BRACS Documents

The links below provide access to our BRACS-related publications.

Study Reports

Except where noted, all of the information provided is believed to be accurate and reliable; however, TWDB assumes no responsibility for any errors. Further, TWDB assumes no responsibility for the use of the information provided. PLEASE NOTE that users of these data are responsible for checking the accuracy, completeness, currency and/or suitability of all information themselves. TWDB makes no guarantees or warranties as to the accuracy, completeness, currency, or suitability of the information provided via the BRACS Database. TWDB specifically disclaims any and all liability for any claims or damages that may result from providing BRACS data or the information it contains.

 

Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas September 2014 | John E. Meyer, P.G., Andrea Croskrey, Matthew R. Wise, P.G., and Sanjeev Kalaswad, Ph.D., P.G.

The report presents information on the brackish groundwater resources of the Gulf Coast Aquifer in the Lower Rio Grande Valley, Texas, within Cameron, Hidalgo, Willacy, and eastern Starr counties. The study area contains approximately 40 million acre feet of slightly saline groundwater (1,000 to 3,000 milligrams per liter total dissolved solids), 112 million acre-feet of moderately saline groundwater (3,000 to 10,000 milligrams per liter total dissolved solids), and 123 million acre-feet of very saline groundwater (10,000 to 35,000 milligrams per liter total dissolved solids).


Queen City and Sparta Aquifers, Atascosa and McMullen Counties, Texas: Structure and Brackish Groundwater May 2014 | Matthew R. Wise, TWDB

The report presents information on the Queen City and Sparta aquifers within Atascosa and McMullen counties. The Sparta Aquifer contains approximately 8,880,000 acre-feet of brackish groundwater (1,000 to 10,000 mg/L total dissolved solids) and the Queen City Aquifer holds approximately 49,380,000 acre-feet of brackish groundwater in the project area.


Pecos Valley Aquifer, West Texas: Structure and Brackish Groundwater September 2011 | John E. Meyer, Matthew R. Wise, and Sanjeev Kalaswad, TWDB

The report presents information on the geological structure of the Pecos Valley Aquifer and underlying geological units in West Texas and on the characteristics of the Pecos Valley Aquifer. The study estimates that 85 million acre-feet of brackish groundwater (1,000 to 10,000 mg/L) is present in the Pecos Valley Aquifer. Although brackish water is present almost everywhere, it appears to be more prevalent in the central and western parts of the aquifer. These are also areas where the saturated thickness of the aquifer is the greatest.

Contract Reports

Identification of Potential Brackish Groundwater Production Areas - Gulf Coast Aquifer September 2016 | Steve C. Young, Ph.D., P.G., P.E., Marius Jigmond, Neil Deeds, Ph.D., P.E., Joan Blainey, Ph.D., P.G., INTERA, Inc.

The project conducted by INTERA, Inc. delineated groundwater salinity zones in the Gulf Coast Aquifer, calculated volumes of those waters, and identified potential brackish groundwater production areas. The project produced an interpretation of top and bottom salinity zones surfaces in three dimensions and simple groundwater model of potential production areas.

Brackish Groundwater in the Blaine Aquifer System September 2016 | Steven T. Finch, P.G., Allan R. Standen, P.G., T. Neil Blandford, P.G., INTERA, Inc.

The project conducted by Daniel B. Stevens & Associates, Inc. characterized the geology of the Blaine Aquifer system, delineated groundwater salinity zones, calculated the volumes of those waters, identified potential brackish groundwater production areas, and estimated 30- and 50-year production volumes without causing significant impact to water quality or water quantity in the area. The Blaine aquifer is a prominent water source for domestic and industrial uses.

Identification of Potential Brackish Groundwater Production Areas - Rustler Aquifer September 2016 | Daniel Lupton, P.G., Van Kelley, P.G., Joan Blainey, Ph.D., P.G., INTERA, Inc.

