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The Edwards Aquifer, Central Texas

compiled by Dennis Trombatore, revised 10/2010, 4/2011

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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 the Bibliography and Index of Texas Geology, the Bibliography and Index of Geology, or the annual index Publications of the U.S. Geological Survey, which are available in the Walter Geology Library Reference area, or link to the Edwards Aquifer Bibliography (below, Internet Resources).


Agencies & Online Resources

Barton Springs/Edwards Aquifer Conservation District

Bureau of Economic Geology . Texas.

Edwards Aquifer Authority is the 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. 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 Government Publications on the Edwards Aquifer. Texas State Library and Archives Commission.

Texas Water Resources Institute. A&M, College Station

U.S. Geological Survey (USGS).


General

Alternative Regional Water Supply Plan for the Barton Springs Segment of the Edwards Aquifer. Final Report Prepared for the Texas Water Development Board Research and Planning Grants Assistance Program. 1997.
TD 224 T4 E37 1997 Geology Library

Balcones Escarpment: geology, hydrology, ecology. Guidebook, 1986 (San Antonio) meeting, Geological Society of America
QE 77 G46 1986 Field trip no.14 Geology Library

Barton Springs Eternal. 1993 Hill Country Foundation, Austin
F 394 A9 B37 1993 Geology Library

Bibliography of the Edwards Aquifer, Texas, Through 1993. 1995 USGS Open-File Report 95-336
GB 1199.3 T4 M463 1995 Geology Library

Complying with the Edwards Aquifer Rules: Technical Guidance on Best Management Practices. 2005 Texas Commission on Environmental Quality
GB 1199.3 T4 B366 2005 Geology Library

Edwards Aquifer bibliography, through 1997. Compiled by David L. Gregory, Roberto Esquilin, Gayle K. Kipp; prepared in cooperation with the U.S. Geological Survey. Report, Edwards Aquifer Authority (Texas); 98-01.
GB 1199.3 T4 E3937 Geology Library

Edwards Aquifer Extremely Productive, But... . 1986 Edwards Underground Water District
-f- GB 1199.3 T4 B8 1986 Geology Library

Edwards Aquifer: a Resource in Conflict. Sharp, JM and Banner, JL, 1997
GSA Today, v.7,#8, p.1-9, August 1997
QE 1 G727 v.7 no.8 Geology Library

Edwards Aquifer: A Texas Treasure. 1989 Witte Museum Videos: Contemporary Science Series (videotape: 20 minutes)
VIDCASS 3687 Geology Library

Edwards Aquifer: an Economic Perspective. 1989 Texas Water Resouces Institute TR-159
GB 1199.3 T4 E372 1993 Geology Library

Edwards Aquifer Ground-Water Resources: Geologic Controls on Porosity Development in Platform Carbonates, South Texas. 1996 Bureau of Econmic Geology, Report of Investigations 238
QE 167 T42 no.238 Geology Library

Edwards Aquifer Technical Guidance Document. 1994 Texas Natural Resource Conservation Commission RG-39
GB 1199.3 T4 S658 1994 Geology Library

Edwards Aquifer: Underground River of Texas. 1988 Guadalupe-Blanco River Authority
GB 1199.3 T4 E382 1988 Geology Library

Edwards-Trinity Aquifer System, San Antonio Region, Texas. 1988- USGS Water Supply Paper 2336-A, etc.
TC 801 U2 no.2336-a... Geology Library

Edwards Water Resources In Central Texas : Retrospective And Prospective.
CD-ROM 1243 Geology Library Media and Software

Environmental Geology of the Austin Area. 1976 Bureau of Economic Geology, Report of Investigations 86
QE 167 T42 no.86 Geology Library

Geologic Framework and Hydrogeologic Characteristics of the Outcrops of the Edwards and Trinity Aquifers, Medina Lake Area, Texas.
USGS Water-Resources Investigations Report 97-4290.
GB 705 T4 S635 1998 GEOL

