Northern portion of the Trinity Aquifer and Woodbine AquiferGroundwater Availability Model (GAM)This map shows the extent and location of the Trinity (northern portion) and Woodbine Aquifers GAM.

The North Texas, Northern Trinity, Prairielands, and Upper Trinity Groundwater Conservation Districts contracted Intera, Inc. to develop a new numerical model for the Trinity Aquifer and Woodbine Aquifer located within Groundwater Management Area 8. The final report and model were released in 2015. The original version of the model is documented below.

Model Files

Please contact David Thorkildsen (512-936-0871) for a copy of the 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.

Download Northern portion of Trinity Aquifer model grid.

Download Woodbine Aquifer model grid.

Aquifer Data

Aquifer data is only available as a package for the entire model area and requires GIS software for processing. Due to the size of raw/source data files for this model, this information has not been posted on the web. To request the raw/source data, contact David Thorkildsen (512-936-0871).

Stakeholder Advisory Forums (SAF)

Send us an email if you would like to receive SAF notifications.

ID Date Location
SAF 4 2/25/2004 Dallas, Texas - Quoin's Dallas Facility (11111 Stemmons Freeway)
SAF 3 12/3/2003 Waco, Texas - Brazos River Authority (4600 Cobbs Drive)
SAF 2 8/5/2003 Fort Worth, Texas - Freese & Nichols, Inc. (4055 International Plaza)
SAF 1 3/19/2003 Hillsboro, Texas - Harris Education Center (200 Line Street)
Pre SAF 2/19/2002 Waco, Texas - Baylor University, Sid Richardson Science Building

Other Resources

Please see the Trinity and Woodbine aquifer pages, the Groundwater Management Area 8 GAM page, and the Research Projects in Support of Groundwater Models page for other reports and publications.

For model runs see the GMA 8 page.

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