The project conducted by INTERA, Inc.delineates groundwater salinity zones in the Rustler Aquifer, calculates the volumes of those waters, and identifies potential brackish groundwater production areas. The project estimates that the Rustler Aquifer contains 18.5 million acre-feet of groundwater of which 88,000 acre-feet is fresh water, 10 million acre-feet is slightly saline water, 8 million acre-feet is moderately saline water, and 373,000 acre-feet is very saline water. Five potential brackish groundwater production areas and six exclusion zones were identified. A sensitivity analysis using 11 hypothetical well fields and a range of parameter values resulted in modeled drawdown tables for each potential production area. Additionally, new well logs and stratigraphic interpretations allowed for the division of the aquifer into three water bearing units and a sensitivity analysis on logging parameters provided a set of 26 key wells for calculating water quality in the Rustler Aquifer.

Assessment of Groundwater Modeling Approaches for Brackish Aquifers November 2011 | Neil E. Deeds, Ph.D., P.E. and Toya L. Jones, P.G., INTERA, Inc.

The study conducted by INTERA provides guidance for selecting appropriate groundwater codes for simulating brackish aquifers, including variable density effects. With the help of a literature review and a high-level analysis of the hydrogeologic features of the brackish water aquifers in Texas, a spreadsheet-based decision matrix was developed to inform the selection procedure of a groundwater modeling code. With the background information provided in this work, and the straightforward code ranking approach, a modeler should be able to make an informed decision about choosing a code for brackish water resources problems.

Aquifer Code Selection Tool (to accompany the Assessment of Groundwater Modeling Approaches for Brackish Aquifers report), Zipped MS Excel 2007 (137 KB)


Aquifers of Texas Bibliography to Support the Brackish Resources Aquifer Characterization System (BRACS) Program November 2011 | Steve Young, Ph.D., P.E., P.G. and Bridget Ronayne, INTERA, Inc.

To support the BRACS program, INTERA assembled a bibliography for the major and minor aquifers of Texas. Approximately 7,800 references were compiled from existing bibliographies developed for the Groundwater Availability Model (GAM) Program and other relevant literature published in journals, books, conference proceedings, government agency reports, theses and dissertations, journals, scientific magazines, and abstracts. The bibliography includes references to works on geology, geophysics, geochemistry, hydrology, and other pertinent topics that are relevant to the goals of BRACS. The bibliography was developed in EndNote® and as a Microsoft Access database.

Database: Aquifers of Texas Bibliography, Zipped MS Access 2007 (1.6 MB, Last updated: November 1, 2011)

Presentations

2016

Leading National Efforts in Mapping Brackish Aquifers, 4.1 MB
Nathaniel van Oort, TWDB | Texas Desal Conference, Austin, Texas, September 26, 2016

Update on House Bill 30 Studies, 0.6 MB
Andrea Croskrey, P.G., TWDB | 2016 Texas Groundwater Summit, San Marcos, Texas, August 25, 2016

Texas' Brackish Resources Aquifer Characterization System, 14.4 MB
Andrea Croskrey, P.G., TWDB | 2016 American Association of Petroleum Geologists Southwest Section Convention, Abilene, Texas, April 11-12, 2016

2015

Techniques for Mapping and Characterizing Brackish Aquifers through the Mining of Existing Geophysical Data, 25.3 MB
Andrea Croskrey, P.G., TWDB | National Groundwater Association Groundwater Summit, San Marcos, Texas, March 17, 2015

2014

Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas, 16.2 MB
John Meyer, P.G., TWDB | Rio Grande Regional Water Planning meeting, Wesalco, Texas, December 10, 2014

Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas, 17.2 MB
John Meyer, P.G., TWDB | 3rd Rio Grande Valley Water Awarness Summit, Wesalco, Texas, December 5, 2014

Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas, 19.5 MB
John Meyer, P.G., TWDB | Rio Grand Regiona Water Authority, Wesalco, Texas, December 3, 2014

Brackish Groundwater Characterization, 6.2 MB
John Meyer, P.G., TWDB | Texas Desal Conference, Austin, Texas, September 12, 2014

