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Edwards Aquifer, Central Texas

Edwards Aquifer, Central Texas

The Edwards Aquifer is composed of Lower Cretaceous age carbonate rock, and has a freshwater zone extending through Bell, Williamson, Travis, Hays, Comal, Bexar, Medina, Uvalde, and Kinney counties. It can be divided into two segments along a groundwater flow divide north of Kyle in Hays county. It is an essential source of water for urban and rural needs, discharging approximately 800,000 acre feet of water a year to wells and springs on average since 1970. Because of the aquifer's location, utility, and physical characteristics (including the rapid water flow through the system, variability of flow, and susceptibility to contamination) much scientific and public policy study is being expended on this crucial element of the Central Texas environment.

The following references are a compilation of documents that are 1) primarily devoted to study of various aspects of the Edwards Aquifer and 2) available in the Walter Geology Library. Note that no journal articles are included on this list. To find journal literature, consult Georef or the Bibliography and Index of Texas Geology, the Bibliography and Index of Geology, or the annual index Publications of the U.S. Geological Survey.

Resources

Barton Springs/ Edwards Aquifer Conservation District

Bureau of Economic Geology (University of Texas)

Edwards Aquifer Authority 
Regulatory agency committed to monitoring and preserving the Edwards Aquifer.

Edwards Aquifer Research & Data Center
Texas State University-San Marcos.

Edwards Aquifer Website
Maintained by Gregg Eckhardt.

Texas Commission on Environmental Quality (TCEQ)
Formerly TNRCC.

Texas Natural Resources Information System (TNRIS)
Part of the Texas Water Development Board which specializes in natural resources data and spatial presentation.

Texas State Library and Archives Commission

Texas Water Resources Institute
Texas A&M-College Station.

U.S. Geological Survey (USGS)

Correlation of Structural Lineaments and Fracture Traces to Water-Well Yields in the Edwards Aquifer, Central Texas. Kenneth Bower Alexander, MA, UT Austin. 1990.

Detailed Hydrogeologic Maps of the Comal and San Marcos Rivers for Endangered Species Habitat Definition, Texas. Joanna Catherine Crowe. MA, UT Austin. 1994.

Diagenesis of the Lower Cretaceous Edwards Group in the Balcones Fault Zone Area, South-Central Texas. Patricia Mench Ellis. PhD, UT Austin. 1985.

Economic Analysis of Edwards Aquifer Water Management. Carl Robert Dillon, PhD, Texas A&M. 1991.

Edwards Limestone in the Balcones Fault Zone, South-Central Texas. Patrick L. Abbott. PhD, UT Austin. 1973.

Evolution of Fresh and Saline Groundwaters in the Edwards Aquifer, Central Texas: Geochemical and Isotopic Constraints on Processes of Fluid-Rock Interaction and Fluid Mixing. Greg Christopher Oetting. MA, UT Austin. 1995.

Geological Appraisal of the Edwards Aquifer, San Antonio Region: Aquifer or Underground Stream. Stephanie D. Phillips, BS, Baylor University. 1993.

Geology of Bat Cave Quadrangle, Comal and Bexar Counties, Texas. John Hartnell Newcomb. MA, UT Austin. 1971.

Geology of San Marcos Springs Quadrangle, Hays County, Texas. Kenneth James DeCook. MA, UT Austin. 1957.

Geomorphology and Hydrogeology of the Edwards Plateau Karst, Central Texas. Ernst H. Kastning. PhD, UT Austin. 1983.

Geomorphology, Hydrogeology, Geochemistry and Evolution of the Karstic Lower Glen Rose Aquifer, South-Central Texas. George Veni, PhD, Pennsylvania State University. 1994.

Hydrogeology of a Portion of the Washita Prairie Edwards Aquifer: Central Texas. Stan Lee Cannata. MS, Baylor University. 1988.

Hydrochemical Facies in the Badwater Zone of the Edwards Aquifer, Central Texas. Tonia Judith Clement. MA, UT Austin. 1989.

Hydrodynamics of Small Springs, Edwards-Trinity Aquifer, Bandera County, Texas. Andrews, Jeremy J. MS, Baylor University. 2005.

Hydrogeologic Map and Characteristics of the Recharge Zone of the Edwards Aquifer, Bexar County, Texas. William G. Stein, MS, UT San Antonio. 1993.

Hydrogeology of Barton Springs, Austin, Texas. Rainer Klaus Senger, MA, UT Austin. 1983.

Hydrogeology of the Lower Cretaceous Edwards and Trinity Group Formations near Junction (Kimble County) Texas. Stephen Robert Allen. MA, UT Austin. 1997.

Mobile Sediments in a Karst Aquifer. Barbara June Mahler. PhD, UT Austin. 1997.

