5
3
60.- 70.
68.- 73.
63.
70.
0.0-
1.8-
1.5
7.6
6
3
64.- 87.
64.- 87.
68.
69.
0.0- 1.5
3.0- 7.6
PH (STANDARD UNITS)
0.-1.5 M DEPTH
MAX DEPTH""
TOTAL ALKALINITY
0.-1.5 M DEPTH
MAX DEPTH"0
TOTAL P (MG/L)
0.-1.5 M DEPTH
MAX DEPTH*"
DISSOLVED ORTHO P
0.-1.5 M DEPTH
MAX DEPTH"*
N02*N03 (MG/L)
0.-1.5 M DEPTH
MAX DEPTH""
AMMONIA (MG/L)
0.-1.5 M DEPTH
MAX DEPTH""
KJELDAHL N (MG/L)
0.-1.5 M DEPTH
MAX DEPTH""
4
3
(MG/L)
4
3
4
3
(MG/L)
4
3
4
3
4
3
4
3
6.8- 6.9
6.7- 6.8
19.- 33.
17.- 20.
0.045-0.052
0.049-0.054
0.005-0.012
0.005-0.006
O.ldO-0.200
0.200-0.200
0.140-0.190
0.140-0.210
0.400-0.600
0. 400-0. 400
6.8
6.8
20.
20.
0.047
0.049
0.008
0.006
0.195
0.200
0.160
0.170
0.550
0.400
0.0-
1.2-
0.0-
1.2-
0.0-
1.2-
0.0-
1.2-
0.0-
1.2-
0.0-
1.2-
0.0-
1.2-
1.2
8.8
1.2
8.8
1.2
8.8
1.2
8.8
1.2
8.8
1.2
8.8
1.2
8.8
5
3
5
3
5
3
5
3
5
3
5
3
5
3
7.3- 8.0
7.1- 7.8
17.- 24.
18.- 25.
0.022-0.027
0.025-0.029
0.007-0.010
0.006-0.013
0. 110-0. 180
0.090-0.160
0.120-0.180
0.100-0.300
0.400-0.700
0.300-0.600
7.6
7.4
20.
23.
0.023
0.027
0.009
0.008
0.130
0.130
0.130
0.200
0.500
0.400
0.0-
1.8-
0.0-
1.8-
0.0-
1.8-
0.0-
1.8-
0.0-
1.8-
0.0-
1.8-
0.0-
1.8-
1.5
7.6
1.5
7.6
1.5
7.6
1.5
7.6
1.5
7.6
1.5
7.6
1.5
7.6
6
3
6
3
6
3
6
3
6
3
6
3
6
3
7.3- 7.8
7.3- 7.7
22.- 34.
23.- 37.
0.016-0.032
0.019-0.037
0.007-0.014
0.008-0.010
0.120-0.250
0.130-0.280
0.040-0.070
0.040-0.060
0.200-1.000
0.200-0.200
7.5
7.5
26.
28.
0.020
0.029
o.ooa
0.009
0.150
0.140
0.050
0.050
0.300
0.200
0.0- 1.5
3.0- 7.6
0.0- 1.5
3.0- 7.6
0.0- 1.5
3.0- 7.6
0.0- 1.5
3.0- 7.6
0.0- 1.5
3.0- 7.6
0.0- 1.5
3.0- 7.6
"
0.0- 1.5
3.0- 7.6
SECCHI DISC (METERS)
0.5- 0.6
0.5
0.8- 1.0
0.9
0.9- 1.5 1.2
" N = NO. OF SAMPLES
«» MAXIMUM DEPTH SAMPLED AT EACH SITE
»»» S = NO. OF SITES SAMPLED ON THIS DATE
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B. Biological Characteristics:
1• Phytoplankton -
Sampling
Date
06/19/73
08/30/73
11/03/73
Algal
Dominant Units
Genera per ml
1. Flagellates 170
2. Di no-flagellates 58
3. Melosira 25
4. Pennate diatom 25
5. Oscillatoria 17
Other genera 104
Total 399
1. Flagellates 56
2. Lyngbya 41
3. Oscillatoria 32
4. Dactylococcopsis 24
5. Nitzschia 16
Other genera 67
Total 236
1. Flagellates 350
2. Dactylococcopsis 110
3. Centric diatom 46
4. Nitzschia 46
5. Oscillatoria 37
Other genera 92
Total 681
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2. Chlorophyll a_ -
Sampling
Date
Station
Number
Chlorophyll a_
(ug/liter)
06/19/73
08/30/73
11/03/73
C. Limiting Nutrient Study:
1
2
3
1
2
3
1
2
3
2.7
2.4
2.1
3.0
1.7
4.0
0.9
1.1
1.4
1. Autoclaved, filtered, and nutrient spiked -
Inorganic N
ConcT(mg/1)
0.104
0.104
0.104
0.104
0.604
1.104
1.104
2. Filtered and nutrient spiked -
Ortho P
Spike(mg/l) Conc.(mg/l)
Control
0.010 P
0.020 P
0.050 P
0.025 P + 0.5 N
0.050 P + 1.0 N
1.0 N
0.008
0.018
0.028
0.058
0.033
0.058
0.008
Ortho P
Spikejmg/lJ Conc.(mg/l)
Control
0.010 P
0.020 P
0.050 P
0.025 P + 0.5 N
0.050 P + 1.0 N
1.0 N
0. 005
0.015
0.025
0.055
0.030
0.055
0.005
Inorganic N
Conc.(mg/l)
0.124
0.124
0.124
0.124
0.624
1.124
1.124
Maximum Yield
(mg/l-dry wt.)
0.1
1.4
2.6
2.5
10.2
20.8
0.1
Maximum Yield
(mg/l-dry wt.)
0.1
2.0
3.1
3.3
11.3
