Displaying History Related Reports

Title: Edwards Aquifer Authority Hydrologic Data Report for 2006
Description:
Annual report for 2006 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: 2011 Hydrologic Data Fact Sheet for Precipitation, Groundwater Levels and Drought Conditions
Description:
Summary for 2011 on precipitation, groundwater levels, and drought in the Edwards Aquifer San Antonio Region
Details View Download

Title: 2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
Description:
2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
Details View Download

Title: Edwards Aquifer Authority Hydrogeologic Data Report for 1999
Description:
Annual report for 1999 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large‐format versions of the plates for this report are available at: http://www.edwardsaquifer.org/documents/2000_Esquil in‐etal_1999HydrologicData‐Plates.pdf.
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 2000
Description:
Annual report for 2000 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrogeologic Report for 2001
Description:
Annual report for 2001 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrogeologic Report for 2002
Description:
Annual report for 2002 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2003
Description:
Annual report for 2003 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2004
Description:
Annual report for 2004 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2005
Description:
Annual report for 2005 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2011
Description:
Annual report for 2011 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: 1983-84 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1983-84, with 1934-84 Summary
Description:
Annual report for 1983-84 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: 1985 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1985, with 1934-85 Summary
Description:
Annual report for 1985 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large‐format versions of the plates for this report are available at: http://www.edwardsaquifer.org/documents/1987_Ozuna-etal_1985HydrologicData-Plates.pdf.
Details View Download

Title: 1986 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1986, with 1934-86 Summary
Description:
Annual report for 1986 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large-format versions of the plates for this report are available at: http://www.edwardsaquifer.org/documents/ 1988_Ozuna-etal_1986HydrologicData-Plates.pdf
Details View Download

Title: 1987 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1987, with 1934-87 Summary
Description:
Annual report for 1987 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large-format versions of the plates for this report are available Here
Details View Download

Title: 1988 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1988, with 1934-88 Summary
Description:
Annual report for 1988 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large-format versions of the plates for this report are available at:http://www.edwardsaquifer.org/documents/1989_Nalley_1988HydrologicData.pdf.
Details View Download

Title: 1989 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1989, with 1934-89 Summary
Description:
Annual report for 1989 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: 1990 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1990, with 1934-90 Summary
Description:
Annual report for 1990 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: 1991 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1991, with 1934-91 Summary
Description:
Annual report for 1991 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Hydrogeologic Status Report for 1992
Description:
Annual report for 1992 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1995
Description:
Annual report for 1995 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1997
Description:
Annual report for 1997 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1998
Description:
Annual report for 1998 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: City of San Marcos Surface Water Development Plan / A Report To The Edwards Underground Water District September 27, 1988
Description:
Plan by the City of San Marcos, TX to develop surface drinking water options with the City of New Braunfels. Note: this document is included for its historical value and may have been replaced by more recent plans.
Details View Download

Title: New Braunfels-San Marcos Surface Water Development
Description:
Discussion of developing surface water as a supplementary water source for New Braunfels and San Marcos Note: This document is included for its historical value.
Details View Download

Title: Pilot Recharge Models of the Nueces and Blanco River Basins
Description:
Pilot study to develop HSPF improvement of the MODFLOW study for recharge in the Blanco and Nueces River Basins
Details View Download

Title: San Antonio and Bexar County, Texas Report on Reclamation and Re-Use of Municipal Wastewater
Description:
Feasibility study on possible uses of reclaimed wastewater in Bexar and Medina Counties and impact on withdrawal from and recharge to the Edwards Aquifer Note: This report is included for its historical value and may have been superseded by more recent studies.
Details View Download

Title: San Antonio Regional Water Resource Study-Summary
Description:
Non-technical discussion of various alternatives for ensuring water supply for the greater San Antonio region through 2040, a 60-year horizon. Note: This report is included for its historical value and may have been superseded by more recent studies.
Details View Download

Title: The Edwards Aquifer Extremely Productive, but...
Description:
Semi-technical description of the Edwards aquifer and considerations for its use and preservation for the general public and policy-makers
Details View Download

