U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
MSTAD RESERVOIR
VAL VERDE COUNTY
TEXAS
EPA REGION VI
WORKING PAPER No, 631
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-440
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REPORT
ON
WISTAD RESEWOIR
VAL VERDE COUNTY
TEXAS
EPA REGION VI
WORKING PAPER No, 631
WITH THE COOPERATION OF THE
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 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 11
V. Literature Reviewed 15
VI. Appendices 16
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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.
-------
m
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
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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iv
NATIONAL EUTROPHICATION SURVEY
STUDY RESERVOIRS
State of Texas
NAME
Amistad
Bastrop
Bel ton
Braunig
Brownwood
Buchanan
Caddo
•
Calaveras
Canyon
Colorado City
Corpus Christi
Diversion
Eagle Mountain
Fort Phantom Hill
Houston
Kemp
Lake O'The Pines
Lavon
Lewisvilie (Garza-Little Elm)
Livingston
COUNTY
Val Verde
Bastrop
Bell, Coryell
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
Collin
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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Tributary Sampling Site
X Lake Sampling Site
o to 20 Km
-------
AMISTAD RESERVOIR
STORE! NO. 4801
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Amistad Reservoir is mesotrophic;
i.e., moderately supplied with nutrients. Whether nutrient
enrichment is beneficial or deleterious depends on the actual
or potential effect on the uses of the reservoir. In this
regard, the Texas Water Quality Board has indicated that there
is no known impairment of the designated beneficial uses of
Amistad Reservoir.
Amistad ranked fifth in overall trophic quality when the
39 Texas reservoirs sampled in 1974 were compared using a
combination of six parameters*. Two of the water bodies had
less median total phosphorus, 11 had less and six had the same
median dissolved orthophosphorus, 36 had less median inorganic
nitrogen, none of the other reservoirs had less mean chlorophyll
a_, and none had greater mean Secchi disc transparency.
Survey limnologists did not observe any nuisance conditions
during their sampling visits. However, marked depression of
hypolimnetic dissolved oxygen occurred at stations 1, 2, and 3
in August and October.
B. Rate-Limiting Nutrient:
The algal assay results indicate that Amistad Reservoir was
phosphorus limited at the times the samples were collected (03/
05-06/74 and 10/29-30/74). The reservoir data indicate phosphorus
limitation at all sampling stations and times.
* See Appendix A.
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C. Nutrient Controllability:
1. Point sources—No known point sources impacted Amistad
Reservoir during the sampling year.
The present phosphorus loading of 0.98 g/m2/year is over
two times that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a eutrophic loading (see page 13). If Vollenweider's
eutrophic loading level is applicable to Texas reservoirs,
increasingly undesirable responses to enrichment are likely to
occur.
2. Non-point sources—The phosphorus contributions of non-
point sources accounted for all of the load during the sampling
year. The Rio Grande River contributed 92.3%, Devils River con-
tributed 1.8%, and the Pecos River contributed 1.1%. The ungaged
minor tributaries and immediate drainage contributed an estimated
3.0%.
The nutrient export rates of all of the gaged tributaries were
quite low (page 12), and it is likely that any significant reduc-
tion in non-point phosphorus contributions would be difficult to
accomplish.
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry :
1. Surface area: 262.48 kilometers2.
2. Mean depth: 16.5 meters.
3. Maximum depth: >61.0 meters.
4. Volume: 4,330.920 x 106 m3.
5. Mean hydraulic retention time: 3.8 years (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Rio Grande River 209,271.9 38.820
Evans Creek 114.5 0.019
Devil's River 10,259.0 10.900
Pecos River 91,116.1 7.410
Minor tributaries &
immediate drainage - 7,804.9 1.357
Totals 318,566.4 58.506
2. Outlet -
Rio Grande River 318,828.9** 36.180**
C. Precipitation***:
1. Year of sampling: 44.7 centimeters.
2. Mean annual: 42.9 centimeters.
t Table of metric conversions—Appendix B.
tt Ito, 1976.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of reservoir; lesser outflow due to discharge of springs
below the dam and evaporation (Ligner, 1976).
*** See Working Paper No. 175.
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III. LAKE WATER QUALITY SUMMARY
Amistad Reservoir 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
five stations on the reservoir in May, August, and October, and
four stations in March (see map, page vi). During each visit,' a single
depth-integrated (4.6 m to surface) sample was composited from the
stations for phytoplankton identification and enumeration; and during
the March and October visits, two 18.9-liter depth-integrated samples
were 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 61.0 meters at station 1,
39.3 meters at station 2, 53.6 meters at station 3, 23.2 meters at
station 4, and 42.7 meters at station 5.
The sampling results are presented in full in Appendix D and are
summarized in the following table (the August nutrient samples were
not properly preserved and were not analyzed).
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A. SUMMAHY OF PHYSICAL AND
CHEMICAL CHARACTERISTICS KOK AMISTAD LAKE
STO^ET COOE <*801
PARAMETER
TEMP (C)
OISS OXY (MG/L)
CNDCTVY (MCKOMO)
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)
CHLKPYL A (UG/L)
SECCHI (METERS)
RANGE
12.1 - 16.7
7.4 - 10.6
610. - 1875.
7.9 - 6.4
137. - 178.
0.006 - 0.013
0.005 - 0.010
0.210 - 0.680
0.020 - 0.060
0.200 - 0.400
0.240 - 0.700
0.430 - 0.880 0.633
0.2 - 1.5
3.6 - 5.8
NG ( 3/
TES
MEAN
13.5
9.0
752,
8.2
147.
0.008
0.008
0.358
0.033
0.275
0.392
0.633
0.5
4.5
5/74)
MEDIAN
13.1
9.1
C.75.
8.3
144.
0.007
0.008
0.285
0.030
0.300
0.335
0.585
0.2
4.4
-NO SAMPLING <
rt
13.7
0.4
742.
7.4
108.
0.007
0.002
0.210
0.040
0.200
0.250
0.440
1.2
2.1
5
ANuE
- 25.4
- 8 • ^
- 965.
8.4
- 146.
- 0.0*5
- 0.007
- 0.670
- 0.360
- 0.900
- 0.810
- 1.340
2.7
4.0
SITES
MEAN
21.6
6.1
861.
8.0
131.
0.013
0.004
0.360
0.079
0.348
0.439
0.708
1.8
3.3
5/14/74)
MEDIAN
23.5
6.8
865.
