Marathon AquiferGroundwater Availability Model (GAM)

This map shows the extent and location of the Marathon Aquifer.

The Texas Water Development Board (TWDB) contracted with Daniel B. Stephens & Associates (DBS&A) to develop a conceptual model of the Marathon Aquifer in Texas. The conceptual model report will be available in 2022. TWDB will use this information to develop a Groundwater Availability Model for the Marathon Aquifer.

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