All GIS datasets are available for download in ArcGIS 9.x geodatabase or shapefile formats. All datasets are in DD NAD 83. Please click a data category below to open or right click to save the datasets to your desktop. To preview the data, please click the thumbnail for a larger image. All shapefiles are zipped.
Note: For Lake Contour Data or Bathymetric Data, please refer to the Hydrographic Surveys.
The GIS datasets listed below are related to various types of natural features. Although TWDB utilitizes this data in our most commonly used maps, some of the datasets were created and are maintained by other state and federal agencies.
Texas Hillshade - Background image used in statewide maps, Generated from DEMs.
Texas Terrain Color Ramp - Texas hillshade raster plus color ramp.
Boundaries for various administrative units including: Regional Water Planning Areas and Groundwater Conservation Districts are approximate and may not accurately depict legal descriptions.
Groundwater Management Areas - GMAs - Groundwater Managment Area boundaries, approved December 2011.
Well Data from TWDB Groundwater Database - Updated April 2013.