| Title: |
The Installation Operation and Analysis of Eddy Covariance for Quantifying Evapotranspiration |
Description:
 |
This report summarizes the installation, operation, and data reporting of three towers using eddy covariance techniques to directly measure evapo-transpiration of water flux between the land and atmosphere. |
Details
View
Download
|
| Title: |
Interconnection of the Trinity (Glen Rose) and Edwards Aquifers along the Balcones Fault Zone and Related Topics – Karst Conservation Initiative |
Description:
 |
Edwards Aquifer – Upper Glen Rose Aquifer Hydraulic Interaction |
Details
View
Download
|
| Title: |
Status of Satan eurystomus Gubbs and Bailey, the widemouth blindcat |
Description:
 |
Longley, G., and H. Karnei, Jr. 1978b. Status of Satan eurystomus Gubbs and Bailey, the widemouth blindcat. Endangered Species Report 5. U.S. Fish and Wildlife Service, Albuquerque, NM. |
Details
View
Download
|
| Title: |
Quantifying Diffuse Recharge at Camp Bullis, TX: Integrating Soil Water, Evapotranspiration, and Remote Sensing |
Description:
 |
This report summarizes the results of a three-year study centered in Camp Bullis in northern Bexar County that evaluates diffuse recharge into the Edwards and Trinity aquifers using direct ET measurements, remotely sensed data, and Hydrus models to estimate the amount of recharge in the Cibolo Basin. |
Details
View
Download
|
| Title: |
Geologic Framework and Hydrostratigraphy of the Edwards and Trinity Aquifers Within Northern Medina County, Texas |
Description:
 |
Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Medina County, Texas |
Details
View
Download
|
| Title: |
Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within Hays County, Texas |
Description:
 |
Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within Hays County, Texas |
Details
View
Download
|
| Title: |
Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas |
Description:
 |
Geologic framework and hydrostratigraphy of the outcrops and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Tex. |
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for County Line Water Supply Corporation Caldwell & Hays Counties, Texas |
Description:
 |
Leak detection and location survey report for County Line Water Supply Corporation, 1994. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
The Water Level |
Description:
 |
Periodical publication of the Edwards Underground Water District for the general public. Note: Legal-size format.
|
Details
View
Download
|
| Title: |
The Water Level |
Description:
 |
Periodical publication of the Edwards Underground Water District for the general public
|
Details
View
Download
|
| Title: |
The Abbreviated Water Conservation Working Handbook |
Description:
 |
An abbreviated version of the more comprehensive Water Conservation Working Handbook. Used by Water Conservation Task Force Committees throughout the Edwards Underground Water District, the complete Working Handbook promotes the development and use of new technologies and practices that improve water use efficiency. Note: This document is included for historical value but may have been superseded by more recent reports.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for East Medina County Water Supply Corporation, August 10, 1995-October 10, 1995 |
Description:
 |
Leak detection and location survey report for East Medina County Water Supply Corporation, August 10, 1995-October 10, 1995. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Kyle, May 16, 1995-June 5, 1995 |
Description:
 |
Leak detection and location survey report for City of Kyle, TX from May 16, 1995-June 5, 1995. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Garden Ridge, Comal County, Texas: March 1, 1996-April 30, 1996 |
Description:
 |
Leak detection and location survey report for City of Garden Ridge, March 1, 1996-April 30, 1996. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for Southwest Texas State University, Hays County, Texas, April 22, 1996-July 26, 1996 |
Description:
 |
Leak detection and location survey report for Southwest Texas State University, April 22, 1996-July 26, 1996. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection Survey Report for Southwest Texas State University, San Marcos: June 14, 1993-June 18, 1993 |
Description:
 |
Leak detection and location survey report for Southwest Texas State University, June 14-18, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Marion: May 1, 1996-May 31, 1996 |
Description:
 |
Leak detection and location survey report for City of Marion, TX, May 1-31, 1996. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the Fairco Water Company, Bexar County, Texas: December 13, 1995-March 8, 1996 |
Description:
 |
Leak detection and location survey report for Fairco Watrr Company, 1996. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection Survey Report for the city of Schertz: Schertz, Texas, January 11, 1993 – April 2, 1993 |
Description:
 |
Leak detection and location survey report for City of Schertz, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection Survey Report for the city of Lytle |
Description:
 |
Leak detection and location survey report for City of Lytle, 1992. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Converse, Bexar County, Texas, July 5, 1995-October 24, 1995 |
Description:
 |
Leak detection and location survey report for City of Converse, 1995 (published in 1996). Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Live Oak / Live Oak, Texas March 23, 1995-April 7, 1995 |
Description:
 |
Leak detection and location survey report for City of Live Oak, 1995. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for Lackland Air Force Base, Bexar County, Texas, February 27, 1995 – August 8, 1995 |
Description:
 |
Leak detection and location survey report Lackland Air Force Base, 1995. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for San Antonio water system service area within the city limits of the city of Leon Valley, June 15, 1993-July 2, 1993 |
Description:
 |
Leak detection and location survey report for City of Leon Valley, June 15, 1993-July 2, 1993. Note similar report for May 4, 1993-August 1993, a time period included in this report. This function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Cibolo, Texas, November 2, 1993-December 2, 1993 |
Description:
 |
Leak detection and location survey report for City of Cibolo,Texas, November 2, 1993-December 2, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Leon Valley, Texas, city of Leon Valley water system, May 4, 1993-August 1993 |
Description:
 |
Leak detection and location survey report for City of Leon Valley May 4, 1993-August 1993. Note similar report for June 15, 1993-July 2, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for Green Valley Special Utility District, May 12, 1993-October 29, 1993 |
Description:
 |
Leak detection and location survey report for City of Leon Valley May 4, 1993-August 1993. Note similar report for June 15, 1993-July 2, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for Springs Hill Water Supply Corporation, January 31, 1994-March 28, 1994 |
Description:
 |
Leak detection/location survey report for Springs Hill Water Supply Corp, Seguin, Guadalupe County, January 31, 1994-March 28, 1994. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for the City of Kirby, Bexar County, Texas: May 1, 1995-May 16, 1995, June 6, 1995-June 30, 1995, October 25, 1995-December 12, 1995 |
Description:
 |
Leak detection/location survey report for City of Kirby, May 1, 1995-May 16, 1995, June 6, 1995-June 30, 1995, October 25, 1995-December 12, 1995. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for Bexar Metropolitan Water District, northeast/northwest San Antonio, Texas: March 21, 1994-February 24, 1995 |
Description:
 |
Leak detection/location survey report for Bexar Metropolitan Water District, March 21, 1994-February 24, 1995. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection/Location Survey Report for Fort Sam Houston, Bexar County, Texas, July 22, 1993-February 4, 1994 |
Description:
 |
Leak detection/location survey report for Fort Sam Houston, July 22, 1993 - February 4, 1994. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection Survey Report for the City of Uvalde, Texas, January 11, 1993-April 26, 1993 |
Description:
 |
Leak detection and location survey report for City of Uvalde, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Leak Detection Survey Report for Bexar Metropolitan Water District: San Antonio, Texas, February 10, 1992-January 8, 1993 |
Description:
 |
Leak detection and location survey report for Bexar Metropolitan Water District, San Antonio, 1993. Note: this function was taken over by the San Antonio Water System in 2006.
|
Details
View
Download
|
| Title: |
Comprehensive Water Management Plan Edwards Aquifer Authority |
Description:
 |
Edward Aquifer Authority’s Comprehensive Water Management Plan as required by Section 1.25 of the Edwards Aquifer Authority Act, for 2000-2030.
|
Details
View
Download
|
| Title: |
Evaluation of the Availability of Additional Water Supplies from the Edwards Aquifer |
Description:
 |
Decision analysis of eight strategies for their utility in a possible adjustment of the Edwards Aquifer withdrawal cap
|
Details
View
Download
|
| Title: |
Draft 30-Year Water Supply Plan |
Description:
 |
Draft of 30-year water supply plan for 2000-2030 as part of the Authority's Comprehensive Water Management Plan, adapted from the pertinent parts of the South Central Texas Regional Water Plan
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Letter of Intent Analysis |
Description:
 |
Feasibility and cost analysis for providing surface water to San Antonio from the Guadalupe River. Note: This report is included because of its historical value but has been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Public Participation / Stakeholder Involvement Program Final Report |
Description:
 |
Summary of stakeholder involvement in the 1998 Trans-Texas Water Program West Central Study Area
|
Details
View
Download
|
| Title: |
Programmatic Assessment: Proposed Rules 31 TAC Chapters 701, 702, 703, 705, 707, 709, 711 – Part 1 |
Description:
 |
Part 1 of report on interviews of stakeholders and analysis of how to implement the Edwards Authority Act
|
Details
View
Download
|
| Title: |
Programmatic Assessment: Proposed Rules 31 TAC Chapters 701, 702, 703, 705, 707, 709, 711 – Part 2 |
Description:
 |
Part 2 of report on interviews of stakeholders and analysis of how to implement the Edwards Authority Act
|
Details
View
Download
|
| Title: |
Programmatic Assessment: Proposed Rules 31 TAC Chapters 701, 702, 703, 705, 707, 709, 711 – Part 3 |
Description:
 |
Part 3 of report on interviews of stakeholders and analysis of how to implement the Edwards Authority Act
|
Details
View
Download
|
| Title: |
Edwards Underground Water District Drought Management Plan |
Description:
 |
Trigger conditions and actions to manage the Edwards Aquifer under conditions of drought. Note: This document is included for historical value and may have been replaced by more recent documents, including the Habitat Conservation Plan.
