| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1967 |
Description:
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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 1967. Note: This report is included for its historical value; results may have been superseded by more recent studies.
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| Title: |
Analysis of Water Quality Data for East Elm, West Elm and Lorence Creeks |
Description:
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Water quality in three small watersheds in the Edwards Aquifer Recharge Zone in relation to storm water runoff and urbanization, 1976 - 1980
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| Title: |
Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas August 1968-April 1972 |
Description:
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Surface and groundwater quality monitoring in the San Antonio area, 1968-1972
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| Title: |
Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas August 1968-January 1975 |
Description:
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Surface and groundwater quality monitoring in the San Antonio area, 1968-1976. Note: Page-size and full-size plates are at the end of the document.
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| Title: |
Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas February 1975-September 1977 |
Description:
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Surface and groundwater quality monitoring in the San Antonio area, 1975-1977. Note: Page-size and full-size plate are at the end of the document.
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| Title: |
Investigation of Volatile Organic Compounds in Groundwater Uvalde, Texas Edwards Underground Water District Field Activities from January 1984 through April 1988 |
Description:
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Survey of groundwater to determine the source of tetrachloroethylene (PCE) in the Edwards Aquifer near the Uvalde, TX airport
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| Title: |
Preliminary Feasibility Assessment of Edwards Aquifer Saline Water Treatment and Use |
Description:
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Feasibility of desalination from the Edwards Aquifer for public drinking water
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| Title: |
Water Quality at Selected Locations in the San Antonio Area, Texas: Progress Report, 1972 |
Description:
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Results of water quality testing at selected sites in the Edwards Aquifer from September 1969 – August 1971
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| Title: |
Groundwater Quality Monitoring Plan Edwards Aquifer Authority |
Description:
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Groundwater quality management plan for the Edwards Aquifer Authority 2003-2006
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| Title: |
Water quality of the Edwards Aquifer and streams recharging the aquifer in the San Antonio region, Texas (Map) |
Description:
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Low-resolution maps and discussion of water quality in the Edwards Aquifer Balcones Fault Zone San Antonio Segment. Note: file size for full-size maps is too large.
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| Title: |
San Antonio Regional Water Resource Study-Summary |
Description:
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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.
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| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas [1959-1962] |
Description:
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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.
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| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1963 |
Description:
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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.
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| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1964 |
Description:
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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.
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| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1965 |
Description:
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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.
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| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1966 |
Description:
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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.
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| Title: |
Statistical Summary of Water-Quality Data Collected from Selected Wells and Springs in the Edwards Aquifer Near San Antonio, Texas |
Description:
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Compilation and descriptive statistics of water contaminants monitored in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment, from 1973-1982
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| Title: |
Report of the Technical Data Review Panel on the Water Resources of the South Central Texas Region |
Description:
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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.
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| Title: |
Quantity and Quality of Low Flow in the Hondo Creek Basin, Texas March 27-28, 1968 |
Description:
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Low-flow study of Hondo Creek Basin, TX March 27-28, 1968
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| Title: |
Quality of Stormwater Runoff from an Urbanizing Watershed and a Rangeland Watershed in the Edwards Aquifer Recharge Zone, Bexar and Uvalde Counties, Texas, 1996-98 |
Description:
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Water quality study on stormwater runoff in an urbanizing vs rural area of the Edwards Aquifer Recharge Zone
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| Title: |
Staff report to Board of Directors of the Edwards Underground Water District: Urban Development on the Edwards Aquifer Recharge Zone |
Description:
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EUWD staff recommendations to the EUWD Board regarding potential cumulative impact of development over the Edwards Aquifer Recharge Zone
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| Title: |
Helotes Mulch Fire 2006 Tracing Groundwater Flow Using Natural Fluorescent Materials |
Description:
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With approximately 21 million gallons of water (LFCI, 2011) having been trained on the debris pile, the Helotes mulch fire effectively became a tracer test of huge proportions. It provided an opportunity for us to study the karst-related flow characteristics of the Edwards and Trinity aquifers. The fire-fighting water mobilized naturally fluorescing woody material and products of combustion that could be measured in groundwater using conventional fluorescence spectroscopy. Results revealed many of the characteristics of karst in both aquifers.
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| Title: |
Geology and Water Quality at Selected Locations in the San Antonio Area Texas, Progress Report, 1969 |
Description:
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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.