Title: Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas [1959-1962]
Description:
Chemical analyses of water from 129 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment,some data going back to 1959. Note: This report is included for its historical value; results may have been superseded by more recent studies. Last page of file is full-size plate.
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, 1955-62, San Antonio Area, Texas
Description:
First of annual reports on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, 1960-62, San Antonio Area, Texas
Description:
Annual report for 1960-62 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1963
Description:
Chemical analyses of water from 100 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1963. Note: This report is included for its historical value; results may have been superseded by more recent studies.
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1963
Description:
Annual report for 1963 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Discharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1963
Description:
Annual report for 1963 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1964
Description:
Chemical analyses of water from 80 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1964. Note: This report is included for its historical value; results may have been superseded by more recent studies.
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1964
Description:
Annual report for 1964 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1964
Description:
Report for 1964 on estimated recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1965
Description:
Chemical analyses of water from 72 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1965. Note: This report is included for its historical value; results may have been superseded by more recent studies.
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1965
Description:
Annual report for 1965 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1965
Description:
Annual report for 1965 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1966
Description:
Chemical analyses of water from 37 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1966. Note: This report is included for its historical value; results may have been superseded by more recent studies.
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1966
Description:
Annual report for 1966 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1966
Description:
Annual report for 1966 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1967
Description:
Annual report for 1967 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1967
Description:
Annual report for 1967 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1968
Description:
Annual report for 1968 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1968
Description:
Annual report for 1968 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1969
Description:
Annual report for 1969 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1969
Description:
Annual report for 1969 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1970
Description:
Annual report for 1970 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1970
Description:
Annual report for 1970 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1971
Description:
Annual report for 1971 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1971
Description:
Annual report for 1971 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1972
Description:
Annual report for 1972 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1973
Description:
Annual report for 1973 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1972-73
Description:
Annual report for 1972-73 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1974
Description:
Annual report for 1974 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1975
Description:
Annual report for 1975 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1976
Description:
Annual report for 1976 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Ground-Water Recharge and Discharge for the Edwards Aquifer in the San Antonio Area, Texas, 1934-77
Description:
Annual report for 1977 on recharge and discharge from the Edwards Aquifer issued by the Edwards Underground Water District
Details View Download

Title: Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-78
Description:
Title page: Records of Ground-water Recharge and Discharge, 1934-78; Water Levels, 1975-78; and Chemical Quality of Water, 1977-78, for the Edwards Aquifer in the San Antonio Area, Texas. Annual hydrologic report issued by the Edwards Underground Water District.
Details View Download

Title: Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-79.
Description:
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1934-79. Annual hydrologic report issued by the Edwards Underground Water District.
Details View Download

Title: Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-80.
Description:
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1934-80. Annual hydrologic report issued by the Edwards Underground Water District.
Details View Download

Title: Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-81.
Description:
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1981, with 1934-81 Summary. Annual hydrologic report issued by the Edwards Underground Water District.
Details View Download

Title: Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-82.
Description:
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1982, with 1934-82 Summary. Annual hydrologic report issued by the Edwards Underground Water District.
Details View Download

Title: Medina Lake Hydrology Study
Description:
Hydrologic and hydraulic analyses for the Medina Lake and Medina Diversion Lake reservoir system
Details View Download

Title: Edwards Underground Water District Water Conservation Benchmark Study
Description:
Study to measure consumers' awareness and actions for water conservation. Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 1 Main Report
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies. Volume 1 of survey by the US Army Corps of Engineers and the Edwards Underground Water District, emphasizing possible locations for reservoirs and containment systems.
Details View Download

Title: Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 2 Appendices I, II, IV, VI
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies. Volume 2 (Appendices I, II, IV, VI ) of survey by the US Army Corps of Engineers and the Edwards Underground Water District, emphasizing possible locations for reservoirs and containment systems.
Details View Download

Title: Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 3 Appendix III Geology Appendix V Economic Base Study Appendix VI Recreation and Wildlife
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies. Volume 3 (Appendix III Geology Appendix V Economic Base Study Appendix VI Recreation and Wildlife) of survey by the US Army Corps of Engineers and the Edwards Underground Water District, emphasizing possible locations for reservoirs and containment systems.
Details View Download