21.6
0.1
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10
3. Discussion -
The control yield of the assay alga, Selenastrum
capricornutum, indicates that the potential for primary
production in Gantt Reservoir was low at the time of
sample analysis. An increase in yield with increased
levels of orthophosphate (to about 0.028 mg/1) as well
as a lack of response when only nitrogen was added
indicates phosphorus limitation. Maximum growth response
was achieved with the simultaneous.addition of both
phosphorus and nitrogen.
The N/P ratios in the field were greater than 22/1
on all three sampling occasions, further indicating
primary limitation by phosphorus in Gantt Reservoir
(an N/P ratio of 14/1 or greater generally reflects
phosphorus limitation).
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11
IV. NUTRIENT LOADINGS
(See Appendix D for data)
. For the determination of nutrient loadings, the Alabama
National Guard collected monthly near-surface grab samples
from each of the tributary sites indicated (see map), except
for the high runoff months of January and February when two
samples were collected. Sampling was begun in March 1973,
and was completed in February 1974.
Through an interagency agreement, stream flow estimates
for the year of sampling and a "normalized" or average year
were provided by the Alabama District Office of USGS for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries
were determined by using a modification of a USGS computer
program for calculating stream loadings. Nutrient loads
indicated for tributaries are those measured minus known
point source loads, if any.
Nutrient loadings for unsampled "minor tributaries
and immediate drainage" ("ZZ" of USGS) were estimated by
using the mean annual nutrient loads, in kg/km2/yr, for
Big Creek and Feagin Creek at Stations B(l) and C(l),
respectively, and multiplying the means by the ZZ drainage
o
area in kmS
-------
12
A. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kg P/yr total
a. Tributaries (nonpoint load) -
A(2) Conecuh River 28,625 95.5
B(l) Big Creek 105 0.3
C(l) Feagin Creek 405 1.4
b. Minor tributaries and immediate
drainage (nonpoint load) - 625 2.1
c. Known municipal STP's - None
d. Septic tanks* - 20 0.1
e. Known industrial - None
f. Direct precipitation** - 195 0.6
Totals 29,975 100.0
2. Outputs - A(l) Conecuh River 32,250
3. Net annual P export*** 2,275
*Estimate based on 70 lakeshore residences.
**Estimated (see NES Working Paper No. 175).
***Export probably due to unknown sources and/or sampling error.
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13
B. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source kg N/yr total
-a. Tributaries (nonpoint load) -
A(2) Conecuh River 673,175 93.1
B(l) Big Creek 4,615 0.6
C(l) Feagin Creek 10,675 1.5
b. Minor tributaries and immediate
drainage (nonpoint load) - 21,550 3.0
c. Known municipal STP's - None
d. Septic tanks* - 745 0.1
e. Known industrial - None
f. Direct precipitation** - 12,090 1.7
Totals 722,850 100.0
2. Outputs - A(l) Conecuh River 765,985
3. Net annual N export*** - 43,135
*Estimate based on 70 lakeshore residences.
