Aquifer Properties and Well Yield Data
This page provides access to aquifer test results and well yield data collected across Texas. These data help characterize aquifer performance, including transmissivity, storativity, and well productivity. While some datasets are still being finalized, serveral historical and modern resources are available below.
Available Resources
Historical Reports
| Number | Report Title | Published |
|---|---|---|
| Report 98 | Compilation of Results of Aquifer Tests in Texas | 1969 |
| Report 381 | Compilation of Results of Aquifer Tests in Texas | 2012 |
| Report 325 | Test Well Drilling Investigation to Delineate the Downdip Limits of Usable-Quality Ground Water in the Edwards Aquifer in the Austin Region, Texas | 1990 |
| Contracted Report 1004831116 | Aquifer Test and Related Well Information from Public Water Supply wells in Groundwater Management Area 8 | 2012 |
| Contracted Report 94483049a | A Review and Evaluation of the Available Hydrologic Data on the Groundwater Resources under the El Paso County Water Authority and Fabens WCID Leases | 1995 |
| LP-133 | Water-level, recharge, Discharge, Specific-Capacity, Well-Yield, and Aquifer-test Data for the Edwards Aquifer in the San Antonio Area, Texas | 1980 |
Well Yield Data
Groundwater Availability Models
Some aquifer properties are also included in Groundwater Availability Models (GAMs). These models and supporting documentation can be downloaded from the GAM Downloads page.
Need More Detailed Data?
We are currently compiling transmissivity and storativity data from historical reports and Groundwater Availability Certification documents. While this dataset is not yet publicly available , we can provide data upon request.
To request aquifer test data: Email groundwaterdata@twdb.texas.gov with your area of interest and data needs.
Stay Updated
This page will be udpated as new datasets and tools become available. Please check back or contact us with questions.