U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAIC CORPUS CHRISTI
JIM l€LLS, LIVE OAK,
AND SAN PATRICIO COUNTIES
HXAS
EPA REGION VI
WORKING PAPER No,
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
tVG.P.O. 699-440
-------
REPORT
ON
LAKE CORPUS CHRISTI
JIM WELLS, LIVE OAK,
AND SAN PATRICIO COUNTIES
TEXAS
EPA REGION VI
WORKING PAPER No, 641
WITH THE COOPERATION OF THE
TEXAS WATER QUALITY BOARD
AND THE
TEXAS NATIONAL GUARD
FEBRUARY, 1977
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CONTENTS
Page
Foreward ii
List of Texas Study Reservoirs iv
Lake and Drainage Area Map vi
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 5
IV. Nutrient Loadings • 11
V. Literature Reviewed 16
VI. Appendices 17
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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 freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication analysis are based on related concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [§303(e)], water
quality criteria/standards review [§303(c)], clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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Ill
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.
ACKNOWLEDGEMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Texas Water Quality Board
for professional involvement, to the Texas National Guard for
conducting the tributary sampling phase of the Survey, and to
those Texas wastewater treatment plant operators who voluntarily
provided effluent samples.
Hugh C. Yantis, Jr., Executive Director of the Texas Water
Quality Board, and John B. Latchford, Jr., Director, and the staff
of the Field Operations Division provided invaluable lake documen-
tation and counsel during the Survey, reviewed the preliminary
reports, and provided critiques most useful in the preparation of
this Working Paper series.
Major General Thomas Bishop, the Adjutant General of Texas,
and Project Officer Colonel William L. Seals, who directed the
volunteer efforts of the Texas National Guardsmen, are also grate-
fully acknowledged for their assistance to the Survey.
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1v
NATIONAL EUTROPHICATION SURVEY
STUDY RESERVOIRS
State of Texas
NAME
Amistad
Bastrop
Bel ton
Braunig
Brownwood
Buchanan
Caddo
Calaveras
Canyon
Colorado City
Corpus Christ!
Diversion
Eagle Mountain
Fort Phantom Hill
Houston
Kemp
Lake O'The Pines
Lavon
Lewisville (Garza-Little Elm)
Livingston
COUNTY
Val Verde
Bastrop
Bel1, Coryel1
Bexar
Brown
Burnet, Llano
Harrison, Marion, TX;
Caddo Parish, LA
Bexar
Comal
Mitchell
Jim Wells, Live Oak, San
Patricio
Archer, Baylor
Tarrant, Wise
Jones
Harris
Baylor
Camp, Marion, Morris,
Upshur
Coll in
Denton
Polk, San Jacinto, Trinity,
Walker
-------
Lyndon B. Johnson
Medina
Meredith
0. C. Fisher (San Angelo)
Palestine
Possum Kingdom
Sam Rayburn
Somerville
E. V. Spence
Stamford
Stillhouse Hollow
Tawakoni
Texoma
Travis
Trinidad
Twin Buttes
White River
Whitney
Wright Patman (Texarkana)
Burnet, Llano
Bandera, Medina
Hutchinson, Moore,
Potter
Tom Green
Anderson, Cherokee,
Henderson, Smith
Palo Pinto, Stephens,
Young
Angelina, Jasper
Nacogdoches, Sabine, San
Augustine
Burleson, Lee, Washington
Coke
Haskell
Bell
Hunt, Rains, Van Zandt
Cooke, Grayson TX; Bryan,
Johnston, Love, Marshall, OK
Burnet, Travis
Henderson
Tom Green
Crosby
Bosque, Hill
Bowie, Cass
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LAKE CORPUS CHRISTI
Tributary Sampling Site
X Lake Sampling Site
Sewage Treatnent Facility
Mathu Map Location
CORPUS
57 '.m. to 5-'te 31 at
^H'.e (aoueduct outlet
of Late Corpus "Visti)
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LAKE CORPUS CHRISTI
STORE! NO. 4811
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Lake Corpus Christi is eutrophic;
i.e., well supplied with nutrients and quite productive. Whether
nutrient enrichment is beneficial or deleterious depends on the
actual or potential effect on the uses of the lake. In this
regard, the Texas Water Quality Board has indicated that there
is little or no known impairment of the designated beneficial
uses of this lake.
Lake Corpus Christi ranked thirty-seventh in overall trophic
quality when the 39 Texas reservoirs sampled in 1974 were compared
using a combination of six water quality parameters*. Thirty-five
of the reservoirs had less median total phosphorus and median
dissolved orthophosphorus, 20 had less median inorganic nitrogen,
33 had less mean chlorophyll a_, and 31 had greater mean Secchi
disc transparency. Marked depression of dissolved oxygen with
depth occurred at stations 1 and 4 in May and at station 1 in August.
Survey limnologists observed macrophytes in the shallows at
stations 1, 2, and 4 in November but did not observe any surface
algal concentrations.
B. Rate-Limiting Nutrient:
The algal assay results indicate that Lake Corpus Christi was
nitrogen limited at the time the sample was collected (03/12/74).
See Appendix A.
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The lake data indicate nitrogen limitation at all sampling times.
C. Nutrient Controllability:
1. Point sources—During the sampling year, the listed point
sources contributed 4.1% of the total phosphorus load to Lake
Corpus Christi. The wastewater treatment plant at Mathis con-
tributed an estimated 2.2%, and two other facilities at George
West and Three Rivers collectively contributed 1.8%.
The present phosphorus loading of 2.40 g/m2/year is four times
that proposed by Vollenweider (Vollenweider and Dillon, 1974) as
a eutrophic loading (see page 15). Regardless of the applicability
of Vollenweider's eutrophic level to Texas reservoirs, control
of phosphorus only at the listed point-sources would not be expected
to result in appreciable improvement in the trophic condition of the
lake. Significant reduction of the present phosphorus loading will
require control of both point and non-point source contributions in
the entire Lake Corpus Christi drainage basin (see discussion below),
2. Non-point sources--Non-point sources contributed 95.9%
of the total phosphorus input during, the sampling year. The
Nueces River contributed 91.7%, and the ungaged minor tributaries
and immediate drainage contributed an estimated 3.5%.