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| Title: |
Evapotranspiration – A Method of Disposing of Septic Tank Effluent |
Description:
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Feasibility study for evapotranspiration as an effective means of disposing septic tank effluent
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| Title: |
Universal Passive Samplers and the Aliasing Problem in Groundwater Sampling |
Description:
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AY-68-29-418 (Rio Seco) was selected for this study because it is within the Recharge Zone of the Edwards Aquifer surrounded by urban development, and water samples contain consistent PCE concentrations. AY-68-29-418 was sampled eight times to determine the correlation between PCE concentrations from universal passive samplers and water quality grab samples. EAA field staff exchanged the universal passive samplers every 48 hours, one universal passive sampler for one-hour exposure time, and two universal passive samplers for ten days exposure time. During each retrieval of universal passive samplers, EAA field staff also obtained a grab sample.
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2001 Annual Report |
Description:
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Annual report for 2001 on biota study of San Marcos Springs/River
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| Title: |
Water Quality/Variable Flow Study Summary of Critical Period Sampling #1 Comal River, New Braunfels, Texas August 23-31, 2000 |
Description:
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Sampling activities methodologies, sample locations, and raw data for critical period monitoring on the Comal River, New Braunfels, Texas August 23-31, 2000
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| Title: |
Water Quality/Variable Flow Study Summary of Critical Period Sampling #2 Comal River, New Braunfels, Texas September 7-15, 2000 |
Description:
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Sampling activities methodologies, sample locations, and raw data for critical period monitoring on the Comal River, New Braunfels, Texas September 7-15, 2000
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| Title: |
Water Quality/Variable Flow Study Summary of Fall Quarterly Sampling Comal River, New Braunfels, Texas November 9-17, 2000 |
Description:
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Sampling activities methodologies, sample locations, and raw data for critical period monitoring on the Comal River, New Braunfels, Texas September 7-15, 2000
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| Title: |
Water Quality/Variable Flow Study Summary of Fall Quarterly Sampling San Marcos River, San Marcos, Texas October 24-November 2, 2000 |
Description:
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Sampling activities methodologies, sample locations, and raw data for critical period monitoring in the San Marcos River October 24-November 2, 2000
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| Title: |
Stormwater Runoff for Selected Watersheds in the Edwards Aquifer Recharge Zone, Bexar County, Texas, 1996-98 |
Description:
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Comparison of water quality in stormwater runoff from five watersheds in the Edwards Aquifer Balcones Fault Zone San Antonio Segment Recharge Zone
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| Title: |
Assessment of Instream Flow and Habitat Requirements for Cagle’s Map Turtle (Graptemys caglei) |
Description:
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Field study on population and habitat of Cagle’s Map Turtle and factors affecting them, including instream flow requirements, water quality, and benthics
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2011 Annual Report |
Description:
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Annual report for 2011 on biota study of Comal Springs/River
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Details
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2011 Annual Report |
Description:
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Annual report for 2011 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2005 Annual Report |
Description:
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Annual report for 2005 on biota study of Comal Springs/River
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Details
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2005 Annual Report |
Description:
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Annual report for 2005 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2002 Annual Report |
Description:
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Annual report for 2002 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2002 Annual Report |
Description:
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Annual report for 2002 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2001 Annual Report |
Description:
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Annual report for 2001 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2004 Annual Report |
Description:
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Annual report for 2004 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2004 Annual Report |
Description:
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Annual report for 2004 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2006 Annual Report |
Description:
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Annual report for 2006 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2006 Annual Report |
Description:
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Annual report for 2006 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2008 Annual Report |
Description:
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Annual report for 2008 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2009 Annual Report |
Description:
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Annual report for 2009 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2010 Annual Report |
Description:
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Annual report for 2010 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2003 Annual Report |
Description:
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Annual report for 2003 on biota study of Comal Springs/River
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Details
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2007 Annual Report |
Description:
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Annual report for 2007 on biota study of Comal Springs/River
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Details
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2008 Annual Report |
Description:
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Annual report for 2008 on biota study of San Marcos Springs/River
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Details
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2007 Annual Report |
Description:
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Annual report for 2007 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2009 Annual Report |
Description:
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Annual report for 2009 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2003 Annual Report |
Description:
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Annual report for 2003 on biota study of San Marcos Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal Springs/River Aquatic Ecosystem Final 2012 Annual Report |
Description:
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Annual report for 2012 on biota study of Comal Springs/River
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| Title: |
Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the San Marcos Springs/River Aquatic Ecosystem Final 2012 Annual Report |
Description:
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Annual report for 2012 on biota study of San Marcos Springs/River
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| 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:
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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.