8.1
131.
0.010
0.003
0.350
0.050
0.300
0.430
0.590
1.7
3.4
3f*U SAMPLING ( 3/
5 SITES
rtANGE MEAN
14.4 - 27.7 22.9
0.1 - 8.6 4.7
778. - 1231. 945.
7.6 - 8.6 8.1
6/74)
MEDIAN
26.4
6.4
961.
8.2
(tOfHHtO - tHHHHtttOO OttOOOOO OO OOQO O
eooctxt _oo«eo«««oe»«i>tt«4H
OOtKHJO -OO«HXHKHX»OO(HXH»O _««t
>««««0
>0OoOO
>eee«e
>««««««
ttooooe -oooooooo«»oooo»ooo»ooo
...00. ..«•.............<
2.7 - 4.3 3.1
2.3 - 5.5 3.7
>0»0.*
2.8
3.2
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A. SUMMARY OF PHYSICAL AND CHEMICAL CHAPACTE*ISTICS FO* AMISTAO LAKE
STORdT CODE 4801
4TH SAMPLING <10/29/7<»>
PARAMETER
TEMP (C)
DISS OXY (MG/L)
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)
RANGE
16.<» - 21.5
0.2 -
446. - 1745.
7.4 -
109. - 158.
0.013 - 0.037
0.011 - 0.022
0.140 - 1.680
0.020 - 0.070
0.200 - 0.500
0.190 - 1.720
0.340 - 2.080
1.1 -
0.9 -
5
5
8
•
1
•
7
2
0
0
0
0
0
7
7
SITES
MEAN
20.4
5.4
812.
7.7
131.
0.021
0.016
0.683
0.027
0.274
0.710
0.957
2.4
1.8
MEDIAN
21.0
6.3
no.
7.8
127.
0.021
0.015
O.bVO
0.020
0.300
0.615
0.8d5
2.0
1.9
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/05/74
05/15/74
08/07/74
10/29/74
Dominant
Genera
1. Cysts
2. Chroomonas sp.
3. Coelastrum sp.
4. Cryptomonas sp.
5. Cyclotella sp.
Other genera
Total
1. Coelastrum sp.
2. Cryptomonas sp.
0 Chroomonas sp.
Dinobryon SJD.
Fragilaria sp.
Other genera
3.
4
5
Total
1. Navicula S£.
2. Chroomonas sp.
3. Oscill ataria sp.
4. Peridinium sp.
5. Centric diatoms
Other genera
1.
2.
3.
4.
5.
Total
Coelastrum sp.
Chroomonas sp.
Cryptomonas sp.
Melosira sp.
Scenedesmus sp.
Other genera
Algal Units
per ml
262
174
87
87
87
44
741
161
107
40
40
40
68
456
739
370
269
168
101
268
1,915
30
20
20
20
10
21
Total
121
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2. Chlorophyll a -
C.
Sampling
Date
03/05-06/74
05/14-15/74
08/06-07/74
Station
Number
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
a. March sample -
(1). Stations 1 and 2 -
Chlorophyll a
10/29-30/74
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Cone, (mg/1)
<0.005
<0.055
<0.055
<0.055
Inorganic N
Cone, (mg/1)
0.299
0.299
1.299
1.299
0.2
0.2
0.3
1.5
1.2
2.2
1.4
2.7
1.7
2.7
2.8
2.8
4.3
2.9
1.1
2.0
3.3
1.8
3.7
Maximum yield
(mg/1-dry wt.)
0.1
5.7
11.3
0.1
-------
(2). Stations 3 and 4 -
2.
Spike (mg/1)
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
Control
0.050 P
0.050 P + 1.
1.0 N
b. October
<0.005
<0.055
0 N <0.055
<0.005
sample -
(1). Stations 1, 2, and
Spike (mg/1)
Control
0.050 P
0.050 P + 1.
1.0 N
Ortho P
Cone, (mg/1)
0.009
0.059
0 N 0.059
0.009
0.525
0.525
1.525
1.525
3 -
Inorganic N
Cone, (mg/1)
0.424
0.424
1.424
1.424
0.1
10.8
11.4
0.1
Maximum yield
(mg/1 -dry wt.)
0.3
12.5
20.0
0.2
(2). Stations 4 and 5 -
Spike (mg/1)
Control
0.050 P
0.050 P + 1.
1.0 N
Discussion -
Ortho P
Cone, (mg/1)
0.005
0.055
0 N 0.055
0.005
The control yields of the
Inorganic N
Cone, (mg/1)
(1.058)*
(1.058)
(2.058)
(2.058)
Maximum yield
(mg/1 -dry wt. )
0.2
13.0
15.6
0.2
assay alga, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of Amistad Reservoir was low in March and moderate in October.
The significant increases in yields with the addition of ortho-
phosphorus and the lack of changes in yields when only nitrogen
was added indicate phosphorus limitation.
* Sample for nitrogen analysis was inadvertently discarded. The reser-
voir data indicate a mean inorganic nitrogen concentration of 1.058 mg/1.
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10
The reservoir data also indicate phosphorus limitation;
i.e., the mean inorganic nitrogen to orthophosphorus ratios
were 44 to 1 or greater in March, May, and October.
-------
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 April 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 reservoir.
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*.
Because of lack of flow, Evans Creek was not sampled, and the
nutrient loads for this stream and the unsampled "minor tributaries
and immediate drainage" ("II" of U.S.G.S.) were estimated using the
means of the nutrient loads at stations C-l and E-l, in kg/km2/year,
and multiplying the means by the Evans Creek and II areas in km2.
No known point sources impacted Amistad Reservoir during the sam-
pling year.
See Working Paper No. 175.
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12
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Rio Grande River 237,445 92.3
Evans Creek 115 <0.1
Devil's River 4,585 1.8
Pecos River 2,750 1.1
b. Minor tributaries & immediate
drainage (non-point load) - 7,805 3.0
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 4,595 1.8
Total 257,295 100.0
2. Outputs -
Lake outlet - Rio Grande River 14,320
3. Net annual P accumulation - 242,975 kg.
See Working Paper No. 175.