The phosphorus export rate of the Nueces River was 5 kg/km2
during the sampling year and may be indicative of an underestimation
of listed point-source loads, the presence of unaccounted-for
point sources, or the influence of land-use practices in the drain-
age basin. However, even if the present Nueces River load could be
-------
reduced by 70%, the relatively large drainage area to lake area
ratio of 486 to 1 would still ensure a eutrophic loading to the
lake; i.e., the loading would still be 0.86 g/nr/year, or 1.5
times Vollenweider's eutrophic loading.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
i t
A. Lake Morphometry :
1. Surface area: 88.63 kilometers2.
2. Mean depth: 4.2 meters.
3. Maximum depth: >16.8 meters.
4. Volume: 372.246 x 106 m3.
5. Mean hydraulic retention time: 175 days (based on outflow)..
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Name
Nueces River
Minor tributaries &
Immediate drainage -
Totals
Drainage
area (km2)*
41,569.S
1.491.3
43,060.8
2. Outlet -
Alice Aqueduct
Nueces River
Total
C. Precipitation***:
1. Year of sampling: 78.8 centimeters.
2. Mean annual: 73.4 centimeters.
Mean flow
(m3/sec)*
24.470
0.930
25.400
43,149.4**
43,149.4
0.101
24.470
24.571
t Table of metric conversions—Appendix B.
tt Latchford, 1974.
* 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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III. LAKE WATER QUALITY SUMMARY
Lake Corpus Christi was sampled four times in 1974 by means of a
pontoon-equipped Huey helicopter. Each time, samples for physical and
chemical parameters were collected from a number of depths at four
stations on the lake (see map, page vi). 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
during the first visit, a single 18.9-liter depth-integrated sample was
composited for algal assays. Also each time, a depth-integrated sample
was collected from each of the stations for chlorophyll a_ analysis. The
maximum depths sampled were 16.8 meters at station 1, 7.6 meters at
stations 2 and 3, and 10.7 meters at station 4.
The sampling results are presented in full in Appendix D and are
summarized in the following table (the August nutrient samples were not
preserved properly and were not analyzed).
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PARAMETER
TEMP (C)
OISS OXY (MG/D
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02*N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 3/12/74)
4 SITES
RANGE
20.1 - 23.9
6.0 - 8.2
558. - 1152.
8.2 - 8.6
170. - 181.
0.081 - 0.118
0.039 - 0.058
0.030 - 0.330
0.030 - 0.080
0.500 - 0.800
0.060 - 0.410
0.530 - 0.930
7.4 - 17.3
0.5 - 0.8
0.665
11.1
0.6
7.6
740.
8.5
175.
MEAN MEDIAN
22.5 22.9
7.6
752.
8.5
175.
0.096 0.095
0.048 0.047
0.072 0.040
0.040 0.040
0.593 0.600
0.112 0.080
0.640
CHEMICAL CHAKACTEKISTICS FOR CORPUS CRISTI LAKE
STORET COOE 4811
2ND SAMPLING ( 5/21/74)
4 SITES
9.8
0.6
RANGE
20.6 - 29.0
1.0 - 8.0
748. - 1405.
7.7 - 8.7
144. - 182.
0.072 - 0.351
0.022 - 0.237
0.030 - 0.320
0.030 - 0.380
0.400 - 1.400
O.ObO - 0.550
0.430 - 1.450
6.6 - 18.4
0.3 - 1.2
MEAN
27.3
5.6
1007.
8.5
159.
0.124
0.053
0.110
0.080
0.674
0.190
0.784
12.6
0.8
MEDIAN
28.0
6.8
887.
8.6
162.
0.107
0.040
0.080
0.060
0.600
0.130
0.650
12.7
0.8
3RD SAMPLING ( 8/14/74)
4 SITES
RANGE
27.0 - 29.0
1.8 - 8.2
458. - 1039.
7.8 - 8.8
ooo»*» —t
»««««« -««•«««•«««•««»«««*««»»
««*«»» -«««»««««»»»«»«««««*»««
MEAN
28.3
5.9
899.
8.4
MEDIAN
28.4
6.2
985.
8.5
»*««*» —«««»«»«««»•«»»««««*«««
»««««» -*«»»»«««»»•»»«»«»«•»««
4.4 - 77.5
0.1 - 0.9
35.4
0.6
29.9
O.B
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A. SUMMARr OF PHYSICAL AND CHEMICAL CHARACTERISTICS FOK CORPUS C&ISTI LAKE
STORET CODE 4811
4Th SAMPLING ill/
PARAMETER
TEMP (o
DISS OXY (MG/L>
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/D
TOT P (MG/D
ORTHO P (MG/D
N02*N03 (MG/L>
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/D
CHLRPYL A (UR/L)
SECCHI (METERS)
RANGE
23.0 - 25.
5.4 -
1014. - 7259.
7.8 -
123. - 140.
0.144 - 1.100
0.071 - 0.124
0.040 - 0.220
0.020 - 0.120
0.200 - 2.700
0.070 - 0.330
0.310 - 2.910
11.5 - 23.0
0.3 -
4
4
4
1.
4
.
0
'4
0
0
0
10
0
0
8
SITES
MEAN
24.3
7.4
3226.
8.2
129.
0.227
0.108
0.127
0.040
0.581
0.167
0.709
19.9
0.5
MEDIAN
24.9
7.6
2327.
8.3
127.
0.170
0.111
0.120
0.030
0.400
0.150
0.610
22.6
0.5
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/12/74
05/21/74
08/14/74
11/05/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Merismopedia sp.
Scenedesmus sp.
Chroomonas sp.
Kirchneriella sp.
Microcystis sp.
Other genera
Total
Centric diatoms
Diploneis sp.
Scenedesmus sp.
Merismopedia sp.
Anabaena sp.
Other genera
Total
Diploneis sp.
Dactyl ococcops is sjx
Lyngbya sp.
Oscillatoria sp.
Raphidiopsis sp.
Other genera
Total
Diploneis sp.
Centric diatoms
Oocystis sp.
Chroomonas sp.
Chi amydomonas sp.
Other genera
Total
Algal Units
per ml
1,330
1,216
874
874
836
5,209
10,339
1,451
747
484
440
396
2,548
6,066
5,065
4,810
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2. Chlorophyll a -
Sampling
Date
03/12/74
05/21/74
08/14/74
11/05/74
Station
Number
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
Chlorophyll a
(yg/1)
7.4
8.1
11.5
17.3
18.4
11.4
14.0
6.6
31.0
77.5
28.8
4.4
22.3
11.5
23.0
22.9
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/l-dry wt.)