Model for determining optimal pumping and recharge of large-scale aquifers. Nisai Wanakule, PhD, UT Austin. 1984. (Also UT Center for Research in Water Resources, Technical Report 228 at TD 201 T3 T492 no.217 Engineering Library.)

Potential for Springflow Augmentation at Comal and San Marcos Springs, Central Texas. Matthew Martin Uliana. MA, UT Austin. 1995.

Quality of Water in the Edwards Aquifer, Central Travis County, Texas. Ann Elizabeth St. Clair. MA, UT Austin. 1979.

Source and Distribution of Hydrocarbons in the Gaines Creek Watershed, Austin, TX. Michael Richard Harren. MA, UT Austin. 1996.

Source of Nitrate in Water of the Edwards Aquifer, South-Central Texas. Lawrence Anthony Browning. MA, UT Austin. 1977.

Source of the Water Along the Balcones Fault Escarpment. Alfred Knox Tyson. MA, UT Austin. 1924.

Stochastic Analysis of Nonlinear, Nonstationary Water Storage Systems in Continuous and Discrete Time. Fidel Angel Saenz de Ormijana, PhD, UT Austin. 1989. (Also UT Center for Research in Water Resources, Technical Report 228)

Use of Outcrop Fracture Measurements to Estimate Regional Groundwater Flow, Barton Springs Segment of Edwards Aquifer, Central Texas. Christopher Kent Zahm. MA, UT Austin. 1998.

Water from a Stone : The Limits of the Sustainable Development of the Texas Edwards Aquifer. Todd Hadyn Votteler, PhD, Southwest Texas State University. 2000.

An Annotated Bibliography of the San Marcos River, Its Source and Tributaries. 1992.

Barton Springs / Edwards Aquifer Hydrogeology and Groundwater Quality. 1994.

Bulletin, Edwards Underground Water District (San Antonio). No. 1-39.

Bulletin, Texas Board of Water Engineers
GB 1025 T4 A35 [number]

Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas Aug.1968 - Jan.1975. 1976.

Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, (year), with 1934-(year) Summary. Annual. Bulletin. Edwards Underground Water District No. 40.

Defining the Edwards Aquifer Freshwater / Saline-Water Interface With Geophysical Logs and Measured Data (San Antonio to Kyle, Texas) 1993. Edwards Underground Water District Report 93-06.

Discrete-State Compartment Model of a Limestone Groundwater Reservoir - the Edwards Aquifer near San Antonio, Texas. 1983.

Drilling, Construction, and Testing of Monitor Wells for the Edwards Aquifer Bad Water Line Experiment. 1986.

Economic and Hydrologic Implications of Proposed Edwards Aquifer Management Plans. 1993. Texas Water Resources Institute (TX A&M) TR-158.

Edwards Aquifer Hydrogeologic Status Report for 1992. 1993. Edwards Underground Water District Report 93-05.

The Edwards Aquifer: Perspectives for Local and Regional Action. 1987.

Edwards Aquifer Storage Assessment, Kinney County to Hays County, Texas. 1993. Hovorka, S., et al. Bureau of Economic Geology / Edwards Underground Aquifer District.

Edwards (Balcones Fault Zone) Aquifer Test Well Drilling Investigation. 1975.

Effects of Drought in Central and South Texas. 1963. US Geological Survey Professional Paper 372C.

Environmental Tritium in the Edwards Aquifer Central Texas 1963-71. 1975 US Geological Survey Open File Report 74-362.

Evaluation of Sustainable Yield of the Barton Springs Segment of the Edwards Aquifer, Hays and Travis Counties, Central Texas. Barton Springs/Edwards Aquifer Conservation District, Oct. 2004.

Evapotranspiration: A Method of Disposing of Septic Tank Effluent. 1977 Edwards Underground Water District.

A Finite-Element Model for Simulation of Two-Dimensional Steady-State Ground-Water Flow in Confined Aquifers. 1990. US Geological Survey Open-File Report 90-187.

Geochemical and Isotopic Analyses of Waters Associated with the Edwards Limestone Aquifer, Central Texas. 1976.

Geology and Ground-Water Resources of Comal County, Texas. 1952 USGS Water Supply Paper 1138.

Geology and Ground-Water Resources of Comal County, Texas. 1947 Texas Board of Water Engineers.

Geology and Hydrology of the Northern Segment of the Edwards Aquifer With an Emphasis on the Recharge Zone in the Georgetown, Texas, Area. 1987. Kreitler, C.W. et al, Bureau of Economic Geology.

Groundwater Tracing Study of the Barton Springs Segment of the Edwards Aquifer, Southern Travis and Northern Hays Counties, Texas/Barton Springs/Edwards Aquifer Conservation District, City of Austin Watershed Protection and Development Review Department. 2004.