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13
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Rio Grande River 2,106,250 49.6
Evans Creek 5,555 0.1
Devil's River 938,080 22.1
Pecos River 533,080 12.6
b. Minor tributaries & immediate
drainage (non-point load) - 378,540 8.9
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 283,375 6.7
Total 4,244,880 100.0
2. Outputs -
Lake outlet - Rio Grande River 1,193,690
o
3. Net annual N accumulation - 3,051,190 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Rio Grande River 1 10
Devil's River <1 91
Pecos River <1 6
See Working Paper No. 175.
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14
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/in2/yr 0.98 0.93 16.2 11.6
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Amistad Reservoir:
"Dangerous" (eutrophic loading) 0.40
"Permissible" (oligotrophic loading) 0.20
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15
V. LITERATURE REVIEWED
Ito, Cruz, 1976. Personal communication (morphometric data).
Intn. Boundary & Water Comm., El Paso.
Ligner, James J., 1976. Personal communication (tributary flows)
Intn. Boundary & Water Comm., El Paso.
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.
-------
VI. APPENDICES
16
APPENDIX A
LAKE RANKINGS
-------
PERCENT or LAKES
LAKE'
CODE LAKE NAME
MIGHER VALUED (NUMBER OF LAKES
HICME.H
AMISTAO LAKE
4802 BASTROP LAKE
4803 8ELTON RESERVOIR
4804 BRAUNIG LAKE
4805 BROWNWOOD 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
4820 LIVINGSTON LAKE
4821 LYNDON 8 JOHNSON LAKE
4822 MEDINA LAKE
4823 LAKE MEREDITH
4824 PALESTINE LAKE
4825 POSSUM KINGDOM RESERVOIR
4826 SAN ANGELO 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)
t 25)
( 18)
( 10)
( 17)
( 37)
( 14)
( 3)
( 26)
( 27)
( 9)
( 13)
( 29)
( 6)
( 20)
( 8)
( 1)
( 14)
( 37)
f 31)
( 20)
( 28)
( 5)
( 22)
( 19)
MEDIAN
INO'G N
5
76
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)
I 38)
( 3)
( 28)
( 18)
( 3D
( 33)
f 25)
( 5)
( 22)
( 6)
( 28)
< ID
( 1)
( 4)
( 0)
( 33)
( 12)
( 33)
( 17)
( 15)
(3D
500-
MEAN SEC
100
82
97
50
29
74
42
47
95
26
18
32
34
21
16
55
0
66
3
39
53
89
71
63
84
8
68
45
( 38)
( 3D
( 37)
( 19)
( 11)
( 28)
( 16)
( 18)
( 36)
( 10)
( 7)
( 12)
( 13)
( 8)
( 6)
< 21)
( 0)
( 25)
< 1)
< 15)
( 20)
( 34)
( 27)
( 24)
( 32)
< 3)
( 26)
( 17)
MEAN
CHLOKA
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
( 38)
( 18)
( 26)
< 3)
( 33)
( 24)
( 12)
( 4)
( 37)
( 16)
( 5)
< ID
( 30)
( 28)
( 13)
( 21)
( 9)
( 15)
( 32)
( 10)
( 25)
( 14)
( 36)
( 20)
( 22)
( 0)
( 29)
( 19)
16-
MIN DO
39 1
17 1
17 1
49 (
58 <
17 (
76 1
67 1
49 <
88 1
61 1
97 1
79 1
95 1
55 1
84 1
72 i
17 i
100 i
17 i
39 i
17
39
49
17
88
17
17
; 14)
[ 0)
: 0)
17)
; 22)
: o>
; 29)
: 25)
: 17)
: 33)
1 23)
: 37)
; 30)
I 36)
t 21)
[ 32)
I 27)
! 0)
I 38)
t 0)
I 14)
( 0)
( 14)
( 17)
( 0)
( 33)
( 0)
( 0)
MEDIAN
DISS OrtThO 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
( 21)
< 34)
( 3D
( 2)
( 3D
( 14)
( 10)
( 34)
( 37)
( 14)
< 3)
( 21)
( 28)
( 6)
( 7)
( 34)
( 4)
( 17)
( 7)
( 1)
( 10)
( 38)
( 21)
( 19)
( 21)
( 17)
( 21)
( 28)
INOtX
NO
402
393
384
159
394
261
297
362
445
310
155
372
430
296
173
423
139
298
258
91
238
342
441
302
387
200
322
321
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES *ITH HIGHER VALUES)
LAKE
CODE LAKE NAME
4829 SOMERVILLE LAKE
4830 STAMFORD LAKE
4831 STILLHOUSE HOLLOW RESE*V
4832 TAWAKONI LAKE
4833 TEAARKANA LAKE
4834 TEXOMA LAKE
4835 TRAVIS LAKE
4836 TRINIDAD
4837 TWIN BUTTES RESERVOIR
4838 WHITE RIVER RESERVOIR
4839 WHITNEY LAKE
MEDIAN
TOTAL P
29
18
88
32
11
39
88
0
59
84
63
( 11)
( 7)
( 33)
< 12)
( 4)
( 14)
< 33)
( 0)
( 22)
( 32>
( 24)
MEDIAN
INORG N
55
97
37
70
51
34
21
61
21
61
51
( 21)
'. 37)
( 14)
( 26)
( 19)
( 13)
( 7)
( 22)
( 7)
( 22)
( 19)
500-
MEAN
24
5
87
37
13
61
92
11
58
76
79
SEC
( 9)
( 2)
( 33)
( 14)
< 5)
( 23)
( 35)
( 4)
( 22)
( 29)
( 30)
MEAN
CHLORA
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
67
82
17
63
72
17
17
92
49
17
17
( 25)
( 3D
( 0>
( 24)
( 27)
( 0)
( 0)
( 35)
< 17)
( 0)
( 0)
MEDIAN
DISS U^THO H
30
39
51
30
13
21
84
0
63
63
76
( 10)
( 14)
( 19)
( 10)
( 5)
I 7)
( 31)
( 0)
( 21)
( 21)
( 28)
INDEX
NO
20tJ
259
372
2*3
176
217
J84
169
311
390
357
-------
LAKES PtAN'KEO Bf ;NOt.x NOS.
RANK LAKE CODE LAKE NAME
2 4823
3 4813
4 4816
5 4801
6 4805
7 480?