Title: Regional Water Resources Plan for the Edwards Aquifer
Description:
Insight into the joint planning process between the City of San Antonio and the Edwards Underground Water District for preserving quality and quantity of water in the Edwards Aquifer. Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: Report on the Edwards Aquifer San Antonio Region, Texas
Description:
Review of geology, hydrogeology, recharge and pumpage of the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: Regional Specific Yield of the Edwards and Associated Limestones in the San Antonio, Texas Area
Description:
Regional specific yield of the San Antonio Segment of the Edwards Aquifer for 1958-1966
Details View Download

Title: Exploring Drought in the San Antonio Area Between 1700 and 1979
Description:
Using tree rings to analyze droughts for the San Antonio area between 1700 and 1979
Details View Download

Title: Evaluation of Stormwater Control Techniques and Programs
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: Records of Wells and Springs, San Antonio Area, Texas
Description:
Records of wells and springs in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment, 1956-1968
Details View Download

Title: Statistical Summary of Water-Quality Data Collected from Selected Wells and Springs in the Edwards Aquifer Near San Antonio, Texas
Description:
Compilation and descriptive statistics of water contaminants monitored in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment, from 1973-1982
Details View Download

Title: Preliminary Draft of Watershed Work Plan for Watershed Protection and Flood Prevention Seco Creek Watershed Medina, Bandera and Uvalde Counties, Texas
Description:
Preliminary assessment for methods and costs of flood prevention in the Seco Creek Watershed Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: History of Water in the San Antonio River Valley
Description:
Colorful narrative history of the San Antonio River basin and the role of water in the location and development of San Antonio
Details View Download

Title: Report of the Technical Data Review Panel on the Water Resources of the South Central Texas Region
Description:
Assessment and gap analysis of the Edwards Underground Water District Technical Data Review Panel on historical data for water use, water quality, and water supply Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: New Braunfels-San Marcos Crystal Clear Surface Water Development
Description:
Request for funding from the Edwards Underground Water District for a surface water source and treatment plant for New Braunfels, Crystal Clear and San Marcos, TX. Note: This document is included for its historical value.
Details View Download

Title: North Bexar County Water Resources Study for the Edwards Underground Water District-Executive Summary and Volume I Ground Water
Description:
Study of the Upper, Middle, and Lower Trinity aquifers and nearby surface waters as potential sources of fresh water for Northern Bexar County in the future. Notes: This report is included for its historical value and may have been replaced by more recent studies. Page-size version of the plate is at the end of the report. Large-format version of the original plate is 216 MB. Available upon request at info@edwardsaquifer.org
Details View Download

Title: Regional Water Supply Planning Study Phase III-Recharge Enhancement-Nueces River Basin
Description:
Analysis of nineteen proposed recharge structures for the Nueces River Basin with respect to cost and environmental concerns. Note: This document was included for its historical value but may have been superseded by more recent studies.
Details View Download