|
Details
View
Download
|
| Title: |
Edwards Underground Water District strategic plan (1994-2004) |
Description:
 |
Goals and objectives for the Edwards Underground Water District from 1994-2004. Note: This document is included for its historical value and has been replaced by more recent ones.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 5 / Comments Received from the Advisory Committee for Public and Technical Input |
Description:
 |
Comments on public input for Phase I of the Trans-Texas Water Plan for West Central Texas
|
Details
View
Download
|
| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1967 |
Description:
 |
Chemical analyses of water from 37 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1967. Note: This report is included for its historical value; results may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Analysis of Water Quality Data for East Elm, West Elm and Lorence Creeks |
Description:
 |
Water quality in three small watersheds in the Edwards Aquifer Recharge Zone in relation to storm water runoff and urbanization, 1976 - 1980
|
Details
View
Download
|
| Title: |
Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas August 1968-April 1972 |
Description:
 |
Surface and groundwater quality monitoring in the San Antonio area, 1968-1972
|
Details
View
Download
|
| Title: |
Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas August 1968-January 1975 |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Chemical and Bacteriological Quality of Water at Selected Sites in the San Antonio Area, Texas February 1975-September 1977 |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Investigation of Volatile Organic Compounds in Groundwater Uvalde, Texas Edwards Underground Water District Field Activities from January 1984 through April 1988 |
Description:
 |
Survey of groundwater to determine the source of tetrachloroethylene (PCE) in the Edwards Aquifer near the Uvalde, TX airport
|
Details
View
Download
|
| Title: |
Preliminary Feasibility Assessment of Edwards Aquifer Saline Water Treatment and Use |
Description:
 |
Feasibility of desalination from the Edwards Aquifer for public drinking water
|
Details
View
Download
|
| Title: |
Water Quality at Selected Locations in the San Antonio Area, Texas: Progress Report, 1972 |
Description:
 |
Results of water quality testing at selected sites in the Edwards Aquifer from September 1969 – August 1971
|
Details
View
Download
|
| Title: |
Tracer Test Work Plan, Kinney and Uvalde Counties |
Description:
 |
Plan for dye tracer studies in Kinney and Uvalde Counties
|
Details
View
Download
|
| Title: |
Streamflow Conditions in the Guadalupe River Basin, South-Central Texas, Water Years 1987-2006-An Assessment of Streamflow Gains and Losses and Relative Contribution of Major Springs to Streamflow |
Description:
 |
Use of streamflow and springflow data to estimate contribution of springflow from Comal, San Marcos and Hueco Springs to streamflow in the Guadalupe River Basin
|
Details
View
Download
|
| Title: |
Evaluation of the Use of Remote-Sensing Data to Identify Crop Types and Estimate Irrigated Acreage, Uvalde and Medina Counties, Texas, 1989 |
Description:
 |
Using the landsat thematic mapper to estimate total irrigated acreage and acre-feet of irrigation water for Uvalde and Medina Counties in 1991
|
Details
View
Download
|
| Title: |
Use of landsat thematic mapper data to identify crop types and estimate irrigated acreage, Uvalde and Medina Counties, Texas, 1991 |
Description:
 |
Using the landsat thematic mapper to estimate total irrigated acreage and acre-feet of irrigation water for Uvalde and Medina Counties in 1991
|
Details
View
Download
|
| Title: |
Edwards Aquifer System [Map] |
Description:
 |
Map of the Edwards Aquifer System, Balcones Fault Zone, San Antonio Segment
|
Details
View
Download
|
| Title: |
Review of Hydrocarbon Transmission Lines Crossing the Edwards Underground Reservoir |
Description:
 |
Risk assessment on the likelihood of leaks from oil pipelines over the Edwards Aquifer
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Data Management Plan |
Description:
 |
Description the objective, tasks, and database structure for the Edwards Aquifer Authority’s data management system
|
Details
View
Download
|
| Title: |
Report on the Effectiveness of the Edwards Aquifer Authority |
Description:
 |
Assessment of the effectiveness of the Edwards Aquifer Authority by the South Central Texas Water Advisory Committee with respect to measures established in 2008
|
Details
View
Download
|
| Title: |
Fifth Biennial Report on the Effectiveness of the Edwards Aquifer Authority |
Description:
 |
Central Texas Water Advisory Committee for FYs 2004-2006, and recommendations for future actions
|
Details
View
Download
|
| Title: |
Groundwater Quality Monitoring Plan Edwards Aquifer Authority |
Description:
 |
Groundwater quality management plan for the Edwards Aquifer Authority 2003-2006
|
Details
View
Download
|
| Title: |
Water quality of the Edwards Aquifer and streams recharging the aquifer in the San Antonio region, Texas (Map) |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Robust Representation of Dry Cells in MODFLOW |
Description:
 |
Documentation and testing of MODFLOW-NR to improve method for dealing with dry cells in modeling the Edwards Aquifer
|
Details
View
Download
|
| Title: |
Appendix B A Report Investigating Impacts of Aquifer Pumping Limits on Flow of Comal Springs and San Marcos Springs |
Description:
 |
Use of GWSIM-IV model to determine effects of various pumpage reductions on springflow at Comal and San Marcos Springs
|
Details
View
Download
|
| Title: |
Additional Graphical Materials to the Edwards Aquifer (San Antonio Region) Groundwater Flow Model (Lindren et al., 2004) |
Description:
 |
Visual output for flowpath simulation, steady-state and transient water level residuals, and watr-level root mean square error distributions for target wells using MODFLOW/GWSIM models and data from Lindgren et al, 2004
|
Details
View
Download
|
| Title: |
Needs Assessment for Ground-Water Management Model for the Edwards Aquifer (San Antonio Section) |
Description:
 |
Discussion of needs and limitations in developing a model of the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment Note: This report is included for its historical value but may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
City of San Marcos Surface Water Development Plan / A Report To The Edwards Underground Water District September 27, 1988 |
Description:
 |
Plan by the City of San Marcos, TX to develop surface drinking water options with the City of New Braunfels. Note: this document is included for its historical value and may have been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
New Braunfels-San Marcos Surface Water Development |
Description:
 |
Discussion of developing surface water as a supplementary water source for New Braunfels and San Marcos Note: This document is included for its historical value.
|
Details
View
Download
|
| Title: |
San Antonio Regional Water Resource Study-Summary |
Description:
 |
Non-technical discussion of various alternatives for ensuring water supply for the greater San Antonio region through 2040, a 60-year horizon. Note: This report is included for its historical value and may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas [1959-1962] |
Description:
 |
Chemical analyses of water from 129 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment,some data going back to 1959. Note: This report is included for its historical value; results may have been superseded by more recent studies. Last page of file is full-size plate.
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, 1955-62, San Antonio Area, Texas |
Description:
 |
First of annual reports on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1963 |
Description:
 |
Chemical analyses of water from 100 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1963. Note: This report is included for its historical value; results may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1963 |
Description:
 |
Annual report for 1963 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1964 |
Description:
 |
Chemical analyses of water from 80 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1964. Note: This report is included for its historical value; results may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1964 |
Description:
 |
Annual report for 1964 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1965 |
Description:
 |
Chemical analyses of water from 72 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1965. Note: This report is included for its historical value; results may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1965 |
Description:
 |
Annual report for 1965 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Chemical Analyses of Water from Observation Wells in the Edwards and Associated Limestones, San Antonio Area, Texas, 1966 |
Description:
 |
Chemical analyses of water from 37 wells to define the boundary of the freshwater-saline water interface in the Edwards Aquifer Balcones Fault Zone San Antonio segment in 1966. Note: This report is included for its historical value; results may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1966 |
Description:
 |
Annual report for 1966 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1967 |
Description:
 |
Annual report for 1967 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1968 |
Description:
 |
Annual report for 1968 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1969 |
Description:
 |
Annual report for 1969 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1970 |
Description:
 |
Annual report for 1970 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1971 |
Description:
 |
Annual report for 1971 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1972 |
Description:
 |
Annual report for 1972 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1973 |
Description:
 |
Annual report for 1973 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1974 |
Description:
 |
Annual report for 1974 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1975 |
Description:
 |
Annual report for 1975 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Discharge from the Edwards and Associated Limestones, San Antonio Area, Texas, 1976 |
Description:
 |
Annual report for 1976 on discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Edwards Underground Water District Water Conservation Benchmark Study |
Description:
 |
Study to measure consumers' awareness and actions for water conservation. Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 2 Appendices I, II, IV, VI |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies. Volume 2 (Appendices I, II, IV, VI ) of survey by the US Army Corps of Engineers and the Edwards Underground Water District, emphasizing possible locations for reservoirs and containment systems.