8 4838
9 4825
10 4835
11 4803
12 4831
13 4812
14 4808
15 4839
16 4822
17 4827
18 4828
19 4837
20 4810
21 4824
22 4818
23 4807
24 4814
25 4806
26 4830
27 4819
28 4832
c&Nro.N RESERVOIR
LAKE MEREDITH
EAGLE MOUNTAIN LAKE
KEMP LAKE
AMISTAO LAKE
BROnNWOOD LAKE
BASTROP LAKE
WHITE RIVER RESERVOIR
POSSUM KINGDOM RESERVOIR
TRAVIS LAKE
BELTON RESERVOIR
STILLHOUSE HOLLOW RESERV
DIVERSION LAKE
CALAVERAS LAKE
WHITNEY LAKE
MEDINA LAKE
SAM RAYBURN RESERVOIR
E V SPENCE RESERVOIR
TWIN BUTTES RESERVOIR
LAKE COLORADO CITY
PALESTINE LAKE
LAKE OF THE PINES
CADOO LAKE
FT PHANTOM HILL LAKE
LAKE BUCHANAN
STAMFORD LAKE
LAVON RESERVOIR
TArfAKON.1 LAKE
INDEX NO
445
441
430
423
402
394
393
390
387
384
384
372
372
362
357
342
322
321
311
310
302
298
297
296
261
259
258
253
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29 4eJ21 LYNDON B JOHNSON LAKE 238
30 4834 TEXOMA LAKE 21?
31 4829 SOMEHVILLE LAKE 208
32 4826 SAN ANGELO RESERVOIR 200
33 4833 TEXAKKANA LAKE 176
34 4815 GARZA LITTLE ELM RESERVO 173
35 4836 TRINIDAD 169
36 4804 BRAUNIG LAKE 159
37 4811 CORPUS CRIST1 LAKE 155
38 4817 HOUSTON LAKE 139
39 4820 LIVINGSTON LAKE 91
-------
LAKES RANKED BY INDE* NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 4809 CANVON RESERVOIR 445
2 4o23 LAKE MEREDITH 441
3 4813 EAGLE MOUNTAIN LAKE 430
4 4816 KEMP LAKE 423
5 4801 AMISTAO LAKE 402
6 4805 BROwNWOOD LAKE 394
7 4802 8ASTRUP LAKE 393
8 4838 »HITE RIVER RESERVOIR 390
9 4825 POSSUM KINGOOM RESERVOIR 387
10 4835 TRAVIS LAKE 384
11 4803 8ELTON RESERVOIR 384
12 4831 STILLHOUSE HOLLOW RESERV 372
13 4812 DIVERSION LAKE 372
14 4808 CALAVERAS LAKE 362
15 4839 WHITNEY LAKE 357
16 4822 MEDINA LAKE 342
17 4827 SAM RAYBURN RESERVOIR 322
18 4828 E V SPENCE RESERVOIR 321
19 4837 TWIN BUTTES RESERVOIR 311
20 4810 LAKE COLORADO CITY 310
21 4824 PALESTINE LAKE 302
22 4818 LAKE OF THE PINES 298
23 4807 CADOO LAKE 297
24 4814 FT PHANTOM HILL LAKE 296
25 4806 LAKE BUCHANAN 261
26 4830 STAMFORD LAKE 259
27 4819 LAVON RESERVOIR 258
28 4832 TAdAKONJ LAKE 253
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29 4821 LYNDON 8 JOHNSON LAKE 238
30 483<» TEXOMA LAKE 21?
31 4829 SOMEWVILLE LAKE 208
32 4826 SAN ANGELO HESERVOIR 200
33 4833 TEXAKKANA LAKE 176
34 4815 GARZA LITTLE ELM RESERvO 173
35 4836 TRINIDAD 169
36 4804 BRAUNIG LAKE 159
37 4811 CORPUS CRIST1 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
Cubic meters x 8.107 x 10"4 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
i
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
FLOW INFORMATION FOR TEXAS
05/03/76
LA
-------
TRIBUTARY FLO* INFORMATION FOR
05/03/76
LAKE CODE <*801 AMISTAO
MEAN MONTHLY FLOwS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLO* DAY
4801B1
4801C1
4801E1
4801ZZ
FLO* DAY
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
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
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
3.143
0.255
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.212
0.0
239.561
18.831
14.130
12.120
11.100
12.006
10.392
9.968
10.336
9.826
13.281
11.525
382.277
52.386
28.317
17.443
13.479
12.969
10.194
9.288
8.382
6.994
11.610
8.325
188.307
14.725
11.044
9.628
8.778
9.345
8.212
7.929
7.929
7.646
10.477
9.061
7
8
7
6
7
6
1
11
17
3
16
7
7
8
7
6
7
6
1
11
17
5
16
7
7
8
' 7
6
7
6
1
11
17
5
16
7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
6.966
15.036
15.319
12.374
11.553
12.799
10.704
10.222
9.628
9.968
9.543
12.091
4.106
72.491
33.980
18.916
14.555
14.470
10.930
9.543
7.617
7.306
6.711
7.674
FLO* JAY
FLOW
23
0.0
23
9.769
23
8.863
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 7b/02/il
480101
29 27 35.0 101
AMISTAD Lft"£
TEXAS
03 20.0
DATE TIME DEPTH
FROM OF
TO DAY FEET
74/03/05 15
15
15
15
15
15
15
74/05/14 15
15
15
15
15
15
74/08/06 15
15
15
15
15
15
15
15
74/10/29 14
14
14
14
14
14
14
14
14
14
00 0000
00 0010
00 0030
00 0060
00 0100
00 0150
00 0200
00 0000
00 0005
00 0020
00 0045
00 0090
00 0170
45 0000
45 0005
45 0015
45 0047
45 0065
45 0085
45 0125
45 0170
15 0000
15 0005
15 0020
15 0040
15 0060
15 0085
15 0090
15 0120
15 OU5
15 0176
00010
WATER
TEMP
CENT
13.2
13.0
12.8
12.5
12.3
12.2
12.2
24.0
23.7
23.5
21.0
15.1
13.7
26.5
26.5
26.4
26.3
23.6
16.6
14.8
14.4
21.0
21.0
21.0
21.0
20.9
20.9
20.1
18.3
16.4
16.4
11EPALES
00300
DO
MG/L
9.2
9.2
9.2
9.0
10.6
9.0
7.6
8.0
7.4
6.0
6.4
7.6
7.6
7.6
7.2
4.0
0.6
2.4
2.8
7.2
7.2
7.2
7.4
7.4
6.0
2.2
1.4
0.2
0.2
00077 00094
TRANSP CNOUCTVY
SECCHI FIELD
INCHES MICROMHO
164 645
642
655
667
670
672
677
156 865
865
862
856
760
742
216 998
997
998
997
967
814
787
782
107 708
708
710
714
719
733
833
831
