River Authorities and Water Districts
- Angelina-Neches River Authority
- Bandera County River Authority and Groundwater District
- Brazos River Authority
- Colorado River Municipal Water District
- Guadalupe-Blanco River Authority
- Lavaca-Navidad River Authority
- Lower Colorado River Authority
- Lower Neches Valley Authority
- North Texas Municipal Water District
- Nueces River Authority
- Palo Duro Water District
- Red River Authority
- Sabine River Authority
- San Antonio River Authority
- San Jacinto River Authority
- Sulphur River Basin Authority
- Tarrant Regional Water District
- Trinity River Authority
- Upper Colorado River Authority
- Upper Guadalupe River Authority
- Upper Trinity Regional Water District
- West Central Texas Municipal Water District