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
0.035
0.085
0.085
0.035
0.091
0.091
1.091
1.091
3.3
2.4
16.2
9.5
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10
of Lake Corpus Christi was moderately high at the time the
sample was collected (03/12/74). Also, a significant increase
in yield resulted when only nitrogen was added but not when
phosphorus alone was added. Based on these results,
nitrogen limitation is indicated at that time.
The lake data indicate nitrogen limitation at all sampling
times. The mean inorganic nitrogen to orthophosphorus ratios
were 4 to 1 or less, and nitrogen limitation would be expected.
Nitrogen limitation, as indicated by the algal assay or by
in-lake nitrogen to phosphorus ratios, does not necessarily
mean that the trophic condition of the lake can be improved by
controlling nitrogen inputs. In many cases, the apparent con-
dition of nitrogen-limitation results from excessive phosphorus
input from point or non-point sources and is often accompanied
by a corresponding increase in primary production. In such
cases, the reversal of the enriched condition depends upon
phosphorus control, not nitrogen control.
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11
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Texas National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page vi), except for the high
runoff month of May when two samples were collected. Sampling was
begun in September, 1974, and was completed in August, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Texas 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" ("II" of U.S.G.S.) were estimated using the nutrient loads
at station A-2, in kg/km2/year, and multiplying by the II area in km2.
The operator of the George West wastewater treatment plant provided
monthly effluent samples and corresponding flow data. The operators of
the wastewater treatment plants of Three Rivers and Mathis did not par-
ticipate. Nutrient loads from these sources were estimated at 1.134 kg
P and 3.401 kg N/capita/year, and flows were estimated at 0.3785 m3/capita/
day.
See Working Paper No. 175.
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12
A. Waste Sources:
1. Known municipal -
Name
George West*
Three Rivers**
Mathis**
Pop.
Served
2,000
1,725
4,100
Treatment
act. sludge
ext. aer.
tr. filter
+ pond
Mean Flow
(rnVd)
480.0
652.9
1,551.9
Receiving
Water
Timon Creek
Frio River
Unnamed Creek
Lake Corpus
Christi
to
2. Known industrial - None
* Treatment plant questionnaire.
** Anonymous, 1971.
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13
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Nueces River 195,250 91.7
b. Minor tributaries & immediate
drainage (non-point load) - 7,455 3.5
c. Known municipal STP's -
George West 1,895 0.9
Three Rivers 1,955 0.9
Mathis . 4,650 2.2
d. Septic tanks* - 200 0.1
e. Known industrial - None
f. Direct precipitation** - 1,550 0.7
Total 212,955 100.0
2. Outputs -
Lake outlet - Alice Aqueduct 365
Nueces River 84,625
3. Net annual P accumulation - 127,965 kg.
* Estimate based on 712 lakeshore dwellings; see Working Paper No. 175.
** See Working Paper No. 175.
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14
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Nueces River 1,472,295 89.2
b. Minor tributaries & immediate
drainage (non-point load) - 52,195 3.2
c. Known municipal STP's -
George West 1,300 0.1
Three Rivers 5,865 0.4
Mathis 13,945 0.8
d. Septic tanks* - 7,590 0.5
e. Known industrial - None -
f. Direct precipitation** - 95,685 5.8
Total 1,648,875 100.0
2. Outputs -
Lake outlet1- Alice Aqueduct 2,605
Nueces River 608,810
Total 611,415
3. Net annual N accumulation -'1,037,460 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Nueces River 5 35
* Estimate based on 712 lakeshore dwellings; see Working Paper No. 175.
** See Working Paper No. 175.
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15
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 2.40 1.44 18.6 11.7
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Corpus Christi:
"Dangerous" (eutrophic loading) 0.58
"Permissible" (oligotrophic loading) 0.29
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16
V. LITERATURE REVIEWED
Anonymous, 1971. Inventory of municipal waste facilities. EPA
Pub. OWP-1, vol. 6, Wash., DC.
Latchford, John B., Jr., 1974. Personal communication (lake mor-
phometry). TX Water Qua!. Bd., Austin.
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.
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17
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE OAT A TO 3c USED IN BANKINGS
LAKE
CODE LAKE NAME
4801 AMISTAD LAKE
4802 BASTROP LAKE
4803 BELTON RESERVOIR
4804 BRAUNIG LAKE
4805 BROWNWOOD LAKE
4806 LAKE BUCHANAN
4807 CAOOO LAKE
4808 CALAVERAS LAKE
4809 CANYON RESERVOIR
4810 LAKE COLORADO CITY
4811 CORPUS CRIST I LAKE
4812 DIVERSION LAKE
4813 EAGLE MOUNTAIN LAKE
4814 FT PHANTOM HILL LAKE
4815 GARZA LITTLE ELM RESEHVO
4816 KEMP LAKE
4817 HOUSTON LAKE
4818 LAKE OF THE PINES
4819 LAVON RESERVOIR
4820 LIVINGSTON LAKE
4821 LYNDON B JOHNSON LAKE
4822 MEDINA LAKE
4823 LAKE MEREDITH
4824 PALESTINE LAKE
4825 POSSUM KINGDOM RESERVOIR
4826 SAN ANGELO RESERVOIR
4827 SAM RAY8URN RESERVOIR
4828 E V SPENCE RESERVOIR
MED UN
TOTAL P
0.013
0.02?
