Geologic Atlas of Texas
A geologic atlas displays various geological features and shows the surface extent of geologic formations (and aquifers). Check out these tools to explore Texas geology.
Since September 9, 2025: Texas communities are being targeted in a phishing campaign with emails posing as TWDB. Click here for more information.
Scheduled maintenance will be performed on Saturday, October 4, 2025, from 7:00 AM CDT - 7:00 PM CDT. Outages are expected. Thank you for your patience as we improve our services.