747
746
4
00400
PH
SU
6.40
8.30
8.30
8.30
8.30
8.30
8.30
8.30
8.40
8.40
8.20
8.00
7.90
8.40
8.40
8.40
8.40
7.70
7.70
7.60
7.90
7.96
7.95
7.94
7.92
7.87
7.80
7.47
7.39
7.42
7.42
00410
T ALK
CAC03
MG/L
144
145
144
143
144
144
144
129
129
127
131
136
137
123
124
114
117
118
122
123
134
150
152
2111202
0205
00610
NH3-N
TOTAL
MG/L
0.030
0.030
0.030
0.040
0.030
0.030
0.030
0.090
0.050
0.060
0.060
0.050
0.050
0.030
0.030
0.020
0.020
0.020
0.020K
0.030
0.020K
0.040
0.050
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.300
0.300
0.300
0.200
0.300
0.300
0.200
0.600
0.200
0.200
0.200K
0.200K
0.200K
0.300
0.300
0.200
0.200
0.200
0.300
0.200
0.200K
0.200K
0.200K
00630
N02^N03
N-TOTAL
MG/L
0.250
0.270
0.260
0.260
0.240
0.240
0.230
0.250
0.240
0.250
0.280
0.380
0.390
0.460
0.470
0.470
0.480
0.510
0.620
0.810
0.680
0.170
0.140
00671
PMOS-OIS
ORTHO
MG/L P
"o.ooe
'0.009
0.008
0.008
.0.005
0.006
0.006
'0.006
.0.002
0.003
0.003
0.002
0.002
0.013
0.014
'0.013
0.012
'0.014
0.015
0.017
0.019
'0.018
0.018
K VALUE KNOWN TO 6E
LESS THAN INDICATED
-------
STOfEV RETRIEVAL OAlc 7f../02/li
460101
29 27 35.0 101 03 20.0
AMISTAO Lt.vE
48465 TEXAS
11EPALES
4
2111202
0205 FEET
DEPTH
DATE
FROM
TO
74/03/05
74/05/14
74/08/06
74/10/29
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
15
15
15
15
15
15
15
15
15
15
15
15
IS
15
15
14
14
14
14
14
14
14
14
14
14
14
14
00
00
00
00
00
00
00
00
00
00
00
00
00
45
45
15
15
15
15
15
15
15
15
15
15
15
15
0000
0010
0030
0060
0100
0150
0200
0000
0005
0020
0045
0090
0170
0000
0047
0000
0001
0005
0010
0020
0040
0060
0085
0090
0120
0145
0176
MG/L P
'0,
•o,
0.
0,
0,
'o,
0,
'0,
0.
*0,
0,
T),
0,
0,
0,
T>,
0,
•o,
0,
1),
0,
'0,
0,
.006
,007
.006
.006
,006
.006
.006
.011
.008
.008
.007
.007
.008
,013
.030
.028
,027
,028
.029
.018
.033
.029
.029
UG/L PERCENT
0.2
..-,
1.2
1.0
2.7
1.0
1.1
50.0
1.0
-------
STORET RETRIEVAL OAT£ 76/0?/11
480102
29 33 30.0 100 58 30.0
AMISTAD LArxE
48465 TLXAS
DATE
FROM
TO
74/03/05
74/05/14
74/08/07
74/10/29
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
14
14
14
14
14
14
15
15
15
15
15
15
17
17
17
17
17
17
17
17
17
17
13
13
13
13
13
13
13
13
35
35
35
35
35
35
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
30
30
30
30
30
30
30
30
0000
0010
0030
0060
0090
0124
0000
0005
0020
0035
0060
0115
0000
0005
0015
0029
0040
0055
0070
0085
0100
0115
0000
0005
0020
0040
0060
0080
0090
0129
CENT
16
15
12
12
12
12
24
24
24
23
16
14
27
27
27
26
25
24
21
17
16
15
21
21
20
20
20
20
19
17
.7
.0
.8
.1
.1
.1
.8
.3
.2
.5
.9
.0
.7
.3
.0
.5
.1
.4
.3
.0
.1
.0
.2
.2
.9
.9
.7
.3
.6
.1
11EPALES
00300
DO
MG/L
9.4
9.0
8.8
8.8
8.8
8.4
8.0
8.0
5.0
5.0
6.1
8.6
7.6
7.0
4.4
3.6
0.4
0.1
0.1
0.4
6.0
6.2
5.8
5.8
5.8
2.8
1.2
0.4
.00077 00094
TRftNSP CNDUCTVY
SECCHl FIELD
INCHES MICROMHO
140 664
654
610
625
632
644
156 836
830
830
813
753
760
120 829
824
858
946
955
947
874
804
792
778
73 446
446
451
469
544
544
631
718
4
00400
PH
su
8.30
8.30
8.30
8.30
8.30
8.30
8.20
8.30
8.30
8.30
7.90
7.80
8.30
8.50
8.40
8.40
7.90
7.90
7.60
7.60
7.60
7.60
7.75
7.75
7.65
7.67
7.72
7.47
7.43
7.4y
00410
T ALK
CAC03
MG/L
147
144
148
144
144
143
131
131
130
131
139
139
130
127
127
126
125
132
135
154
2111202
0130
00610
NH3-N
TOTAL
MG/L
0.020
0.020
0.020
0.050
0.040
0.060
0.070
0.050
0.050
0.050
0.050
0.050
0.030
0.020
0.020K
0.030
0.020
0.030
0.020K
0.070
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.400
0.300
0.300
0.300
0.400
0.300
0.500
0.200
0.300
0.200
0.200K
0.200K
0.400
0.300
0.300
0.200
0.200
0.200
0.200K
0.200K
00630
N02VN03
N-TOTAL
MG/L
0.470
0.330
0.420
0.300
0.260
0.270
0.360
0.340
0.320
0.350
0.390
0.400
0.590
0.590
0.580
0.530
0.440
0.600
0.520
0.220
00671
PMOS-OIS
ORTHO
MG/L P
0.007
0.007
0.007
0.009
0.009
0.010
0.003
0.002K
0.002K
0.002K
0.002K
0.002
0.014
0.012
0.013
0.014
0.014
0.020
0.018
0.022
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STGRET RETRIEVAL DATE 76/0?/li
29 33 30.0 100 58 30.0
AMISTAD LA..E
TEAAS
11EFALES
4
2111202
0130 FEET
DEPTH
DATE
FROM
TO
74/03/05
74/05/14
74/08/07
74/10/29
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
14
14
14
14
14
14
15
15
15
15
15
15
17
17
17
13
13
13
13
13
13
13
13
13
13
35
35
35
35
35
35
45
45
45
45
45
45
45
45
45
30
30
30
30
30
30
30
30
30
30
0000
0010
0030
0060
0090
0124
0000
0005
0020
0035
0060
0115
0000
0003
0029
0000
0001
0005
0009
0020
0040
0060
0080
0090
0129
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.007
.009
.007
.008
.011
.012
.010
.008
.008
.008
.010
.015
.014
.020
.013
.014
.013
.016
.020
.025
UG/L PERCENT
0.2
2.2
1.0
2.8
50.0
1.0
2.0
50.0
1.0
-------
STORET KETKIEVAL OATtl 76/C2/1!