**Estimated (see NES Working Paper No. 175).
***Export probably due to unknown sources and/or sampling error.
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14
C. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Conecuh River 19 452
Big Creek 4 178
Feagin Creek 9 236
D. Yearly Loadings:
In the following table, the existing phosphorus annual
loading is compared to the relationship proposed by Vollenweider
(1975). Essentially, his eutrophic loading is that at which
the receiving waters would become eutrophic or remain eutrophic;
his oligotrophic loading is that which would result in the
receiving water remaining oligotrophic or becoming oligotrophic
if morphometry permitted. A mesotrophic loading would be
considered one between eutrophic and oligotrophic.
Note that Vollenweider's model may not apply to lakes with
short hydraulic retention times or in which light penetration is
severely restricted by high concentrations of suspended solids
in the surface waters.
Total Yearly
Phosphorus Loading
(q/m2/yr)
Estimated loading for Gantt Reservoir • 2.68
Vollenweider's eutrophic loading 1.64
Vollenweider's oligotrophic loading 0.82
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15
V. LITERATURE REVIEWED
U.S. Environmental Protection Agency. 1975. National
Eutrophication Survey Methods 1973-1976. National
Eutrophication Survey Working Paper No. 175. National
Environmental Research Center, Las Vegas, Nevada, and
Pacific Northwest Environmental Research Laboratory,
Corvallis, Oregon.
Vollenweider, R. A., 1975. Input-Output Models With Final
Reference to the Phosphorus Loading Concept in Limnology.
Schweiz. Z. Hydrol. 37: 53-84.
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VI. APPENDICES
APPENDIX A
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 B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR ALABAMA
07/22/76
LAKE CODE 0103
GANTT RESERVOIR
TOTAL DRAINAGE AREA OF LAKEISQ KM) 1675.7
SUB-DRAINAGE
TRIBUTARY AREACSQ KM)
JAN
FEB
MAR
APR
MAY
NORMALIZED FLOWS(CMS)
JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
0103A1
0103A2
0103B1
0103C1
0103ZZ
1675.7
1489.2
25.9
45.3
115.3
38.79
30.02
0.221
0.57
2.32
39.36
36.81
0.269
0.71
2.75
60.88
48.14
0.396
0.96
3.62
49.84
41.06
0.311
0.79
3.00
23.50
20.67
0.161
0.42
1.81
14.16
9.63
0.130
0.34
1.53
18.12
12.03
0.139
0.40
1.64
22.37
10.90
0.116
0.31
1.39
12.88
9.49
0.105
0.28
1.30
9.49
6.80
0.082
0.23
1.05
18.69
11.89
0.142
0.40
1.67
23.22
21.80
0.193
0.51
2.10
27.55
21.52
0.188
0.49
2.01
SUMMARY
TOTAL DRAINAGE AREA OF LAKE
SUM OF SUB-DRAINAGE AREAS
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
1675.7
1675.7
TOTAL FLOW
TOTAL FLOW
IN
OUT
291.61
331.31
TRIBUTARY MONTH YEAR
0103A1
MEAN FLOW DAY
FLOW DAY
FLOW DAY
FLOW
0103A2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
64.846
141.584
35.396
32.564
8.778
10.902
5.522
4.446
6.088
16.282
41.059
58.191
56.917
126.010
31.149
28.317
7.504
9.571
4.672
3.851
5.239
14.017
36.246
50.970
4
2
2
5
9
6
4
12
6
3
7
6
4
2
2
5
9
6
4
12
6
3
7
6
2.888
252.869
71.925
2.945
2.690
2.945
3.653
1.388
3.398
8.920
37.378 21
46.723 14
22.512
342.634
82.119
17.556
5.805
8.778
5.097
3.295
3.087
7.646
32.564 21
41.059 14
60.881
67.960
53.802
59.465
-------
TRIBUTARY FLOW INFORMATION FOR ALABAMA
07/22/76
LAKE CODE 0103
GANTT RESERVOIR
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
010 3B1
0103C1
0103ZZ
3
4
5
6
7
8
9
10
11
12
1
?_
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
0.595
7.362
0.340
0.368
0.198
0.136
0.119
0.079
0.130
0.159
0.396
0.340
1.472
1.812
0.878
0.963
0.396
0.510
0.27?