|
Details
View
Download
|
| Title: |
Regional Water Resources Plan for the Edwards Aquifer |
Description:
 |
Insight into the joint planning process between the City of San Antonio and the Edwards Underground Water District for preserving quality and quantity of water in the Edwards Aquifer. Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Statistical Summary of Water-Quality Data Collected from Selected Wells and Springs in the Edwards Aquifer Near San Antonio, Texas |
Description:
 |
Compilation and descriptive statistics of water contaminants monitored in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment, from 1973-1982
|
Details
View
Download
|
| Title: |
History of Water in the San Antonio River Valley |
Description:
 |
Colorful narrative history of the San Antonio River basin and the role of water in the location and development of San Antonio
|
Details
View
Download
|
| Title: |
Report of the Technical Data Review Panel on the Water Resources of the South Central Texas Region |
Description:
 |
Assessment and gap analysis of the Edwards Underground Water District Technical Data Review Panel on historical data for water use, water quality, and water supply Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
New Braunfels-San Marcos Crystal Clear Surface Water Development |
Description:
 |
Request for funding from the Edwards Underground Water District for a surface water source and treatment plant for New Braunfels, Crystal Clear and San Marcos, TX. Note: This document is included for its historical value.
|
Details
View
Download
|
| Title: |
North Bexar County Water Resources Study for the Edwards Underground Water District-Executive Summary and Volume I Ground Water |
Description:
 |
Study of the Upper, Middle, and Lower Trinity aquifers and nearby surface waters as potential sources of fresh water for Northern Bexar County in the future. Notes: This report is included for its historical value and may have been replaced by more recent studies. Page-size version of the plate is at the end of the report. Large-format version of the original plate is 216 MB. Available upon request at info@edwardsaquifer.org
|
Details
View
Download
|
| Title: |
San Antonio & Guadalupe River Basins Study (Report to US Congress) |
Description:
 |
Letter to US Congress from directors of various water entities in Central Texas, concerning historical and future use of water and need for Federal funding to ensure adequate supplies. Notes: This report is included for its historical value and may have been replaced by more recent studies. Page-size and large-format plates are at the end of the document.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 1 |
Description:
 |
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 1 contains the Executive Summary, Introduction, and Population, Water Demand and Water Supply Projections for 1990-2050. Note: This study is included for historical value but has been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 2 |
Description:
 |
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 2 contains Water Supply Alternatives and Evaluations and Appendices A-D. Note: This study is included for historical value but has been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 3 |
Description:
 |
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 3 contains the continuation of Water Supply Alternatives and Evaluations and Appendices E-I. Note: This study is included for historical value but has been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase I Interim Report Volume 4 |
Description:
 |
Interim Phase I West Central Texas water plan for the Trans-Texas Water Program. Volume 4 contains the continuation of Water Supply Alternatives and Evaluations and Appendices J and K. Note: This study is included for historical value but has been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Technical Memorandum Public Participation Stakeholder Involvement Process Issues Document |
Description:
 |
Discussion of process for public and stakeholder involvement for the 1998 Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Issues Survey Report West Central Study Area |
Description:
 |
Survey Report of the West Central Texas water plan for the Trans-Texas Water Program. Note: This study is included for historical value but has been replaced by more recent plans.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Summary Report of Water Supply Alternatives |
Description:
 |
Discussion of water supply alternatives for the 1998 Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Guadalupe-San Antonio River Basin Model Modifications & Enhancements |
Description:
 |
Modifications and enhancements for the Guadalupe-San Antonio River Basin Model (GSA Model) for the Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Updated Evaluation of Potential Reservoirs in the Guadalupe River Basin |
Description:
 |
Phase II of the West Central Texas water plan for the Trans-Texas Water Program, containing updated evaluations of potential reservoirs in the Guadalupe River Basin. Note: This report is included for its historical value but has been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Population, Water Demand and Water Supply Projections |
Description:
 |
Projections for population and water demand from 1990-2050 for the 1998 Trans-Texas Water Program West Central Study Area Phase II Note: This report is included for its historical value but has been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Comments |
Description:
 |
Comments from various government and business stakeholders on different sections of Phase 2 of the 1998 Trans-Texas Water Program West Central Study Area Note: This document was included for historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Edwards Aquifer Recharge Analyses |
Description:
 |
Compilation of four studies: Report 1 Guadalupe - San Antonio River Basin Recharge Enhancement Study Feasibility Assessment Report 2 Conceptual Evaluation of Springflow Recirculation Report 3 Modification of Principal Spillways at Existing Flood Control Projects for Recharge Enhancement Report 4 Edwards Aquifer Recharge Update Note: This document was included for historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
San Antonio Regional Water Resource Study |
Description:
 |
Analysis of regional water needs from 1980-2040. Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2006 Regional Water Plan Volume I Executive Summary and Regional Water Plan |
Description:
 |
Volume 1 of the 2006 South Central Texas Regional Water Plan. Note: This report is included for its historical value but has been replaced by the 2011 South Central Texas Regional Water Plan, and ultimately by the Texas Water Plan. Note changes in cover letter.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2011 Regional Water Plan Volume I Executive Summary and Regional Water Plan |
Description:
 |
Volume 1 of the 2011 South Central Texas Regional Water Plan. Note: This report is included for its historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume III Technical Evaluations of Water Supply Options – Part 2 |
Description:
 |
Part 2 of Volume III of three volumes of the 2001 South Central Texas Regional Water Plan. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume III Technical Evaluations of Water Supply Options – Part 1 |
Description:
 |
Part 1 of Volume III of three volumes of the 2001 South Central Texas Regional Water Plan. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume II Technical Evaluations of Alternative Regional Water Plans |
Description:
 |
Volume II of three volumes of the 2001 South Central Texas Regional Water Plan. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Public Participation / Stakeholder Involvement Plan |
Description:
 |
Note: This report is included because of its possible historical value. It has been replaced by more recent plans. Plan for involving the public and stakeholders in the planning process for the Trans-Texas Water Program West Central Study Area
|
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Integrated Resource Planning Committee Final Criteria Report Public Participation / Stakeholder Involvement Process |
Description:
 |
Note: This report is included because of its possible historical value. It has been replaced by more recent plans. Input of public and stakeholders in the Trans-Texas Water Program West Central Study Area.
|
Details
View
Download
|
| Title: |
South Central Texas Region 2000 Water Needs Assessment |
Description:
 |
Note: This report is included for historical value but has been replaced by the Texas Water Plan. Summaries of various sources of water, their costs, and projected needs of each county and jurisdiction by use.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume I Executive Summary and Regional Water Plan-Part 1 |
Description:
 |
Executive Summary and Water Plan for the 2001 South Central Texas Regional Water Plan – Part 1. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
South Central Texas Regional Water Planning Area 2001 Regional Water Plan Volume I Executive Summary and Regional Water Plan-Part 2 |
Description:
 |
Executive Summary and Water Plan for the 2001 South Central Texas Regional Water Plan – Part 2. Note: This report is included for its historical value but was replaced by the 2006 South Central Texas Regional Water Plan, the 2011 South Central Texas Regional Water Plan, and eventually by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Bibliography through 2010 |
Description:
 |
Bibliography of the Edwards Aquifer through 2010
|
Details
View
Download
|
| Title: |
The Edwards Underground Water District and Edwards Underground Reservoir |
Description:
 |
Description of the Edwards Underground Water District and Reservoir. Note: This document is included for its historical value. Note: There is another document with the same title but different content.
|
Details
View
Download
|
| Title: |
Strategic Plan 2002-2006 |
Description:
 |
Strategic Plan for the Authority in the period 2002-2006, including research plans. Note: This document was included for its historical value and has been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Technical Documents Project Phase I |
Description:
 |
Documentation of Phase I of the Edwards Aquifer Authority Technical Documents Project from 2011-2012
|
Details
View
Download
|
| Title: |
Edwards Underground Water District: Created to Conserve, Protect and Preserve the Edwards Aquifer |
Description:
 |
History and overview of the Edwards Aquifer and the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
The Water Source |
Description:
 |
Features and summaries of news and scientific studies published by the Edwards Underground Water District from 1989-1996
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Technical Documents Project Phase II |
Description:
 |
Documentation of Phase II of the Edwards Aquifer Authority Technical Documents Project from 2012-2014
|
Details
View
Download
|
| Title: |
Pilot Recharge Models of the Nueces and Blanco River Basins |
Description:
 |
Pilot study to develop HSPF improvement of the MODFLOW study for recharge in the Blanco and Nueces River Basins
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Discharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1963 |
Description:
 |
Annual report for 1963 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1964 |
Description:
 |
Report for 1964 on estimated recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1965 |
Description:
 |
Annual report for 1965 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1966 |
Description:
 |
Annual report for 1966 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1967 |
Description:
 |
Annual report for 1967 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1968 |
Description:
 |
Annual report for 1968 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1969 |
Description:
 |
Annual report for 1969 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1970 |
Description:
 |
Annual report for 1970 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1972-73 |
Description:
 |
Annual report for 1972-73 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Ground-Water Recharge and Discharge for the Edwards Aquifer in the San Antonio Area, Texas, 1934-77 |
Description:
 |
Annual report for 1977 on recharge and discharge from the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 1 Main Report |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies. Volume 1 of survey by the US Army Corps of Engineers and the Edwards Underground Water District, emphasizing possible locations for reservoirs and containment systems.
