Projects of the TMDL Program
Satellite Image of the Houston Metropolitan
Area and Galveston Bay
Photo courtesy of NASA
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 a healthy aquatic environment. The latest Index of All Impaired Waters, part of the Texas Integrated Report of Surface Water Quality, shows all impaired waterways and the strategies that are planned or underway to improve their quality.
In addition to developing and working with stakeholder to implement them, the program manages studies that determine the best management strategies for specific waterways. Learn more about TMDLs and How They Are Implemented.
TMDLs & I-Plans
- TMDLs and/or I-Plans in Development
Listed in alphabetical order by waterway or region name
- Watersheds Where TMDLs Are Being Implemented
Stakeholder-developed plans to implement TMDLs are underway.
- Aquilla Reservoir: Use as Source for Drinking Water Restored
- Segments with Total Maximum Daily Loads
A list, in numerical order by segment
- Summary of Completed TMDLs and Implementation Plans
TMDL is complete; I-Plan development or approval may be incomplete.
Includes dates of adoption or approval by the commission and EPA.
Both TMDLs and assessments, listed in alphabetical order by project name, which usually begins with a waterway or region name.