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Site-specific Targeted Monitoring Summary Results

Texas (2006)

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Ocean and Near Coastal (Square Miles)
Good Waters	12,072.2	996,271.1	1,389.0
Previously impaired waters       now attaining all uses	1,811.7	57,588.0
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	7,459.3	572,685.9	693.2	3,879.0
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed	7,459.3	572,685.9	693.2	3,879.0
New TMDLs completed	1,029.5	.0	227.8	.0
Remaining TMDLs needed	6,429.8	572,685.9	465.4	3,879.0
Total Assessed Waters	19,531.5	1,568,957.0	2,082.2	3,879.0
Total Waters	191,228.0	3,065,600.0	2,936.2	Unavailable
Percent of Waters Assessed	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 Assessed Status Miles Assessed 19,531.5 Unassessed 171,696.5 Total Miles 191,228.0

Description of this table Attainment Status Miles Good 12,072.2 Threatened .0 Impaired 7,459.3 Total Miles Assessed 19,531.5

Description of this table TMDL Development Status Miles All TMDLs completed 1,029.5 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 6,429.8 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.

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	15,759.7	87.6	.0	12.4
Domestic Water Supply - Public Water Supply	8,688.0	100.0	.0	.0
Fish Consumption Use	1,184.2	66.5	.0	33.5
General Use	13,357.4	90.4	.0	9.6
Recreation Use	13,632.9	64.1	.0	35.9

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Rivers and Streams 2006

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

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Rivers and Streams 2006

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

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Site-specific Targeted Monitoring Results

Texas Lakes, Reservoirs, and Ponds 2006

Description of this table Assessed Status Acres Assessed 1,568,957.0 Unassessed 1,496,643.0 Total Acres 3,065,600.0

Description of this table Attainment Status Acres Good 996,271.1 Threatened .0 Impaired 572,685.9 Total Acres Assessed 1,568,957.0

Description of this table TMDL Development Status Acres All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 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.

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	930,145.9	91.0	.0	9.0
Domestic Water Supply - Public Water Supply	1,506,714.5	100.0	.0	.0
Fish Consumption Use	617,269.4	40.1	.0	59.9
General Use	1,425,047.1	86.5	.0	13.5
Recreation Use	719,631.4	96.2	.0	3.8

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Lakes, Reservoirs, and Ponds 2006

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

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Lakes, Reservoirs, and Ponds 2006

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

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Site-specific Targeted Monitoring Results

Texas Bays and Estuaries 2006

Description of this table Assessed Status Square Miles Assessed 2,082.2 Unassessed 854.0 Total Square Miles 2,936.2

Description of this table Attainment Status Square Miles Good 1,389.0 Threatened .0 Impaired 693.2 Total Square Miles Assessed 2,082.2

Description of this table TMDL Development Status Square Miles All TMDLs completed 227.8 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 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.

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	2,010.7	86.8	.0	13.2
Fish Consumption Use	591.5	94.9	.0	5.1
General Use	2,032.2	100.0	.0	.0
Oyster Aquatic Life	1,754.5	74.4	.0	25.6
Recreation Use	2,034.0	99.5	.0	.5

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Bays and Estuaries 2006

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Bacteria (Oyster Waters)	Pathogens	420.9
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	264.8
Zinc in Edible Tissue	Metals (other than Mercury)	28.9
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	28.6
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	28.6
Bacteria	Pathogens	10.1
Mercury in Fish Tissue	Mercury	1.6

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Bays and Estuaries 2006

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Non-Point Source	Unspecified Nonpoint Source	437.7
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	260.0
Source Unknown	Unknown	147.8
Municipal Point Source Discharges	Municipal Discharges/Sewage	54.9
Point Source Unknown	Other	37.9
Industrial Point Source Discharge	Industrial	30.2
Upstream Source	Other	26.0
Irrigated Crop Production	Agriculture	26.0
Natural Sources	Natural/Wildlife	6.9
Mine Tailings	Resource Extraction	1.6
Atmospheric Deposition - Toxics	Atmospheric Deposition	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 Status Square Miles Assessed 3,879.0 Unassessed Unavailable Total Square Miles Unavailable

Description of this table Attainment Status Square Miles Good .0 Threatened .0 Impaired 3,879.0 Total Square Miles Assessed 3,879.0

Description of this table TMDL Development Status Square Miles All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 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.

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Aquatic Life Use	1,112.0	100.0	.0	.0
Fish Consumption Use	3,879.0	.0	.0	100.0
General Use	1,112.0	100.0	.0	.0
Recreation Use	1,520.0	63.4	.0	36.6

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Site-specific Targeted Monitoring Results

Causes of Impairment
Texas Ocean and Near Coastal 2006

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Mercury in Fish Tissue	Mercury	3,879.0
Bacteria	Pathogens	556.0

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Site-specific Targeted Monitoring Results

Probable Sources
Texas Ocean and Near Coastal 2006

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Source Unknown	Unknown	3,879.0
Atmospheric Deposition - Toxics	Atmospheric Deposition	3,879.0

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Texas Causes of Impairment for Reporting Year 2006

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Texas Probable Sources Contributing to Impairments
for Reporting Year 2006

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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

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.
Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
2005	7	7
2008	22	26
2012	42	50

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Texas Causes of Impairment for 303(d) Listed Waters

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.
Cause of Impairment Group Name	Number of Causes of Impairment Reported
Pathogens	437
Organic Enrichment/Oxygen Depletion	149
Salinity/Total Dissolved Solids/Chlorides/Sulfates	77
Mercury	60
Polychlorinated Biphenyls (PCBs)	38
pH/Acidity/Caustic Conditions	36
Cause Unknown - Impaired Biota	29
Dioxins	28
Total Toxics	14
Habitat Alterations	7
Metals (other than Mercury)	7

Total: 882 Causes of Impairment

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Texas Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

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.
Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
Escherichia Coli (E. Coli)	108	108
Enterococcus Bacteria	15	15
Nickel	14	14
Fecal Coliform	11	11
Carbonaceous Bod	10	10
Chlordane	10	10
Ammonia Nitrogen	8	8
Polychlorinated Biphenyls (PCBs)	5	5
DDE	4	4
Dieldrin	4	4
Total Dissolved Solids (TDS)	4	4
1,1,2-Trichloroethane	2	2
1,2-Dichloroethane	2	2
Ammonia	2	2
Chloride	2	2
DDT	2	2
Dissolved Oxygen	2	2
Heptachlor Epoxide	2	2
Phosphorus	2	2
4,4'-DDD	1	1
4,4'-DDT	1	1
Atrazine	1	1
Chlorides	1	1
DDD	1	1
Endrin	1	1
Heptachlor	1	1
Hexachlorobenzene	1	1
Lindane	1	1
Nitrogen, Total	1	1
PCB(s) in Fish Tissue	1	1
Sulfate	1	1
Sulfates	1	1
Toxaphene	1	1
Zinc in Shellfish	1	1

Total: 224 TMDLs; 224 Causes of Impairment Addressed

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Texas Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
2001	26	26
2002	2	2
2003	23	23
2004	8	8
2006	5	5
2007	35	35
2008	1	1
2009	54	54
2010	38	38
2011	17	17
2012	15	15

Total: 224 TMDLs; 224 Causes of Impairment Addressed

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TMDL Document Search

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