Geology of the Edwards Aquifer: Descriptions and Recommendations. T. Ewing & W. Wilbert, eds.1991. South Texas Geological Society, (Reprints from STGS Bulletin)
GB 1199.3 T4 G464 1991 Geology Library

Groundwater chemistry in Southern Travis and Northern Hays counties, Texas, 1998 through 2008. Hunt, Brian B. Austin, Tex: Barton Springs/Edwards Aquifer Conservation District, 2009.
GB 857.2 T4 G76 2009 TEXT and CDROM Geology Library

Guide to Points of Geologic Interest in Austin. 1976 Bureau of Economic Geology, Guidebook 16
QE 167 T4245 no.16 Geology Library

Guidebook to the Geology of Travis County. 1977 UT Student Geological Society.
QE 168 T729 T494 1977 Geology Library

Hydrogeologic Framework of the Edwards-Trinity Aquifer System, West Central Texas. Barker, R.A. and Ardis, A.F. 1996 U.S. Geological Survey Professional Paper 1421-B
QE 75 P9 no.1421-B Geology Library

Inside the Edwards Aquifer. 1992 Edwards Underground Water District (videotape, 30 minutes)
Vidcass 2722 Geology Library

Lumped Parameter Model for the Edwards Aquifer. 1993 Texas Water Resources Institute, Technical Report 163
GB 1199.3 T4 W363 1993 Geology Library

Management of the Edwards Aquifer: a Critical Assessment. D.C. McKinney and D.W. Watkins. 1993. Center for Research in Water Resources Technical Report no.244
TD 201 T3 T492 no.244 Geology Library

Parsimonious Model for Simulation of Flow and Transport in a Karst Aquifer. M.E. Barrett and R.J. Charbeneau. 1996. Center for Research in Water Resources Technical Report no.269
TD 201 T3 T492 no.269 Geology Library

Regional Distribution of Permeability in the Edwards Aquifer. Hovorka, S.D. et al. 1995 Edwards Underground Water District Report 95-02
-q- S 594 H686 1995 Geology Library

Stochastic Drought Analysis of the Edwards Aquifer. Wanakule, Nisai. San Marcos, Tex.: Southwest Texas State University, 1990.
GB 1025 T4 W37 1990 GEOL

Water for Texas. Texas Water Development Board
TD 224 T4 A5744 v.1-7 Geology Library

Water Quality in South-Central Texas. 2000. USGS Circular 1212
QE 75 C5 no.1212

Water-Resource Development & Management ... Edwards Aquifer Region. 1979
HD 1695 S36 L94 Geology Library

Water, Water Conservation and the Edwards Aquifer : student workbook. 1994
GB 1199.3 T4 W373 1994 Geology Library


Graduate Research

UT Austin Geology Department Theses and Dissertations

Correlation of Structural Lineaments and Fracture Traces to Water-Well Yields in the Edwards Aquifer, Central Texas. Kenneth Bower Alexander, MA, UT Austin. 1990
THESIS 1990 AL27 Geology Library

Detailed Hydrogeologic Maps of the Comal and San Marcos Rivers for Endangered Species Habitat Definition, Texas. Joanna Catherine Crowe. MA, UT Austin. 1994
THESIS 1994 C886 Geology Library

Diagenesis of the Lower Cretaceous Edwards Group in the Balcones Fault Zone Area, South-Central Texas. Patricia Mench Ellis. PhD, UT Austin. 1985
DISS 1985 EL59 Geology Library

Economic Analysis of Edwards Aquifer Water Management. Carl Robert Dillon, PhD, Texas A&M. 1991
FILM 25856 Microforms PCL Level 1

Edwards Limestone in the Balcones Fault Zone, South-Central Texas. Patrick L. Abbott. PhD, UT Austin. 1973
DISS 1973 AB28 Geology Library

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
THESIS 1995 OE82 Geology Library

