Southern Portion of the Carrizo-Wilcox AquiferGroundwater Availability Model (GAM)This map shows the extent and location of the southern portion of the Carrizo-Wilcox Aquifer 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.

GAM Update: Southern portion of the Carrizo-Wilcox Aquifer

Draft Conceptual Model Report

Draft Conceptual Model Report: Update to the Groundwater Availability Model for Southern Portion of the Carrizo-Wilcox, Queen City, and Sparta Aquifers.

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
SAF 2 3/4/2021 Online meeting (video)

 

Current GAM: Southern portion of the Carrizo-Wilcox Aquifer

Model Files (2004, 2.01)

Please see the GAM files download page for a copy of the model files.

Aquifer Data

Aquifer data is only available as a package for the entire model area and requires GIS software for processing. Please see the GAM files download page for aquifer data.

Model Report (2003)

"Groundwater Availability Model for the Southern Part of the Carrizo-Wilcox Aquifer in Texas (2003)".

We are listing the 2003 report above as a resource on the conceptual analysis and data for the Carrizo-Wilcox Aquifer, an aspect that was not addressed by the 2004 GAM report.

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.

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