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On This Page 303(d) Listed Waters for 2006

Data are also available for these cycles:
2002 2004 2008 2010

Waterbody Changes from Prior Cycle

For More Information:

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Texas Water Quality Assessment Report

Assessed Waters of Texas by Watershed

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Display impaired waters and TMDL information only


NOTE: The data provided in this report may differ from the information provided in the original Texas 2006 Integrated Report. This is a result of differences between the Texas State assessment database and the summary data provided in New Mexico's 2006 Integrated Report, which is available at http://www.tceq.state.tx.us/compliance/monitoring/water/quality/data/06twqi/twqi06.html



Site-specific Targeted Monitoring Summary Results

Texas (2006)

Description of this table
 
    12,072.2 996,271.1 1,389.0
       1,811.7 57,588.0
   
                          
                          
                          
                          
    7,459.3 572,685.9 693.2 3,879.0
                          
                          
                          
           7,459.3     572,685.9     693.2     3,879.0
              1,073.1     .0     227.8     .0
                    6,386.2           572,685.9           465.4           3,879.0
19,531.5 1,568,957.0 2,082.2 3,879.0
191,228.0 3,065,600.0 2,936.2 Unavailable
10.2 51.2 70.9 Unavailable

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2006


Site-specific Targeted Monitoring Results

Texas Rivers and Streams 2006

Description of this table

All
Rivers and Streams

191,228.0 Miles of Rivers and Streams

Assessed 19,531.5
Unassessed 171,696.5
Total Miles 191,228.0







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Description of this table

Assessed
Rivers and Streams

19,531.5 Miles of
Assessed Rivers and Streams

Good 12,072.2
Threatened .0
Impaired 7,459.3
Total Miles Assessed 19,531.5







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Description of this table

Threatened and Impaired
Rivers and Streams

7,459.3 Miles of
Threatened and Impaired
Rivers and Streams

1,073.1
.0
.0
6,386.2
Total Threatened and Impaired 7,459.3

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Rivers and Streams 2006

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life Use 15,759.7 87.6 .0 12.4 color.gifcolor.gif
Domestic Water Supply - Public Water Supply 8,688.0 100.0 .0 .0 color.gif
Fish Consumption Use 1,184.2 66.5 .0 33.5 color.gifcolor.gif
General Use 13,357.4 90.4 .0 9.6 color.gifcolor.gif
Recreation Use 13,632.9 64.1 .0 35.9 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Rivers and Streams 2006

Description of this table
Bacteria Pathogens color.gif 4,908.9
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 1,468.4
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 977.0
Total Dissolved Solids (TDS) Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 515.5
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 266.4
Impaired Fish Community Cause Unknown - Impaired Biota color.gif 224.1
Impaired Macrobenthos Community Cause Unknown - Impaired Biota color.gif 174.9
Impaired Habitat Habitat Alterations color.gif 164.2
pH pH/Acidity/Caustic Conditions color.gif 120.5
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 113.9
Sulfates Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 94.5
Toxicity Total Toxics color.gif 74.1
Lead Metals (other than Mercury) color.gif 62.0
Mercury in Fish Tissue Mercury color.gif 43.0
Sediment Toxicity Total Toxics color.gif 4.5
Zinc Metals (other than Mercury) color.gif 3.2
Mercury in Water Column Mercury color.gif 2.5