Geological Appraisal of the Edwards Aquifer, San Antonio Region: Aquifer or Underground Stream. Stephanie D. Phillips, BS, Baylor University. 1993
GB 1199.3 T4 P555 1993 Geology Library

Geology of Bat Cave Quadrangle, Comal and Bexar Counties, Texas. John Hartnell Newcomb. MA, UT Austin. 1971
THESIS 1971 N434 Geology Library

Geology of San Marcos Springs Quadrangle, Hays County, Texas. Kenneth James DeCook. MA, UT Austin. 1957
THESIS 1957 D358 Geology Library

Geomorphology and Hydrogeology of the Edwards Plateau Karst, Central Texas. Ernst H. Kastning. PhD, UT Austin. 1983
DISS 1983 K155 V.1-2 Geology Library

Geomorphology, hydrogeology, geochemistry and evolution of the karstic Lower Glen Rose Aquifer, south-central Texas. George Veni, PhD, Pennsylvania State University. 1994
GB 1199.3 T4 V464 1994 Geology Library

Hydrogeology of a Portion of the Washita Prairie Edwards Aquifer : Central Texas. Stan Lee Cannata. MS, Baylor University. 1988
GB 1199.3 T4 C36 1988 Geology Library

Hydrochemical Facies in the Badwater Zone of the Edwards Aquifer, Central Texas. Tonia Judith Clement. MA, UT Austin. 1989
THESIS 1989 C591 Geology Library

Hydrodynamics of Small Springs, Edwards-Trinity Aquifer, Bandera County, Texas. Andrews, Jeremy J. MS, Baylor University. 2005
GB 1198.3 T45 A53 2005 TEXT and CD-ROM Geology Library

Hydrogeologic Map and Characteristics of the Recharge Zone of the Edwards Aquifer, Bexar County, Texas. William G. Stein, MS, UT San Antonio. 1993
LD 5318 A893 S74 Geology Library

Hydrogeology of Barton Springs, Austin, Texas. Rainer Klaus Senger, MA, UT Austin. 1983
THESIS 1983 SE56 Geology Library

Hydrogeology of the Lower Cretaceous Edwards and Trinity Group Formations near Junction (Kimble County) Texas. Stephen Robert Allen. MA, UT Austin. 1997
THESIS 1997 AL54 Geology Library

Mobile Sediments in a Karst Aquifer. Barbara June Mahler. PhD, UT Austin. 1997
DISS 1997 M278 Geology Library

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.)
DISS 1984 W181 PCL Stacks 5K

Potential for Springflow Augmentation at Comal and San Marcos Springs, Central Texas. Matthew Martin Uliana. MA, UT Austin. 1995
THESIS 1995 UL3 Geology Library

Quality of Water in the Edwards Aquifer, Central Travis County, Texas. Ann Elizabeth St. Clair. MA, UT Austin. 1979
THESIS 1979 SA25 Geology Library

Source and Distribution of Hydrocarbons in the Gaines Creek Watershed, Austin, TX. Michael Richard Harren. MA, UT Austin. 1996
THESIS 1996 H236 Geology Library

Source of Nitrate in Water of the Edwards Aquifer, South-Central Texas. Lawrence Anthony Browning. MA, UT Austin. 1977
THESIS 1977 B821 Geology Library

Source of the Water Along the Balcones Fault Escarpment. Alfred Knox Tyson. MA, UT Austin. 1924
THESIS 1924 T988 Library Storage (PCL Stacks)

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 at TD 201 T3 T492 no.228 Geology Library.)
DISS 1989 SA16 Library Storage (PCL Stacks)

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
THESIS 1998 Z13 Geology Library

Water from a stone : the limits of the sustainable development of the Texas Edwards Aquifer. Todd Hadyn Votteler, PhD, Southwest Texas State University. 2000
GB 1199.3 T4 V683 2000 Geology Library