Queen City and Sparta aquifers in Atascosa and McMullen Counties, Texas, 7.1 MB
Matthew Wise, P.G., TWDB | Evergreen Groundwater Conservation District, Pleasanton, Texas, August 19, 2014

Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas, 5.5 MB
John Meyer, P.G., TWDB | Texas Alliance of Groundwater Districts, Austin, Texas, August 27, 2014

Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas, 19.4 MB
Sanjeev Kalaswad, Ph.D., P.G. and John Meyer, P.G., TWDB | Rio Grande Regional Water Authority, Wesalco, Texas, July 2, 2014

Brackish Groundwater Characterization, 12.8 MB
John Meyer, P.G., TWDB | Texas Aquifer Conference, Austin, Texas, June 2, 2014

Brackish Groundwater Characterization, 8.9 MB
John Meyer, P.G., TWDB | Texas Water Summit, Austin, Texas, May 19, 2014

Role of BRACS in the State Water Plan, 4.5 MB
Matthew Wise, P.G., TWDB | Texas A&M American Water Resources Association, College Station, Texas, February 20, 2014

Geologic Characterization for the Corpus Christi Aquifer Storage and Recovery Conservation District, 10.4 MB
John Meyer, P.G., TWDB | Corpus Christi Aquifer Storage and Recovery Conservation District, Corpus Christi, Texas, January 24, 2014

2013

Brackish Groundwater Characterization Southern Midland Basin Proposal West Texas, 6.9 MB
John Meyer, P.G., TWDB | Conference, Midland, Texas, September 11, 2013

Brackish Groundwater Characterization, 13.0 MB
John Meyer, P.G., TWDB | Texas Alliance Groundwater Districts, Austin, Texas, May 30, 2013

Water Desalination in Texas, 31.8 MB
Jorge Arroyo, P.E., TWDB | Independent Water and Sewer Companies of Texas, Inc., City, Texas, May 10, 2013

Brackish Groundwater Characterization Carrizo-Wilcox and overlying aquifers Central Texas, 9.4MB
John Meyer, P.G., TWDB | Conference, City, Texas, May 6, 2013

2012

Geologic Characterization of the Corpus Christi Aquifer Storage and Recovery Conservation District, 8.0 MB
John Meyer, P.G., TWDB | Corpus Christi Aquifer Storage and Recovery Conservation District, Corpus Christi, Texas, July 12, 2012

Brackish Groundwater Characterization, 4.4 MB
Matthew Wise, P.G., TWDB | Permian Basin Environmental Regulatory Seminar, Midland, Texas, May 31, 2012

TWDB's Integrated Approach to Brackish Groundwater Desalination, 1.7 MB
Matthew Wise, P.G., TWDB | National Groundwater Association Conference on Emerging Issues in Groundwater, San Antonio, Texas, February 27, 2012

Geologic Characterization of the Corpus Christi Aquifer Storage and Recovery Conservation District, 8.0 MB
John Meyer, P.G., TWDB | Groundwater Protection Council, Austin, Texas, January 24, 2012

2011

Brackish Resources Aquifer Characterization System, 8.2 MB
John Meyer, P.G., TWDB | San Antonio Water System, San Antonio, Texas, December 13, 2011

Brackish Resources Aquifer Characterization System, 6.9 MB
John Meyer, P.G., TWDB | Texas Commission on Environmental Quality, Austin, Texas, August 2, 2011

BRACS: Mapping and Characterizing Texas' Brackish Aquifers, 2.1 MB
John Meyer, P.G., TWDB | Ground Water Summit and Ground Water Protection Council Meeting, Baltimore, Maryland, May 4, 2011

Brackish Resources Aquifer Characterization System, 7.5 MB
John Meyer, P.G., TWDB | Austin Geological Society, Austin, Texas, April 4, 2011

Brackish Groundwater Desalination in Texas, 2.8 MB
Kevin Ward., TWDB | Multi-State Salintiy Coalition Summit, San Antonio, Texas, February 17, 2011

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