Groundwater Availability Model (GAM) and Geodatabase Downloads

Most of the model and data files linked on this page are very large (up to 25 gigabytes when uncompressed), and may take a long time to download.
Your requested data may often be compressed into 7-Zip format for efficient downloading. The TWDB uses 7-Zip 21.07 to compress data files and should be compatible with most zip file format utility software. 7-Zip utility software may be downloaded for free from the following link - https://www.7-zip.org/. You may also use Google to search for other free alternative zip file format utility software. Please note that any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the TWDB nor the State of Texas.

General Use Disclaimer: Although the data have been subjected to standard TWDB review protocols and are substantially complete, the TWDB reserves the right to revise the data pursuant to further analysis and review. All groundwater availability modeling data were developed for regional scale use only, and should not be used for local scale or individual site locations. Furthermore, the data are released on condition that neither the TWDB nor the State of Texas shall be held liable for any damages resulting from their authorized or unauthorized use.

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