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1
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Waterbody: CANADIAN RIVER ABOVE LAKE MEREDITH
Watershed: Middle Canadian-Trujillo
TMDL ID: TX-0103-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (L/NS).
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2
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Waterbody: UPPER PRAIRIE DOG TOWN FORK RED RIVER
Watershed: Upper Prairie Dog Town Fork Red
TMDL ID: TX-0229-1998
TMDL Development Priority: LOW
Parameter of Concern: ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN, SULFATE
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Dissolved oxygen concentrations are sometimes lower than the standard established to assure optimum habitat conditions for aquatic life in the
upper part of the segment (L/ NS). Average levels of sulfate exceed the criterion to protect aquatic life, water supply, and other water quality uses (L/ CN). A
draft waste load evaluation for dissolved oxygen has been completed.
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3
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Waterbody: LOWER PRAIRIE DOG TOWN FORK RED RIVER
Watershed: Upper Prairie Dog Town Fork Red
TMDL ID: TX-0207-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation in the Fork Red River upstream portion of the segment (L/NS).
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4
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Waterbody: MIDDLE FORK PEASE RIVER
Watershed
: Middle Pease
TMDL ID: TX-0221-1998
TMDL Development Priority: LOW
Parameter of Concern
: CHLORIDE, SULFATE, TOTAL DISSOLVED SOLIDS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Average chloride, sulfate, and total dissolved solids levels in water exceed segment criteria to protect aquatic life, water supply and other
water quality uses (L/CN).
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5
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Waterbody: RED RIVER BELOW PEASE RIVER
Watershed: Blue-China
TMDL ID: TX-0205-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation in the river area near Burnett (L/NS).
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6
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Waterbody: LITTLE WICHITA RIVER
Watershed
: Little Wichita
TMDL ID: TX-0211-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Dissolved oxygen levels
are sometimes lower than the standard established to assure optimum habitat conditions for aquatic life (M/NS).
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7
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Waterbody
: WEST FORK TRINITY RIVER ABOVE BRIDGEPORT RESERVOIR
Watershed: Upper West Fork Trinity
TMDL ID: TX-0812-1998
TMDL Development Priority
: MEDIUM
Parameter of Concern: TOTAL DISSOLVED SOLIDS, ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN, CHLORIDES
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Through the lower 25 miles,
dissolved oxygen concentrations are sometimes lower than the standard established to ensure optimum habitat conditions for aquatic life (M/NS). In the same
portion, average chloride and total dissolved solidsconcentrations exceed segment criteria to protect aquatic life, water supply, and other water quality uses
(L/CN).
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8
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Waterbody: WEST FORK TRINITY RIVER BELOW BRIDGEPORT
Watershed: Upper West Fork Trinity
TMDL ID: TX-0810-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation through the lower 25 miles (L/NS).
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9
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Waterbody: WEST FORK TRINITY RIVER BELOW LAKE WORTH
Watershed: Lower West Fork Trinity
TMDL ID: TX-0806-1998
TMDL Development Priority: MEDIUM
Parameter of Concern
: PATHOGENS, CHLORDANE
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation through a 17-mile portion extending from 5 miles upstream to
12 miles downstream of Beach Street (L/NS). The fish consumption use is not supported through the lower 22 miles, based on an aquatic life closure issued by the
Texas Department of Health in 1990 due to elevated levels of chlordane in fish tissue (M/NS).
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10
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Waterbody: LOWER WEST FOR TRINITY RIVER
Watershed: Lower West Fork Trinity
TMDL ID: TX-0841-1998
TMDL Development Priority: MEDIUM
Parameter of Concern
: CHLORDANE, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation through the lower 21 miles of the segment (L/NS). The fish
consumption use is not supported through the entire segment, based on an aquatic life closure issued by the Texas Department of Health in 1990 due to elevated
levels of chlordane in fish tissue (M/NS). Toxicity in ambient water and sediment occasionally exceeds the levels established to provide optimum habitat conditions
for aquatic life (L/PS).