DATE TIME DEPTH
FROM OF
TO DAY FEET
74/03/06 14
14
14
14
14
74/05/15 10
10
10
10
10
74/08/06 14
14
14
14
14
14
14
14
14
14
74/10/29 15
15
15
15
15
15
15
15
15
15
50 0000
50 0010
50 0035
50 0070
50 0130
55 0000
55 0005
55 0040
55 0065
55 0130
50 0000
50 0005
50 0015
50 0042
50 0055
50 0070
50 0085
50 0110
50 0140
50 0170
15 0000
15 0005
15 0020
15 0040
15 0060
15 0080
15 0105
15 0120
15 0135
15 0176
00010
WATER
TEMP
CENT
16.0
15.0
13.3
12.5
12.4
25.2
25.1
23.4
19.7
14.2
27.5
27.2
26.9
26.8
26.7
22.2
16.7
15.1
14.6
14.5
21.3
21.3
21.2
21.0
21.0
21.0
21.5
19.7
17.2
16.7
430103
29 30 50.0 101
AM1STAO Lfcrvt
t8465 TEXAb
11EPALES
00300
DO
MG/L
9.2
9.4
9.2
8.8
7.8
7.4
5.6
5.6
7.4
7.6
7.0
7.0
7.0
1.6
1.0
1.4
1.6
i-.e
7.8
7.8
7.8
7.2
7.8
6.4
2.8
2.8
0.8
0.4
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICKOMHO
180 709
685
694
701
717
120 918
918
903
884
770
180 1028
1018
1017
1014
1014
936
825
804
797
799
100 710
710
709
702
702
699
1745
1439
860
779
4
00400
PH
su
8.20
8.20
8.20
8.15
8.10
8.25
8.20
8.10
7.80
7.70
8.50
8.50
8.40
8.40
8.30
7.90
7.80
7.75
7.70
7.70
8.07
8.07
8.04
7.95
7.92
7.88
7.42
7.41
7.44
7.46
00410
T ALK
CAC03
MG/L
141
137
140
140
141
127
127
126
135
137
113
111
112
111
109
111
145
146
143
145
10 15.0
2111202
QUO
00610
NH3-N
TOTAL
MG/L
0.040
0.020
0.020
0.040
0.050
0.040
0.040
0.040
0.060
0.050
0.040
0.020K
0.020K
0.020
0.020
0.020
0.020K
0.020K
0.030
0.040
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.300
0.300
0.300
0.200
0.300
0.300
0.300
0.300
0.300
0.200
.
0.500
0.200
0.200
0.200
0.200
0.200K
0.300
0.300
0.300
0.200
00630
N02«.N03
N-TOTAL
MG/L
0.210
0.220
0.240
0.300
0.330
0.210
0.220
0.220
0.370
0.390
0.490
0.490
0.500
0.530
0.530
0.560
0.730
0.690
0.540
0.290
00671
PnOS-DIS
OHTHO
MG/L P
0.009
0.009
0.006
0.010
0.010
0.002K
0.003
0.004
0.003
0.003
0.013
0.012
0.012
0.011
0.012
0.013
0.016
0.017
0.017
0.016
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOSET RETRILVAu DATE ?
480103
29 30 50.0 101
AMtSTAD LA,-£
46465 TEXAS
10 15.0
2111202
0140 FEET
DEPTH
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
74/03/06
74/05/15
74/08/06
74/10/29
14
14
14
14
14
10
10
10
10
10
14
14
14
15
15
15
15
15
15
15
15
15
15
15
15
50
50
50
50
50
55
55
55
55
55
50
50
50
15
15
15
15
15
15
15
15
15
15
15
15
0000
0010
0035
0070
0130
0000
0005
0040
0065
0130
0000
0003
0042
0000
0001
0005
0020
0021
0040
0060
0080
0105
0120
0135
0176
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.006
.006
.006
.006
.008
.008
.013
.008
.008
.007
.014
.014
.014
.013
.023
.013
.018
.020
.018
.016
32217
CHLSPHYL
A
UG/L
0.3
1.4
2.8
3.3
00031
INCOT LT
REMNING
PERCENT
50.0
1.0
50.0
1.0
-------
STOPET RETRIEVAL OACE 75/02/11
430104
29 i*l 50.0 101 22 20.0
AMISTAD LA'1
48465 TtAAS
DATE
FROM
TO
74/03/06
74/05/15
74/08/07
74/10/30
00010
TIME DEPTH WATEK
OF TEMP
DAY FEET
15
15
IS
15
15
15
09
09
09
09
09
13
13
13
13
13
09
09
09
09
09
09
45
45
45
45
45
45
40
40
40
40
40
10
10
10
10
10
05
05
05
05
05
05
0000
0010
0020
0040
0060
0075
0000
0005
0020
0060
0073
0000
0005
0027
0050
0072
0000
0005
0020
0035
0050
0076
CENT
16
14
14
14
13
13
25
25
24
22
20
27
27
27
27
27
21
21
21
20
20
.3
.8
.5
.2
.4
.6
.4
.2
.7
.7
.6
.3
.2
.2
.2
.2
.4
.4
.3
.6
.1
11EPAL.ES
00300
DO
MG/U
9.4
9.6
9.0
7.4
7.8
7.2
6.4
2.8
0.4
6.8
6.8
7.0
7.0
5.2
7.2
7.0
7.0
7.0
5.6
5.4
00077 00094
TRANSP CNOUCTVY
SECCHI FIELD
INCHES MICROMHO
228 850
831
836
868
815
1875
84 960
965
949
905
927
90 1126
1126
1126
1126
1231
36
975
973
963
901
1415
4
00400
PH
su
8.20
8.20
8.20
8.10
7.95
8.00
8.05
8.00
8.00
7.60
7.45
8.40
8.40
8.20
8.40
8.10
7.94
7.92
7.90
7.83
7.71
00410
T ALK
CAC03
MG/L
149
151
155
161
178
159
146
141
142
136
108
145
157
156
157
144
158
211
ooao
00610
NH3-N
TOTAL
MG/L
0.040
0.020
0.040
0.040
0.020
0.040
0.100
0.110
0.100
0.140
0.360
0.040
0.020
0.020
0.020
0.030
0.020
1202
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.300
0.200
0.200
0.200
0.200K
0.200
0.700
0.400
0.500
0.500
0.900
0.400
0.300
0.300
0.300
0.300
0.400
00630
N02&N03
N-TOTAL
MG/L
0.510
0.510
0.560
0.610
0.680
0.630
0.640
0.610
0.620
0.670
0.350
1.680
0.980
0.980
0.960
0.860
0.990
00671
PHOS-OIS
ORTHO
MG/L P
0.010
0.008
0.009
0.009
0.006
0.006
0.003
0.007
0.005
0.004
0.007
0.018
0.019
0.019
0.019
0.020
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL OAfE ?&/o2/ii .