Title: San Antonio & Guadalupe River Basins Study (Report to US Congress)
Description:
Letter to US Congress from directors of various water entities in Central Texas, concerning historical and future use of water and need for Federal funding to ensure adequate supplies. Notes: This report is included for its historical value and may have been replaced by more recent studies. Page-size and large-format plates are at the end of the document.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 1
Description:
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 1 contains the Executive Summary, Introduction, and Population, Water Demand and Water Supply Projections for 1990-2050. Note: This study is included for historical value but has been replaced by more recent plans.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 2
Description:
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 2 contains Water Supply Alternatives and Evaluations and Appendices A-D. Note: This study is included for historical value but has been replaced by more recent plans.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 3
Description:
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 3 contains the continuation of Water Supply Alternatives and Evaluations and Appendices E-I. Note: This study is included for historical value but has been replaced by more recent plans.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 4
Description:
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 4 contains the continuation of Water Supply Alternatives and Evaluations and Appendices J and K. Note: This study is included for historical value but has been replaced by more recent plans.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Technical Memorandum Public Participation Stakeholder Involvement Process Issues Document
Description:
Discussion of process for public and stakeholder involvement for the 1998 Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Trans-Texas Water Issues Survey Report West Central Study Area
Description:
Survey Report of the West Central Texas water plan for the Trans-Texas Water Program. Note: This study is included for historical value but has been replaced by more recent plans.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Summary Report of Water Supply Alternatives
Description:
Discussion of water supply alternatives for the 1998 Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Guadalupe-San Antonio River Basin Model Modifications & Enhancements
Description:
Modifications and enhancements for the Guadalupe-San Antonio River Basin Model (GSA Model) for the Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Guadalupe-San Antonio River Basin Environmental Criteria Refinement
Description:
Modeling, summary of biological studies, and sensitivity analyses to support refinement of environmental criteria for the Trans-Texas Water Program West Central Study Area Phase II Guadalupe-San Antonio River Basin Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Updated Evaluation of Potential Reservoirs in the Guadalupe River Basin
Description:
Phase II of the West Central Texas water plan for the Trans-Texas Water Program, containing updated evaluations of potential reservoirs in the Guadalupe River Basin. Note: This report is included for its historical value but has been replaced by more recent studies.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Population, Water Demand and Water Supply Projections
Description:
Projections for population and water demand from 1990-2050 for the 1998 Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its historical value but has been replaced by more recent studies.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Comments
Description:
Comments from various government and business stakeholders on different sections of Phase 2 of the 1998 Trans-Texas Water Program West Central Study Area Note: This document was included for historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Trans-Texas Water Program West Central Study Area Phase II Edwards Aquifer Recharge Analyses
Description:
Compilation of four studies: Report 1 Guadalupe - San Antonio River Basin Recharge Enhancement Study Feasibility Assessment Report 2 Conceptual Evaluation of Springflow Recirculation Report 3 Modification of Principal Spillways at Existing Flood Control Projects for Recharge Enhancement Report 4 Edwards Aquifer Recharge Update Note: This document was included for historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Edwards Aquifer Recharge Enhancement Project Phase IVA Nueces River Basin Final Report
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: San Antonio Regional Water Resource Study
Description:
Analysis of regional water needs from 1980-2040. Note: This report is included for its historical value and may have been replaced by more recent studies.
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1993
Description:
Annual report for 1993 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Geology and Water Quality at Selected Locations in the San Antonio Area Texas, Progress Report, 1969
Description:
Surface geology and water quality monitoring in the San Antonio region in relation to development and most likely sources of pollution. Note: Page-size and large-format plate are at the end of the report.
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1994
Description:
Annual report for 1994 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Groundwater Management Plan 1998-2008
Description:
Groundwater management plan for the Edwards Aquifer Authority for 1998-2008 Note: This report is included for its historical value but has been replaced by a more recent study.
Details View Download

Title: Summary Information Regarding Historical Edwards Aquifer Recharge, Aquifer Modeling and Recharge Enhancement Projects
Description:
Compilation of historical reports by HDR Engineering on recharge and modeling of the Edwards Aquifer Balcones Fault Zone San Antonio Segment
Details View Download

Title: South Central Texas Regional Water Planning Area 2006 Regional Water Plan Volume I Executive Summary and Regional Water Plan
Description:
Volume 1 of the 2006 South Central Texas Regional Water Plan. Note: This report is included for its historical value but has been replaced by the 2011 South Central Texas Regional Water Plan, and ultimately by the Texas Water Plan. Note changes in cover letter.
Details View Download

Title: South Central Texas Regional Water Planning Area 2011 Regional Water Plan Volume I Executive Summary and Regional Water Plan
Description:
Volume 1 of the 2011 South Central Texas Regional Water Plan. Note: This report is included for its historical value but has been replaced by the Texas Water Plan.
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2007
Description:
Annual report for 2007 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2008
Description:
Annual report for 2008 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2009
Description:
Annual report for 2009 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2010
Description:
Annual report for 2010 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume III Technical Evaluations of Water Supply Options - Part 2
Description:
Part 2 of Volume III of three volumes of the 2001 South Central Texas Regional Water Plan. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
Details View Download

Title: South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume III Technical Evaluations of Water Supply Options - Part 1
Description:
Part 1 of Volume III of three volumes of the 2001 South Central Texas Regional Water Plan. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
Details View Download

Title: HSPF Recharge Models for the San Antonio Segment of the Balcones Fault Zone of the Edwards Aquifer – Part 1
Description:
Development of complete contributing and recharge zones for the HSPF enhancement to MODFLOW from historical data on all nine drainage basins of the Edwards Aquifer Balcones Fault Zone San Antonio Segment
Details View Download