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11
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Waterbody
: CLEAR FORK TRINITY RIVER BELOW BENBROOK LAKE
Watershed: Lower West Fork Trinity
TMDL ID: TX-0829-1998
TMDL Development Priority
: MEDIUM
Parameter of Concern: CHLORDANE
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
The fish consumption use is not supported through the lower mile, based on an aquatic life closure issued by the Texas Department of Health
in 1990 due to elevated levels of chlordane in fish tissue (M/NS).
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12
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Waterbody
: CLEAR FORK TRINITY RIVER BELOW LAKE WEATHERFORD
Watershed: Lower West Fork Trinity
TMDL ID: TX-0831-1998
TMDL Development Priority
: MEDIUM
Parameter of Concern: LEAD, ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
In the lower 3.3 miles of the segment, the mean dissolved lead concentration in water
exceeds the criterion established to protect aquatic life from chronic exposure (M/NS). Dissolved oxygen concentrations are occasionally lower than the standard
established to assure optimum habitat conditions for aquatic life in the upper 15.7 miles of the segment (L/PS).
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13
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Waterbody
: CLEAR FORK TRINITY RIVER ABOVE LAKE WEATHERFORD
Watershed: Lower West Fork Trinity
TMDL ID: TX-0833-1998
TMDL Development Priority
: LOW
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Dissolved oxygen concentrations are occasionally lower than the standard established to
assure optimum habitat conditions for aquatic life (L/PS).
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14
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Waterbody
: ELM FORK TRINITY RIVER ABOVE RAY ROBERTS LAKE
Watershed: Elm Fork Trinity
TMDL ID: TX-0824-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: LEAD, CADMIUM
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
In the lower 8 miles of the segment, mean dissolved cadmium and lead concentrations exceed the criteria established to protect aquatic life
from chronic exposure (M/NS).
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15
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Waterbody: SULPHUR/SOUTH SULPHUR RIVER
Watershed: Sulphur Headwaters
TMDL ID: TX-0303-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN, ALUMINUM, CADMIUM
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment
: Yes
Comments:
In the lower portion of the segment, dissolved oxygen concentrations are occasionally lower than the standard established to assure
optimum habitat conditions for aquatic life (L/ PS), and dissolved aluminum concentrations in water are occasionallyhigher than the criterion established to
protect aquatic life (M/ PS).In the upper portion of the segment, dissolved cadmium concentrations in water are sometimes higher than the aquatic life criterion
(M/ NS).
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16
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Waterbody: BIG CYPRESS CREEK BELOW LAKE BOB SANDLIN
Watershed: Lake O'the Pines
TMDL ID: TX-0404-1998
TMDL Development Priority: H/U
Parameter of Concern: SELENIUM, ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments
:
A restricted consumption advisory for the general population and a no consumption advisory for children younger than seven and women of childbearing age
were issued by the Texas Department of Health in May 1992 for Welsh Reservoir in Titus County.
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17
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Waterbody: BLACK BAYOU
Watershed
: Cross Bayou
TMDL ID: TX-0406-1998
TMDL Development Priority: LOW
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Dissolved oxygen
concentrations are sometimes lower than the standard established to assure optimum habitat conditions for aquatic life (L/NS).
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18
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Waterbody: BIG CYPRESS CREEK BELOW LAKE O` THE PINES
Watershed: Lake O'the Pines
TMDL ID: TX-0402-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: MERCURY
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
A restricted consumption
advisory for the general population, children, and women of child bearing age was issued by the Texas Department of Health in November of 1995 for Caddo Lake due
to elevated levels of mercury in fish tissue (M/NS). Largemouth bass and the freshwater drum are the affected species.
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19
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Waterbody: LITTLE CYPRESS BAYOU (CREEK)
Watershed: Caddo Lake
TMDL ID: TX-0409-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: CADMIUM, LEAD
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Concentrations of dissolved
cadmium and lead in water sometimes exceed the criteria established to protect aquatic life in the lower 25 miles of the segment (M/NS).