480104
29 41 50.0 101 22 20.0
AM I ST AO LAf\i_
48465 TEAAS
11EPALES
4
2111202
0080 FEET DEPTH
OATE
FROM
TO
74/03/06
74/05/15
74/08/07
74/10/30
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL 1NCDT LT
OF A REMMNG
DAY FEET
15
15
15
15
15
15
09
09
09
09
09
13
13
13
09
09
09
09
09
09
09
09
45
45
45
45
45
45
40
40
40
40
40
10
10
10
05
05
05
05
05
05
05
05
0000
0010
0020
0040
0060
0075
0000
0005
0020
0060
0073
0000
0002
0027
0000
0001
0005
0008
0020
0035
0050
0076
MG/L P
0,
0,
0,
0.
0,
0.
0,
0,
0,
0,
0,
0,
0.
0,
0.
0,
0.
.008
.012
.013
.010
.006
.013
.Old
.023
.020
.022
.045
.037
.021
.024
.022
.028
.023
UG/L PERCENT
1.5
2.7
4.3
50.0
1.0
1.8
50.0
1.0
-------
STOftET RETRIEVAL DATE 76/0?/ll
460105
29 37 30.0 101
AMISTAD LA"E
<»84b5 TEXAS
15 00.0
00010
DATE
FROM
TO
74/05/15
74/08/07
74/10/30
TIME DEPTH
OF
DAY
10
10
10
10
10
14
14
14
14
14
14
14
14
14
08
08
08
08
08
08
08
08
FEET
15
IS
15
15
15
00
00
00
00
00
00
00
00
00
15
15
15
15
15
15
15
15
0000
0005
0035
0075
0130
0000
0005
0015
0038
0055
0070
0085
0110
0140
0000
0005
0015
0030
0050
0080
0110
0139
HATER
TEMP
CENT
25
25
24
18
14
27
27
27
27
26
24
16
15
15
21
21
21
21
21
21
20
20
.3
.3
.3
.7
.8
.1
.0
.0
.0
.9
.8
.6
.3
.0
.3
.3
.3
.3
.3
.3
.9
.6
11EPALES
00300
00
MG/L
8.0
7.4
0.6
5.0
7.8
7.8
7.6
7.4
7.0
1.4
1.2
0.4
0.6
7.2
7.6
7.2
7.2
7.2
6.8
6.0
5.2
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
132 944
943
927
753
811
126 1035
1034
1032
1031
1029
1130
636
820
821
34 685
684
685
686
694
743
1483
1654
4
00400
PH
su
8.20
8.20
8.20
7.60
7.70
8.60
8.60
8.60
8.50
8.60
7.80
7.90
7.90
7.90
7.91
7.92
7.90
7.89
7.87
7.76
7.72
7.69
00410
T ALK
CAC03
MG/L
124
125
124
121
139
119
117
117
117
117
124
148
147
2111202
0140
00610
NH3-N
TOTAL
MG/L
0.060
0.050
0.060
0.190
0.050
0.020
0.020K
0.020
0.020
0.020K
0.020K
0.040
0.050
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.500
0.300
0.300
0.500
0.200
'
0.300
0.300
0.300
0.300
0.300
0.300
0.400
0.400
00630
N02&N03
N-TOTAL
MG/L
0.230
0.210
0.230
0.360
0.430
0.780
0.790
0.800
0.800
0.810
0.960
1.430
1.630
00671
PHOS-DIS
ORTHO
MG/L P
0.004
0.007
0.006
0.003
0.004
0.013
0.012
0.015
0.015
0.015
0.017
0.018
0.018
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STO«ET RETRIEVAL DAT£ 70/02/11
430105
29 37 30.0 101 15 00.0
AMISUD LAKu
484t>5 TEXAS
DATE
FROM
TO
74/05/15
7<»/08/07
74/10/30
00665 32217 00031
TIME DEPTH PHOS-TOT CHLPPHYL INCDT LT
OF A REMIMING
DAY FEET
10
10
10
10
10
14
14
14
08
08
08
08
08
08
08
08
IS
15
15
15
15
00
00
00
15
15
15
15
15
15
15
15
0000
0005
0035
0075
0130
0000
0003
0038
0000
0005
0015
0030
0050
0080
0110
0139
MG/L P
0.011
0.012
0.008
0.025
0.011
0.025
0.021
0.019
0.019
0.021
0.021
0.022
0.02S
UG/L PERCENT
1.7
1.0
2.9
50.0
1.0
3.7
HEPALES
4
2111202
0140 FEET
DEPTH
-------
APPENDIX E
TRIBUTARY DATA
-------
STGRCT HETRIEVAL DATE 76/03/10
DATE TIME DEPTH N02
FROM OF
TO DAY FEET
74/10/08
74/11/07
74/12/06
75/01/07
75/02/06
75/03/01
75/04/11
75/04/23
75/05/17
75/06/05
75/07/16
75/03/07
19
14
11
15
10
15
11
11
11
13
10
11
50
00
45
45
15
00
30
10
15
20
30
45
29 2k 55.0 101 03 25.0 4
KIO GRANDE
460il 15 DEVILS *IVE*
0/6*ISTAJ LAKE
TURBINE DISCH AT AMISTAD JAM POWERHOUSE
11£PALES 2111204
0000 FEET DEPTH CLASS 00
0630
oN03
OTAL
IG/L
2.860
0.443
0.552
0.528
0.560
0.625
0.630
0.650
0.630
0.620
0.540
0.450
00625
TOT KJEL
N
MG/L
0.600
1.300
0.500
0.500
0.200