0.221
0.340
0.425
0.991
0.850
5.182
6.286
3.370
3.568
.926
.586
.416
.019
.529
.812
3.681
3.256
4
2
2
5
9
6
4
12
6
3
7
6
4
2
2
5
9
6
4
12
6
3
7
6
4
2
2
5
9
6
4
12
6
3
7
6
FLOW DAY
FLOW DAY
FLOW
0.340
0.736
0.283
0.340
0.252
0.144
0.125
0.068
0.105
0.096
0.178
0.212
0.623
1.812
0.736
0.906
0.680
0.396
0.311
0.195
0.283
0.266
0.481
0.566
3.398
6.088
2.888
3.341
2.605
1.671
1.416
0.906
1.274
1.189
1.954
2.265
21
14
21
14
21
14
1.897
0.246
4.389
0.651
13.734
2.549
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 76/07/22
010301
31 27 00.0 086 26 20.0 3
GANTT RESERVOIR
01039 ALABAMA
033392
DATE
FROM
TO
73/06/19
73/08/30
73/11/03
DATE
FROM
TO
73/06/19
73/08/30
73/11/03
TIME DEPTH
OF
DAY FEET
15 15 0000
15 15 0004
12 48 0000
12 48 0006
12 00 0000
12 00 0005
12 00 0011
TIME DEPTH
OF
DAY FEET
15 15 0000
15 15 0004
12 48 0000
12 48 0006
12 00 0000
12 00 0005
12 00 0011
00010
WATER
TEMP
CENT
26.9
25.6
29.2
28.2
18.1
16.8
15.9
00665
PHOS-TOT
MG/L P
0.052
0.049
0.022
0.027
0.030
0.032
0.037
00300
DO
MG/L
5.4
6.0
6.6
8.6
8.4
32217
CHLRPHYL
A
UG/L
2.7
3.0
0.9
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
18 45
47
30 70
70
36 87
84
87
11EPALES 2111202
0008 FEET DEPTH CLASS 00
00400 00410 00610 00625
PH
T ALK NH3-N
CAC03 TOTAL
SO
6.80
6.80
8.00
7.80
7.50
7.60
7.70
MG/L MG/L
19 0
20 0
24 0
25 0
32 0
34 0
37 0
.180
.140
.120
.100
.070
.050
.060
TOT KJEL
N
MG/L
0
0
0
0
1
0
0
.600
.400
.700
.300
.000
.300
.200
00630
N02&N03
N-TOTAL
MG/L
0.200
0.200
0.180
0.160
0.170
0.250
0.280
00671
PHOS-DIS
ORTHO
MG/L P
0.012
0.005
0.007
0.013
0.011
0.014
0.010
-------
STORET RETRIEVAL DATE 76/07/22
010302
31 26 15.0 086 28 45.0 3
GANTT RESERVOIR
01039 ALABAMA
033392
DATE
FROM
TO
73/06/19
73/08/30
73/11/03
DATE
FROM
TO
73/06/19
73/08/30
73/11/03
TIME DEPTH
OF
DAY FEET
15 55 0000
15 55 0006
15 55 0014
13 10 0000
13 10 0005
13 10 0015
12 20 0000
12 20 0005
12 20 0010
TIME DEPTH
OF
DAY FEET
15 55 0000
15 55 0006
15 55 0014
13 10 0000
13 10 0005
13 10 0015
12 ?0 0000
12 20 0005
12 ?0 0010
00010
WATER
TEMP
CENT
28.5
27.0
25.8
31.1
29.8
28.3
19.6
18.4
17.9
00665
PHOS-TOT
MG/L P
0.045
0.045
0.054
0.026
0.023
0.029
0.021
0.019
0.029
00300
DO
MG/L
5.4
5.0
5.0
2.6
8.0
8.6
32217
CHLRPHYL
A
UG/L
2.4
1.7
1.1
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
18 46
46
40
38 61
60
68
48 68
66
69
,
11EPALES 2111202
0018 FEET DEPTH CLASS 00
00400 00410 00610 00625
PH
SU
6.90
6.90
6.80
7.80
7.60
7.40
7.70
7.80
7.50
T ALK
CAC03
MG/L
19
19
17
20
21
18
25
26
28
NH3-N
TOTAL