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20
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Waterbody
: ELM FORK TRINITY RIVER BELOW LEWISVILLE LAKE
Watershed: Elm Fork Trinity
TMDL ID: TX-0822-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN, LEAD
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Through the upper 15 miles, dissolved oxygen concentrations are occasionally lower
than the standard established to assure optimum habitat conditions for aquatic life (M/PS).
The average lead concentration in water exceeds the human healthcriterion for freshwater fish (M/NS). This criterion was established to protect consumers from bioaccumulation of toxicants in fish tissue. Risk of exposure to lead from fish consumption has not been assessed. The mean dissolved lead concentration inwater exceeds the criterion established to protect aquatic life from chronic exposure (M/NS).
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21
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Waterbody: UPPER TRINITY RIVER
Watershed
: Upper Trinity
TMDL ID: TX-0805-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: CHLORDANE, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/NS). The fish consumption use is not supported through the upper 19 miles, based on
an aquatic life closure issued by the Texas Department ofHealth in 1990 due to elevated levels of chlordane in fish tissue (M/NS).
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22
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Waterbody: EAST FORK TRINITY RIVER
Watershed
: Upper Trinity
TMDL ID: TX-0819-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation through the lower 14 miles (L/NS).
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23
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Waterbody: CHAMBERS CREEK
Watershed
: Chambers
TMDL ID: TX-0814-1998
TMDL Development Priority: LOW
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
In the portion of the segment
upstream of the confluence with Cummins Creek, dissolved oxygen concentrations are occasionally lower than the standard established to ensure optimum habitat
conditions for aquatic life (L/PS).
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24
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Waterbody: TRINITY RIVER ABOVE LAKE LIVINGSTON
Watershed: Upper Trinity
TMDL ID: TX-0804-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: LEAD, PATHOGENS, CADMIUM
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Mean dissolved cadmium
and lead concentrations in water exceed the criteria established to protect aquatic life from chronic exposure, through a 25-mile portion centering on State
Highway 7 (M/NS). Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation in the upper 25 miles of the segment (L/NS).
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25
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Waterbody: NECHES RIVER ABOVE LAKE PALESTINE
Watershed: Upper Neches
TMDL ID: TX-0606-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ZINC, ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN, TOTAL DISSOLVED SOLIDS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment
: Yes
Comments:
Zinc levels in water exceed the chronic criterion established to protect aquatic life use (M/NS). Dissolved oxygen concentrations
were occasionally below the standard established to assure optimum habitat quality for aquatic life (L/PS). Dissolved oxygen levels in the segment are typically
depressed during low flow periods in the summer months and are partially attributable to sluggish flow conditions. Implementation of advanced wastewater treatment
at the City of Tyler's facilities hascontributed to improved water quality conditions in the segment. Total dissolved solids criterion to protect aquatic life,
water supply, and other water quality uses are not supported (M/CN).
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26
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Waterbody: SABINE RIVER ABOVE TOLEDO BEND RESERVOIR
Watershed: Middle Sabine
TMDL ID: TX-0505-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: SELENIUM, LEAD
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
A restricted consumption
advisory for the general population and a no consumption advisory for children
younger than seven and women of child-bearing age were issued by the Texas Department of Health in May 1992 for Martin Creek Reservoir inRusk County and for Brandy Branch Reservoir in Harrison County. The advisory was issued due to elevated levels of selenium in fish tissue which have been detected in all species tested (M/NS). In the lower 25 miles of the segment, concentrations ofdissolved lead in water sometimes exceed the criterion established to protect aquatic life (M/NS).
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27
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Waterbody: NOLAN CREEK/SOUTH NOLAN CREEK
Watershed: Leon
TMDL ID: TX-1218-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation from the City of Cameron downstream to the end of the segment (L/NS).
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28
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Waterbody: BRAZOS RIVER BELOW WHITNEY LAKE
Watershed: Lower Brazos-Little Brazos
TMDL ID: TX-1242-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation in the portion of the segment from the City of Marlin to the FM 979 crossing east of
Cameron (M/NS).