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| Title: |
Regional Water Supply Planning Study Phase III-Recharge Enhancement-Nueces River Basin |
Description:
 |
Analysis of nineteen proposed recharge structures for the Nueces River Basin with respect to cost and environmental concerns. Note: This document was included for its historical value but may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Recharge Enhancement Project Phase IVA Nueces River Basin Final Report |
Description:
![]() |
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Rain Gauge Analysis Study Report |
Description:
 |
Recommendations for optimizing placement of rain gauges in the Edwards Aquifer area
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| Title: |
Summary Information Regarding Historical Edwards Aquifer Recharge, Aquifer Modeling and Recharge Enhancement Projects |
Description:
 |
Compilation of historical reports by HDR Engineering on recharge and modeling of the Edwards Aquifer Balcones Fault Zone San Antonio Segment
|
Details
View
Download
|
| Title: |
HSPF Recharge Models for the San Antonio Segment of the Balcones Fault Zone of the Edwards Aquifer – Part 1 |
Description:
 |
Development of complete contributing and recharge zones for the HSPF enhancement to MODFLOW from historical data on all nine drainage basins of the Edwards Aquifer Balcones Fault Zone San Antonio Segment
|
Details
View
Download
|
| Title: |
HSPF Recharge Models for the San Antonio Segment of the Balcones Fault Zone of the Edwards Aquifer – Part 2 |
Description:
 |
Development of complete contributing and recharge zones for the HSPF enhancement to MODFLOW from historical data on all nine drainage basins of the Edwards Aquifer Balcones Fault Zone San Antonio Segment - Part 2
|
Details
View
Download
|
| Title: |
HSPF Recharge Models for the San Antonio Segment of the Balcones Fault Zone of the Edwards Aquifer – Part 3 |
Description:
 |
Development of complete contributing and recharge zones for the HSPF enhancement to MODFLOW from historical data on all nine drainage basins of the Edwards Aquifer Balcones Fault Zone San Antonio Segment - Part 3
|
Details
View
Download
|
| Title: |
Regional Water Supply Planning Study – Phase I Nueces River Basin Volume I – Executive Summary |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies. Executive Summary of 1991 water supply plan for the Nueces River Basin emphasizing construction of recharge structures (dams and reservoirs)
|
Details
View
Download
|
| Title: |
Regional Water Supply Planning Study – Phase I Nueces River Basin Volume II – Technical Report |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies. Technical study for 1991 water supply plan for the Nueces River Basin emphasizing construction of recharge structures (dams and reservoirs)
|
Details
View
Download
|
| Title: |
Regional Water Supply Planning Study – Phase I Nueces River Basin Volume III – Appendices |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies. Appendices for 1991 water supply plan for the Nueces River Basin emphasizing construction of recharge structures (dams and reservoirs)
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Enhanced Characterization and Representation of Flow through Karst Aquifers-Phase II Revision 1 |
Description:
 |
Development and testing of the MODFLOW DCM version 2.0 model for karst aquifers
|
Details
View
Download
|
| Title: |
Diversion Spring Cave |
Description:
 |
Documentation of hydrogeology, structure and fauna in Diversion Spring Cave, Hays County, TX
|
Details
View
Download
|
| Title: |
Preliminary Report of Biological Investigation – Valdina Farms Sinkhole-Medina Co., Texas |
Description:
 |
Documentation of fauna in Valdina Farms Sinkhole, Medina County, 1977
|
Details
View
Download
|
| Title: |
A preliminary report of findings for the karst terrains feature known as Rugh Cavern, located along northern Seco Creek, northwestern Medina County, Texas |
Description:
 |
Preliminary findings on Rugh Sinkhole/Cave in Seco Creek, Medina County, TX
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Well Plugging and Abandonment Study |
Description:
 |
Geophysical tests on an abandoned well to determine best method of achieving sealing of the annular space
|
Details
View
Download
|
| Title: |
Blasting Effects on Engineered Structures |
Description:
 |
Report of field study on effects of blasting charges on structure and function of nearby pipes, wells, and tanks. See accompanying appendices.
|
Details
View
Download
|
| Title: |
Blasting Effects on Engineered Structures Appendices A-G |
Description:
 |
Appendices A-G to main companion report.
|
Details
View
Download
|
| Title: |
Blasting Effects on Engineered Structures Appendices H, I ,J |
Description:
 |
Appendices H, I, J to main companion report
|
Details
View
Download
|
| Title: |
Geology and Water Quality at Selected Locations in the San Antonio Area Texas, Progress Report, 1969 |
Description:
 |
Surface geology and water quality monitoring in the San Antonio region in relation to development and most likely sources of pollution. Note: Page-size and large-format plate are at the end of the report.
|
Details
View
Download
|
| Title: |
Evapotranspiration – A Method of Disposing of Septic Tank Effluent |
Description:
 |
Feasibility study for evapotranspiration as an effective means of disposing septic tank effluent
|
Details
View
Download
|
| Title: |
Maps Showing Outcrops of the Edwards and Associated Limestones in the Principal Recharge Area of the Edwards Aquifer in Bexar County, Texas [6 maps] |
Description:
 |
Six topographic maps of the Edwards Aquifer Recharge Zone, scale 1:24,000. Camp Bullis Quadrangle, Bulverde Quadrangle, Helotes Quadrangle, Longhorn Quadrangle, Castle Hills Quadrangle, San Geronimo Quadrangle. Note: Both letter-size and full-size maps are included.
|
Details
View
Download
|
| Title: |
Structural mapping of the Edwards Aquifer in eastern and central Uvalde County, Texas, using seismic, well and outcrop data |
Description:
 |
Structural mapping of the Edwards Aquifer in eastern and central Uvalde County, Texas, using seismic, well and outcrop data. Work performed under contract with the EAA by Thomas E. Ewing, Frontera Exploration Consultants; May 24, 2005
|
Details
View
Download
|
| Title: |
Soil Gas Survey and Soil Sample Analyses of Former Gensco, Inc Site and Properties Adjacent to Taylor Slough Uvalde, Texas / Edwards Underground Water District Field Investigation July 1988 through October 1988 |
Description:
 |
Report on field study of volatile organic compound (VOC) contaminants in soil at the former Gensco, Inc site in Uvalde, TX
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| 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:
 |
Annual report for 2001 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, San Antonio Area, Texas, 1971 |
Description:
 |
Annual report for 1971 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Evaluation of Stormwater Control Techniques and Programs |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Upper Reaches of Leon Creek Watershed Frequency Analysis for Storm of June 30-July 2, 2002 Phase I |
Description:
![]() |
Analysis of runoff and peak flow from a major rainfall event June 30-July 5, 2002 in the Leon Creek Watershed, Bexar County, TX
|
Details
View
Download
|
| Title: |
Preliminary Draft of Watershed Work Plan for Watershed Protection and Flood Prevention Seco Creek Watershed Medina, Bandera and Uvalde Counties, Texas |
Description:
 |
Preliminary assessment for methods and costs of flood prevention in the Seco Creek Watershed Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Water Quality/Variable Flow Study Summary of Critical Period Sampling #1 Comal River, New Braunfels, Texas August 23-31, 2000 |
Description:
 |
Sampling activities methodologies, sample locations, and raw data for critical period monitoring on the Comal River, New Braunfels, Texas August 23-31, 2000
|
Details
View
Download
|
| Title: |
Water Quality/Variable Flow Study Summary of Critical Period Sampling #2 Comal River, New Braunfels, Texas September 7-15, 2000 |
Description:
 |
Sampling activities methodologies, sample locations, and raw data for critical period monitoring on the Comal River, New Braunfels, Texas September 7-15, 2000
|
Details
View
Download
|
| Title: |
Water Quality/Variable Flow Study Summary of Fall Quarterly Sampling Comal River, New Braunfels, Texas November 9-17, 2000 |
Description:
 |
Sampling activities methodologies, sample locations, and raw data for critical period monitoring on the Comal River, New Braunfels, Texas September 7-15, 2000
|
Details
View
Download
|
| Title: |
Water Quality/Variable Flow Study Summary of Fall Quarterly Sampling San Marcos River, San Marcos, Texas October 24-November 2, 2000 |
Description:
 |
Sampling activities methodologies, sample locations, and raw data for critical period monitoring in the San Marcos River October 24-November 2, 2000
|
Details
View
Download
|
| Title: |
Stormwater Runoff for Selected Watersheds in the Edwards Aquifer Recharge Zone, Bexar County, Texas, 1996-98 |
Description:
 |
Comparison of water quality in stormwater runoff from five watersheds in the Edwards Aquifer Balcones Fault Zone San Antonio Segment Recharge Zone
|
Details
View
Download
|
| Title: |
An Evaluation of the 1997 Edwards Aquifer Irrigation Suspension |
Description:
 |
Evaluation of Edwards Aquifer Authority’s Irrigation Suspension Program in 1997 and alternatives
|
Details
View
Download
|
| Title: |
Variable Flow Study – Seven Years of Monitoring and Applied Research |
Description:
 |
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
|
Details
View
Download
|
| Title: |
Assessment of Factors Influencing Texas Wild-Rice (Zizania texana) Sexual and Asexual Reproduction |
Description:
 |
Laboratory and field studies on critical determinants of reproduction in Texas Wild-Rice (Zizania texana)
|
Details
View
Download
|
| Title: |
Assessment of Instream Flow and Habitat Requirements for Cagle’s Map Turtle (Graptemys caglei) |
Description:
 |
Field study on population and habitat of Cagle’s Map Turtle and factors affecting them, including instream flow requirements, water quality, and benthics
|
Details
View
Download
|
| Title: |
Final Report for Deep Aquifer Biota Study of the Edwards Aquifer |
Description:
 |
Deep-aquifer biota study in five counties of the Edwards Aquifer
|
Details
View
Download
|
| Title: |
Well Sampling for Aquifer Biota |
Description:
 |
Sampling plan for studying subterranean species of the Edwards Aquifer Balcones Fault Zone San Antonio Segment
|
Details
View
Download
|
| Title: |
Evaluation of Augmentation Methodologies in Support of In-Situ Refugia at Comal and San Marcos Springs, Texas |
Description:
 |
Evaluation of different augmentation methodologies to maintain habitats in Comal and San Marcos Springs during drought conditions
|
Details
View
Download
|
| 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:
 |
Annual report for 2011 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2011 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2005 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2005 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2002 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2002 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2001 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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 Appendix C: Drop Net Raw Data |
Description:
 |
Raw drop-net data for the 2001 Annual report on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2004 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2004 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| Title: |
Comal Springs Riffle Beetle Habitat and Population Evaluation/ Final Report Variable Flow Study: Project 802, Task 13 Landa Lake, New Braunfels, Texas |
Description:
 |
Sampling of Comal Springs riffle beetle in habitat extent study during 2001-2002 |
Details
View
Download
|
| Title: |
Ecology of the Exotic Giant Rams-Horn Snail, Marisa cornuarietis, Other Biological Characteristics and a Species/Ecological Review of the Literature of the Comal Springs Ecosystem of South Central Texas |
Description:
 |
Literature research on endangered species of the Edwards Aquifer, and field and laboratory studies on the giant rams-horn snail (Marisa cornuarietis) |
Details
View
Download
|
| Title: |
Survey Report on Edwards Underground Reservoir Guadalupe, San Antonio and Nueces Rivers and Tributaries, Texas. Volume 3 Appendix III Geology Appendix V Economic Base Study Appendix VI Recreation and Wildlife |
Description:
 |
Note: This report is included for its historical value and may have been replaced by more recent studies. Volume 3 (Appendix III Geology Appendix V Economic Base Study Appendix VI Recreation and Wildlife) of survey by the US Army Corps of Engineers and the Edwards Underground Water District, emphasizing possible locations for reservoirs and containment systems.
