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Watersheds Where TMDLs Are Being Implemented

Stakeholders in the watershed develop implementation plans, or I-Plans, to bring about the pollutant reductions set forth in total maximum daily loads (TMDLs). Both TMDLs and I-Plans are completed for watersheds listed on this page, and stakeholders are actively engaged in working to improve water quality. Projects are listed in alphabetical order by waterway or geographic region name.
communities working together taking care of our rivers, lakes, and bays

The TMDL Program works to restore Texas waterways that have limited quality in relation to one or more of their assigned uses, such as recreation, fishing, or healthy aquatic environment.

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Title Description
Aquilla Reservoir: Improving the Quality of Drinking Water Sources A successful TMDL project to reduce atrazine in Aquilla Reservoir, which is a source of drinking water for several communities. The TMDLs are adopted and the I-Plan is approved.
Arroyo Colorado: A TMDL Project for Legacy Pollutants and Organics A completed project to reduce legacy pollution from chemicals and make it safe to eat fish from the waterways. The TMDLs are adopted and the I-Plan is approved.
Austin Area Watersheds: A TMDL Project to Protect Recreational Uses A community project to reduce bacteria and protect recreational safety in Waller, Walnut, and Shoal creeks and Taylor Slough in the city of Austin. The Austin community has developed an Implementation Plan (I-Plan), which together with TMDLs developed by the TCEQ with community feedback, provide the the road map for improving water quality. The commission has adopted the TMDLs and approved the I-Plan.
Carters Creek Watershed: Implementing TMDLs to Protect Recreational Uses A community project to develop and implement TMDLs to reduce bacteria levels and protect recreational uses of the creek. Together, the adopted TMDL and the approved implementation plan are the road map to improving water quality in the creek.
Clear Creek: A TMDL Project for Volatile Organic Compounds A completed project to reduce pollution from volatile organic compounds (VOCs) that were making it unsafe to eat fish caught in the creek. The total maximum daily loads are adopted and the implementation plan is approved.
Clear Creek: A TMDL Project for Chlordane A completed project to address reduce chlordane in fish and protect the safety of consumers. The total maximum daily loads are adopted and the implementation plan is approved.
Colorado River Below E.V. Spence Reservoir: Implementing a Plan to Improve Water Quality A community project to implement TMDLs that reduce salinity from chloride, sulfate, and dissolved solids in the Colorado River below E.V. Spence Reservoir. The adopted TMDL and the approved I-Plan combined are the road map to improving water quality in the creek.
Dallas and Tarrant Counties: A TMDL Project for Legacy Pollutants A total maximum daily load (TMDL) project to reduce legacy pollutant loads in streams and rivers in Dallas and Tarrant Counties. Together, the adopted TMDL and the approved I-Plan are the road map to improving water quality.
Dickinson Bayou: Implementing a Plan to Protect Recreational Uses A community project to protect recreational uses through a TMDL to reduce bacteria. The TMDL is adopted and the I-Plan is approved. Together, the TMDL and I-Plan are the road map to improved water quality.
E.V. Spence Reservoir: Implementing TMDLs for Total Dissolved Solids and Sulfate A project to improve water quality by reducing total dissolved solids (TDS) and sulfate in E.V. Spence Reservoir. Together, the adopted TMDLs and the approved I-Plan are the road map to improved water quality.
Fort Worth Area: A TMDL Project for Legacy Pollution A completed project to reduce legacy pollutants. Together, the adopted TMDL and the approved I-Plan are the road map to improving water quality.
Gilleland Creek: Implementing a Plan to Protect Recreational Uses The goal of this current project is to keep recreation safe in Gilleland Creek by reducing bacteria levels. The adopted TMDL and the approved I-Plan combined are the road map to improving water quality in the creek.
Greater Trinity Region: Implementing a Plan to Protect Recreational Uses The goal of this project is reduce bacteria levels and protect recreational safety in waterways of the Dallas-Fort Worth Metroplex. The stakeholders and the TCEQ developed total maximum daily loads (TMDLs) and an implementation plan, which together are the road map to improving water quality. The TCEQ has adopted the TMDLs and approved the Implementation Plan.
Guadalupe River Above Canyon Lake: Implementing a Plan to Protect Recreational Uses The goal of this current project is to keep recreation safe in this segment of the river by reducing bacteria levels. The adopted TMDL and the approved I-Plan combined are the road map to improving water quality in the creek.
