Southern Portion of the Carrizo-Wilcox AquiferGroundwater Availability Model (GAM)
In 2019, the Texas Water Development Board (TWDB) contracted with GSI Environmental, Inc. to update the groundwater availability model of the southern part of the Carrizo-Wilcox, Queen City, and Sparta aquifers in Texas. A final report and model will be released in late 2023.
The current groundwater availability model, which includes the Carrizo-Wilcox Aquifer can be accessed at Carrizo-Wilcox, Queen City, Sparta Aquifers Groundwater Availability Model. However, model users interested in details about the development of the Carrizo-Wilcox Aquifer Groundwater Availability Model should still refer to the 2003 groundwater availability model report (Version 1) listed below.
Stakeholder Advisory Forums (SAF)
Send us an email if you would like to receive SAF notifications.
| ID | Date | Location |
|---|---|---|
| SAF 1 | 8/2/2019 | Pleasanton, Texas |
Model Report
Groundwater Availability Model for the Southern Part of the Carrizo-Wilcox Aquifer in Texas (2003).
Model Files
The Carrizo-Wilcox Aquifer Groundwater Availability Models (all three portions) have been incorporated into the Carrizo-Wilcox, Queen City, Sparta Aquifers Groundwater Availiability Models. See the Carrizo-Wilcox, Queen City, Sparta Aquifers Groundwater Availability Models page for model files.
Model Grid
Model grid cells are geographically assigned to counties, groundwater conservation districts, river basins, groundwater management areas, and regional water planning areas within the model study area using a centroid based approach. The model grid is available in ESRI® shapefile format and comma-delimited text file.
See the Carrizo-Wilcox, Queen City, Sparta Aquifers Groundwater Availability Models page for the model grid.
Aquifer Data
The Carrizo-Wilcox Aquifer Groundwater Availability Models (all three portions) have been incorporated into the Carrizo-Wilcox, Queen City, Sparta Aquifers Groundwater Availability Models. See the Carrizo-Wilcox, Queen City, Sparta Aquifers Groundwater Availability Models page for aquifer data.
Stakeholder Advisory Forums (SAF)
| ID | Date | Location |
|---|---|---|
| SAF 8 | 1/13/2003 | Austin, Texas |
| SAF 7 | 11/4/2002 | San Antonio, Texas - San Antonio River Authority Board Room (100 East Guenther Street) |
| SAF 6 | 8/5/2002 | San Antonio, Texas - San Antonio River Authority Board Room (100 East Guenther Street) |
| SAF 5 | 5/30/2002 | Gonzales, Texas - Guaranty Bank Community Room (1711 North Sarah DeWitt Drive) |
| SAF 4 | 3/1/2002 | Pleasanton, Texas - Evergreen Underground Water Conservation District |
| SAF 3 | 11/27/2001 | Carrizo Springs Civic Center |
| SAF 2 | 8/7/2001 | San Antonio, Texas - San Antonio River Authority |
| SAF 1 | 4/24/2001 | San Antonio, Texas - San Antonio River Authority |
Other Resources
Please see the Carrizo-Wilcox, Sparta, and Queen City aquifer pages for other reports and publications.
For model runs see the GMA 13 page.