|
Details
View
Download
|
| Title: |
Exploring Drought in the San Antonio Area Between 1700 and 1979 |
Description:
 |
Using tree rings to analyze droughts for the San Antonio area between 1700 and 1979 |
Details
View
Download
|
| Title: |
Trans-Texas Water Program West Central Study Area Phase II Guadalupe-San Antonio River Basin Environmental Criteria Refinement |
Description:
 |
Modeling, summary of biological studies, and sensitivity analyses to support refinement of environmental criteria for the Trans-Texas Water Program West Central Study Area Phase II Guadalupe-San Antonio River Basin Note: This report is included for its possible historical value but has been replaced by the Texas Water Plan.
|
Details
View
Download
|
| Title: |
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:
 |
Annual report for 2006 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2006 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2008 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2009 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2010 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2003 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2007 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2008 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2007 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2009 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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 2010 Annual Report |
Description:
 |
Annual report for 2010 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2003 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| Title: |
Executive Summary of Water Availability Study for the Guadalupe and San Antonio River Basins |
Description:
 |
Note: This paper is included for its historical value but has been replaced by more recent studies. Summary of studies on proposed reservoirs on the Guadalupe and San Antonio Rivers.
|
Details
View
Download
|
| Title: |
Comal Springs Riffle Beetle Laboratory Study Evaluation Under Variable Flow Conditions |
Description:
 |
Laboratory study of the Comal Springs Riffle beetle under varying horizonal and vertical flow conditions
|
Details
View
Download
|
| Title: |
Fountain Darter Laboratory Study Repoductive Response to Parasites and Temperature Flucuations |
Description:
 |
Laboratory study of effects of temperature fluctuations and parasites on reproduction in the fountain darter
|
Details
View
Download
|
| Title: |
Aquatic Vegetation Laboratory Study: Phase 1: Observations of water quality changes and plant growth under various flows. Phase 2: Effects of carbon dioxide level on aquatic plants found in the Comal and San Marcos Springs/River Ecosystems. Final Report Variable Flow Study: Project 802, Task 27 San Marcos National Fish Hatchery & Technology Center, San Marcos, Texas |
Description:
 |
Study on effects of changing flow rates and CO2 levels on six species of aquatic vegetation found in the Comal and San Marcos River/Springs ecosystems
|
Details
View
Download
|
| 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:
 |
Annual report for 2012 on biota study of Comal Springs/River
|
Details
View
Download
|
| 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:
 |
Annual report for 2012 on biota study of San Marcos Springs/River
|
Details
View
Download
|
| Title: |
Threatened and endangered plant and animal species of the Edwards Aquifer |
Description:
 |
Description, distribution, habitat, feeding and breeding requirements of seven species of the Edwards Aquifer listed by the United States Fish & Wildlife Service and/or Texas Parks and Wildlife Department as Threatened or Endangered as of 1995. Note: this document is included for its historical value and may have been superseded by more recent classifications and publications.
|
Details
View
Download
|
| Title: |
Final report as required by the Endangered Species Program, Texas: grant no. E-38-HP: endangered and threatened species conservation: habitat conservation planning for the development of the Edwards Aquifer Authority habitat conservation plan |
Description:
 |
Summary of progress on development of the Habitat Conservation Plan (HCP) to protect the Comal and San Marcos spring ecosystems and mitigate any incidental take of listed species that would occur as a result of low spring flows, and Environmental Impact Statement (EIS) for description of the preferred alternative
|
Details
View
Download
|
| Title: |
Habitat conservation planning for development of the Edwards Aquifer Authority Habitat Conservation Plan: grant no. E-38-HP: grant program, Section 6 habitat conservation plan planning assistance |
Description:
 |
Summary of progress to 2005 on development of the Habitat Conservation Plan (HCP) to protect the Comal and San Marcos spring ecosystems and mitigate any incidental take of listed species that would occur as a result of low spring flows, and Environmental Impact Statement (EIS) for description of the preferred alternative |
Details
View
Download
|
| Title: |
Technical Assessments in Support of the Edwards Aquifer Science Committee “J Charge” Flow Regime Evaluation for the Comal and San Marcos River Systems |
Description:
 |
Modeling for critical flow requirements to protect endangered species in the Comal and San Marcos Rivers
|
Details
View
Download
|
| Title: |
Fauna of Wells Near the Saline Water line of the Edwards Aquifer, Texas |
Description:
 |
Zara Deep Aquifer Biota Study of Fauna of Wells Near the Saline Water line of the Edwards Aquifer
|
Details
View
Download
|
| Title: |
Edwards Underground Water District, San Marcos Testing, Hays County, Texas |
Description:
 |
Archaeological test site at Spring Lake, San Marcos, TX excavated prior to more extensive water monitoring activity.
|
Details
View
Download
|
| Title: |
Records of Precipitation, Aquifer Head, and Ground-Water Recharge to the Edwards and Associated Limestones, 1960-62, San Antonio Area, Texas |
Description:
 |
Annual report for 1960-62 on precipitation, aquifer levels, and recharge to the Edwards Aquifer issued by the Edwards Underground Water District
|
Details
View
Download
|
| Title: |
Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-78 |
Description:
 |
Title page: Records of Ground-water Recharge and Discharge, 1934-78; Water Levels, 1975-78; and Chemical Quality of Water, 1977-78, for the Edwards Aquifer in the San Antonio Area, Texas. Annual hydrologic report issued by the Edwards Underground Water District.
|
Details
View
Download
|
| Title: |
Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-79. |
Description:
 |
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1934-79. Annual hydrologic report issued by the Edwards Underground Water District.
|
Details
View
Download
|
| Title: |
Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-80. |
Description:
 |
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1934-80. Annual hydrologic report issued by the Edwards Underground Water District.
|
Details
View
Download
|
| Title: |
Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-81. |
Description:
 |
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1981, with 1934-81 Summary. Annual hydrologic report issued by the Edwards Underground Water District.
|
Details
View
Download
|
| Title: |
Records of Ground-Water Recharge, Discharge, Water Levels and Chemical Quality of Water for the Edwards Aquifer in the San Antonio Area, Texas, 1934-82. |
Description:
 |
Title page: Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1982, with 1934-82 Summary. Annual hydrologic report issued by the Edwards Underground Water District.