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29
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Waterbody: LITTLE RIVER
Watershed: Little
TMDL ID: TX-1213-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment
: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes exceed the criterion established to assure
the safety of contact recreation (L/NS).
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30
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Waterbody: SABINE RIVER BELOW TOLEDO BEND RESERVOIR
Watershed: Lower Sabine
TMDL ID: TX-0503-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS, LEAD
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
In the lower 25 miles of
the segment, bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (L/NS). In the lower 25 miles of the segment,
concentrations of dissolved lead in water sometimes exceedthe criterion established to protect aquatic life (M/NS).
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31
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Waterbody: BIG COW CREEK
Watershed
: Lower Sabine
TMDL ID: TX-0513-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ALUMINUM
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Concentrations of dissolved
aluminum in water occasionally exceed the criterion established to protect aquatic life in the lower 25 miles of the segment (M/PS).
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32
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Waterbody: TRINITY RIVER BELOW LAKE LIVINGSTON
Watershed: Lower Trinity
TMDL ID: TX-0802-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation in the lower 25 miles of the segment (L/NS).
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33
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Waterbody: CEDAR BAYOU ABOVE TIDAL
Watershed
: North Galveston Bay
TMDL ID: TX-0902-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: TOTAL DISSOLVED SOLIDS,
ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment
: Yes
Comments:
Dissolved oxygen concentrations are occasionally lower than the standard established to assure optimum
habitat conditions for aquatic life (M/PS). A recent draft waste load evaluation addressed dissolved oxygen Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (L/NS). The criterion for total dissolved solids to protect aquatic life, water supply, and other water quality uses is not met in the segment (L/CN).
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34
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Waterbody: SPRING CREEK
Watershed
: West Fork San Jacinto
TMDL ID: TX-1008-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS, ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments
:
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (M/NS). In the portion upstream from the Kuykendahl
Road bridge, dissolved oxygen concentrations are sometimes lower than the standard established to assure optimum habitat conditions for aquatic life (M/NS).
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35
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Waterbody: CYPRESS CREEK
Watershed: Spring
TMDL ID: TX-1009-1998
TMDL Development Priority: M/U
Parameter of Concern: TOTAL DISSOLVED SOLIDS, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/NS).
Average total dissolved solids values exceeded the segment criterion to protect aquatic life, water supply, and other water qualityuses (M/CN). A TMDL for dissolved oxygen is in preparation for this water body.
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36
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Waterbody: GREENS BAYOU ABOVE TIDAL
Watershed
: Buffalo-San Jacinto
TMDL ID: TX-1016-1998
TMDL Development Priority: M/U
Parameter of Concern: LEAD, ORGANIC ENRICHMENT/LOW
DISSOLVED OXYGEN, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (L/NS). Mean lead concentration in water exceeded the
criterion established to protect aquatic life from chronic exposure (M/NS). A TMDLfor dissolved oxygen is in preparation for this water body (U).
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37
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Waterbody: WHITEOAK BAYOU ABOVE TIDAL
Watershed
: Buffalo-San Jacinto
TMDL ID: TX-1017-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: LEAD, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/NS). Mean lead in water concentration exceeded the criterion established to protect
aquatic life from chronic exposure (M/NS).
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38
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Waterbody: ARMAND BAYOU ABOVE TIDAL
Watershed
: West Galveston Bay
TMDL ID: TX-1113-A-1998
TMDL Development Priority: L/U
Parameter of Concern: PATHOGENS, ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments
:
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (L/NS), and dissolved oxygen concentrations are
sometimes lower than the standard established to assure optimum habitat conditions foraquatic life (U/NS) in a three-mile, perennial, freshwater portion of Armand
Bayou upstream of tidal. This water body (not part of segment 1113) was not evaluated in 1996. A TMDL to address low dissolved oxygen levels in Armand Bayou is
under development and will include Armand Bayou Above Tidal.
