The Middle Trinity Aquifer is a critical groundwater resource in Hays County, providing the sole source of drinking water to many residents living in the county. It is also the source of ecologically and culturally important artesian springs that provide baseflow to the Blanco River, which is the primary source…

View the executive summary here. The Trinity Aquifer in Hays County is an important groundwater resource which is the only available source of drinking water to people living in central and western Hays County, and is the source of ecologically, culturally, and economically important springs within the Blanco River Basin.…

The Barton Springs/Edwards Aquifer Conservation District (BSEACD), in cooperation with Travis County, compiled existing and new hydrogeologic data to evaluate groundwater resources in southwestern Travis County (SWTC). Analysis and interpretation of these data provide the foundation for hydrogeologic evaluations presented in the Hydrogeologic Atlas of Southwest Travis County, Central Texas…

Groundwater availability from the Edwards and Middle Trinity Aquifers in the study area is generally limited, however, the Lower Trinity Aquifer within the study area is untested because of the aquifer depths, assumed low yields, and poor water quality. This study provides an initial assessment of groundwater availability in a…

The full report or sections of the Atlas are available at the University of Texas at Austin Texas ScholarWorks. Click the title above or the “Read More” button below.

Hays County is experiencing some of the highest growth rates in the country, and groundwater is the primary option for water in the county. One spring in the study area, Jacob’s Well, experiences periodic cessation of flow due to a combination of drought and pumping from nearby water-supply wells. Jacob’s…

The Edwards and Trinity Aquifers are major aquifers of Central Texas that provide water supply for over two million people and contain springs that are hydrologically and ecologically important to the region. The Edwards Aquifer overlies the Trinity Aquifer but is geologically juxtaposed along the Balcones Fault Zone. Thus, understanding…

The Hill Country Priority Groundwater Management Area (PGMA) was designated in 1990 in response to existing and projected groundwater availability issues within the Trinity aquifers. Anecdotal reports suggest current groundwater availability issues in the Southwestern Travis County (SWTC) portion of the PGMA. In the absence of a groundwater conservation district, the…

In 2015, the Barton Springs/Edwards Aquifer Conservation District (District) annexed the eastern portion of Hays County coincident with the Edwards Aquifer Authority boundary to extend groundwater protection and management to the previously unregulated Trinity and other non-Edwards aquifers. To estimate Trinity Aquifer pumpage, first the number of Trinity Aquifer wells…

The Barton Springs segment of the Edwards Aquifer is an important resource for the region and understanding how the aquifer functions is critical to the conservation and preservation of the resource. Groundwater tracing is an important tool used to characterize the recharge areas, flow paths, groundwater velocities, dispersion, and fate…