Guidebooks

Edwards Aquifer -- Water Quality and Land Development in the Austin Area, Texas. 1994 Gulf Coast Association of Geological Societies 44th Annual Convention
QE 79.5 G95 1994A Geology Library

Hydrogeology of the Edwards Aquifer. 1986 Geological Society of America annual meeting fieldtrip, San Antonio, 1986
QE 77 G46 1986 Geology Library

Hydrogeology of the Edwards Aquifer, Austin Area, Central TX. 1984 Bureau of Economic Geology Report of Investigations 141
QE 167 T42 no.141 Geology Library

Hydrogeology of the Edwards Aquifer - Barton Springs Segment. 1984 Austin Geological Society Guidebook 6
GB 1198.3 T4 H93 1984 Geology Library

Hydrogeology of the Edwards Aquifer - Northern Segment. 1985 Austin Geological Society Guidebook 8
GB 1025 T4 E382 Geology Library

Hydrogeology of the Edwards Aquifer - Northern Balcones and Washita Segment. 1987 Austin Geological Society Guidebook 11
-q- GB 1199.3 T4 H9476 1987 Geology Library

Hydrogeology of the Edwards Limestone Aquifer. 1973 Geological Society of America 1973 Annual Meeting (San Antonio) Field Trip no.4
QE 77 G46 1973 no.4 Geology Library

Interplay of Karst, Fractures, and Permeability in the Cretaceous Edwards Aquifer: Analogs for Fractured Carbonate Reservoirs Society of Petroleum Engineers 1997 Annual Technical Conference (Bureau of Economic Geology)
TN 872 T4 S6362 1997 Geology Library

A Look at the Hydrostratigraphic Members of the Edwards Aquifer in Travis and Hays Counties, Texas. 1995 Austin Geological Society Guidebook, May 1995
GB 1199.3 T4 L664 1995 Geology Library

Soils, Landforms, Hydrologic Processes, and Land-Use Issues -- Glen Rose Limestone Terrains, Barton Creek Watershed, Travis County, Texas. 1993 Society of Professional Earth Scientists Dec. 1992 Fieldtrip
QE 168 T7 S656 Geology Library

Structure Of The Balcones Fault System And Architecture Of The Edwards And Trinity Aquifers, South-Central Texas. Geological Society of America South-Central Meeting Spring 2005 (premeeting field trip no. 1)
QE 606.5 U6 F47 2005 Geology Library

Water Quality Issues for Barton Creek and Barton Springs Austin Geological Society Guidebook Fall 1991
TD 224 T4 W3212 1991 Geology Library

An Introduction to the Balcones Fault Zone Segment of the Edwards Aquifer in South-Central Texas, 2005, Tenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst
GB 1025 T4 I58 2005 GEOL


Maps

Austin, Texas, Eco-Location Map. 1995 Hill Country Foundation, Austin
G 4034 A9 G3 1995 H5 Geology Library, Tobin Map Collection

Edwards Aquifer Recharge Zone Maps. On USGS topographic map base
G 4032 E3 C34 S24 E3 Geology Library, Tobin Map Collection

Geologic map of the Edwards aquifer and related rocks in northeastern Kinney and southernmost Edwards counties, south-central Texas / David W. Moore ; U.S. Department of the Interior, U.S. Geological Survey. 2010.
MAP USGS I(SIM)-3105 Geology Library, Tobin Map Collection

Geologic map of the Edwards Aquifer in Northern Medina and Northeastern Uvalde Counties, South-central Texas.
USGS Open-file report 2006-1372

Recharge Zone of the Edwards Aquifer Hydrologically Associated with Barton Springs in the Austin Area, Texas. 1986
USGS Water-Resources Investigation 86-4062
GB 701 W375 86-4062 Geology Library

Structure Map of the San Antonio Segment of the Edwards Aquifer and Balcones Fault Zone, South-Central Texas: Structural Framework of a Major Limestone Aquifer: Kinney, Uvalde, Medina, Bexar, Comal and Hays Counties. Collins, E.W. and Hovorka, S.D. 1997
Bureau of Economic Geology Miscellaneous Map no.38
G 4032 E3 C55 1997 C6 Geology Library, Tobin Map Collection