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39
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Waterbody: DICKINSON BAYOU ABOVE TIDAL
Watershed: West Galveston Bay
TMDL ID: TX-1104-1998
TMDL Development Priority: L/U
Parameter of Concern: PATHOGENS, ORGANIC
ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments
:
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (L/NS). A TMDL for dissolved oxygen is in preparation in
conjunction with the TMDL for Segment 1103.
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40
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Waterbody: BUFFALO BAYOU ABOVE TIDAL
Watershed
: Buffalo-San Jacinto
TMDL ID: TX-1014-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/NS).
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41
|
Waterbody: CHOCOLATE BAYOU ABOVE TIDAL
Watershed: West Galveston Bay
TMDL ID: TX-1108-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS, SULFATE
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (L/NS).
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42
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Waterbody: OYSTER CREEK ABOVE TIDAL
Watershed
: Austin-Oyster
TMDL ID: TX-1110-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS, ORGANIC ENRICHMENT/LOW
DISSOLVED OXYGEN
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
In the
lower 25 miles of the segment, southwest of the City of Angleton in Brazoria County, bacteria levels sometimes exceed the criterion established to
assure the safety of contact recreation (M/NS), and dissolved oxygen concentrations are sometimes lower than the standard established to assure optimum habitat
conditions for aquatic life (M/NS).
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43
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Waterbody: UPPER OYSTER CREEK
Watershed
: Austin-Oyster
TMDL ID: TX-1245-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Dissolved oxygen
concentrations are sometimes below the standard established to assure optimum habitat conditions for aquatic life in the area from the Texas Department of
Corrections Jester Unit downstream to the confluence of Stafford Run (M/NS).Dissolved oxygen levels have been historically depressed in the segment due to a
complex series of diversion dams, oxygen demanding wastes, high sediment oxygen demand, low re-aeration rates, and nearly stagnant velocities. A draft waste load
evaluation, based on intensive survey data, indicates that the dissolved oxygen criterion supportive of the intermediate use should be attainable at the
recommended effluent limits (advanced treatment with nitrification).
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44
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Waterbody: BRAZOS RIVER BELOW NAVASOTA RIVER
Watershed: Austin-Oyster
TMDL ID: TX-1202-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/ NS).
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45
|
Waterbody: LAVACA RIVER ABOVE TIDAL
Watershed
: Lavaca
TMDL ID: TX-1602-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS, OIL FIELD WASTES
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (L/NS). The Texas Railroad Commission has identified oil field wastes as a problem in the
segment (Summary Report: Regional Assessments of Water Quality Pursuant to the Texas Clean Rivers Act, Senate Bill 818, TNRCC 1992).
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46
|
Waterbody: PEDERNALES RIVER
Watershed
: Pedernales
TMDL ID: TX-1414-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN,
PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Dissolved
oxygen concentrations are occasionally below the standard established to assure optimum habitat conditions for aquatic life, downstream of the confluence with
Barons Creek below Fredricksburg, during summertime low flow conditions (L/PS).A waste load evaluation has addressed dissolved oxygen. Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation, in the lower part of the segment (M/NS).
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47
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Waterbody: UPPER NORTH BOSQUE RIVER
Watershed
: North Bosque
TMDL ID: TX-1255-1998
TMDL Development Priority: L/U
Parameter of Concern: PATHOGENS, ORGANIC ENRICHMENT/LOW
DISSOLVED OXYGEN, CHLORIDE, SULFATE, TOTAL DISSOLVED SOLIDS, NITROGEN, PHOSPHORUS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed the criterion established to assure the safety of
contact recreation in the headwater of the river upstream of the City of Stephenville (L/NS). Dissolved oxygen concentrations are occasionally below the
standard established to assure optimum habitat conditions for aquatic life (U/PS). Average chloride, sulfate, and total dissolved solids levels exceed segment
criteria to protect aquatic life, water supply, and other water quality uses (L/CN). Nitrogen and phosphorus levels are elevated and contribute to excessive
phytoplankton and attached algal growths (U). A TMDL is in preparation for this water body. A wasteload evaluation conducted on the segment requires advanced
waste treatment for the attainment ofstream standards. Local studies will support control programs in the near future. The Texas Institute for Applied
Environmental Research (TIAER) has monitored agricultural nonpoint source runoff in the segment since 1991. TIAER, the Brazos River Authority, and the TNRCC are
conducting intensive monitoring surveys in the Lake Waco watershed to determine nonpoint source loading.
