GIS Data for the Atlas of Texas Surface Waters GIS project files for the Atlas of Texas Surface Waters, organized by major river basin. The classified segments were established
by the TCEQ in the Texas Surface Water Quality Standards.
Hydrography Maps and Data Links to the Atlas of Texas Surface Waters, data for Level 4 ecoregions and other hydrology data layers for use in ArcGIS,
statewide hydrography maps, and map-based viewers for surface-water information.
Quarterly Reports on Application of Class B Sludge Under state law, anyone who has a permit to apply Class B sludge that was issued on or after September 1, 2003, must report
this information about each delivery or application made during the preceding quarter
TCEQ Data Clearinghouse Standard and customized data and reports available for purchase from the TCEQ and how to request them.