>> Questions or Comments: waterquality@tceq.texas.gov
You are here:

Hydrography Data and Map-Based Data Viewers

Links to data for stream segments, Level 4 ecoregions, and other data layers for use in ArcGIS. Statewide map-based viewers for surface water information.
map of Texas river basins

Data Viewers

Viewers use a map-based user interface to give access to data. These pages are sometimes slow to load.

return to top Return to top

GIS Data Sets

Data layers for use in ArcGIS. Includes data such as stream, lake, and bay segments; permitted wastewater outfalls; regulatory boundaries; and land use. Some file sizes are large (more than 10 MB) and are therefore may be slow to download or may "timeout" before download is complete.

return to top Return to top