Title: HSPF Recharge Models for the San Antonio Segment of the Balcones Fault Zone of the Edwards Aquifer – Part 2
Description:
Development of complete contributing and recharge zones for the HSPF enhancement to MODFLOW from historical data on all nine drainage basins of the Edwards Aquifer Balcones Fault Zone San Antonio Segment - Part 2
Details View Download

Title: HSPF Recharge Models for the San Antonio Segment of the Balcones Fault Zone of the Edwards Aquifer – Part 3
Description:
Development of complete contributing and recharge zones for the HSPF enhancement to MODFLOW from historical data on all nine drainage basins of the Edwards Aquifer Balcones Fault Zone San Antonio Segment - Part 3
Details View Download

Title: South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume II Technical Evaluations of Alternative Regional Water Plans
Description:
Volume II of three volumes of the 2001 South Central Texas Regional Water Plan. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
Details View Download

Title: Regional Water Supply Planning Study - Phase I Nueces River Basin Volume I - Executive Summary
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies. Executive Summary of 1991 water supply plan for the Nueces River Basin emphasizing construction of recharge structures (dams and reservoirs)
Details View Download

Title: Regional Water Supply Planning Study - Phase I Nueces River Basin Volume II - Technical Report
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies. Technical study for 1991 water supply plan for the Nueces River Basin emphasizing construction of recharge structures (dams and reservoirs)
Details View Download

Title: Regional Water Supply Planning Study - Phase I Nueces River Basin Volume III - Appendices
Description:
Note: This report is included for its historical value and may have been replaced by more recent studies. Appendices for 1991 water supply plan for the Nueces River Basin emphasizing construction of recharge structures (dams and reservoirs)
Details View Download

Title: Trans-Texas Water Program West Central Study Area Public Participation / Stakeholder Involvement Plan
Description:
Note: This report is included because of its possible historical value. It has been replaced by more recent plans. Plan for involving the public and stakeholders in the planning process for the Trans-Texas Water Program West Central Study Area
Details View Download

Title: Trans-Texas Water Program West Central Study Area Integrated Resource Planning Committee Final Criteria Report Public Participation / Stakeholder Involvement Process
Description:
Note: This report is included because of its possible historical value. It has been replaced by more recent plans. Input of public and stakeholders in the Trans-Texas Water Program West Central Study Area.
Details View Download

Title: Executive Summary of Water Availability Study for the Guadalupe and San Antonio River Basins
Description:
Note: This paper is included for its historical value but has been replaced by more recent studies. Summary of studies on proposed reservoirs on the Guadalupe and San Antonio Rivers.
Details View Download

Title: South Central Texas Region 2000 Water Needs Assessment
Description:
Note: This report is included for historical value but has been replaced by the Texas Water Plan. Summaries of various sources of water, their costs, and projected needs of each county and jurisdiction by use.
Details View Download

Title: South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume I Executive Summary and Regional Water Plan-Part 1
Description:
Executive Summary and Water Plan for the 2001 South Central Texas Regional Water Plan – Part 1. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
Details View Download

Title: South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume I Executive Summary and Regional Water Plan-Part 2
Description:
Executive Summary and Water Plan for the 2001 South Central Texas Regional Water Plan – Part 2. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
Details View Download

Title: 1988 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1988, with 1934-88 Summary - Plates
Description:
Plates from 1988 annual report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Original size plates - need large-format printer.
Details View Download

Title: 1989 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1989, with 1934-89 Summary - Plates
Description:
Plates from 1989 annual report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Original size plates - need large-format printer.
Details View Download

Title: Edwards Aquifer Authority Hydrogeologic Data Report for 1999 - Plates
Description:
High-resolution fulll-size plates from "Edwards Aquifer Authority Hydrogeologic Data Report for 1999". Note: large-format printer required.
Details View Download

Title: 1985 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1985, with 1934-85 Summary - Plates
Description:
Full-size plates for annual report for 1985 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Requires large-format printer.
Details View Download

Title: 1986 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1986, with 1934-86 Summary - Plates
Description:
Plates from annual report for 1986 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Requires large-format printer.
Details View Download

Title: 1987 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1987, with 1934-87 Summary - Plates
Description:
Plates from annual report for 1987 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Requires large-format printer.
Details View Download

