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This report was prepared for the Wimberley Valley Watershed Association with financial support from the Cynthia and George Mitchell Foundation Water Program. Jacob’s Well is the largest perennial spring in the Trinity Aquifer and one the longest underwater caves in Texas. The cave and spring are... View

This report examines existing evidence that wastewater effluent discharged in the Barton Springs and San Antonio Edwards Aquifer contributing zones under Texas Land Application Permits (TLAPs), issued by the Texas Commission on Environmental Quality, have failed to protect springs, creeks, rivers, and groundwater. Significant findings... View

The Cypress Creek Project is a coalition of voluntary efforts of community stakeholders, coordinated with technical and research assistance provided by River Systems Institute. The main goal for this project is to ensure that the long-term integrity and sustainability of the Cypress Creek watershed is... View

The geology of central Texas is dominated by its karst topography. As the limestone has dissolved, the subterranean habitats, and springs that provide the habitats for these salamanders, have become available. The region is characterized by historically abundant surface springs, large cave systems, and dramatic... View

This study describes the fish and benthic macroinvertebrate communities of the spring-fed Cypress Creek (Hays County). Jacob's Well is a karstic spring which discharges into Cypress Creek approximately 5 km northwest of Wimberley in westcentral Hays County (at 30°02' N,  8°08' W), and is the... View

This report examines the changing methodology of groundwater management in Texas by studying the manner in which one Groundwater Management Area (GMA 9 in the Texas Hill Country) complied with new legislative mandates passed in 2005. Texas House Bill (HB) 1763 introduced several changes to... View

In the Central Texas Hill Country, citizens and local governmental entities are at a crossroads—new development proposals are prompting public action on long-term issues concerning regional water supplies, water reclamation and reuse, and storm runoff pollution control. Each land use/water supply decision that is made... View

Watersheds know no political boundaries. Except for the borders of a few countries and a few of the United States, this adage is true. Most watersheds include many state, provincial, and local governments and this ‘‘balkanization’’ is what makes the policy of watershed management so... View