| Title: |
Edwards Aquifer System [Map] |
Description:
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Map of the Edwards Aquifer System, Balcones Fault Zone, San Antonio Segment
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| Title: |
Review of Hydrocarbon Transmission Lines Crossing the Edwards Underground Reservoir |
Description:
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Risk assessment on the likelihood of leaks from oil pipelines over the Edwards Aquifer
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| Title: |
Edwards Aquifer Authority Data Management Plan |
Description:
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Description the objective, tasks, and database structure for the Edwards Aquifer Authority’s data management system
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| Title: |
Report on the Effectiveness of the Edwards Aquifer Authority |
Description:
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Assessment of the effectiveness of the Edwards Aquifer Authority by the South Central Texas Water Advisory Committee with respect to measures established in 2008
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| Title: |
Fifth Biennial Report on the Effectiveness of the Edwards Aquifer Authority |
Description:
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Central Texas Water Advisory Committee for FYs 2004-2006, and recommendations for future actions
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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: |
Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 2 Appendices I, II, IV, VI |
Description:
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Note: This report is included for its historical value and may have been replaced by more recent studies.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.
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| Title: |
The Edwards Underground Water District and Edwards Underground Reservoir |
Description:
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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.
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| Title: |
Strategic Plan 2002-2006 |
Description:
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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.
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| Title: |
Edwards Aquifer Authority Technical Documents Project Phase I |
Description:
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Documentation of Phase I of the Edwards Aquifer Authority Technical Documents Project from 2011-2012
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| Title: |
Edwards Underground Water District: Created to Conserve, Protect and Preserve the Edwards Aquifer |
Description:
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History and overview of the Edwards Aquifer and the Edwards Underground Water District
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| Title: |
The Water Source |
Description:
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Features and summaries of news and scientific studies published by the Edwards Underground Water District from 1989-1996
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| Title: |
Edwards Aquifer Authority Technical Documents Project Phase II |
Description:
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Documentation of Phase II of the Edwards Aquifer Authority Technical Documents Project from 2012-2014
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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:
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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: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1965 |
Description:
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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:
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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:
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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:
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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:
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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:
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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, 1972-73 |
Description:
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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: |
Summary Information Regarding Historical Edwards Aquifer Recharge, Aquifer Modeling and Recharge Enhancement Projects |
Description:
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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: |
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: |
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: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1971 |
Description:
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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: |
Variable Flow Study – Seven Years of Monitoring and Applied Research |
Description:
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Summary of the Comprehensive and Critical Period Monitoring Program to Evaluate the Effects of Variable Flow on Biological Resources in the Comal and San Marcos Springs Ecosystems Aquatic for 2000-2007
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| 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:
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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.
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| Title: |
Fauna of Wells Near the Saline Water line of the Edwards Aquifer, Texas |
Description:
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Zara Deep Aquifer Biota Study of Fauna of Wells Near the Saline Water line of the Edwards Aquifer
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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:
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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: |
2010 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge |
Description:
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Summary for 2010 on recharge and discharge 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: |
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: |
2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge |
Description:
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2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
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| Title: |
Analysis of Recharge and Recirculation Edwards Aquifer Phase 1 |
Description:
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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: |
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: |
Proposed 10-Year Plan for Continuation of Hydrologic Studies of the Edwards Aquifer, San Antonio Area, Texas |
Description:
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Ten-year research priorities for the Edwards Aquifer Balcones Fault Zone San Antonio Segment conducted jointly by the Edwards Underground Water District and the U.S. Geological Survey
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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: |
Groundwater Level Monitoring Plan |
Description:
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Guidance for collecting groundwater data by the Edwards Aquifer Authority
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| Title: |
Edwards Aquifer Authority Groundwater Management Plan 1998-2008 |
Description:
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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.
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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 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: |
Aquifer Science Research Program Plan: 2006-2011 |
Description:
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Edwards Aquifer Authority Aquifer Science Research Program Plan for 2006-2011
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| Title: |
Edwards Aquifer Authority Aquifer Science Research Program Plan 2012-2015 |
Description:
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Edwards Aquifer Authority Aquifer Science Research Program Plan for 2012-2015
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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: |
Edwards Aquifer Authority Hydrologic Data Report for 2014 |
Description:
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Annual report for 2014 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
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| Title: |
Augmenting Groundwater Recharge Through Brush Control: A Feasibility Study—Phase II |
Description:
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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:
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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:
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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:
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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:
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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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