MG/L
0
0
0
0
0
0
0
0
0
.190
.140
.170
.120
.130
.200
.050
.050
.040
TOT KJEL
N
MG/L
0.500
0.300
0.400
0.500
0.400
0.400
0.500
0.300
0.200
00630
N02&N03
N-TOTAL
MG/L
0.190
0.180
0.200
0.160
0.110
0.130
0.230
0.130
0.140
00671
PHOS-OIS
ORTHO
MG/L P
0.006
0.006
0.006
0.009
0.010
0.008
0.009
0.008
0.009
-------
STORE! RETRIEVAL DATE 76/07/22
010303
31 21 50.0 086 30 50.0 3
GANTT RESERVOIR
01039 ALABAMA
033391
11EPALES
2111202
0033 FEET DEPTH CLASS
DATE
FROM
TO
73/06/19
73/08/30
73/11/03
DATE
FROM
TO
73/06/19
73/08/30
73/11/03
TIME DEPTH
OF
DAY FEET
16 15 0000
16 15 0006
16 15 0015
16 15 0022
16 15 0029
13 25 0000
13 ?5 0005
13 25 0015
13 25 0025
12 40 0000
12 40 0005
12 40 0015
12 40 0025
TIME DEPTH
OF
DAY FEET
16 15 0000
16 15 0006
16 15 0015
16 15 0022
16 15 0029
13 25 0000
13 25 0005
13 25 0015
13 25 0025
12 40 0000
12 40 0005
12 40 0015
12 40 0025
00010
WATER
TEMP
CENT
28.8
27.7
26.7
25.8
25.2
31.0
30.2
28.2
27.5
21.4
19.5
19.1
19.0
00665
PHOS-TOT
MG/L P
0.045
0.044
0.046
0.049
0.049
0.027
0.023
0.026
0.025
C.017
0.016
0.019
0.019
00300
DO
MG/L
6.4
4.4
4.0
3.2
5.4
1.4
1.0
8.2
7.0
9.0
32217
CHLRPHYL
A
UG/L
2.1
4.0
1.4
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
24 46
46
47
47
48
36 63
63
64
73
60 67
64
64
64
00400
PH
SU
6
6
6
6
6
7
7
7
7
7
7
7
7
.90
.90
.80
.80
.70
.40
.30
.20
.10
.30
.40
.30
.30
00410
T ALK
CAC03
MG/L
33
23
20
20
20
18
17
18
23
24
22
23
23
00610
NH3-N
TOTAL
MG/L
0.140
0.130
0.150
0.210
0.210
0.180
0.160
0.200
0.300
0.040
0.040
0.040
0.050
00
00625
TOT KJEL
N
MG/L
0.600
0.400
0.400
0.400
0.400
0.600
0.400
0.400
0.600
0.300
0.200
0.200
0.200
00630
N02&N03
N-TOTAL
MG/L
0.180
0.170
0.200
0.200
0.200
0.130
0.130
0.110
0.090
0.120
0.120
0.120
0.130
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.005
0.005
0.006
0.006
0.009
0.008
0.008
0.006
0.007
0.008
0.008
0.008
-------
APPENDIX D
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/07/22
0103A1 LS0103A1
31 24 00.0 086 29 00.0 4
CONECUH RIVER
01 MAP COVINGTON CO
0/GANTT LAKE (RESVR) 033392
US 29 BRUG SE EDGE OF VLG OF GANTT
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
73/03/04
73/04/02
73/05/02
73/06/05
73/07/09
73/08/06
73/09/04
73/10/12
73/11/06
73/12/03
74/01/07
74/01/21
74/02/06
74/02/14
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
OAY FEET
10
09
13
13
15
10
09
09
14
10
09
15
10
10
30
30
SO
45
20
45
00
15
15
00
30
30
00
30
MG/L
C
0
0
0
0
0
0
0
0
0
C
0
0
0
.091
.054
.069
.154
.096
.120
.050
.067
.100
.152
.116
.192
.080
.108
MG/L
0.