Water Resources of the Edwards Aquifer Region. 1987
Edwards Underground Water District, San Antonio.
GB 1025 T4 W3849 1987 Geology Library
G 4032 E3 C34 1987 E3 Geology Library, Tobin Map Collection


Research Reports

An Annotated Bibliography of the San Marcos River, Its Source and Tributaries. 1992
TD 171.3 T4 S22 1992 Geology Library

Barton Springs / Edwards Aquifer Hydrogeology and Groundwater Quality. 1994
GB 1199.3 T4 B37 1994 Geology Library

Bulletin, Edwards Underground Water District (San Antonio).
GB 1025 T4 E262 no.1-39 Geology Library

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.
GB 1199.3 T4 S65 2004 Geology Library

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
GB 1025 T4 G77 2004 Geology Library

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.
GB 1199.3 T4 H862 2007 TEXT and CDROM Geology Library

Bulletin, Texas Board of Water Engineers

GB 1025 T4 A35 Geology Library

See especially the following:

#5601, Geology and Ground-Water Resources of Medina County, Texas. 1956

#5608, Ground-Water Resources of the San Antonio Area, Texas. 1956

#5911, Ground-Water Geology of Bexar County, Texas. 1959

Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas Aug.1968 - Jan.1975. 1976
TD 224 T4 R421 Geology Library

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-
GB 1025 T4 E26 Geology Library

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
GB 1199.3 T4 S382 1993 Geology Library

Discrete-State Compartment Model of a Limestone Groundwater Reservoir - the Edwards Aquifer near San Antonio, Texas. 1983
GB 1199.3 T4 M334 1983 Geology Library

Drilling, Construction, and Testing of Monitor Wells for the Edwards Aquifer Bad Water Line Experiment. 1986
GB 1025 T4 D756 1986 Geology Library

Economic and Hydrologic Implications of Proposed Edwards Aquifer Management Plans. 1993 Texas Water Resources Institute (Tx A&M) TR-158
GB 1199.3 T4 E266 1993 Geology Library

Edwards Aquifer Hydrogeologic Status Report for 1992. 1993 Edwards Underground Water District Report 93-05
GB 1199.3 T4 B3 1993 Geology Library

The Edwards Aquifer: Perspectives for Local and Regional Action. 1987
GB 1199.3 T4 E3732 1987 Geology Library

Edwards Aquifer Storage Assessment, Kinney County to Hays County, Texas. 1993 Hovorka, S., et al. Bureau of Economic Geology / Edwards Underground Aquifer District
GB 1199.3 T4 E374 1993 (Text + Maps) Geology Library

Edwards (Balcones Fault Zone) Aquifer Test Well Drilling Investigation. 1975
TD 224 T4 S545 1975 Geology Library

Effects of Drought in Central and South Texas. 1963 USGS Professional Paper 372C
QE 75 P9 no.372C Geology Library

Environmental Tritium in the Edwards Aquifer Central Texas 1963-71. 1975 USGS Open File Report 74-362
GB 1025 T4 P446 Geology Library

Evapotranspiration: a method of disposing of septic tank effluent. 1977 Edwards Underground Water District
TD 765 R844 Geology Library

A Finite-Element Model for Simulation of Two-Dimensional Steady-State Ground-Water Flow in Confined Aquifers. 1990 USGS Open-File Report 90-187
GB 1197.7 K86 1990 Geology Library

Geochemical and Isotopic Analyses of Waters Associated with the Edwards Limestone Aquifer, Central Texas. 1976
TD 224 T4 P468 Geology Library

Geology and Ground-Water Resources of Comal County, Texas. 1952 USGS Water Supply Paper 1138
TC 801 U2 no.1138 Geology Library

