Displaying Groundwater Recharge, Recharge Zone 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
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Title: 2010 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
Description:
Summary for 2010 on recharge and discharge in the Edwards Aquifer San Antonio Region
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Title: 2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
Description:
2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
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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.
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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
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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
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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
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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
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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
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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
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Title: Analysis of Recharge and Recirculation Edwards Aquifer Phase 1
Description:
Testing the MODFLOW model with historical data of recharge and recirculation at two hypothetical recharge sites prior to release of the model
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Title: Analysis of Recharge and Recirculation Edwards Aquifer Phase 2
Description:
Use of the MODFLOW model to examine recharge at eight sites in the Edwards Aquifer and discharge at San Marcos Springs
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Title: Recharge and Recirculation / Edwards Aquifer Optimization Program Phase III / IV Report Final
Description:
Continued and final analyses using improved flow model and recent agency rules for optimizing recharge and streamflow in the Edwards Aquifer
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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
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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:
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:
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.
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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:
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
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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:
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:
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.
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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:
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:
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:
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:
Annual report for 1992 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 1995
Description:
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 1997
Description:
Annual report for 1997 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:
Annual report for 1998 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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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
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Title: Recharge Enhancement Study Guadalupe-San Antonio River Basin Volume I-Executive Summary
Description:
Development of the GSA Model to estimate recharge to the Edwards Aquifer from the San Antonio and Guadalupe River basins and effects of additional recharge structures
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Title: Recharge Enhancement Study Guadalupe-San Antonio River Basin Volume III-Appendices
Description:
Appendices to Recharge Enhancement Study Guadalupe-San Antonio River Basin. See companion documents.
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Title: Recharge Enhancement Study Guadalupe-San Antonio River Basin Volume II-Technical Report
Description:
Technical Report for Recharge Enhancement Study Guadalupe-San Antonio River Basin. See companion documents.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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:
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:
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:
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:
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:
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: Quantity and Quality of Low Flow in the Hondo Creek Basin, Texas March 27-28, 1968
Description:
Low-flow study of Hondo Creek Basin, TX March 27-28, 1968
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Title: Medina Lake Hydrology Study
Description:
Hydrologic and hydraulic analyses for the Medina Lake and Medina Diversion Lake reservoir system
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Title: Phase I Edwards Underground Water District Storage-Release Recharge Facility Evaluation
Description:
Engineering and simulation study to evaluate two potential sites for storage/release reservoirs on the Frio and Dry Frio Rivers. Note: This report is included for its historical value and may have been replaced by more recent studies.
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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.
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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.
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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
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Title: A Statistical Study of the Hydrological Character of the Edwards Aquifer
Description:
Statistical analysis of surface and groundwater levels from October 1998 storm event
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Title: Optimum Streamflow and Rainfall Gauging Site Location Study As Part of Real Time Data Collection Network Assessment
Description:
Streamflow and rainfall optimum gauging study and recommendations for improving accuracy of recharge estimates to the Edwards Aquifer
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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.
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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.
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Title: Edwards Aquifer Authority Rain Gauge Analysis Study Report
Description:
Recommendations for optimizing placement of rain gauges in the Edwards Aquifer area
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Title: Method of Estimating Natural Recharge to the Edwards Aquifer in the San Antonio Area, Texas
Description:
US Geological Survey method of estimating recharge in the Edwards Aquifer Balcones Fault Zone San Antonio Segment
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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
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Title: Edwards Aquifer Ground-Water Divides Assessment, San Antonio Region, Texas
Description:
Hydrogeologic study on location of groundwater divides in Hays and Kinney Counties
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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
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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:
Water quality study on stormwater runoff in an urbanizing vs rural area of the Edwards Aquifer Recharge Zone
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Title: Hydrogeology, Hydrologic Budget and Water Chemistry of the Medina Lake Area, Texas
Description:
Assessment of the geology, hydrogeology and hydrology of Medina and Diversion Lakes and seepage into the Edwards / Trinity aquifers
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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:
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:
Study of the hydraulic relationships between Seco Creek, the Medina River, and the Edwards Aquifer
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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
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Title: Edwards Aquifer Authority Hydrologic Data Summary for 2007
Description:
2007 hydrologic data summary
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Title: Assessment of Recharge Benefit from Enhanced Rainfall
Description:
Using the HSPF model to estimate recharge in the Blanco and Nueces River basins from the Edwards Aquifer Authority Precipitation Enhancement Program in 1999-2001
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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
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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
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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
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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
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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
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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
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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
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Title: Water-Budget Analysis of Medina and Diversion Lakes and the Medina/Diversion Lake System, with Estimated Recharge to Edwards Aquifer, San Antonio, Texas
Description:
Water-budget analysis for Medina and related lakes including recharge in the Edwards Aquifer from 1995-2002
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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)
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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)
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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)
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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:
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:
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:
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:
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:
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: 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.