0.
1.
2.
1.
0.
0.
0.
0.
0.
0.
0.
0.
0.
340
980
380
200
400
380
540
400
650
400
700
200
400
400
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
032
240
068
168
130
096
136
054
038
0.036
0.
0.
0.
0.
040
056
045
030
MG/L P
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
008
013
012
018
013
010
005K
005K
005K
005
012
008
015
015
MG/L P
0.025
0.045
0.045
0.045
0.035
0.040
0.030
0.020
0.025
0.020
0.045
0.035
0.040
0.055
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/07/23
0103A2 L50103A2
31 29 30.0 086 21 30.0 4
CONECUH RIVER
01 MAP COVINGTON CO
1/GANTT LAKE (RESVR) 033392
CO HWY 77 BRDG .75 MI SE OFDOZIER
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
73/03/04
73/04/02
73/05/02
73/06/05
73/07/09
73/08/06
73/09/04
73/10/12
73/11/06
73/12/03
74/01/07
74/01/21
74/02/06
74/02/14
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
10
14
14
15
11
09
09
15
10
10
15
10
11
10
15
20
25
45
15
30
45
00
40
00
45
50
20
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.132
.075
.066
.168
.336
.270
.280
.250
.264
.116
.088
.140
.080
.048
MG/L
1.
1.
2.
0.
0.
0.
0.
0.
0.
1.
0.
0.
0.
000
150
100
690
800
360
270
550
400
400
500
400
500
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
9.
0.
0.
042
060
063
110
069
080
048
037
054
024
036
048
040
030
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
008
028
Oil
014
012
009
005K
008
008
012
012
012
015
015 ,
MG/L P
0.030
0.075
0.045
0.060
0.020
0.035
0.020
0.030
0.020
0.012
0.050
0.080
0.040
0.060
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/07/22
010361 LS0103B1
31 28 00.0 086 24 30.0 4
bIG CREEK
01 MAP COVINGTON CO
T/GANTT LAKE (RESVR) 033392
US 29 BRDG 6.5 MI NE OF GANTT
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
73/03/04
73/04/02
73/05/02
73/06/05
73/07/09
73/08/06
73/09/04
73/10/12
73/11/06
73/12/03
74/01/07
74/01/21
74/02/06
74/02/14
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
10
14
14
16
11
09
09
14
10
09
15
10
10
50
30
40
40
00
00
10
30
30
20
50
45
20
SO
MG/L
0
0
0
0
0
0
0
0
0
0
c
0
0
.160
.105
.130
.176
.160
.115
.132
.092
.152
.156
.208
.216
.208
MG/L
1.
0.
1.
2.
0.
0.
0.
0.
0.
0.
0.
0.
0.
500
800
470
000
260
350
320
300
300
500
350
100K
200
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
110
046
110
105
054
048
054
042
052
032
060
035
040
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
005K
005K
005K
006
005K
009
005K
005K
005K
005K
005K
005
005K
MG/L P
0.017
0.010
0.020
0.025
0.015
0.020
0.025
0.030
0.015
0.010
0.035
0.005
0.010
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/07/22
0103C1 L50103C1
31 25 00.0 086 26 30.0 4
FEAG1N CHEEK
01 MAP COVINGTON CO
T/GANTT LAKE (KESVR) 033392
XING OF HD HEAOIN NE OFF US29
HEPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
73/03/04
73/04/02
73/05/02
73/06/05
73/07/09
73/08/06
73/04/04
73/10/12
73/11/06
73/12/03
74/01/07
74/01/21
74/02/06
74/02/14
00630 00625
TIME DEPTH N02fcN03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
09
14
14
15
11
09
10
15
11
10
16
11
11
45
55
00
00
30
30
50
00
45
00
10
15
15
45
MG/L
0
3
0
C
0
0
0
. C
0
0
0
0
0
0
.168
.189
.180
.138
.16fl
.120
.092
.115
.067
.112
.200
.300
.224
.216
MG/L
0.
1.
0.
1.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
660
000
780
980
330
320
300
480
250
300
300
300
200
300
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
043
084
072
118
042
036
044
052
024
040
044
052
045
070
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0*
0.