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| 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:
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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.
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| 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:
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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.
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| 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:
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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.
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| 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:
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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.
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2006 |
Description:
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Annual report for 2006 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
2010 Edwards Aquifer Hydrologic Data Fact Sheet for Precipitation, Groundwater Levels and Drought Conditions |
Description:
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Summary for 2010 on precipitation, groundwater levels, and drought in the Edwards Aquifer San Antonio Region
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| Title: |
Measuring Floodplain Hydraulics of the Frio River Where it Overlies the Edwards Aquifer |
Description:
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Structural and hydrogeological survey of the Frio River to determine if water table underflow contributes to the water budget of the Edwards Aquifer Recharge Zone
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| Title: |
2011 Hydrologic Data Fact Sheet for Precipitation, Groundwater Levels and Drought Conditions |
Description:
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Summary for 2011 on precipitation, groundwater levels, and drought in the Edwards Aquifer San Antonio Region |
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| Title: |
Edwards Aquifer Authority Hydrogeologic Data Report for 1999 |
Description:
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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: https://www.edwardsaquifer.org/documents/2000_Esquil in‐etal_1999HydrologicData‐Plates.pdf.
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| Title: |
Edwards Aquifer Hydrogeologic Report for 2000 |
Description:
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Annual report for 2000 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrogeologic Report for 2001 |
Description:
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Annual report for 2001 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrogeologic Report for 2002 |
Description:
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Annual report for 2002 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2003 |
Description:
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Annual report for 2003 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2004 |
Description:
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Annual report for 2004 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2005 |
Description:
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Annual report for 2005 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Refining the Conceptual Model for Flow in the Edwards Aquifer—Characterizing the Role of Fractures and Conduits in the Balcones Fault Zone Segment |
Description:
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Hydrogeologic study using existing data on role of fractures and conduits in groundwater flow in the recharge and artesian zones of the Edwards Aquifer Balcones Fault Zone
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2011 |
Description:
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Annual report for 2011 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| 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:
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Annual report for 1983-84 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
1985 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1985, with 1934-85 Summary |
Description:
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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: https://www.edwardsaquifer.org/wp-content/uploads/2019/05/1987_Ozuna-etal_1985HydrologicData.pdf. |
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| Title: |
1986 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1986, with 1934-86 Summary |
Description:
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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: https://www.edwardsaquifer.org/wp-content/uploads/2019/05/1988_Ozuna-etal_1986HydrologicData.pdf
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| Title: |
1987 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1987, with 1934-87 Summary |
Description:
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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 |
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| Title: |
1988 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1988, with 1934-88 Summary |
Description:
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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: https://www.edwardsaquifer.org/wp-content/uploads/2019/05/1989_Nalley_1988HydrologicData.pdf.
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| Title: |
1989 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1989, with 1934-89 Summary |
Description:
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Annual report for 1989 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
1990 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1990, with 1934-90 Summary |
Description:
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Annual report for 1990 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
1991 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1991, with 1934-91 Summary |
Description:
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Annual report for 1991 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Hydrogeologic Status Report for 1992 |
Description:
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Annual report for 1992 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
1994 Review and Update of the Position of the Edwards Aquifer Freshwater/Saline-Water Interface from Uvalde to Kyle, Texas |
Description:
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1994 attempt to describe the location of the freshwater/saline-water interface accurately from Kyle to Uvalde, Texas
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1995 |
Description:
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Annual report for 1995 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1998 |
Description:
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Annual report for 1998 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Defining the Edwards Aquifer Freshwater/Saline-Water Interface with Geophysical Logs and Measured Data (San Antonio to Kyle, Texas) |
Description:
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Analysis of geophysical logs to define the freshwater/saline water interface in the Edwards Aquifer between San Antonio and Kyle, TX. Note: Large-format versions of the plates for this report are available in a companion document.