Geology and Ground-Water Resources of Comal County, Texas. 1947 Texas Board of Water Engineers
GB 1025 T4 G449 Geology Library

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
GB 1199.3 T4 K74 1987 Geology Library

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
TD 224 T4 P384 1987 Geology Library

Hydrologic and Geologic Data for the Edwards Aquifer Recharge Zone Near Georgetown, Williamson County, Texas, 1986-87. 1987 USGS Open File Report 87-691
GB 1199.3 T4 D67 1987

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
GB 1199.3 T4 H93 1985 Geology Library

Hydrologic Investigations of the Edwards and Associated Limestones in the San Antonio Area, Texas Progress Report, 1970-71. 1972
GB 1199.3 T4 M16 Geology Library

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
GB 1199.3 T4 H92 Geology Library

Hydrogeology of the Edwards Aquifer in the San Antonio Area, Texas. 1984 US Geological Survey Open File Report 83-537
GB 1199.3 T4 M236 1986 (+ plates) Geology Library

Hydrogeology of the Northern Segment of the Edwards Aquifer, Austin Region. 1990. Bureau of Economic Geology Report of Investigations 192
QE 167 T42 no.192

Identification and Tabulation of Geological Contacts in the Edwards Aquifer, San Antonio Area, Texas. 1985. Texas Dept. of Water Resources LP-199 (also pub. as USGS Open File Rpt. 84-75)
GB 1199.3 T4 S63 1985 Geology Library

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
GB 1197.83 T4 P68 1992 Geology Library

Lineaments and the Edwards Aquifer -- Barton Springs Segment, Travis and Hays Counties, Texas. 1989. Edwards Aquifer Research and Data Center RI-89
GB 1119.3 T4 W6 1989 Geology Library

Permeability Structure of the Edwards Aquifer, South Texas -- Implications for Aquifer Management. 1998. Bureau of Economic Geology Report of Investigations no.250
QE 167 T42 no.250 Geology Library

Preliminary Report on Groundwater Tracing Studies Within the Barton and Williamson Creek Watersheds, Barton Springs / Edwards Aquifer. 1998. Barton Springs/Edwards Aquifer Conservation District
GB 1025 T4 H384 1998 Geology Library

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
GB 1199.3 T4 M17 1976 Geology Library

Quantity of Low-Flow in Barton Creek, Texas July 6-8 and October 1-3, 1970. 1974. USGS Open File Report
TD 224 T4 B3244 1974 Geology Library

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
TD 224 T4 L362 1985 Geology Library

Regional Specific Yield of the Edwards and Associated Limestones in the San Antonio,Texas Area. 1973 TD 224 T4 M336 Geology Library

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
GB 1199.3 T4 P836 1975 Geology Library

Report, Texas Water Development Board
TD 224 T4 A333 Geology Library

See especially the following:

#51, Reconnaissance Investigation of the Ground-Water Resources of the Colorado River Basin, Texas. 1967

#234, Geohydrology of Comal, San Marcos, and Hueco Springs. 1979

#237, Records of Wells, Chemical Analyses, and Water Levels of Selected Edwards Wells, Bexar County, Texas. 1979

#238, Ground-Water Availability in Texas, Estimates & Projections Through 2030. 1979

#239, Ground-Water Resources and Model Applications for the Edwards (Balcones Fault Zone) Aquifer in the San Antonio Region. 1979

#276, Occurrence, Availability, and Quality of Ground Water in Travis County, Texas. 1983

#296, Carbonate Geology and Hydrology of the Edwards Aquifer in the San Antonio Area, Texas. 1986

#325, Test Well Drilling Investigation to Delineate the Downdip Limits of Usable Quality Ground Water in the Edwards Aquifer in the Austin Region, Texas. 1990

#326, Evaluation of Water Resources in Bell, Burnet, Travis, Williamson and Parts of Adjacent Counties, Texas. 1991

#339, Evaluation of the Ground-Water Resources of the Paleozoic and Cretaceous Aquifers in the Hill Country of Central Texas 1992

#340, Model Refinement and Applications for the Edwards (Balcones Fault Zone) Aquifer in the San Antonio Region, Texas. 1992

#350, Changes in Groundwater Conditions in the Edwards and Trinity Aquifers, 1987-1997, for Portions of Bastrop, Bell, Burnet, Lee, Milam, Travis, and Williamson Counties, Texas. 1999.