Title: Edwards Aquifer Bibliography through 2010
Description:
Bibliography of the Edwards Aquifer through 2010
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2012 / Report No. 13-01
Description:
Annual report for 2012 on recharge, discharge, precipitation, water levels and water quality in the Edwards Aquifer Balcones Fault Zone San Antonio Segment
Details View Download

Title: Threatened and endangered plant and animal species of the Edwards Aquifer
Description:
Description, distribution, habitat, feeding and breeding requirements of seven species of the Edwards Aquifer listed by the United States Fish & Wildlife Service and/or Texas Parks and Wildlife Department as Threatened or Endangered as of 1995. Note: this document is included for its historical value and may have been superseded by more recent classifications and publications.
Details View Download

Title: The Edwards Underground Reservoir and the Edwards Underground Water District: Uvalde, Medina, Bexar, Comal and Hays Counties
Description:
General description of the Edwards Aquifer and the Edwards Underground Water District. Note: No cover page. This document is included for its historical value and has been replaced by more recent ones.
Details View Download

Title: 1990 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1990, with 1934-90 Summary-Plates
Description:
Large-format plates for the 1990 Hydrologic Data Report - see companion document.
Details View Download

Title: 1991 Hydrologic Data Report - Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1991, with 1934-91 Summary-Plates
Description:
Large-format plates for the 1991 Hydrologic Data Report. See companion document.
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1996
Description:
Annual report for 1996 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1996-Plates
Description:
Large-format plates for Edwards Aquifer Hydrogeologic Report for 1996. See companion document.
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1997-Plates
Description:
Large-format plates for Edwards Aquifer Hydrogeologic Report for 1997. See companion document.
Details View Download

Title: Edwards Aquifer Hydrogeologic Report for 1997
Description:
Annual report for 1997 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Underground Water District
Description:
General description of the Edwards Aquifer, and the mission and functions of the Edwards Underground Water District. Note: this document has been included for historical value.
Details View Download

Title: The Edwards Underground Reservoir and the Edwards Underground Water District
Description:
General description of the Edwards Aquifer and current concerns and acts of regulatory agencies in 1975. This document is included for its historical value and information may no longer be current.
Details View Download

Title: The Edwards Underground Water District and Edwards Underground Reservoir
Description:
Description of the Edwards Underground Water District and Reservoir. Note: This document is included for its historical value. Note: There is another document with the same title but different content.
Details View Download

Title: Strategic Plan 2002-2006
Description:
Strategic Plan for the Authority in the period 2002-2006, including research plans. Note: This document was included for its historical value and has been superseded by more recent studies.
Details View Download

Title: Edwards Aquifer Authority Technical Documents Project Phase I
Description:
Documentation of Phase I of the Edwards Aquifer Authority Technical Documents Project from 2011-2012
Details View Download

Title: Edwards Underground Water District: Created to Conserve, Protect and Preserve the Edwards Aquifer
Description:
History and overview of the Edwards Aquifer and the Edwards Underground Water District
Details View Download

Title: The Water Source
Description:
Features and summaries of news and scientific studies published by the Edwards Underground Water District from 1989-1996
Details View Download

Title: Edwards Aquifer Authority Technical Documents Project Phase II
Description:
Documentation of Phase II of the Edwards Aquifer Authority Technical Documents Project from 2012-2014
Details View Download

Title: Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2013
Description:
Appendix C of annual report for 2013 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2013
Description:
Annual report for 2013 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2014
Description:
Annual report for 2014 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2015 - Groundwater
Description:
Annual report for 2015 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Edwards Aquifer Authority Hydrologic Data Report for 2015 - Precipitation
Description:
Annual report for 2015 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
Details View Download

Title: Re-Conceptualizing the Edwards Aquifer Authority Recharge Program: Staff Recommendations to Optimize and Protect the Edwards Aquifer
Description:
Recharge is defined in the EAA Act as: Increasing the supply of water to the aquifer by naturally occurring channels or artificial means. Based on this definition, the EAA recharge program previously consisted of four recharge dams initially sponsored by the EUWD and Medina County Commissioners Court until calendar year 2004, when participation in the regional Precipitation Enhancement Program (PEP) was added to the program.
Details View Download