Northern Portion of the Carrizo-Wilcox Aquifer Groundwater Availability Model (GAM)
In 2017, the Texas Water Development Board (TWDB) contracted with GSI Environmental, Inc. to update the groundwater availability model of the northern part of the Carrizo-Wilcox, Queen City, and Sparta aquifers in Texas. A final report and model were released in April 2021.
Current GAM
Numerical Model Report
- Numerical Model Report: Groundwater Availability Model for the Northern Portion of the Queen City, Sparta, and Carrizo-Wilcox Aquifers.
- Appendices A and B.
- Appendices C through H.
Conceptual Model Report
Model Files and Associated Data
Please see the GAM files download page for a copy of the model files for the Groundwater Availability Model.
Stakeholder Advisory Forums (SAF)
Send us an email if you would like to receive SAF notifications.
| ID | Date | Location |
|---|---|---|
| SAF 1 | 5/9/2017 | Nacogdoches, Texas | SAF 2 | 8/9/2018 | Nacogdoches, Texas | SAF 3 | 8/27/2020 | Online meeting |
Other Resources
Please see the Carrizo-Wilcox, Sparta, and Queen City aquifer pages for other reports and publications.
For model runs see the GMA 11 page.