#358, Groundwater Availability Model: Northern Segment of the Edwards Aquifer, Texas. 2003.

#360, Aquifers of the Edwards Plateau. 2004.

#373, Groundwater Availability Model for the Edwards-Trinity (Plateau) and Pecos Valley Aquifers of Texas. 2009.

San Antonio Regional Water Resource Study Report. 1986 Produced for the Edwards Underground Water District, San Antonio
TD 225 S37 S36 1986 v.1-3 Geology Library

South Medina County Observation Well Project. 1993 Edwards Underground Water District Report 93-11
GB 1199.3 T4 S697 1993 Geology Library

Springflow Augmentation of Comal Springs and San Marcos Springs, Texas: Phase 1 - Feasibility Study. 1995 CRWR Technical Report 247
TD 201 T3 T492 no. 247 Geology Library

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
GB 1025 T4 W444 1985 Geology Library

Suggested Design and Construction of Edwards Aquifer Wells. 1987
TD 224 T4 S9441 1987 Geology Library

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
GB 1025 T4 L363 1989 Geology Library

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
G 4034 G45 C34 1992 R448 Geology Library

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
GB 1199.3 T4 S38 1992 Geology Library

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
GB 1199.3 T4 M33 1980

Water-Resources Investigations Report: US Geological Survey.
GB 701 W375 Geology Library

See Especially the Following:

#83-4168. Streamflow losses along the Balcones Fault Zone, Nueces River Basin, Texas. 1983

#84-4124. Effects of Storm-Water Runoff on Water Quality of the Edwards Aquifer near Austin, Texas. 1984

#85-4259. Hydrologic Sections of the Edwards Aquifer and Its Confining Units in the San Antonio Area, Texas. 1986

#85-4299. Simulation of the Flow System of Barton Springs and Associated Edwards Aquifer in the Austin Area, Texas. 1985

#86-4032. Potential for Updip Movement of Salinewater in the Edwards Aquifer, San Antonio, Texas. 1986

#86-4036. Hydrology and Water Quality of the Edwards Aquifer Associated with Barton Springs in the Austin Area, Texas. 1986

#86-4069. The Effects of Urbanization on Floods in the Austin Metropolitan Area, Texas. 1986

#86-4343. Planning Report for the Edwards-Trinity Regional Aquifer-System Analysis in Central Texas, Southeast Oklahoma, and Southwest Arkansas. 1986

#87-4116. Relation of Water Chemistry of the Edwards Aquifer to Hydrogeology and Land Use, San Antonio Region, Texas. 1987

#87-4248. Hydrogeology and Predevelopment Flow in the Texas Gulf Coast Aquifer Systems. 1988

#87-4266. Comparative Petrology of Cores from Two Test Wells in the Eastern Part of the Edwards Aquifer, South-Central Texas. 1991

#88-4190. Reassessment of the Georgetown Limestone as a Hydrogeologic Unit of the Edwards Aquifer, Georgetown Area, Texas. 1988

#88-4218. Precipitation, Streamflow, and Base Flow in West-Central Texas December 1974 through March 1977. 1989

#89-4208. Potentiometric Surface of the Edwards - Trinity Aquifer System and Contiguous Hydraulically Connected Units, West-Central Texas, Winter 1974-75. 1990

#91-4021. Withdrawals from the Edwards - Trinity Aquifer System and Contiguous Hydraulically Connected Units, West-Central, December 1974 Through March 1977. 1991