Hydrogeologic Data from a Study of the Freshwater Zone/ Salinewater Interface in the Edwards Aquifer, San Antonio Region, Texas. 1987 US Geological Survey Open File Report 87-389.

Hydrologic and Geologic Data for the Edwards Aquifer Recharge Zone Near Georgetown, Williamson County, Texas, 1986-87. 1987. US Geological Survey Open File Report 87-691.

Hydrologic and Hydrochemical Data for the Edwards Aquifer in Hays and Comal Counties, Oct. 1983 to June 1985. 1985. Edwards Aquifer Research and Data Center, Southwest Texas State University.

Hydrologic Investigations of the Edwards and Associated Limestones in the San Antonio Area, Texas Progress Report, 1970-71. 1972.

Hydrogeological and Hydrochemical Investigation of the Edwards Aquifer in the San Marcos Area, Hays County, Texas. 1986. Edwards Aquifer Research and Data Center, Southwest Texas State University.

Hydrogeology of the Edwards Aquifer in the San Antonio Area, Texas. 1984. US Geological Survey Open File Report 83-537.

Hydrogeology of the Northern Segment of the Edwards Aquifer, Austin Region. 1990. Bureau of Economic Geology Report of Investigations 192.   

Identification and Tabulation of Geological Contacts in the Edwards Aquifer, San Antonio Area, Texas. 1985. Texas Dept. of Water Resources LP-199 (also published as US Geological Survey Open File Rpt. 84-75).

Investigation of the Fresh / Saline-Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas. 1992. Edwards Underground Water District Report 92-02.

Lineaments and the Edwards Aquifer -- Barton Springs Segment, Travis and Hays Counties, Texas. 1989. Edwards Aquifer Research and Data Center RI-89.

Permeability Structure of the Edwards Aquifer, South Texas -- Implications for Aquifer Management. 1998. Bureau of Economic Geology Report of Investigations no.250.

Potentiometric Maps for Low to High Flow Conditions, Barton Springs Segment of the Edwards Aquifer, Central Texas. Barton Springs/Edwards Aquifer Conservation District, Report of Investigations 2007-1201.

Preliminary Report on Groundwater Tracing Studies Within the Barton and Williamson Creek Watersheds, Barton Springs / Edwards Aquifer. 1998. Barton Springs/Edwards Aquifer Conservation District.

Progress Report on Geology of the Edwards Aquifer, San Antonio Area, Texas, and Preliminary Interpretation of Borehole Geophysical and Laboratory Data on Carbonate Rocks. 1976. USGS Open File Report 76-627.

Quantity of Low-Flow in Barton Creek, Texas July 6-8 and October 1-3, 1970. 1974. USGS Open File Report.

Proposed 10-year Plan for Continuation of Hydrologic Studies of the Edwards Aquifer,San Antonio Area, Texas. 1984. US Geological Survey Open File Report 84-817.

Regional Specific Yield of the Edwards and Associated Limestones in the San Antonio, Texas Area. 1973.

Relation of Precipitation to Annual Ground-Water Recharge in the Edwards Aquifer, San Antonio Area, Texas. 1975. US Geological Survey Open File Report 75-298.

Report, Texas Water Development Board
TD 224 T4 A333 [number]

San Antonio Regional Water Resource Study Report. 1986. Produced for the Edwards Underground Water District, San Antonio.

South Medina County Observation Well Project. 1993. Edwards Underground Water District Report 93-11.

Springflow Augmentation of Comal Springs and San Marcos Springs, Texas: Phase 1 - Feasibility Study. 1995. CRWR Technical Report 247.

Statistical Summary of Water-Quality Data Collected from Selected Wells and Springs in the Edwards Aquifer Near San Antonio, Texas. 1985.US Geological Survey Open File Report 85-182.

Suggested Design and Construction of Edwards Aquifer Wells. 1987.

Summary of Hydrologic Data for the San Gabriel River Basin and Edwards Aquifer, Georgetown Area, Texas, Water Year 1988. 1989. US Geological Survey Open File Report 89-226.

Summary of Hydrologic Data for the San Gabriel River Basin and Edwards Aquifer, Georgetown Area, Texas, Water Year 1990. 1990. US Geological Survey Open File Report 92-160.

Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/ Saline-Water Interface (Uvalde to San Antonio, Texas). 1992. Edwards Aquifer Underground Water District Report 92-03.

Water-level, Recharge, Discharge, Specific-Capacity, Well-Yield, and Aquifer-Test Data for the Edwards Aquifer in the San Antonio Area, Texas. 1980. Texas Dept. of Water Resources LP-133.

Water-Resources Investigations Report: US Geological Survey
GB 701 W375 [number]                                                              

Scientific Investigations Report: US Geological Survey
GB 701 W376 [number]

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