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Title: Government Canyon Geologic and Hydrologic Assessment
Description:
Government Canyon geologic and hydrologic assessment
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Title: Recharge to and Discharge from the Edwards Aquifer in the San Antonio Area, Texas, 1998
Description:
Short report summarizing recharge and discharge to and from the Edwards Aquifer from 1934-1998
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Title: Optimization Technical Studies in Support of the Edwards Aquifer Optimization Program
Description:
Summary of proposed optimization studies for the EAA. Note: Is outdated. Has been replaced by more recent modeling studies and water plans.
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Title: Trans-Texas Water Program West Central Study Area Phase 2 Edwards Aquifer Recharge Analyses
Description:
Part of Phase II of the West Central Study Area, Trans-Texas Water Program. Included for historical value; has been replaced by more recent plans.
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Title: The Edwards Underground Reservoir [Trifold Brochure and Map]
Description:
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:
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: 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.
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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:
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:
Large-format plates for the 1991 Hydrologic Data Report. See companion document.
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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
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Title: Edwards Aquifer Hydrogeologic Report for 1996-Plates
Description:
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:
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:
Annual report for 1997 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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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:
EUWD staff recommendations to the EUWD Board regarding potential cumulative impact of development over the Edwards Aquifer Recharge Zone
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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
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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
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Title: DEVELOPMENT OF A FINITE-ELEMENT METHOD GROUNDWATER FLOW MODEL FOR THE EDWARDS AQUIFER
Description:
Attributes of the alternative model that set it conceptually independent from the 2004 MODFLOW model are:  Inclusion of the Contributing Zone  Recharge is calculated directly from precipitation and is not prescribed at the upgradient side of the Recharge Zone  Western boundary is refined to better define the Kinney Pool  The Contributing and Recharge Zones are characterized by three layers  Distinct conduits are included in the Confined Zone  The alternative model employs a finite-element formulation instead of the finite-difference formulation used in the 2004 MODFLOW model
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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
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Title: Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2014
Description:
Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2014 Year 2014 Water Quality Data
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Title: Augmenting Groundwater Recharge Through Brush Control: A Feasibility Study—Phase II
Description:
This report summarizes the findings of a 5-year (November 2004–December 2009) investigation of the water dynamics at two sites overlying shallow caves within the Camp Bullis facility in northern Bexar County, Texas. The results of the first phase of this study (November 2004–November 2007) were documented in the Phase I report (Wilcox 2008). In this Phase II report, we summarize the results from the entire study period, focusing on rainfall, cave recharge, and the rainfall simulation experiments conducted during Phase II.
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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
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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
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Title: Updates to the MODFLOW Groundwater Model of the San Antonio Segment of the Edwards Aquifer
Description:
MODFLOW groundwater model springflow in the Edwards Aquifer Balcones Fault Zone San Antonio Segment and Barton Springs segment
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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.
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Title: Universal Passive Samplers and the Aliasing Problem in Groundwater Sampling
Description:
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: Helotes Mulch Fire 2006 Tracing Groundwater Flow Using Natural Fluorescent Materials
Description:
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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