Alternative Title

BSEACD Report of Investigations 2006-1025



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Publication Date

January 2007


ABSTRACT More than 50,000 water-level measurements from 1937 to 2005 in the Balcones Fault Zone of Central Texas were compiled from 49 wells, and one quarry. Data represent water levels from the Edwards, Trinity, and Austin Chalk Aquifers. A simple database was constructed to compile the water-level and well-construction data. The purpose of this report is to provide a foundation for future hydrogeologic investigations. INTRODUCTION Groundwater is an important resource for Texans and constituted nearly 60% of all water used by Texans in 1999 (TWDB, 2002). Aquifers along the Balcones Fault Zone in Central Texas provide an important groundwater resource for industrial, domestic, recreational, and ecological needs. The study area is located along the Balcones Fault Zone of Central Texas within portions of Travis and Hays counties (Figure 1). Water- level data within this report are primarily from wells completed within the Edwards, and to a lesser extent, the Trinity Aquifer. A relatively minor, locally water-bearing unit in the study area is the Austin Chalk. This paper and accompanying database present a compilation of continuous water-level data from groundwater resources in the study area. Groundwater levels provide critical information about the hydrologic relationships of recharge and discharge to storage within an aquifer, and the direction of groundwater flow. Long-term, systematic measurements of water-level data are essential to develop groundwater models and to design, implement, and monitor the effectiveness of groundwater management programs (Taylor and Alley, 2001). This report includes data that numerous agencies have collected over the years: the United States Geological Survey (USGS), Texas Water Development Board (TWDB), Edwards Aquifer Authority (EAA), Hays-Trinity Groundwater Conservation District (HTGCD), San Antonio Water Systems (SAWS), and the Barton Springs/Edwards Aquifer Conservation District (BSEACD). Purpose and Scope This report compiles more than 50,000 water-level measurements made from 1937 to 2005 for 49 wells (and one quarry) completed in the Edwards, Trinity, and Austin Chalk Aquifers. A simple Microsoft(r) Excel-based database was constructed and accompanies this report. The database contains well-completion information and water-level data. The purpose of this report is to provide a foundation for future hydrogeologic investigations and evaluations of water resources in central Texas. The database presented in the report is currently the most comprehensive available for the study area. Open Access - Permission by Publisher See Extended description for more information.


United States, Geology









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