0.016
0.134
0.027
0.036
0.055
0.038
0.010
0.042
0.113
0.025
0.024
0.060
0.045
0.023
0.097
0.031
0.063
0.196
0.042
0.010
0.021
0.031
0.023
0.098
0.029
0.036
MEDIAN
INO^G N
0.500
0.090
0.165
0.150
0.100 '
0.250
0.070
0.060
0.450
0.090
0.130
0.080
0.070
0.105
0.380
0.110
0.260
0.090
0.180
0.555
0.420
0.600
0.070
0.180
0.070
0.140
0.150
0.030
500-
MEAN SEC
371.4/4
419.917
378. J12
461.625
470.3/5
437.625
463.333
461.667
384i-812
473.625
475.187
470.111
469.625
474.909
475.782
4S5.000
486.187
440.000
485.333
465.469
456.500
403.562
439.312
442.625
419.045
481.000
439.458
462.583
MEAN
CHLUKA
2.0*2
12.392
8.025
22.762
4.867
8.606
„ 14.808
22.500
2.500
12.675
19.756
15.867
5.662
6.317
14.156
10.217
16.650
12.919
5.400
16.112
8.100
12.944
3.037
10.619
9.495
24.675
6.267
11.775
15-
MIN uo
14,900
15.000
15.000
14.800
14.400
15.000
11.400
13.000
14.800
10.200
14.000
9.000
11.000
9.800
14.600
10.400
12.400
15.000
8.800
15.000
14.900
15.000
14,-yOO
14.800
15.000
10.200
15.000
15.000
MEDIAN
OISS O^THO P
0.009
0.007
0.007
0.062
0.007
0.012
O.U1J
0.007
0.006
0.012
0.050
0.009
0.008
0.022
0.018
0.007
0.036
0.011
0.018
0.128
0.013
0.004
0.009
0.010
0.009
0.011
0.009
0.008
-------
LAKE DATA TO BE USED IN
LAKE
CODE LAKE NAME
i
4829 SOMESV1LLE LAKE
4830 STAMFORD LAKE
4B31 STILLHOUSE HOLLO* RESEHV
4832 TAWAKONI LAKE
4833 TEXARKANA LAKE
4834 TEXOMA LAKE
4835 TRAVIS LAKE
4836 TRINIDAD
4837 TWIN 8UTTES RESERVOIR
4838 WHITE RIVER RESERVOIR
4839 WHITNEY LAKE
MEDIAN!
TOTAL P
0.053
0.073
O.Ola
0.046
0.106
0.042
0.018
0.389
0.029
0.020
0.028
MEDIAN
0.115
0.1,60
0.160
0.100
0.120
0.160
0.250
0.110
0.250
0.110
0.120
500-
MEAN SEC
473.833
482. 71*.
406.250
466.417
47b.500
451.321
389.913
479.500
454.917
434.500
430.500
ML ,N
CHLOfcA
24. on
18.457
3.917
18.246
19.119
12.493
5.595
24.300
8.708
4.333
6.912
MlN DO
13.000
10.600
15.000
13.200
12.400
15.000
15.000
10.000
14.800
15.000
15.000
ME 01
OISS Ur!Tl
0.013
0.012
0.010
0.013
0.030
0.018
0.007
0.240
0.009
0.009
0.008
-------
OF LAKES *ITH
VALUES (NUMBER OF LAKES *iTn HIGHE*
LAKE
CODE LAKE NAME
<4801 AMISTAO LAKE
4802 HASTROD LAKE
4803 8ELTON RESERVOIR
4804 BRAUNIG LAKE
4805 BROrfNWOOD LAKE
4806 LAKE BUCHANAN
4807 CADOO LAKE
4808 CALAVERAS LAKE
4809 CANYON RESERVOIR
4810 LAKE COLORADO CITY
4811 CORPUS CRISTI LAKE
4812 DIVERSION LAKE
4813 EAGLE MOUNTAIN LAKE
4814 FT PHANTOM HILL LAKE
4815 GARZA LITTLE ELM RESERVO
4816 KEMP LAKE
4817 HOUSTON LAKE
4818 LAKE OF THE PINES
4819 LAVON RESERVOIR
4880 LIVINGSTON LAKE
4821 LYNDON B JOHNSON LAKE
4823 MEDINA LAKE
4823 LAKE MEREDITH
4824 PALESTINE LAKE
4825 POSSUM KINGDOM RESERVOIR
4826 SAN ANOELO RESERVOIR
4827 SAM. RAYBURN RESERVOIR
4828 E V SPENCE RESERVOIR
MEDIAN
TOTAL P
95
79
92
5
66
47
26
45
99
39
8
68
71
24
34
76
16
54
21
3
39
99
82
54
74
13
59
50
( 36)
( 30)
( 35)
( 2)
( 25).
< 18)
( 10)
( 17)
( 37)
( 14)
( 3)
( 26)
< 27)
( 9)
( 13)
< 29)
( 6)
(20)
( 8)
( 1)
( 14)
( 37)
( 31)
( 20)
( 2fi)
< 5)
< 22)
( 19)
MEDIAN
INO^G N
5
7f
26
42
70
21
91
100
8
76
47
83
91
66
13
61
16
76
29
3
11
0
91
32
91
45
39
83
( 2)
( 28)
( 10)
( 16)
( 26)
( 7)
( 33)
( 38)
( 3)
( 28)
( 18)
( 3D
< 33)
( 25)
( 5)
( 22)
( 6)
( 28)
( ID
( D
( 4)
( 0)
( 33)
< 12)
( 33)
( 17)
( 15)
( 3D
500-
MEAN 5EC
100
82
97
50
29
74
42
47
95
26
18
32
34
21
16
55
0
66
3
39
53
89
71
63
64
8
68
45
( 38)
( 3D
( 37)
( 19)
( ID
( 28)
( 16)
( 18)
( 36)
< 10)
( 7)
( 12)
( 13)
( 8)
( 6)
( 21)
( 0)
( 25)
( 1)
( 15)
( 20)
( 34)
( 27)
( 24)
( 32)
( 3)
( 26)
! 17)
ME.AN
C-HLOniA
100
47
68
8
87
63
32
11
97
42
13
29
79
74
34
55
24
39
84
26
66
37
95
53
58
0
76
50
( 3d)
( 18)
( 26)
( 3)
( 33)
( 24)
( 12)
( 4)
( 37)
( Ib)
( 5)
( ID
( 30)
( 28)
< 13)
( 21)
( 9)
( 15)
( 32)
( 10)
( 25)
( 14)
( 36)
( 20)
( 22)
I 0)
( 29)
! 19)
1s-
MIN UO
39
17
17
49
58
17
76
67
49
88
61
97
79
95
55
84
72
17
100
17
39
17
39
49
17
88
17
17
( 14)
( 0)
( 0)
( 17)
( 22)
( 0)
( 29)
( 25)
< 17)
( 33)
( 23)
< 37)
( 30)
( 36)
( 21)
( 32)
( 27)
( 0)
( 38)
( 0)
( 14)
( 0)
( 14)
( 17)
( 0)
( 33)
( 0)
( 0)
MEDIAN
01 Si LMTrlO P
63
92
84
5
94
39
30
92
97
39
8
63
76
16
21
92
11
46
21
3
30
100
63
51
63
46
63
76
( 2D
( 34)
( 3D
( 2)
( 3D
( 14)
( 10)
( 34)
( 37)
( 14)
( 3)
( 21)
( 28)
( 6)
< 7)
( 34)
( 4)
( 17)
( 7)
< l>
( 10)
( 38)
( 21)
( 19)
1 21)
( 17)
I 21)
( 28)
NO
40,
393
384
159
394
2bl
297
362
445
310
155
372
430
296
173
423
139
298
258
91
238
342
441
302
387
200
322
321
-------
OF LAKES WITH HIGHER VALUES (NUMBER OF HKES «ITH HIGHER VALUES)
LAKE
coot LAKE NAME
4829 SOMERVILLE
4830 STAMFORD LAKE
4831 STILLHOUSE HOLLOW
4832 TAWAKONI LAKE
4833 TEAARK.ANA LAKE
4834 TEXOMA LAKE
4635 TRAVIS LAKE
4836 THINIOAD
4637 TWIN dUTTES RESERVOIR
4838 WHITE RIVER RESERVOIR
4839 WHITNEY LAKE
MEDIAN
TOTAL P
29 !