|
Details
View
Download
|
| Title: |
Evaluation of the Option to Designate a Separate San Marcos Pool for Critical Period Management |
Description:
 |
Hydrogeologic relationships between nearby streams and rivers to springflow at San Marcos Springs
|
Details
View
Download
|
| Title: |
Simulated Impacts Associated with the Cibolo Creek Transfers Using MODFLOW-NR and Senate Bill 3 Assumptions |
Description:
 |
Tests of MODFLOW-NR and Senate Bill 3 assumptions on springflow in the Edwards Aquifer Balcones Fault Zone San Antonio Segment
|
Details
View
Download
|
| Title: |
Evaluation of the Aquifer and Springflow Impacts Associated with the Cibolo Creek Transfer Rules |
Description:
 |
Use of data and modeling to determine effects on springflow in Comal and San Marcos Springs from Cibolo Transfers (transfers of permits from Bexar to eastern counties)
|
Details
View
Download
|
| Title: |
Evaluation of the Edwards Aquifer in Kinney and Uvalde Counties, Texas |
Description:
 |
Development of an updated conceptual model in the Edwards Aquifer for the Kinney County and Uvalde Pools and the relationship of the latter to the San Antonio Pool
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Synoptic Water Level Program 1999-2004 Report |
Description:
 |
1999-2004 synoptic water level study
|
Details
View
Download
|
| Title: |
Tracing Groundwater Flowpaths in the Edwards Aquifer Recharge Zone, Panther Springs Creek Basin, Northern Bexar County, TX |
Description:
 |
Dye tracer tests in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment, Bexar County, Panther Springs Creek
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2006 |
Description:
 |
Annual report for 2006 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| Title: |
2010 Edwards Aquifer Hydrologic Data Fact Sheet for Precipitation, Groundwater Levels and Drought Conditions |
Description:
 |
Summary for 2010 on precipitation, groundwater levels, and drought in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Measuring Floodplain Hydraulics of the Frio River Where it Overlies the Edwards Aquifer |
Description:
 |
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
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Synoptic Water Level Program 2005-2009 Water Level Data |
Description:
 |
2005-2009 synoptic water level study
|
Details
View
Download
|
| Title: |
Tracing Groundwater Flowpaths in the Vicinity of San Marcos Springs, Texas |
Description:
 |
Tracer studies of the San Marcos Springs springshed from 2002 -2010
|
Details
View
Download
|
| Title: |
2011 Hydrologic Data Fact Sheet for Precipitation, Groundwater Levels and Drought Conditions |
Description:
 |
Summary for 2011 on precipitation, groundwater levels, and drought in the Edwards Aquifer San Antonio Region |
Details
View
Download
|
| Title: |
2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge |
Description:
 |
2011 Edwards Aquifer Hydrologic Data Fact Sheet for Recharge and Discharge
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrogeologic Data Report for 1999 |
Description:
 |
Annual report for 1999 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large‐format versions of the plates for this report are available at: https://www.edwardsaquifer.org/documents/2000_Esquil in‐etal_1999HydrologicData‐Plates.pdf.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 2000 |
Description:
 |
Annual report for 2000 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrogeologic Report for 2001 |
Description:
 |
Annual report for 2001 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrogeologic Report for 2002 |
Description:
 |
Annual report for 2002 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2003 |
Description:
 |
Annual report for 2003 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2004 |
Description:
 |
Annual report for 2004 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2005 |
Description:
 |
Annual report for 2005 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| Title: |
Structural Controls on the Edwards Aquifer/Trinity Aquifer Interface in the Camp Bullis Quadrangle, Texas |
Description:
 |
Structural analyses for geologic framework model of the area around the intersection of the Edwards and Trinity Aquifers
|
Details
View
Download
|
| Title: |
Conduits and Turbulent Flow in the Edwards Aquifer |
Description:
 |
Description of the Edwards Aquifer Balcones Fault Zone as a typical karst aquifer and recommendations for locations of conduits in the MODFLOW model
|
Details
View
Download
|
| 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:
 |
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
|
Details
View
Download
|
| Title: |
Geophysical Survey to Determine the Depth and Lateral Extent of the Leona Aquifer and Evaluation of Discharge Through the Leona River Floodplain, South of Uvalde, Texas |
Description:
 |
Determination of groundwater flow regime for the Leona Formation aquifer in the Leona River floodplain
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2011 |
Description:
 |
Annual report for 2011 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Helicopter Electromagnetic and Magnetic Survey Data and Maps, Seco Creek Area, Medina and Uvalde Counties, Texas |
Description:
 |
Helicopter survey of electromagnetic and magnetic properties with hydrologic application around the Valdina Farms sinkhole in Medina County, Texas
|
Details
View
Download
|
| Title: |
1983-84 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1983-84, with 1934-84 Summary |
Description:
 |
Annual report for 1983-84 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
1985 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1985, with 1934-85 Summary |
Description:
 |
Annual report for 1985 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large‐format versions of the plates for this report are available at: https://www.edwardsaquifer.org/wp-content/uploads/2019/05/1987_Ozuna-etal_1985HydrologicData.pdf. |
Details
View
Download
|
| Title: |
1986 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1986, with 1934-86 Summary |
Description:
 |
Annual report for 1986 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large-format versions of the plates for this report are available at: https://www.edwardsaquifer.org/wp-content/uploads/2019/05/1988_Ozuna-etal_1986HydrologicData.pdf
|
Details
View
Download
|
| Title: |
1987 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1987, with 1934-87 Summary |
Description:
 |
Annual report for 1987 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large-format versions of the plates for this report are available Here |
Details
View
Download
|
| Title: |
1988 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1988, with 1934-88 Summary |
Description:
 |
Annual report for 1988 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Large-format versions of the plates for this report are available at: https://www.edwardsaquifer.org/wp-content/uploads/2019/05/1989_Nalley_1988HydrologicData.pdf.
|
Details
View
Download
|
| Title: |
1989 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1989, with 1934-89 Summary |
Description:
 |
Annual report for 1989 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
1990 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1990, with 1934-90 Summary |
Description:
 |
Annual report for 1990 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
1991 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1991, with 1934-91 Summary |
Description:
 |
Annual report for 1991 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Status Report for 1992 |
Description:
 |
Annual report for 1992 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
1994 Review and Update of the Position of the Edwards Aquifer Freshwater/Saline-Water Interface from Uvalde to Kyle, Texas |
Description:
 |
1994 attempt to describe the location of the freshwater/saline-water interface accurately from Kyle to Uvalde, Texas
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1995 |
Description:
 |
Annual report for 1995 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1998 |
Description:
 |
Annual report for 1998 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Defining the Edwards Aquifer Freshwater/Saline-Water Interface with Geophysical Logs and Measured Data (San Antonio to Kyle, Texas) |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer Outcrop, Comal County, Texas |
Description:
 |
Geologic and hydrogeologic description of the karstic limestone outcrops of the Edwards Aquifer Recharge Zone in Comal County, TX
|
Details
View
Download
|
| Title: |
Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer Outcrop, Hays County, Texas |
Description:
 |
Geologic and hydrogeologic description of the karstic limestone outcrops of the Edwards Aquifer Recharge Zone in Comal County, TX
|
Details
View
Download
|
| Title: |
Hydrogeologic Framework and Geochemistry of the Edwards Aquifer Saline-Water Zone, South-Central Texas |
Description:
 |
Geochemical study of the Edwards Aquifer saline zone in relation to location of downdip and geological faults
|
Details
View
Download
|
| Title: |
Investigation of the Fresh/Saline Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas Executive Summary |
Description:
 |
Attempts to define the freshwater/saline water boundary and its movement in the New Braunfels/San Marcos area from monitoring well data.
|
Details
View
Download
|
| Title: |
Regional Distribution of Permeability in the Edwards Aquifer |
Description:
 |
Quantitative distribution of various factors controlling permeability and analysis of geographic and geologic relationships in the Edwards aquifer. Note: Large-format versions of the plates for this report are available in a companion document.
|
Details
View
Download
|
| Title: |
San Antonio and Bexar County, Texas Report on Reclamation and Re-Use of Municipal Wastewater |
Description:
 |
Feasibility study on possible uses of reclaimed wastewater in Bexar and Medina Counties and impact on withdrawal from and recharge to the Edwards Aquifer Note: This report is included for its historical value and may have been superseded by more recent studies.
|
Details
View
Download
|
| Title: |
The Edwards Aquifer Extremely Productive, but… |
Description:
 |
Semi-technical description of the Edwards aquifer and considerations for its use and preservation for the general public and policy-makers
|
Details
View
Download
|
| Title: |
Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas) |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Edwards/Glen Rose Hydrologic Communication, San Antonio Region, Texas |
Description:
 |
Hydrogeological and modeling study of transmissivity between the Glen Rose and Edwards aquifers in the Cibolo Creek Basin and Guadalupe River
|
Details
View
Download
|
| Title: |
Medina Lake Hydrology Study |
Description:
 |
Hydrologic and hydraulic analyses for the Medina Lake and Medina Diversion Lake reservoir system
|
Details
View
Download
|
| Title: |
Proposed 10-Year Plan for Continuation of Hydrologic Studies of the Edwards Aquifer, San Antonio Area, Texas |
Description:
 |
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
|
Details
View
Download
|
| Title: |
Report on the Edwards Aquifer San Antonio Region, Texas |
Description:
 |
Review of geology, hydrogeology, recharge and pumpage of the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment Note: This report is included for its historical value and may have been replaced by more recent studies.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Storage Assessment, Kinney County to Hays County, Texas |
Description:
 |
Core- and log-based stratigraphic study of permeability, porosity and storativity in the Edwards Aquifer
|
Details
View
Download
|
| Title: |
Hydrologic Investigations of the Edwards and Associated Limestones in the San Antonio Area, Texas Progress Report, 1970-71 |
Description:
 |
Summary of hydrochemical studies done on the Edwards Aquifer by the US Geological Survey for the Edwards Underground Water District in fiscal year 1971
|
Details
View
Download
|
| Title: |
Regional Specific Yield of the Edwards and Associated Limestones in the San Antonio, Texas Area |
Description:
 |
Regional specific yield of the San Antonio Segment of the Edwards Aquifer for 1958-1966
|
Details
View
Download
|
| Title: |
A Statistical Study of the Hydrological Character of the Edwards Aquifer |
Description:
 |
Statistical analysis of surface and groundwater levels from October 1998 storm event
|
Details
View
Download
|
| Title: |
Edwards Aquifer Parameter Estimation Project: Final Report |
Description:
 |
Revision 3 of the hydraulic conductivity model using spatial statistics and various hydrological data calibrated to steady-state hydraulic head measurements and partially calibrated to steady-state spring discharges, for manual calibration of the model and as a basis for fully automated calibrations. This study is included for historical value and may have been supplanted by more recent ones.