#91-4071. Configuration of the Base of the Edwards-Trinity Aquifer System and Hydrogeology of the Underlying Pre-Cretaceous Rocks, West-Central Texas. 1992

#92-4055. Historical Potentiometric Surface of the Edwards - Trinity Aquifer System and Contiguous Hydraulically Connected Units, West-Central Texas. 1993

#92-4117. Evaluation of the Use of Remote-Sensing Data to Identify Crop Types and Estimate Irrigated Acreage, Uvalde and Medina Counties, Texas, 1989. 1992

#92-4125. Historical Saturated Thickness of the Edwards - Trinity Aquifer System and Selected Contiguous Hydraulically Connected Units, West-Central Texas. 1993

#94-4117. Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer Outcrop, Comal County, Texas. 1994

#94-4039. Geologic History and Hydrogeologic Setting of the Edwards-Trinity Aquifer System, West-Central Texas. 1994

#95-4030. Geologic framework and Hydrogeologic Characteristics of the Edwards Aquifer Recharge Zone, Bexar County, Texas. 1995

#95-4186. Geology and Hydrology of the Edwards Aquifer in the San Antonio area, Texas. 1995

#95-4265. Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer Outcrop, Hays County, Texas. 1995

#96-4046. Hydrogeologic Factors That Affect the Flowpath of water in selected zones of the Edwards Aquifer, San Antonio Region, Texas. 1996

#96-4306. Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer Outcrop (Barton Springs Segment), Northeastern Hays and Southwestern Travis Counties, Texas. 1996

#97-4094. Geologic Framework of the Edwards Aquifer and Upper Confining Unit, and Hydrogeologic Characteristics of the Edwards Aquifer, South-Central Uvalde County, Texas. 1997

#97-4133. Hydrogeologic Framework and Geochemistry of the Edwards Aquifer Saline-Water Zone, South-Central Texas. 1997

#97-4290. Geologic Framework and Hydrogeologic Characteristics of the Outcrops of the Edwards and Trinity Aquifers, Medina Lake Area, Texas. 1997

#98-4099. Extreme Precipitation Depths for Texas, Excluding the Trans-Pecos Region. 1998

#00-4149. Vulnerability of Ground Water to Contamination, Edwards Aquifer Recharge Zone, Bexar County, 1998. Allan K. Clark. 2000

#02-4241. Simulation of Runoff and Recharge and Estimation of Constituent Loads in Runoff, Edwards Aquifer Recharge Zone (Outcrop) and Catchment Area, Bexar County, Texas, 1997-2000. 2002

#03-4010. Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer, Uvalde County, Texas. 2003

Scientific Investigations Report: US Geological Survey.
GB 701 W376 GEOLOGY LIBRARY

See Especially the Following:

#2004-5201. Quality of Water in the Trinity and Edwards Aquifers, South-Central Texas, 1996-98.

#2004-5209. Water-Budget Analysis of Medina and Diversion Lakes and the Medina/Diversion Lake System, With Estimated Recharge to Edwards Aquifer, San Antonio Area, Texas. 2004

#2006-5299. Recent (2003-05) Water Quality of Barton Springs, Austin, Texas, With Emphasis on Factors Affecting Variability.

#2007-5002. Relation of Specific Conductance in Ground Water to Intersection of Flow Paths by Wells, and Associated Major Ion and Nitrate Geochemistry, Barton Springs Segment of the Edwards Aquifer, Austin, Texas, 1978-2003.

#2007-5244. Geophysical Delineation of the Freshwater/Saline-Water Transition Zone in the Barton Springs Segment of the Edwards Aquifer, Travis and Hays Counties, Texas, September 2006.

#2007-5285 . Geologic, hydrologic, and geochemical identification of flow paths in the Edwards aquifer, northeastern Bexar and southern Comal Counties, Texas.



map of the Edwards Aquifer

Map from The Balcones Escarpment, P. Abbott & C.M. Woodruff, eds. 1986.

(used with permission)

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