18 (
88 (
3Z (
11 (
39 (
88 (
0 (
59 (
84 (
63 (
11)
7)
33)
12)
4)
14)
33)
0)
22)
32)
24)
MEDIAN
INO^G N
55
v7
37
70
51
34
21
61
21
61
SI
( 21)
' 37)
( 14)
( 26)
( 19)
( 13)
( 7)
( 22)
( 7)
( 22)
( 19)
500-
MEAN SEC
24 (
5 (
67 (
37 (
13 (
61 (
92 (
11 (
58 (
76 (
79 (
9)
2)
33)
14)
5)
23)
35)
4)
22)
29)
30)
MEAN
CHLOPA
3
18
92
21
16
45
82
5
61
89
71
( 1)
( 7)
( 35)
( 8)
( 6)
( 17)
( 3D
( 2)
( 23)
( 34)
( 27)
15-
MIN 00
6?
82
17
63
72
17
17
92
49
17
17
( 25)
( 31)
( 0)
( 24)
( 27)
( 0)
( 0)
( 35)
( 17)
( 0)
( 0)
MEDIAN
DISS .MTHO H
30 (
39 (
51 (
30 I
13 (
21 I
84 (
0 (
63 (
63 (
76 (
10)
14)
19)
10)
5)
7)
31)
0)
21)
2U
28)
INOEA
NO
20«
259
372
253
176
217
J84
169
311
390
357
-------
LA
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INQEX NO
29 4821 LYNDON b JOHNSON LAKE 238
30 4834 TEXOMA LAKE 217
31 4829 SOMEWVILLE LAKE 208
32 4826 SAN ANGELO HESERVOIR 200
33 4833 TEXARKANA LAKE 176
34 4815 GARZA LITTLE ELM RESERvO 173
35 4836 TRINIDAD 169
36 4804 BRAUNIG LAKE 159
37 4811 CORPUS CRIST! LAKE 155
38 4817 HOUSTON LAKE 139
39 4820 LIVINGSTON LAKE 91
-------
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 m-1le
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
LAKE CODE 4riU
TRIBUTARY FLOW INFORMATION FOR TEXAS
COKPUS CHrtlSTI LAKE
Ob/10/76
TOTAL DRAINAGE ArtEA OF LAKEISQ KM) 4314Q.4
SUS-0'^AINAGE
TRIBUTARY AREA(SO KM)
NORMALIZED FLOWS(CMS)
JAN
FEB
MAR
APR
JUN
J'JL
AUG
SEP
OCT
NOV
DtC
MEAN
481 IA1
4811A2
tSHDl
481122
431^9.4
41569.5
0.0
1579.9
10.48
9.06
0.093
0.34
10.48
11.04
0.105
0.42
9.63
8.78
0.108
0.34
12.46
16.99
0.136
0.65
44.46
40.78
0.130
1.56
35.11
46.44
0.093
1.76
27.75
30.02
0.085
1.13
14.72
16.42
0.099
0.62
63.71
53.52
0.096
2.04
48.lt
42.19
0.079
1.61
11.33
11.89
0.091
0.«5
4.81
6.23
0.093
0.24
24.47
24.47
0.101
0.93
SUMMARY
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
NOTE «*» NO DRAINAGE AREA FOR 481101.
MEAN MONTHLY FLOWS AND DAILY FLOWS
-------
FLOW INFORMATION FOP TF..«AS
06/10/76
LAKE COOE 461 1
COKPUS CrIKlSTI LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWSICMSI
TRI3UTARY '-lONTn YEA" MEAN FLOW DAY
101
4611ZZ
9
10
11
12
1
2
3
it
5
6
7
8
9
10
11
12
1
2
3
A
5
6
7
8
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
0.510
0.453
0.396
0.363
0.396
0.481
0.425
0.368
0.263
0.170
0.142
0.198
1.727
0.14?