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Rivers and Streams 2006

Description of this table
Source Unknown Unknown color.gif 2,850.6
Non-Point Source Unspecified Nonpoint Source color.gif 2,620.7
Natural Sources Natural/Wildlife color.gif 1,137.4
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 934.5
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 895.1
Agriculture Agriculture color.gif 505.2
On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems) Municipal Discharges/Sewage color.gif 458.4
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 447.3
Sources Outside State Juristiction Or Borders Other color.gif 445.7
Point Source Unknown Other color.gif 435.4
Upstream Source Other color.gif 431.8
Rangeland Grazing Agriculture color.gif 349.8
Permitted Runoff From Confined Animal Feeding Operations (Cafos) Agriculture color.gif 334.9
Grazing In Riparian Or Shoreline Zones Agriculture color.gif 297.8
Unrestricted Cattle Access Agriculture color.gif 284.3
Irrigated Crop Production Agriculture color.gif 265.0
Flow Alterations From Water Diversions Hydromodification color.gif 236.0
Natural Conditions - Water Quality Standards Use Attainability Analyses Needed Natural/Wildlife color.gif 229.8
Industrial Point Source Discharge Industrial color.gif 177.9
Municipal (Urbanized High Density Area) Urban-Related Runoff/Stormwater color.gif 172.8
Livestock (Grazing Or Feeding Operations) Agriculture color.gif 170.8
Animal Feeding Operations (Nps) Agriculture color.gif 138.6
Wildlife Other Than Waterfowl Natural/Wildlife color.gif 105.6
Waterfowl Natural/Wildlife color.gif 91.0
Channelization Hydromodification color.gif 87.5
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 79.5
Manure Runoff Agriculture color.gif 71.0
Residential Districts Urban-Related Runoff/Stormwater color.gif 64.3
Rural (Residential Areas) Other color.gif 63.5
Petroleum/Natural Gas Production Activities (Permitted) Industrial color.gif 44.0
Septage Disposal Municipal Discharges/Sewage color.gif 44.0
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 43.0
Petroleum/Natural Gas Activities Resource Extraction color.gif 42.6
Aquaculture (Permitted) Aquaculture color.gif 27.5
Crop Production (Crop Land Or Dry Land) Agriculture color.gif 23.0
Drought-Related Impacts Natural/Wildlife color.gif 23.0
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif 23.0
Internal Nutrient Recycling Natural/Wildlife color.gif 22.0
Industrial Thermal Discharges Industrial color.gif 18.4
Non-Irrigated Crop Production Agriculture color.gif 11.6
Land Application Of Wastewater Biosolids (Non-Agricultural) Land Application/Waste Sites/Tanks color.gif 10.1
Aquaculture (Not Permitted) Aquaculture color.gif 9.5
Sediment Resuspension (Clean Sediment) Hydromodification color.gif 6.0
Land Application Of Wastewater (Non-Agricultural) Land Application/Waste Sites/Tanks color.gif 5.6
Impacts From Land Application Of Wastes Land Application/Waste Sites/Tanks color.gif 5.6
Habitat Modification - Other Than Hydromodification Habitat Alterations (Not Directly Related To Hydromodification) color.gif 5.0
Auction Barns And Off-Farm Animal Holding/Management Area Agriculture color.gif 5.0
Highways, Roads, Bridges, Infrasturcture (New Construction) Construction color.gif 4.5
Dry Weather Flows With Nps Pollutants Urban-Related Runoff/Stormwater color.gif 4.4
Loss Of Riparian Habitat Habitat Alterations (Not Directly Related To Hydromodification) color.gif 2.0
Dam Or Impoundment Hydromodification color.gif 2.0
Littoral/Shore Area Modifications (Non-Riverine) Habitat Alterations (Not Directly Related To Hydromodification) color.gif .5

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Site-specific Targeted Monitoring Results

Texas Lakes, Reservoirs, and Ponds 2006

Description of this table

All
Lakes, Reservoirs, and Ponds

3,065,600.0 Acres of Lakes, Reservoirs, and Ponds

Assessed 1,568,957.0
Unassessed 1,496,643.0
Total Acres 3,065,600.0







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Description of this table

Assessed
Lakes, Reservoirs, and Ponds

1,568,957.0 Acres of
Assessed Lakes, Reservoirs, and Ponds

Good 996,271.1
Threatened .0
Impaired 572,685.9
Total Acres Assessed 1,568,957.0







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Description of this table

Threatened and Impaired
Lakes, Reservoirs, and Ponds

572,685.9 Acres of
Threatened and Impaired
Lakes, Reservoirs, and Ponds

.0
.0
.0
572,685.9
Total Threatened and Impaired 572,685.9

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Lakes, Reservoirs, and Ponds 2006

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life Use 930,145.9 91.0 .0 9.0 color.gifcolor.gif
Domestic Water Supply - Public Water Supply 1,506,714.5 100.0 .0 .0 color.gif
Fish Consumption Use 617,269.4 40.1 .0 59.9 color.gifcolor.gif
General Use 1,425,047.1 86.5 .0 13.5 color.gifcolor.gif
Recreation Use 719,631.4 96.2 .0 3.8 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Lakes, Reservoirs, and Ponds 2006

Description of this table
Mercury in Fish Tissue Mercury color.gif 361,330.9
Sulfates Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 116,074.0
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 82,204.0
pH pH/Acidity/Caustic Conditions color.gif 68,057.0
Total Dissolved Solids (TDS) Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 41,464.0
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 38,914.0
Bacteria Pathogens color.gif 26,992.0
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 8,157.0
Impaired Fish Community Cause Unknown - Impaired Biota color.gif 4,679.0
Sediment Toxicity Total Toxics color.gif 1,559.0

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Lakes, Reservoirs, and Ponds 2006