|
Details
View
Download
|
| Title: |
Conceptualization and Simulation of the Edwards Aquifer, San Antonio Region, Texas |
Description:
 |
A new ground-flow model for the San Antonio and Barton Springs segments in the San Antonio region. Note: this document is included for its historical value and may have been replace by more recent updates.
|
Details
View
Download
|
| Title: |
Valdina Farms Sinkhole: Hydrogeologic & Biologic Evaluation |
Description:
 |
Documentation of hydrogeology, structure and fauna in Valdina Farms Sinkhole, Medina County, in 1987
|
Details
View
Download
|
| Title: |
South Medina County Observation Well Project |
Description:
 |
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
|
Details
View
Download
|
| Title: |
Records of Wells and Springs, San Antonio Area, Texas |
Description:
 |
Records of wells and springs in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment, 1956-1968
|
Details
View
Download
|
| Title: |
Geochemical and Isotopic Analyses of Waters Associated with the Edwards Limestone Aquifer, Central Texas |
Description:
 |
Inorganic chemical analyses of various Edwards Aquifer samples circa 1976 using new field methods
|
Details
View
Download
|
| Title: |
File Memorandum on Review of Water Quality Changes in Edwards Reservoir-Especially Near the Bad Water Line |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Drilling, Construction and Testing of Monitor Wells for the Edwards Aquifer Bad Water Line Experiment |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Statistical Analysis of Water-Level, Springflow and Streamflow Data for the Edwards Aquifer in South-Central Texas |
Description:
 |
Development of data-based simple and multiple linear regression equations for estimating water levels, springflow and streamflow in the San Antonio region of the Edwards Aquifer
|
Details
View
Download
|
| Title: |
Hydrogeologic Data from a Study of the Freshwater Zone/Salinewater Zone Interface in the Edwards Aquifer, San Antonio Region, Texas |
Description:
 |
Initial hydrogeological study of the freshwater/saline water boundary and potential for saltwater intrusion in the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment
|
Details
View
Download
|
| Title: |
Potential for Updip Movement of Salinewater in the Edwards Aquifer, San Antonio, Texas |
Description:
 |
Modeling the shift of the freshwater-saline water interface under various conditions over a 10-year period
|
Details
View
Download
|
| Title: |
Evaluation of Acoustic Doppler Velocity Meters to Quantify Flow from Comal Springs and San Marcos Springs, Texas |
Description:
 |
Evaluation of acoustic Doppler velocity meters (ADVMs) in relation to stream gages to quantify flow from Comal and San Marcos Springs
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1993 |
Description:
 |
Annual report for 1993 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Environmental Tritium in the Edwards Aquifer Central Texas 1963-71 |
Description:
 |
Analysis of tritium in 50 wells and springs in the San Antonio area
|
Details
View
Download
|
| Title: |
Edwards Aquifer Ground-Water Divides Assessment, San Antonio Region, Texas |
Description:
 |
Hydrogeologic study on location of groundwater divides in Hays and Kinney Counties
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1994 |
Description:
 |
Annual report for 1994 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Investigation of the Fresh/Saline Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas – Appendices |
Description:
 |
Attempts to define the freshwater/saline water boundary and its movement in the New Braunfels/San Marcos area from monitoring well data - Appendices
|
Details
View
Download
|
| Title: |
Analysis of Data from Test-Well Sites along the Downdip Limit of Freshwater in the Edwards Aquifer, San Antonio, Texas, 1985-87 |
Description:
 |
Geochemical and hydrochemical study of the Edwards Aquifer downdip area and saline-freshwater interface in the San Antonio area
|
Details
View
Download
|
| Title: |
Bad Water Line Transect Pumping Test at San Antonio City Water Board’s Artesia Station, March 25, 1987 |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Investigation of the Fresh/Saline Water Interface in the Edwards Aquifer in New Braunfels and San Marcos, Texas – Report |
Description:
 |
Attempts to define the freshwater/saline water boundary and its movement in the New Braunfels/San Marcos area from monitoring well data - Report
|
Details
View
Download
|
| Title: |
Carbonate Geology and Hydrology of the Edwards Aquifer in the San Antonio Area, Texas |
Description:
 |
Hydrostratigraphic subdivisions, types of rock, permeability and groundwater movement in the Edwards Aquifer in the San Antonio region
|
Details
View
Download
|
| Title: |
Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer Outcrop, Medina County, Texas |
Description:
 |
Geologic and hydrogeologic description of the karstic limestone outcrops of the Edwards Aquifer Recharge Zone in Medina County, TX
|
Details
View
Download
|
| Title: |
Geologic Framework and Hydrogeologic Characteristics of the Edwards Aquifer, Uvalde County, Texas |
Description:
 |
Geology and hydrogeology of the Edwards Aquifer in Uvalde County, TX
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Aquifer Science Research Program Plan 2008-2013 |
Description:
 |
Edwards Aquifer Authority Aquifer Science Research Program Plan for 2008-2013
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| Title: |
Groundwater Level Monitoring Plan |
Description:
 |
Guidance for collecting groundwater data by the Edwards Aquifer Authority
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Groundwater Management Plan 1998-2008 |
Description:
 |
Groundwater management plan for the Edwards Aquifer Authority for 1998-2008 Note: This report is included for its historical value but has been replaced by a more recent study.
|
Details
View
Download
|
| Title: |
Helicopter Electromagnetic and Magnetic Survey Data and Maps, Northern Bexar County, Texas |
Description:
 |
Helicopter survey of electromagnetic and magnetic properties with hydrologic application around Northern Bexar County, TX
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Summary for 2007 |
Description:
 |
2007 hydrologic data summary
|
Details
View
Download
|
| Title: |
Evaluation of Alternative Instream and Bay and Estuary Flow Criteria for Run-of-the-River Diversions / Technical Memorandum |
Description:
 |
Discussion of various concepts for a second generation of environmental flow criteria for the Guadalupe - San Antonio River Basin to be used in the Trans-Texas Water Program
|
Details
View
Download
|
| Title: |
Methodology for Calculating Specific-Storage Values in the Edwards (Balcones Fault Zone) Aquifer, Central Texas, Using Seismic Efficiencies |
Description:
 |
Description of a method to estimate storativity of the Edwards Aquifer, Balcones Fault Zone, San Antonio Segment based on seismic efficiency calculations (transient changes in hydrodynamic pressure after seismic events)
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2007 |
Description:
 |
Annual report for 2007 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2008 |
Description:
 |
Annual report for 2008 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2009 |
Description:
 |
Annual report for 2009 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2010 |
Description:
 |
Annual report for 2010 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
A Lumped Parameter Model for the Edwards Aquifer |
Description:
 |
Computer modeling of the San Antonio region of the Edwards Aquifer using a nonlinear optimization algorithm with a Kalman filter
|
Details
View
Download
|
| Title: |
Structural Controls on the Edwards Aquifer/Trinity Aquifer Interface in the Helotes Quadrangle, Texas |
Description:
 |
Structural analyses for geologic framework model of the Helotes Quadrangle around the intersection of the Edwards and Trinity Aquifers
|
Details
View
Download
|
| 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
|
Details
View
Download
|
| Title: |
1988 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1988, with 1934-88 Summary – Plates |
Description:
 |
Plates from 1988 annual report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Original size plates - need large-format printer.
|
Details
View
Download
|
| Title: |
1989 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1989, with 1934-89 Summary – Plates |
Description:
 |
Plates from 1989 annual report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Original size plates - need large-format printer.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrogeologic Data Report for 1999 – Plates |
Description:
 |
High-resolution fulll-size plates from "Edwards Aquifer Authority Hydrogeologic Data Report for 1999". Note: large-format printer required.
|
Details
View
Download
|
| Title: |
1985 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1985, with 1934-85 Summary – Plates |
Description:
 |
Full-size plates for annual report for 1985 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Requires large-format printer.
|
Details
View
Download
|
| Title: |
1986 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1986, with 1934-86 Summary – Plates |
Description:
 |
Plates from annual report for 1986 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Requires large-format printer.
|
Details
View
Download
|
| Title: |
1987 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1987, with 1934-87 Summary – Plates |
Description:
 |
Plates from annual report for 1987 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region. Note: Requires large-format printer.
|
Details
View
Download
|
| Title: |
Defining the Edwards Aquifer Freshwater/Saline-Water Interface with Geophysical Logs and Measured Data (San Antonio to Kyle, Texas) – Plates |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Helicopter Electromagnetic and Magnetic Survey Data and Maps, Seco Creek Area, Medina and Uvalde Counties, Texas – Plate |
Description:
 |
Full-size plate for "Helicopter Electromagnetic and Magnetic Survey Data and Maps, Seco Creek Area, Medina and Uvalde Counties, Texas". Note: Original size plate - need large-format printer.
|
Details
View
Download
|
| Title: |
Government Canyon Geologic and Hydrologic Assessment |
Description:
 |
Government Canyon geologic and hydrologic assessment
|
Details
View
Download
|
| Title: |
Regional Distribution of Permeability in the Edwards Aquifer – Plates |
Description:
 |
Large-format versions of the plates for Regional Distribution of Permeability in the Edwards Aquifer. See companion document.
|
Details
View
Download
|
| 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:
 |
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.
