Geologic and Hydrogeologic Resources

Texas Water Development Board well database viewer. This (somewhat clunky) map viewer allows you to view and select information from two databases. The first is the TWDB database that are a sampling of wells in an area that have various amounts of data associated with them such as water level and water chemistry. The second database is the submitted well driller’s database that allows (since about 2002) to see the driller’s log of wells throughout Texas.

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A network of monitor wells in the various Trinity units.

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Texas Water Development Board Publications

Provides a good summary of each aquifer in Texas, including the Trinity on page 67.

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Still a classic reference and combined with the Hydrogeologic Atlas below, is a good place to start understanding the geology and hydrogeology.

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This contains the relevant documents and technical information for this region pertaining to the DFC and Managed Available Groundwater (MAG).

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Barton Springs/Edwards Aquifer Conservation District

BSEACD has established a new page on their website devoted to the annexation of the white zone of the Trinity in Hays County. It will certainly expand in the days to come, but it currently includes a copy of the final bill, a map of the new area as well as the existing boundaries of the BSEACD, and a FAQ.

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Assorted technical publications on groundwater in the Edwards and some addressing the Trinity.

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This publication is the latest synthesis on the geology and hydrogeology of this area. The document was developed as a public-service document, and is somewhat technical. The document is hosted by UT Austin and look for the PDF document titled “Atlas Book.”

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There is a lot of talk about Groundwater Conservation Districts and this document summarizes the BSEACD very well.

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