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48
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Waterbody: BARTON CREEK
Watershed
: Austin-Travis Lakes
TMDL ID: TX-1430-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (M/NS).
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49
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Waterbody: ONION CREEK
Watershed
: Austin-Travis Lakes
TMDL ID: TX-1427-1998
TMDL Development Priority: LOW
Parameter of Concern: TOTAL DISSOLVED SOLIDS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
The average level of total
dissolved solids exceeds the segment criterion to protect aquatic life, water supply, and other water quality uses (L/CN). Very stringent effluent limits are in
place.
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50
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Waterbody: COLORADO RIVER BELOW TOWN LAKE
Watershed: Austin-Travis Lakes
TMDL ID: TX-1428-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation below Austin (M/NS).
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51
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Waterbody: LOWER LEON CREEK
Watershed
: Medina
TMDL ID: TX-1906-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: CADMIUM, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Dissolved cadmium
concentrations in water sometimes exceed the criterion established to protect aquatic life (M/NS). Bacteria levels sometimes exceed the criterion established to
assure the safety of contact recreation in the upper 21 miles (L/NS).
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52
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Waterbody: SALADO CREEK
Watershed
: Upper San Antonio
TMDL ID: TX-1910-1998
TMDL Development Priority: U
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN,
PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Dissolved
oxygen concentrations are sometimes lower than the standard established to assure optimum habitat conditions for aquatic life in a 2-mile portion from 1 mile
downstream of Rigsby Avenue to Southcross Boulevard, and in a 5-mile portion fromNE Loop 410 to Pershing Road (U/NS). In the lower half of the segment,
bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (U/NS). A TMDL is scheduled for FY 1998. Dissolved oxygen has
been addressed by a waste load evaluation.
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53
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Waterbody: UPPER SAN ANTONIO RIVER
Watershed
: Upper San Antonio
TMDL ID: TX-1911-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation in a 12- mile portion from 1 mile upstream of South Alamo Street to 2 miles upstream of
Blue Wing Road (L/NS).
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54
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Waterbody: MISSION RIVER ABOVE TIDAL
Watershed
: Mission
TMDL ID: TX-2002-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (L/NS).
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55
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Waterbody: ARKANSAS RIVER ABOVE TIDAL
Watershed
: Aransas
TMDL ID: TX-2004-1998
TMDL Development Priority: LOW
Parameter of Concern: TOTAL DISSOLVED SOLIDS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
The average level of total
dissolved solids is elevated above the criterion to protect aquatic life, water supply, and other water quality uses in the lower part of the segment (L/CN).
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56
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Waterbody: ATASCOSA RIVER
Watershed
: Lower Frio
TMDL ID: TX-2107-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS, ORGANIC ENRICHMENT/LOW DISSOLVED
OXYGEN
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels
sometimes exceed the criterion established to assure the safety of contact recreation (L/NS). Dissolved oxygen concentrations are sometimes lower than the standard
established to assure optimum habitat quality for aquatic life (L/NS). Field observations suggest that low dissolved oxygen concentrations are not associated with
discharges, but occur as pools stagnate during intermittent flow conditions
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57
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Waterbody: NUECES/LOWER FRIO RIVER
Watershed
: Lower Frio
TMDL ID: TX-2106-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (L/NS).
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58
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Waterbody: FRIO RIVER ABOVE CHOKE CANYON RES
Watershed: Upper Frio
TMDL ID: TX-2117-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation (L/NS).