0.340
0.170
0.142
0.368
0.113
0.142
1.671
1.727
1.048
0.255
8
4
1
6
13
15
29
12
3
24
17
29
FLO* DAY
0.014
0.014
0.014
0.011
0.011
0.014
0.011
0.011
0.003 24
0.006
0.006
0.006
PAY
FLOW
0.008
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORCI RETRIEVAL DATE,
4-1101
28 02 37.0 097 52 14.0
CORPUS CKISTI LAKE
48409 TtXAS
DATE
FROM
TO
74/03/12
74/05/21
74/08/14
74/11/05
./
DATE
FWOM
TO
74/03/12
74/05/21
74/08/14
74/11/05
TIME
OF
DAY
11 35
11 35
11 35
11 35
14 00
14 00
14 00
14 00
14 00
14 00
13 40
13 40
13 40
13 40
13 40
13 40
11 20
11 20
11 20
11 20
11 20
TIME
OF
DAY
11 35
11 35
11 35
11 35
14 00
14 00
14 00
14 00
14 00
14 00
14 00
13 40
13 40
11 ?0
11 20
11 20
11 20
11 20
DEPTH
FtET
0000
0005
0015
0033
0000
0005
0015
0030
0045
0055
0000
0005
0015
0030
0045
0053
0000
0005
0015
0030
0046
DEPTH
FEET
0000
0005
0015
0033
0000
0005
0009
0015
0030
0045
0055
0000
0006
0000
0005
0015
0030
0046
00010
*ATER
TEMP
CENT
21.2
21.1
20.9
20.1
29.0
28.2
27.2
26.6
23.9
20.6
28.3
28.2
28.0
27.6
27.5
27.0
25.3
25.2
25,3
25.3
25.3
00665
PHOS-TOT
MG/L P
0.082
0.0d4
0.081
0.100
0.073
0.075
0.076
0.081
0.146
0.351
0.163
0.155
0.199
0.144
0.150
00300 00077 00094
00 TRANSP CNOUCTVY
SECCHI FIELD
MG/L INCHES MICROMhO
32
8.1
8.0
7.6
48
fl.O
7.2
5.6
1.2
1.0
7.2 36
6.8
6.2
5.2
4.0
1.8
7.0 30
7.6
7.8
7.6
8.4
32217 00031
CHLRPHYL INCUT LT
A REMNING
UG/L PERCENT
7.4
1U.4
1.0
31.0
1.0
22.3
610
608
603
558
881
876
860
850
795
748
985
972
975
960
951
946
1345
1014
1046
1047
1209
llEPALt.5
4
00400 00410
PH T ALK
CAC03
SU
8.50
8.50
8.50
8.50
8.70
8.70
8.60
8.50
7.95
7.70
8.80
8.70
8.5C
8.40
8.10
a. oo
8. 36
8.33
8.31
8.30
8.30
MG/L
174
170
170
171
Ifa3
163
164
166
169
182
127
125
124
129
129
2111202
0038 FEET OE^TH
00610 00625 00630 00671
NH3-IN TOT KJEL N02fcN03 PnOS-OIS
TOTAL N U-TOTAL ORTHO
MG/L
0.030
0.030
0.040
0.040
0.050
0.060
0.030
0.050
0.070
0.380
0.020
0.020
0.020K
0.030
0.020
MG/L
0.600
0.800
0.600
0.500
0.600
0.500
0.400
0.400
0.400
0.900
0.300
0.200K
0.200
0.600
0.600
MG/L
0.030
0.030
0.040
0.030
0.050
0.080
0.030
0.080
0.320
0.170
0.120
0.120
0.110
0.120
0.130
MG/L P
0.056
0.057
0.056
0.058
0.031
0.031
0.034
0.047
0.106
0.237
0.123
0.114
0.117
0.110
0.105
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
7b/C2/ll
4-.1102
8 0-+ 24.0 097 bn 02.0
O-^US Crfl' TI
1 ie>ALcS
DATE
FROM
TO
74/03/12
74/05/21
74/08/14
74/11/05
DATE
FROM
TO
74/03/12
74/05/21
74/08/14
74/11/05
TIME DEPTH
OF
DAY FEET
12 10 0000
12 10 0005
12 10 0018
11 30 0000
11 30 0005
11 30 0015
11 30 0020
14 10 0000
14 10 0005
14 10 0015
14 10 0024
11 00 0000
11 00 0005
11 00 0015
11 00 0025
TIME DEPTH
OF
DAY FEET
12 10 0000
12 10 0005
12 10 0018
11 30 0000
11 30 0005
11 30 0015
11 30 0020
14 10 0000
14 10 0003
11 00 0000
11 00 0005
11 00 0015
11 00 0025
00010
WATER
TtMP
CENT
22.3
22.2
21.9
28.2
28.1
28.1
27.7
29.0
28.9
28.6
26.3
24.8
25.4
25.0
24.9
00665
PHOS-TOT
MG/L P
0.087
0.082
0.084
0.076
0.073
0.072
0.077
0.169
0.160
0.159
0.175
00300
DO
MG/L
8.
8.
7.
7.
6.
8.
8.
a.
7.
7.
8.
7.
7.
32217
0
2
0
6
4
2
0
0
0
4
0
8
4
CHLRPHYL
A
UG/L
8.
11.
77.
11.
1
4
5
5
00077
TRANSP
SECCiI
INCHES
24
36
36
25
00031
INCDT LT
HEMMING
PERCENT
1.0
1.0
00094
CNOuCTVY
FIELO
MIC^OMHO
674
670
630
885
885
887
881
992
992
987
989
1940
2430
2268
2206
00400
PH
su
8. 60
8.60
8.55
8.65
B.60
a. 60
8.50
8.70
8.60
8.60
8.60
3.38
8.35
8.33
8.33
00410
T ALK
CAC03
MG/L
172
173
172
160
160
159
162
128
127
127
124
211
0023
00610
NHJ-N
TOTAL
MG/L
0.030
0.040
0.030
0.040
0.040
0.060
0.060
0.030
0.030
0.030
0.040
1202
FtEl DEPTH
00625
TOT KJEL
N
MG/L
0.700
0.600
0.500
0.900
0.600
0.500
0.500
0.500
0.400
0.300
0.400
00630
«2(kN03
TOTAL
MG/L
0.040
0.030
0.040
0.040
0.040
0.030
0.060
0.120
0.120
0.120
0.110
00671
PhOb-OIS
MG/L P
0.050
0.049
0.053
0.022
0.022
0.024
0.032
0.124
0.122
0.119
0.108
-------
STO*ET
t"VAl_ SATE 76/02/11
4*1103
28 Ot> 53.0 097 54 £9.0
COr^US CRI^TI LAKE
•*3297 TEXAS
DATE
FROM
TO
74/03/12
74/05/21
74/08/14
74/11/05
DATE
FROM
TO
74/03/12
74/05/21
74/08/14