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Water resources of the Edwards Aquifer Region [Infographic] |
Description:
 |
Infographic and map showing structure, discharge and recharge of the Edwards Aquifer. Scale ca. 1:500,000. Note: contains both letter-size and large-format versions.
|
Details
View
Download
|
| Title: |
Suggested Design and Construction of Edwards Aquifer Wells |
Description:
 |
Guide for domestic well owners. Note: This document is included for historical interest and may have been replaced by more recent guidelines.
|
Details
View
Download
|
| 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:
 |
Fact Sheet companion document to full report of the same name.
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2012 / Report No. 13-01 |
Description:
 |
Annual report for 2012 on recharge, discharge, precipitation, water levels and water quality in the Edwards Aquifer Balcones Fault Zone San Antonio Segment
|
Details
View
Download
|
| Title: |
The Edwards Underground Reservoir and the Edwards Underground Water District: Uvalde, Medina, Bexar, Comal and Hays Counties |
Description:
 |
General description of the Edwards Aquifer and the Edwards Underground Water District. Note: No cover page. This document is included for its historical value and has been replaced by more recent ones.
|
Details
View
Download
|
| Title: |
1990 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1990, with 1934-90 Summary-Plates |
Description:
 |
Large-format plates for the 1990 Hydrologic Data Report - see companion document.
|
Details
View
Download
|
| Title: |
1991 Hydrologic Data Report – Compilation of Hydrologic Data for the Edwards Aquifer, San Antonio Area, Texas, 1991, with 1934-91 Summary-Plates |
Description:
 |
Large-format plates for the 1991 Hydrologic Data Report. See companion document.
|
Details
View
Download
|
| Title: |
1994 Review and Update of the Position of the Edwards Aquifer Freshwater/Saline-Water Interface from Uvalde to Kyle, Texas-Plates |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1996 |
Description:
 |
Annual report for 1996 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1996-Plates |
Description:
 |
Large-format plates for Edwards Aquifer Hydrogeologic Report for 1996. See companion document.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1997-Plates |
Description:
 |
Large-format plates for Edwards Aquifer Hydrogeologic Report for 1997. See companion document.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Hydrogeologic Report for 1997 |
Description:
 |
Annual report for 1997 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Underground Water District |
Description:
 |
General description of the Edwards Aquifer, and the mission and functions of the Edwards Underground Water District. Note: this document has been included for historical value.
|
Details
View
Download
|
| Title: |
The Edwards Underground Reservoir and the Edwards Underground Water District |
Description:
 |
General description of the Edwards Aquifer and current concerns and acts of regulatory agencies in 1975. This document is included for its historical value and information may no longer be current. |
Details
View
Download
|
| Title: |
Aquifer Science Research Program Plan: 2006-2011 |
Description:
 |
Edwards Aquifer Authority Aquifer Science Research Program Plan for 2006-2011
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Aquifer Science Research Program Plan 2012-2015 |
Description:
 |
Edwards Aquifer Authority Aquifer Science Research Program Plan for 2012-2015
|
Details
View
Download
|
| Title: |
Water Quality Trends Analysis of the San Antonio Segment, Balcones Fault Zone Edwards Aquifer, Texas |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
Appendix C of Edwards Aquifer Authority Hydrologic Data Report for 2013 |
Description:
 |
Appendix C of annual report for 2013 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2013 |
Description:
 |
Annual report for 2013 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2014 |
Description:
 |
Annual report for 2014 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| Title: |
Tracing Groundwater Flowpaths in Kinney County, Texas |
Description:
 |
This report presents the findings of a groundwater flowpath investigation in Kinney County, Texas, performed by the Edwards Aquifer Authority between 2007 and 2012.
|
Details
View
Download
|
| 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.
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2015 – Groundwater |
Description:
 |
Annual report for 2015 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Authority Hydrologic Data Report for 2015 – Precipitation |
Description:
 |
Annual report for 2015 on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
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
|
Details
View
Download
|
| Title: |
Re-Conceptualizing the Edwards Aquifer Authority Recharge Program: Staff Recommendations to Optimize and Protect the Edwards Aquifer |
Description:
 |
Recharge is defined in the EAA Act as: Increasing the supply of water to the aquifer by naturally occurring channels or artificial means. Based on this definition, the EAA recharge program previously consisted of four recharge dams initially sponsored by the EUWD and Medina County Commissioners Court until calendar year 2004, when participation in the regional Precipitation Enhancement Program (PEP) was added to the program.
|
Details
View
Download
|
| Title: |
Field and Laboratory Tests of Passive Sampling Techniques |
Description:
 |
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.
|
Details
View
Download
|
| Title: |
EAA 2016 Water Quality Summary |
Description:
 |
Water Quality Summary from 2016 Hydrologic Data Report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
EAA Hydrologic Data Report 2016 Recharge |
Description:
 |
Hydrologic Data Report 2016 Recharge from 2016 Hydrologic Data Report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
EAA Hydrologic Data Report 2016 Discharge |
Description:
 |
Hydrologic Data Report 2016 Discharge from 2016 Hydrologic Data Report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
EAA 2016 Precipitation in the Edwards Aquifer Region |
Description:
 |
Precipitation in the Edwards Aquifer Region from 2016 Hydrologic Data Report on recharge, discharge, water levels and water quality in the Edwards Aquifer San Antonio Region
|
Details
View
Download
|
| Title: |
Edwards Aquifer Precipitation Enhancement Program Final Report 1999 |
Description:
 |
Summary of the Edwards Aquifer Precipitation Enhancement Program for 1999
|
Details
View
Download
|
| Title: |
Edwards Aquifer Precipitation Enhancement Program Final Report 2000 |
Description:
 |
Summary of the Edwards Aquifer Precipitation Enhancement Program for 2000 |
Details
View
Download
|
| Title: |
Operations Report on a Cloud Seeding Program for the Edwards Underground Water District NAWC WM-86-6 |
Description:
 |
Summary of the weather modification program by North American Weather Consultants for the Edwards Underground Water District in 1986
|
Details
View
Download
|
| Title: |
Assessment of the Effect of Cloud Seeding in the Edwards Aquifer Target During the 1999, 2000 and 2001 Seasons |
Description:
 |
Assessment of the weather modification program by the Edwards Aquifer Authority for the 1999 – 2001 seasons
|
Details
View
Download
|
| Title: |
Final Report-2002/A Weather Resources Management Program/A Summary of Cloud Seeding Activities Conducted over Six Counties in South Texas During the Period 15 March-15 November 2002 |
Description:
 |
Report on rain enhancement by the Southwest Texas Rain Enhancement Association for 2002
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2003 EAA Final Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2003 in Uvalde County
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2004 Edwards Aquifer Authority Final Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2004 in Uvalde County
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2005 Edwards Aquifer Authority Final Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2005 in Uvalde and Medina Counties
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2006 Edwards Aquifer Authority Final Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2006 in Uvalde, Medina and Bandera Counties
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2007 Edwards Aquifer Authority Final Report |
Description:
![]() |
Report of the Edwards Aquifer Authority weather modification program for 2007 in Uvalde County
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2008 Edwards Aquifer Authority Final Report |
Description:
 |
Weather modification program by Southwest Texas Rain Enhancement Association for the Edwards Aquifer Authority in 2008
|
Details
View
Download
|
| Title: |
Southwest Texas Rain Enhancement Association 2009 Edwards Aquifer Authority Final Report |
Description:
 |
Weather modification program by Southwest Texas Rain Enhancement Association for the Edwards Aquifer Authority in 2009
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association 2002 Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2002
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association EAA Target Area 2003 Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2003
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association Edwards Aquifer Authority Target Area 2004 Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2004
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association Edwards Aquifer Authority Target Area 2005 Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2005
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association Edwards Aquifer Authority Target Area 2006 Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2006
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association Edwards Aquifer Authority Target Area 2007 Report |
Description:
 |
Report of the Edwards Aquifer Authority weather modification program for 2007 |
Details
View
Download
|
| Title: |
South Texas Weather Modification Association Edwards Aquifer Authority Target Area 2008 Report |
Description:
 |
Weather modification program by South Texas Weather Modification Association for the Edwards Aquifer Authority in 2008
|
Details
View
Download
|
| Title: |
South Texas Weather Modification Association Edwards Aquifer Authority Target Area 2009 Report |
Description:
 |
Weather modification program by South Texas Weather Modification Association for the Edwards Aquifer Authority in 2009 |
Details
View
Download
|
| Title: |
Edwards Aquifer Precipitation Enhancement Program Final Report 2001 |
Description:
 |
Summary of the Edwards Aquifer Precipitation Enhancement Program for 2001 |
Details
View
Download
|
| 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 |
Details
View
Download
|