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59
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Waterbody: ARROYO COLORADO ABOVE TIDAL
Watershed: South Laguna Madre
TMDL ID: TX-2202-1998
TMDL Development Priority: U
Parameter of Concern
: CHLORDANE, TOXAPHENE, DDE, PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
The Texas Department of Health issued a restricted consumption advisory for the general population in September 1980 due to elevated levels of
chlordane, toxaphene, and DDE in fish tissue (U/NS). The advisory, which applies to the entire segment, recommends that consumption be limited to one meal per
month for any type of fish.
Bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (U/NS). A TMDL is in preparation for this water body. The Texas Department of Health issued an aquatic life closure for Donna Reservoir, an unclassified, 333-acre lake which stores water pumped from the Rio Grande, in February 1994, due to elevated levels of PCBs in fish tissue (U/NS). The closure applies to the entire reservoir and the canal system that connects it to the Rio Grande.
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60
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Waterbody: RIO GRANDE BELOW FALCON RESERVOIR
Watershed: Los Olmos
TMDL ID: TX-2302-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/NS).
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61
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Waterbody: RIO GRANDE BELOW AMISTAD RESERVOIR
Watershed: Elm-Sycamore
TMDL ID: TX-2304-1998
TMDL Development Priority: LOW
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (L/NS).
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62
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Waterbody: LOWER PECOS RIVER
Watershed
: Lower Pecos
TMDL ID: TX-2310-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: CHLORIDE, SULFATE, TOTAL DISSOLVED SOLIDS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Average chloride,
sulfate, and total dissolved solids levels exceed the segment criteria to protect aquatic life, water supply, and other water quality uses (M/CN). Natural
contributions of salts from the soil, as well as saline groundwater seeps and springs, contribute to these elevated levels.
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63
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Waterbody: RIO GRANDE BELOW RIVERSIDE DIVERSION
Watershed: Rio Grande-Fort Quitman
TMDL ID: TX-2307-1998
TMDL Development Priority: LOW
Parameter of Concern
: CHLORIDE, SULFATE, TOTAL DISSOLVED SOLIDS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Average chloride, sulfate, and total dissolved solids concentrations exceed the segment criteria to protect aquatic life, water supply, and
other water quality uses (L/CN). River flow in the segment is reduced due to irrigation withdrawals in the ElPaso area and evaporation throughout the segment.
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64
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Waterbody: CONCHO RIVER
Watershed
: South Concho
TMDL ID: TX-1421-1998
TMDL Development Priority: LOW
Parameter of Concern: ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN,
ALGAE, PATHOGENS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Dissolved
oxygen variations and elevated levels of chlorophyll a above the screening levels occur during the summer months in the City of San Angelo river impoundments. In
the North Concho Fork below Lake O.C. Fisher in San Angelo, dissolved oxygenconcentrations are occasionally below the standard established to assure optimum
habitat conditions for aquatic life (L/PS), and bacteria levels sometimes exceed the criterion established to assure the safety of contact recreation (L/NS). A
waste load evaluation has addressed dissolved oxygen.
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65
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Waterbody: LEON RIVER BELOW PROCTOR LAKE
Watershed: Leon
TMDL ID: TX-1221-1998
TMDL Development Priority: MEDIUM
Parameter of Concern: PATHOGENS
Point Sources Contributing to Impairment: Yes
Non-Point Sources Contributing to Impairment: Yes
Comments:
Bacteria levels sometimes
exceed the criterion established to assure the safety of contact recreation (M/NS).
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66
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Waterbody: NORTH BASQUE RIVER
Watershed
: North Bosque
TMDL ID: TX-1226-1998
TMDL Development Priority: L/U
Parameter of Concern: PATHOGENS, NITROGEN, PHOSPHORUS
Point Sources Contributing to Impairment: No
Non-Point Sources Contributing to Impairment: No
Comments:
Bacteria levels sometimes exceed
the criterion established to assure the safety of contact recreation in the Proctor Lake middle and lower portion downstream of the South Leon River (M/NS).
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