Description of this table
Source Unknown Unknown color.gif 483,543.9
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 361,330.9
Non-Point Source Unspecified Nonpoint Source color.gif 98,704.0
Natural Sources Natural/Wildlife color.gif 65,688.0
Point Source Unknown Other color.gif 54,217.0
Sources Outside State Juristiction Or Borders Other color.gif 16,504.0
Upstream Source Other color.gif 16,504.0
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 13,734.0
Internal Nutrient Recycling Natural/Wildlife color.gif 5,700.0
Natural Conditions - Water Quality Standards Use Attainability Analyses Needed Natural/Wildlife color.gif 3,800.0
Dam Or Impoundment Hydromodification color.gif 2,713.0
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 2,410.0
Atmospheric Deposition - Acidity Atmospheric Deposition color.gif 2,000.0
Contaminated Sediments Legacy/Historical Pollutants color.gif 1,516.0
Industrial Point Source Discharge Industrial color.gif 1,516.0
On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems) Municipal Discharges/Sewage color.gif 1,040.0
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 1,040.0
Waterfowl Natural/Wildlife color.gif 524.0

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Site-specific Targeted Monitoring Results

Texas Bays and Estuaries 2006

Description of this table

All
Bays and Estuaries

2,936.2 Square Miles of Bays and Estuaries

Assessed 2,082.2
Unassessed 854.0
Total Square Miles 2,936.2







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Description of this table

Assessed
Bays and Estuaries

2,082.2 Square Miles of
Assessed Bays and Estuaries

Good 1,389.0
Threatened .0
Impaired 693.2
Total Square Miles Assessed 2,082.2







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Description of this table

Threatened and Impaired
Bays and Estuaries

693.2 Square Miles of
Threatened and Impaired
Bays and Estuaries

227.8
.0
.0
465.4
Total Threatened and Impaired 693.2

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Bays and Estuaries 2006

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life Use 2,010.7 86.8 .0 13.2 color.gifcolor.gif
Fish Consumption Use 591.5 94.9 .0 5.1 color.gifcolor.gif
General Use 2,032.2 100.0 .0 .0 color.gif
Oyster Aquatic Life 1,754.5 74.4 .0 25.6 color.gifcolor.gif
Recreation Use 2,034.0 99.5 .0 .5 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Bays and Estuaries 2006

Description of this table
Bacteria (Oyster Waters) Pathogens color.gif 420.9
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 264.8
Zinc in Edible Tissue Metals (other than Mercury) color.gif 28.9
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 28.6
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 28.6
Bacteria Pathogens color.gif 10.1
Mercury in Fish Tissue Mercury color.gif 1.6

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Bays and Estuaries 2006

Description of this table
Non-Point Source Unspecified Nonpoint Source color.gif 437.7
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 260.0
Source Unknown Unknown color.gif 147.8
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 54.9
Point Source Unknown Other color.gif 37.9
Industrial Point Source Discharge Industrial color.gif 30.2
Upstream Source Other color.gif 26.0
Irrigated Crop Production Agriculture color.gif 26.0
Natural Sources Natural/Wildlife color.gif 6.9
Mine Tailings Resource Extraction color.gif 1.6
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 1.6

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Site-specific Targeted Monitoring Results

Texas Ocean and Near Coastal 2006

Description of this table
Pie chart not displayed because total size for Ocean and Near Coastal is unavailable.
Assessed 3,879.0
Unassessed Unavailable
Total Square Miles Unavailable







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Description of this table

Assessed
Ocean and Near Coastal

3,879.0 Square Miles of
Assessed Ocean and Near Coastal

Good .0
Threatened .0
Impaired 3,879.0
Total Square Miles Assessed 3,879.0







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Description of this table

Threatened and Impaired
Ocean and Near Coastal

3,879.0 Square Miles of
Threatened and Impaired
Ocean and Near Coastal

.0
.0
.0
3,879.0
Total Threatened and Impaired 3,879.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Texas Ocean and Near Coastal 2006

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life Use 1,112.0 100.0 .0 .0 color.gif
Fish Consumption Use 3,879.0 .0 .0 100.0 color.gif
General Use 1,112.0 100.0 .0 .0 color.gif
Recreation Use 1,520.0 63.4 .0 36.6 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Ocean and Near Coastal 2006

Description of this table
Mercury in Fish Tissue Mercury color.gif 3,879.0
Bacteria Pathogens color.gif 556.0

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Ocean and Near Coastal 2006

Description of this table
Source Unknown Unknown color.gif 3,879.0
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 3,879.0

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Texas Causes of Impairment for Reporting Year 2006