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| Title: |
Hydrogeologic Framework and Geochemistry of the Edwards Aquifer Saline-Water Zone, South-Central Texas |
Description:
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Geochemical study of the Edwards Aquifer saline zone in relation to location of downdip and geological faults
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| Title: |
Investigation of the Fresh/Saline Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas Executive Summary |
Description:
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Attempts to define the freshwater/saline water boundary and its movement in the New Braunfels/San Marcos area from monitoring well data.
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| Title: |
The Edwards Aquifer Extremely Productive, but… |
Description:
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Semi-technical description of the Edwards aquifer and considerations for its use and preservation for the general public and policy-makers
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| Title: |
Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas) |
Description:
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Note: Large-format versions of the plates for this report are available in a companion document. Analysis of geophysical logs and well data to redefine the boundary of the freshwater/saline interface in the Edwards Aquifer Balcones Fault Zone San Antonio Segment.
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| Title: |
Report on the Edwards Aquifer San Antonio Region, Texas |
Description:
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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.
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| Title: |
South Medina County Observation Well Project |
Description:
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Drilling and evaluation of a new test well in South Medina County to refine the location of the freshwater / saline water interface in the Edwards Aquifer interface between San Antonio and Uvalde, Texas
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| Title: |
Geochemical and Isotopic Analyses of Waters Associated with the Edwards Limestone Aquifer, Central Texas |
Description:
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Inorganic chemical analyses of various Edwards Aquifer samples circa 1976 using new field methods
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| Title: |
File Memorandum on Review of Water Quality Changes in Edwards Reservoir-Especially Near the Bad Water Line |
Description:
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File memorandum on review of water quality from monitoring wells near the bad water line through 1967 Note: Page-size and large-format size of original plate are at the end of the document.
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| Title: |
Drilling, Construction and Testing of Monitor Wells for the Edwards Aquifer Bad Water Line Experiment |
Description:
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Study of the fresh water-saline interface using new monitoring wells in the San Antonio Artesia Water Field. Note: This report is included for its historical value and may no longer reflect current conditions.
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| Title: |
Hydrogeologic Data from a Study of the Freshwater Zone/Salinewater Zone Interface in the Edwards Aquifer, San Antonio Region, Texas |
Description:
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Initial hydrogeological study of the freshwater/saline water boundary and potential for saltwater intrusion in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment
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| Title: |
Potential for Updip Movement of Salinewater in the Edwards Aquifer, San Antonio, Texas |
Description:
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Modeling the shift of the freshwater-saline water interface under various conditions over a 10-year period
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1993 |
Description:
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Annual report for 1993 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Environmental Tritium in the Edwards Aquifer Central Texas 1963-71 |
Description:
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Analysis of tritium in 50 wells and springs in the San Antonio area
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1994 |
Description:
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Annual report for 1994 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Investigation of the Fresh/Saline Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas – Appendices |
Description:
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Attempts to define the freshwater/saline water boundary and its movement in the New Braunfels/San Marcos area from monitoring well data - Appendices
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| Title: |
Analysis of Data from Test-Well Sites along the Downdip Limit of Freshwater in the Edwards Aquifer, San Antonio, Texas, 1985-87 |
Description:
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Geochemical and hydrochemical study of the Edwards Aquifer downdip area and saline-freshwater interface in the San Antonio area
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| Title: |
Bad Water Line Transect Pumping Test at San Antonio City Water Board’s Artesia Station, March 25, 1987 |
Description:
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Pumping test at the San Antonio Artesia Station to determine stability and recovery of wells from stress. Note: Page-size and large-format plates are at the end of the document.
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| Title: |
Investigation of the Fresh/Saline Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas – Report |
Description:
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Attempts to define the freshwater/saline water boundary and its movement in the New Braunfels/San Marcos area from monitoring well data - Report
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| Title: |
Effects of Brush Management on the Hydrologic Budget and Water Quality In and Adjacent to Honey Creek State Natural Area, Comal County, Texas, 2001-10 |
Description:
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Effects of brush management on hydrologic budget and water quality. May not be generalizable to all locations. See Fact Sheet companion document of the same name.