74/11/05
TIME
OF
DAY
12 35
12 35
12 35
12 15
11 00
11 00
11 00
11 00
11 15
11 15
11 15
11 15
10 40
10 40
10 40
TIME
OF
DAY
12 35
12 35
12 35
12 35
11 00
11 00
11 00
11 00
11 15
11 15
10 40
10 40
10 40
DEPTH
FEET
0000
0005
0015
0025
0000
0005
0015
0022
0000
0005
0015
0023
0000
0005
0015
DEPTH
FEET
0000
0005
0015
0025
0000
0005
0015
0022
0000
0006
0000
0005
0015
00010
WATER
TEMP
CENT
23.2
23.0
22.9
22.9
28.0
28.0
27.9
27.9
28.6
28.6
28.6
2B.6
23.6
23.6
23.5
00665
PHOS-TOT
MG/L P
0.094
0.098
0.095
0.103
0.111
0.107
0.104
0.109
0.181
0.161
0.180
00300 00077
DO TRANSP
SECCHI
MG/L INCHES
20
7.6
7.8
7.6
24
6.8
6.8
6.8
6.8 24
6.4
6.0
5.2
8.0 18
8.0
7.8
32217 00031
CHLRPHYL INCDT LT
A HEMMING
UG/L PERCENT
11.5
14.0
28.8
1.0
23.0
00094
CNOUCTVY
FIELD
MICKOMHO
754
749
741
740
961
964
957
954
1036
1037
1038
1039
2386
2850
2843
1 IE- ALES
4
00400 00410
PH r ALK
SU
8.60
8.55
8.5C
8.50
8.60
8.6G
8.60
8.6C
8.60
8.60
8.50
8.50
8.42
8.40
8.40
CAC03
MG/L
178
175
176
176
156
162
162
163
127
127
123
2111202
0030 FEET OE.PTH
00610 00625 00630
NH3-N TOT KJEL N02&N03
TOTAL
MG/L
0.040
0.040
0.040
0.030
0.030
0,050
0.030
0.040
0.030
0.030
0.040
N
MG/L
0.600
0.600
0.600
0.500
1.400
0.500
0.600
0.600
0.700
0.300
O.bOO
4
N-TOTAL
Mo/L
0.04U
0.040
0.040
0.040
0.050
0.080
0.040
0.050
0.040
0.040
0.040
fc
00671
PHOS-DIS
UrtTHO
MG/L P
0.042
0.045
0.047
0.046
0.040
0.044
0.039
0.040
0.11S
0.113
0.108
-------
STO^ET RETRIEVAL OATE 7b/()2/li
4dllO<«
28 11 42.0 097 55 14.0
*IFTI LA<<,£
TEXAS
OATE TIME DEPTH
FROM OF
TO DAY FEET
74/03/12 13
13
13
13
74/05/21 10
10
10
10
10
74/08/14 10
10
10
74/11/05 10
10
10
10
00 0000
00 0005
00 0015
00 0023
30 0000
30 0005
30 0015
30 0025
30 0035
50 0000
50 0005
50 0010
10 0000
10 0005
10 0015
10 0025
00010
WATER
TEMP
CENT
23.9
23.8
23.S
23.7
28.0
28.0
28.0
28.0
28.0
28.5
28.4
28.2
23.0
23.1
23.1
23.1
00300
DO
MG/L
7.4
7.0
6.0
5.2
5.2
7.0
2.8
4.6
4.4
4.4
7.0
6.8
6.6
5.4
00077
T^ANSP
SECCHI
INCHES
16
12
3
11
00094
CNDUCTVY
FIELD
MIC^OMHO
876
912
998
1152
1330
1332
1340
1333
1405
462
462
458
7258
7257
7259
7257
lltK<
4
00400
PH
su
8.50
3.40
8.30
8.20
8.60
8.40
8.40
8.40
8.15
8.10
7.80
7.90
8.17
7.95
7.82
7.80
• -..ES
00410
T ALK
CAC03
MG/L
176
178
179
181
148
145
144
145
144
140
139
140
127
211
0028
00610
Nn3-M
TOTAL
MO/L
0.040
0.040
0.050
0.080
0.060
0.090
0.080
0.100
0.200
0.070
0.060
0.050
0.120
1202
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.600
0.500
0.600
0.600
1.000
0.700
0.700
0.700
0.900
0.700
0.400
0.400
2.700
OObJO
IN.02&N03
N-TOTAL
MG/L
0.070
0.110
0.170
0.330
0.120
0.200
0.180
0.200
0.220
0.220
0.210
0.210
0.210
00671
HnOS-OlS
OUTNO
MG/L P
0.039
0.042
0.040
0.039
0.039
0.048
0.050
0.051
0.062
0.105
0.098
0.034
0.071
OATE
FROM
TO
74/OJ/12
74/05/21
74/08/14
74/11/05
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCOT LT
OF A REMNING
DAY FEET
13
13
13
13
10
10
10
10
10
10
10
10
10
10
10
00
00
00
00
30
30
30
30
30
50
50
10
10
10
10
0000
0005
0015
0023
0000
0005
001S
0025
0035
0000
0001
0000
0005
0015
0025
MG/L P UG/L PERCENT
0
0
0
0
0
0
0
0
0
(;
0
0
1
.108 17.3
.114
.112
.118
.133 6.6
.146
.153
.171
.225
4.4
1.0
.171 22.9
.187
.171
.100
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STCWET RETRIEVAL DATE 76/03/10
4611A1
28 0,2 25.0 097 51 45.0 4
NUECES RIVER
4833b 15 'ATrilS
o/cospus CHRISTI LAKE
TX riWY 359 8ROG 1.7 Kl NE OF SANDIA
11EPALES. 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/09/08
74/10/04
74/11/01
74/12/06
75/01/18
75/02/15
75/03/39
75/04/12
75/05/03
75/05/24
75/06/21
75/07/17
75/08/29
00630 00625
TIME DEPTH M02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
11
12
12
13
14
11
13
10
11
14
20
18
30
30
00
15
20
00
30
00
45
45
10
15
25
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
.016
.160
.160
.024
.012
.008
.005
.010
.055
.045
.230
.230
.115
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
.700
.700
.500
.900
.800
.500
.900
.450
.400
.600
.700
.575
.600
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.