Description of this table
NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories.
Size of Assessed Waters with Listed Causes of Impairment
Cause Unknown - Impaired Biota 314.5 4,679.0
Dioxins 113.9 28.6
Habitat Alterations 164.2
Mercury 45.5 361,330.9 1.6 3,879.0
Metals (other than Mercury) 65.2 28.9
Organic Enrichment/Oxygen Depletion 1,468.4 82,204.0 264.8
Pathogens 4,908.9 26,992.0 420.9 556.0
pH/Acidity/Caustic Conditions 120.5 68,057.0
Polychlorinated Biphenyls (PCBs) 266.4 8,157.0 28.6
Salinity/Total Dissolved Solids/Chlorides/Sulfates 1,068.0 124,064.0
Total Toxics 78.5 1,559.0

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Texas Probable Sources Contributing to Impairments
for Reporting Year 2006

Description of this table
NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Size of Assessed Waters with Probable Sources of Impairments
Agriculture 1,402.8 26.0
Aquaculture 27.5
Atmospheric Deposition 43.0 361,330.9 1.6 3,879.0
Construction 4.5
Habitat Alterations (Not Directly Related To Hydromodification) 7.5
Hydromodification 340.5 2,713.0
Industrial 240.3 1,516.0 30.2
Land Application/Waste Sites/Tanks 10.1
Legacy/Historical Pollutants 1,516.0
Municipal Discharges/Sewage 1,553.5 14,774.0 54.9
Natural/Wildlife 1,425.5 75,188.0 6.9
Other 1,125.1 70,721.0 63.9
Resource Extraction 42.6 1.6
Unknown 2,850.6 483,543.9 147.8 3,879.0
Unspecified Nonpoint Source 2,620.7 98,704.0 437.7
Urban-Related Runoff/Stormwater 1,052.8 260.0

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Texas TMDL Alternatives by Cause of Impairment 2006


No TMDL Alternatives reported.

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Texas Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table
NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards.
2005 color.gif 7 7
2008 color.gif 22 26
2012 color.gif 42 50

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Texas Causes of Impairment for 303(d) Listed Waters

Description of this table
NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment.
Pathogens color.gif 437
Organic Enrichment/Oxygen Depletion color.gif 149
Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 77
Mercury color.gif 60
Polychlorinated Biphenyls (PCBs) color.gif 38
pH/Acidity/Caustic Conditions color.gif 36
Cause Unknown - Impaired Biota color.gif 29
Dioxins color.gif 28
Total Toxics color.gif 14
Habitat Alterations color.gif 7
Metals (other than Mercury) color.gif 7

Total: 882 Causes of Impairment

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Texas Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant.
Number of Causes of
Impairment Addressed
Escherichia Coli (E. Coli) color.gif 135 135
Enterococcus Bacteria color.gif 17 17
Nickel color.gif 14 14
Fecal Coliform color.gif 11 11
Carbonaceous Bod (CBOD) color.gif 10 10
Chlordane color.gif 10 10
Ammonia Nitrogen color.gif 8 8
Polychlorinated Biphenyls (PCBs) color.gif 5 5
DDE color.gif 4 4
Dieldrin color.gif 4 4
Total Dissolved Solids (TDS) color.gif 4 4
1,1,2-Trichloroethane color.gif 2 2
1,2-Dichloroethane color.gif 2 2
Ammonia color.gif 2 2
Chloride color.gif 2 2
DDT color.gif 2 2
Dissolved Oxygen color.gif 2 2
Heptachlor Epoxide color.gif 2 2
Phosphorus color.gif 2 2
4,4'-DDD color.gif 1 1
4,4'-DDT color.gif 1 1
Atrazine color.gif 1 1
Chlorides color.gif 1 1
DDD color.gif 1 1
Endrin color.gif 1 1
Heptachlor color.gif 1 1
Hexachlorobenzene color.gif 1 1
Lindane color.gif 1 1
Nitrogen, Total color.gif 1 1
PCB(s) in Fish Tissue color.gif 1 1
Sulfate color.gif 1 1
Sulfates color.gif 1 1
Toxaphene color.gif 1 1
Zinc in Shellfish color.gif 1 1

Total: 253 TMDLs; 253 Causes of Impairment Addressed


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Texas Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.


Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
2001 color.gif 26 26
2002 color.gif 2 2
2003 color.gif 23 23
2004 color.gif 8 8
2006 color.gif 5 5
2007 color.gif 35 35
2008 color.gif 1 1
2009 color.gif 54 54
2010 color.gif 38 38
2011 color.gif 17 17
2012 color.gif 15 15
2013 color.gif 10 10
2014 color.gif 19 19

Total: 253 TMDLs; 253 Causes of Impairment Addressed

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