Houston Ship Channel: A TMDL Project for Nickel A completed project to limit nickel concentrations in the Houston Ship Channel. The TMDL is adopted and the I-Plan is approved. Together, the TMDL and I-Plan are the road map to improved water quality.
Houston-Galveston Region BIG: Implementing a Plan to Protect Recreational Uses The goal of this project is to reduce bacteria levels in waterways of the Houston area to make them safer for recreation. The stakeholders of the Bacteria Implementation Group (BIG) and the TCEQ developed total maximum daily loads (TMDLs) and their Implementation Plan, which together are the road map to improving water quality. The TCEQ has adopted the TMDLs and approved the Implementation Plan.
Lake Austin - A TMDL Project for Dissolved Oxygen A completed project to improve conditions for aquatic life by increasing dissolved oxygen in Lake Austin. Together, the adopted TMDL and the approved I-Plan are the road map to improving water quality.
Lake O' the Pines: Implementing a Plan to Protect Aquatic Life A current project to improve conditions for aquatic life by increasing dissolved oxgen levels in the lake. Together, the adopted TMDLs and approved I-Plan are the road map to improved water quality.
Lake Worth Watershed: A TMDL Project for PCBs in Fish Tissue A completed project to improve water quality by reducing polychlorinated biphenyls (PCBs) in Lake Worth. The adopted TMDLs and approved implementation plan together are the road map to improving water quality.
Lower Sabinal River: A TMDL Project for Nitrate-Nitrogen A completed project to improve water quality in the Lower Sabinal River. The TMDL is adopted and the implementation plan is approved; together, they provide the road map for improved water quality.
Lower San Antonio River: A Community TMDL Project to Protect Recreational Uses A community project to reduce bacteria concentrations and protect recreational safety in the river. The TMDLs are adopted and the I-Plan is approved. Together, the TMDLs and I-Plan provide the road map to improving water quality.
Mission and Aransas Rivers: A Community Project to Protect Recreational Uses A community project to keep recreation safe in segments of the Mission and Aransas rivers by reducing bacteria levels. Together, the adopted TMDLs and approved implementation plan provide the road map for improving water quality.
North Bosque River: Implementing a TMDL to Protect General Uses A project to improve water quality by developing and implementing TMDLs. The TMDLs are adopted and the I-Plan is approved; together, they provide the road map to improved water quality.
Nueces Bay: A TMDL Project for Zinc A project to develop and implement a TMDL to reduce zinc in oyster harvesting waters. The TMDL is completed and the I-Plan is approved.
Orange County Watersheds: A TMDL Project to Protect Aquatic Life and Recreational Uses A community project to improve water quality for support of recreational and aquatic life uses. TMDLs were developed and adopted for bacteria, dissolved oxygen, and pH. Stakeholders developed the approved implementation plan, which together with the TMDLs is the road map for improving water quality.
Petronila Creek: Implementing a Plan to Improve Water Quality A project to implement TMDLs that reduce salinity from chloride, sulfate, and dissolved solids in Petronila Creek. Together, the adopted TMDLs and the approved Implementation Plan provide the road map to improved water quality.
Tres Palacios Creek: A Community Project to Protect Recreational Uses A project to reduce bacteria and protect recreational safety in Tres Palacios Creek. The stakeholders and the TCEQ are developing a total maximum daily load (TMDL) and implementation plan, which together will be the road map for improving water quality. The TMDL is adopted and the I-Plan is approved.
Upper Oyster Creek: Implementing TMDLs to Protect Aquatic Life and Recreational Uses A project to reduce bacteria and increase dissolved oxygen to protect recreational and aquatic life uses. The TMDLs are adopted and the I-Plan is approved. Together, they provide the road map to improved water quality.
Upper San Antonio River: A Community Project to Protect Recreational Uses A community project to reduce bacteria levels and protect recreational safety in the river. Stakeholders worked together to develop an approved I-Plan, which together with the adopted TMDLs is the road map to improving water quality.
Upper Texas Gulf Coast: A Project for Bacteria in Oyster Waters A community project to develop and implement TMDLs that reduce bacteria in oyster waters. The Department of State Health Services uses levels of certain bacteria as an indicator of the safety of oyster harvesting. The TMDLs are adopted and the I-Plan is approved. Together, they provide the road map to improved water quality.