020
035
020
024
020
024
035
035
035
015
040
060
030
MG/C
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
030
118
110
120
088
072
055
060
070
060
095
135
130
MG/L P
0.070
0.160
0.140
0.130
0.120
0.090
0.100
0.091
0.070
0.100
0.130
0.175
0.160
-------
STOWET KL'TRIEVAL DATE 7(3/03/10
4r!l 1A2
28 17 50.0 098 02 30.0 4
NUECtS RIVL-
46 7.S GEORGE. <«tL:>T
T/CUK^US O3ISTI LAKfr
SEC *0 8HDG rfELO* GEu^GE WEST STP
0000 FEET DEPTn CLASS 00
DATE
FROM
TO
74/09/08
74/10/04
74/11/01
74/12/06
75/01/18
75/02/15
75/03/29
75/04/12
75/05/03
75/05/24
75/06/21
75/07/17
75/08/29
TIME DEPTH
OK
DAY FEET
10 50
12 45
11 15
11 40
10 45
12 53
10 00
15 00
11 35
10 45
15 10
19 30
19 00
00630
N02&N03
N-TOTAL
MG/L
a. 156
1.440
2.240
1.760
2.080
1.500
3.000
4.000
1.880
1*650
0.220
1.150
0.320
00625
TOT KJEL
N
MG/L
1.300
0.800
0.700
0.505
0.800
0.900
0.600
0.300
0.800
1.500
1.050
0.750
0.800
00610
NM3-N
TOTAL
MG/L
0.030
0.020
0.020
0.016
0.040
0.040
0.025
0.025
0.045
0.170
0.045
0.022
0.025
00671
PHOS-DIS
OUTHO
MG/L P
0.190
0.090
0.050
0.080
0.012
0.064
0.035
0.055
0.065
0.140
0.270
0.185
0.020
00665
PHOS-TQT
MG/L P
0.410
0. 140
0.110
0.090
0.060
0.090
0.080
0.085
0.110
0.290
0.400
0.230
0.120
-------
STOStT >?F1R1EVAL DMT 76/03/10
4611A3
28 20 00.0 098 05 10.0 4
NUECES RIV_<
48 7.5 GEORGE rfEST
T/CORPUS CHRISTI LAKE
US riWY 59 PRDG ABOVE GEORGE WEST STP
llEPALtS 2111204
0000 FEET DEPTh CLASS 00
DATE
FROM
TO
74/09/08
74/10/04
74/11/01
74/12/06
75/01/18
75/02/15
75/03/29
75/04/12
75/05/03
75/05/24
75/06/21
75/07/17
75/08/29
TIME 1
OF
DAY 1
10 10
12 00
11 00
11 30
10 15
12 35
09 ?2
13 45
12 00
10 30
15 30
19 10
19 30
FEET
00630
N02&N03
N-TOTAL
MG/L
0.136
1.840
2.320
2.240
2.500
1.570
3.850
4.500
2.700
2.630
C.220
0.960
0.760
00625
TOT KJEL
N
MG/L
1.400
0.600
0.400
0.900
0.600
0.600
0.650
0.200
0.837
1.200
1.000
0.750
0.562
00610
NH3-N
TOTAL
MG/L
0.040
0.010
0.025
0.016
0.024
0.032
0.045
0.070
0.090
0.040
0.025
0.025
0.020
00671
PHOS-OIS
ORTHO
MG/L P
0.195
0.080
0.055
0.050
0.016
0.056
0.045
0.050
0.070
0.110
0.270
0.160
0.045
00665
PHOS-TOT
MG/L P
0.370
0.090
0.080
0.060
0.041)
0.090
0.070
0.066
0.075
0.180
0.390
0.210
0.085
-------
STCMtT RETRIEVAL DATE 76/03/10
DATE TIME DEPTH N03J.N03
FROM OF
TO DAY FEET
74/10/04
74/11/01
74/12/06
75/01/18
75/02/15
75/03/29
75/04/12
75/05/03
75/05/24
75/06/24
75/07/17
75/08/29
16 00
13 10
13 45
14 no
14 45
12 10
12 00
10 00
12 30
13 10
21 00
20 15
431101
21 46 45.0 098 04 00.0 4
ALICE auuEOuCT
48 JIM WELLS CO MAP
T/CORPUS CHRISTI LflKiE
WATER TREAT .ENT PLANT IN ALICE
IIE^ALES 311120'.
0000 FEET DEPTH CLASS 00
0630
t.N03
OTAL
G/L
0.192
0.160
0.064
0.048
0.050
0.035
0.015
0.070
0.095
0.270
0.220
0.120
00625
TOT KJEL
N
MG/L
0.500
0.550
1.300
0.500
0.600
0.600
0.155
0.400
0.550
0.550
0.600
0.500
00610
NH3-N
TOTAL
MG/L
0.005K
0.020
0.024
0.024
0.016
0.015
0.155
0.020
0.005K
0.015
0.035
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.125
0.110
0.095
0.088
0.080
0.065
0.060
0.070
0.070
0.100
0.130
0.145
00665
PHOS-TOT
MG/L P
0.140
0.140
0.130
0.120
0.100
0.090
0.113
0.080
0.105
0.160
0.170
0.180
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL OATE 76/03/10
4811XA AS4811XA
28 19 00.0 098 07 00.0 4
GEOSGE rfES,
48335 7.5 GEORGE rfEST
T/CORPOS CHRISTI
TIMON CREEK
11EPALES 2141204
0000 FEET DEPTH CLASS 00
P002000
DATE
FROM OF
TO DAY
TIME DEPTH
FEET
75/01/08
75/02/20
75/03/26
75/04/18
75/06/03
75/06/20
75/06/23.
75/07/01
75/07/10
75/07/21
10 00
10 00
10 30
10 00
10 00
10 00
10 00
10 00
10 00
00630
N02&N03
N-TOTAL
MG/L
0.240
0.2^0
0.456
0.850
0.100
0.050
0.200
0.050
0.250
0.075
00625
TOT KJEL
N
MG/L
4.100
19.000
15.000
6.800
1.300
6.400
9.4QO
3.600
1.900
6.600
00610
NH3-N
TOTAL
MG/L
0.089
8.700
8.700
4.400
0.055
0.320
0.075
0.025
0.065
3.400
00671
PHOS-DIS
ORTHO
MG/L P
13.500
7.300
9.700
11.500
9.500
9.800
8.600
11.000
11.500
00665
PHOS-TOT
MG/L P
13.500
7.300
9.800
10.000
12.000
10.000
10.000
12.000
11.560
12.000
50051
FLOW
RATE
INST MGD
0.125
0.130
0.126
0.160
0.160
0.140
0.145
0.140
0.154
0.110
50053
CONDUIT
FLO*-MGD
MONTHLY
0.100
0.130
0.130
0.130
0.132
0.136
0.132
0.136
0.130
0.112
------- |