P
005K
007
007
013
005K
012
005K
005K
005K
005K
005K
016
0.005
0.
005
MG/L P
0.020
0.025
0.025
0.055
0.022
0.02C
0.020
0.025
0.020
0.015
0.020
0.065
0.015
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
PARAMETRIC RANKINGS OF LAKES
SAMPLED BY NES IN 1974
STATE OF ALABAMA
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
0101 8ANKHEAD LAKE
0103 GANTT 3ESERVOI*
0104 GUNTERSVILLE RESERVOIR
0105 HOLT LOCK AND (JAM
0106 LAY LAKE
0107 MARTIN LAKE
0108 MITCHELL LAKE
0109 PICKWICK LAKE
0112 WEISS RESERVOIR
0114 WILSON LAKE
0115 LAKE PUROY
MEDIAN
TOTAL P
O.C29
0.029
0.044
0.018
0.076
0.017
0.053
0.056
0.092
0.053
0.049
MEDIAN
INORG N
0.770
0.300
0.480
0.835
0.390
0.170
0.290
0.535
0.260
0.460
0.170
500-
MEAN SEC
452.667
465.778
461.111
449.417
470.778
435.250
466.000
455.000
478.389
447.714
437.889
MEAN
CHLORA
4.017
2.144
8.567
2.183
7.056
6.407
6.211
2.450
11.261
7.400
12.711
15-
MIN 00
14.900
14.000
12.200
13.600
13.000
15.000
12.400
11.900
14.900
10.200
15.000
MEDIAN
DISS ORTrlO
0.007
0.008
0.014
0.006
0.032
0.004
0.022
0.035
0.034
0.022
0.014
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER
LAKE
CODE LAKE NAME
0101 8ANKHEAD LAKE
0103 GANTT RESERVOIR
0104 GUNTERSVILLE RESERVOIR
0105 HOLT LOCK AND DAM
0106 LAY LAKE
0107 MARTIN LAKE
0108 MITCHELL LAKE
0109 PICKWICK LAKE
0112 WEISS RESERVOIR
0114 WILSON LAKE
0115 LAKE PURDY
MEDIAN
TOTAL P
75 (
75 (
60 <
90 (
10 (
100 (
40 (.
20 (
0 (
30 (
50 (
7)
7)
6)
9)
1)
10)
. 4)
2)
0)
3)
5)
MEDIAN
INORG
10 <
60 (
30 (
0 (
50 <
95 (
70 (
20 (
80 (
40 (
95 (
N
1)
6)
3)
0)
5)
9)
7)
2)
8)
4)
9)
500-
MEAN SEC
60 (
30 (
4C (
70 (
10 (
100 (
20 (
50 (
0 (
80 (
90 (
6)
3)
4)
7)
1)
10)
2)
5)
0)
8)
9)
MEAN
CHLOi-'A
70 (
100 (
20 (
90 (
40 (
50 (
60 (
80 (
10 (
30 (
0 (
7)
10)
2)
9)
<*)
5)
6)
d)
1)
3)
0)
15-
MIN i
25 (
40 (
80 (
50 (
60 (
5 (
70 (
90 (
25 (
100 (
5 (
MEDIAN
)0 DISS OkT.lO P
2)
4)
8)
5)
6)
0)
7)
9)
2)
10)
0)
80 (
70 (
55 (
90 (
20 (
100 (
35 (
0 (
10 (
35 (
55 (
6)
7)
5)
9)
2)
10)
3)
0)
1)
3)
5)
INOEX
NO
32U
375
2db
390
190
450
295
260
125
315
295
-------
LAKES RANKED BY INDEX NOS.
RANK UAKE CODE LAKE NAME INDEX NO
1 0107 MARTIN LAKE 450
2 0105 HOLT LOCK AND DAM 390
3 0103 GANTT RESERVOIR 375
4 0101 BANKHEAD LAKE 320
5 0114 WILSON LAKE 315
6 0115 LAKE PURDY 295
7 0108 MITCHELL LAKE 295
8 0104 GUNTERSVILLE RESERVOIR 285
9 0109 PICKWICK LAKE 260
10 0106 LAY LAKE 190
11 0112 WEISS RESERVOIR 125
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