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| Title: |
Measuring Floodplain Hydraulics of Seco Creek and Medina River Where They Overlie the Edwards Aquifer – Final Report |
Description:
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Study of the hydraulic relationships between Seco Creek, the Medina River, and the Edwards Aquifer
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| Title: |
Edwards Aquifer Authority Hydrologic Data Summary for 2007 |
Description:
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2007 hydrologic data summary
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2007 |
Description:
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Annual report for 2007 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2008 |
Description:
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Annual report for 2008 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2009 |
Description:
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Annual report for 2009 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2010 |
Description:
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Annual report for 2010 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
1988 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1988, with 1934-88 Summary – Plates |
Description:
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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.
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| Title: |
1989 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1989, with 1934-89 Summary – Plates |
Description:
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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.
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| Title: |
Edwards Aquifer Authority Hydrogeologic Data Report for 1999 – Plates |
Description:
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High-resolution fulll-size plates from "Edwards Aquifer Authority Hydrogeologic Data Report for 1999". Note: large-format printer required.
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| Title: |
1985 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1985, with 1934-85 Summary – Plates |
Description:
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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.
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| Title: |
1986 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1986, with 1934-86 Summary – Plates |
Description:
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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.
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| Title: |
Defining the Edwards Aquifer Freshwater/Saline-Water Interface with Geophysical Logs and Measured Data (San Antonio to Kyle, Texas) – Plates |
Description:
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Analysis of geophysical logs to define the freshwater/saline water interface in the Edwards Aquifer between San Antonio and Kyle, TX. Note: These are large-format versions of the plates for the companion document.
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| Title: |
Government Canyon Geologic and Hydrologic Assessment |
Description:
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Government Canyon geologic and hydrologic assessment
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| Title: |
Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas) – Plates |
Description:
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Full-size plates from Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas). See companion document.
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| Title: |
Effects of Brush Management on the Hydrologic Budget and Water Quality In and Adjacent to Honey Creek State Natural Area, Comal County, Texas, 2001-10 [Fact Sheet] |
Description:
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Fact Sheet companion document to full report of the same name.
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| Title: |
The Edwards Underground Reservoir [Trifold Brochure and Map] |
Description:
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Map and summary of the Edwards Aquifer and Edwards Underground Water District. Note: this information is no longer current but is included for historical value.
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2012 / Report No. 13-01 |
Description:
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Annual report for 2012 on recharge, discharge, precipitation, water levels and water quality in the Edwards Aquifer Balcones Fault Zone San Antonio Segment
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| Title: |
1990 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1990, with 1934-90 Summary-Plates |
Description:
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Large-format plates for the 1990 Hydrologic Data Report - see companion document.
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| Title: |
1991 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1991, with 1934-91 Summary-Plates |
Description:
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Large-format plates for the 1991 Hydrologic Data Report. See companion document.
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| Title: |
1994 Review and Update of the Position of the Edwards Aquifer Freshwater/Saline-Water Interface from Uvalde to Kyle, Texas-Plates |
Description:
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Large-format plates for 1994 Review and Update of the Position of the Edwards Aquifer Freshwater/Saline-Water Interface from Uvalde to Kyle, Texas. See companion document.
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1996 |
Description:
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Annual report for 1996 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1996-Plates |
Description:
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Large-format plates for Edwards Aquifer Hydrogeologic Report for 1996. See companion document.
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1997-Plates |
Description:
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Large-format plates for Edwards Aquifer Hydrogeologic Report for 1997. See companion document.
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| Title: |
Edwards Aquifer Hydrogeologic Report for 1997 |
Description:
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Annual report for 1997 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
The Edwards Underground Reservoir and the Edwards Underground Water District |
Description:
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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. |
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| Title: |
Water Quality Trends Analysis of the San Antonio Segment, Balcones Fault Zone Edwards Aquifer, Texas |
Description:
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Collection and analysis of thousands of groundwater, surface water, and spring water samples to evaluate water quality in the San Antonio segment of the Balcones Fault Zone Edwards Aquifer of south central Texas.
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| Title: |
Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2013 |
Description:
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Appendix C of annual report for 2013 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2013 |
Description:
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Annual report for 2013 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2014 |
Description:
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Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2014 Year 2014 Water Quality Data
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| Title: |
Field and Laboratory Tests of Passive Sampling Techniques |
Description:
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One of the objectives of the study was to compare the results between the five urban wells and the two rural wells. Only one rural sample contained PCE, and all the other detections were fuel-related compounds, in contrast to the frequent detections of PCE in the urban wells.
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