San Antonio River Basin, Leon River, and Peach Creek: A TMDL Project for Bacteria
Counties: Bastrop, Bexar, Caldwell, Comanche, Coryell, DeWitt, Erath, Fayette, Goliad, Gonzales, Guadalupe, Hamilton, Karnes, Mills, Refugio, Victoria, Wilson
River Basins: San Antonio, Guadalupe, Brazos
Segments: 1221, 1803C, 1901, 1910, 1910A, 1911
In seven streams in the San Antonio, Brazos, and Guadalupe River Basins, water quality testing found concentrations of bacteria that may pose a health risk for swimmers. Swimming and other forms of recreation in which people come into direct contact with the water are called “contact recreation” in the state’s standards for water quality.
The goal of this project was to evaluate the need for TMDLs to reduce bacteria concentrations to within acceptable risk levels in the affected segments—the Medina River below the Medina Diversion Lake (Segment 1903), the Leon River below Proctor Lake (Segment 1221), Peach Creek (Segment 1803C), San Antonio River (Segment 1901), Salado Creek (Segment 1910), Walzem Creek (Segment 1910A), and Upper San Antonio River (Segment 1911).
Additional data collected from the Medina River below the Medina Diversion Lake (Segment 1903) indicated that the segment is meeting the applicable criteria; consequently, no TMDL will be developed for the segment unless conditions change. Four projects have been formed to develop TMDLs for the other six segments (see below).
Because of the geographic separation among the watersheds, the TCEQ formed four subprojects to develop the necessary TMDLs. Get information on development of the TMDLs by following the links below.
- Leon River below Proctor Lake (Segment 1221)
- Peach Creek (Segment 1803C)
- Lower San Antonio River (Segment 1901)
- Upper San Antonio River (Segments 1910, 1910A, and 1911)
Please e-mail us at firstname.lastname@example.org, and reference the San Antonio–Leon–Peach assessment project in the subject line. Or call Natalie Bell at 512-239-6941.