0.300
0.750
l.COO
0.200
1.300
0.400
0.525
00610
NH3-N
TOTAL
MG/L
0.040
0.045
0.024
0.048
0.020
C.025
0.045
0.190
0.015
0.130
0.015
0.010
00671
PHOS-DIS
ORTHO
MG/L P
0.005
0.010
0.010
0.005K
0.020
0.005K
0.005
0.005K
0.005
0.005K
0.010
0.005K
00665
PHOS-TOT
MG/L P
0.010K
0.010
0.022
0.010K
0.020
0.010K
0.010K
0.010K
0.010K
0.010
0.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 7fc/c3/ic
DATE TIME DEPTH N02*>N03
FROM OF
TO DAY FEET
74/09/07
74/10/08
74/11/07
74/12/06
75/01/07
75/02/06
75/03/01
75/04/11
75/04/23
75/05/17
75/06/05
75/07/16
75/08/07
14 ?0
12 30
14 30
12 30
14 30
11 00
16 00
11 55
11 45
12 20
12 20
11 00
11 00
29 46 05.0 101 »1 10.0 4
RIO uRiNUt RIVER
•*<3 15 LANGTHf
T/AMISTAO LAKE
0.5 MI S Or OIPT RD 11.5 MI Srf LANGT*r
11F.PALES 211120*
0000 FEET DEPTH CLASS 00
0630
*>N03
OTAL
G/L
0.720
2.030
0.890
0.760
0.720
0.672
0.980
1.000
0.780
0.890
0.710
1.350
0.950
00625
TUT KJEL
N
MG/L
0.400
1.800
0.700
0.800
0.800
0.200
0.650
O.R50
0.300
1.600
1.020
0.450
00610
NH3-N
TOTAL
MG/L
0.080
0.040
0.020
0.024
0.040
0.008
0.015
0.030
0.085
0.041
0.020
0.120
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.015
0.015
o.ooe
0.005K
0.008K
0.015
0.010
0.005K
0.020
0.005
0.025
0.035
00665
PHOS-TOT
MG/L P
0.020
1.350
0.210
0.080
0.030
0.020
0.240
0.010
0.050
O.b70
0.010K
0.700
0.165
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL OAfiL 76/03/10
•4 = 0101
29 40 35.0 101 00 10.0 4
DEVILS RIVoH
«+6 - 15 FEELY
T/AMISTAO LAKE
t<0880Af*0 XING 10.5
11EPALE5
0000 FEET DEPTH
MI £ OF COMSTOCK
2111204
CLASS 00
DATE
FROM
TO
74/09/07
74/10/08
74/11/07
74/12/06
75/01/07
75/02/06
75/03/01
75/04/11
75/04/23
75/05/17
75/06/05
75/07/16
75/08/07
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
13
15
13
15
11
15
13
12
11
11
12
24
00
45
40
30
05
20
00
35
35
50
10
HG/L
1
2
2
2
2
3
2
2
2
2
1
1
2
.500
.640
.320
.400
.400
.000
.300
.200
.200
.100
.950
.880
.000
MG/L
0.
0.
0.
0.
0.
0.
0.
1.
0.
0.
0.
0.
0.
800
200
700
200
300
100K
300
100
250
300
400
700
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.
025
020
030
008
012
010
040
260
025
035
060
045
010
MG/L
0.
0.
0.
0.
0.
0.
0.
04
0.
0.
0.
0.
0.
p
005K
005K
005
010
005K
005
005K
005
005K
005K
005K
005K
005K
MG/L P
0.005K
0.010K
0.020
0.010
0.010K
0.010K
0.010K
0.010K
0.010
0.010
0.010K
0.010
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET REtRIEVAL DATE fb/03/10
<*t01El
2s) 4& 05.0 101 26 JO.O 4
PECUS rfivE
43 15 SHOMLA
T/AM15TAD LAKE
0.3 MI N OF 2NDARY RD 0.8 M E US 90 JCT
11EPALES 2111204
• 0000 FEET DEPTH CLASS 00
DATE TIME DEPTH N02*>N03
FROM OF
TO DAY FEET
74/09/07
74/10/08
74/11/07
74/12/06
75/01/07
75/02/06
75/03/01
75/04/11
75/04/23
75/05/17
75/06/05
75/07/16
75/08/07
14 50
13 20
15 15
13 10
15 00
11 15
15 00
13 20
12 15
12 00
12 35
11 30
11 20
10630
!<>N03
OTAL
IG/L
0.660
3.300
3.000
3.100
3.120
2.300
2.400
2.100
2.000
2.000
2.000
1.400
1.570
00625
TOT KJEL
N
MG/L
0.600
0.600
0.700
0.400
0.300
0.100K
0.150
0.550
0.450
0.400
1.050
0.400
0.350
00610
NH3-N
TOTAL
MG/L
0.050
0.115
0.030
0.024
0.024
0.016
0.030
0.290
0.148
0.050
0.220
0.045
0.015
00671
PHOS-OIS
ORTMO
MG/L P
0.010
0.005K
0.010
0.010
0.005K
0.008
0.005K
0.005K
0.005K
0.005
0.005K
0.005
0.005K
00665
PHOS-TOT
MG/L f
0.010
0.030
0.020
0.010
0.010K
0.010*
0.010K
0.010K
0.020
0.010K
0.010K
0.010
0.020
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |