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Texas Water
Development Board

BRACS studies

BRACS studies can be conducted in-house by BRACS staff or externally by a consulting firm under contract with TWDB and staff member managing the contract. A study typically consists of:

  • evaluating publically available water well records, geophysical well logs, and geologic reports,
  • entering information into the BRACS Database,
  • comparing top, bottom, and lateral extent of water-bearing geologic formations,
  • interpolating data points from BRACS Database to build new formation structures,
  • mapping the water-bearing portions of the aquifer and their hydraulic properties,
  • estimating salinity from water well records and geophysical well logs,
  • estimating volumes of brackish groundwater,
  • preparing geographic information system files, and
  • writing a report summarizing findings.

BRACS Studies Status Map

BRACS Future Aquifers Map

Current Studies

AquiferTypeTotal CostKeywords
Yegua-Jackson AquiferContract-Brackish, Groundwater
Ellenburger-San Saba and Hickory aquifersContract-Brackish, Groundwater
Brackish Groundwater Exploratory ProjectContract-Brackish, Groundwater
Yegua-Jackson Seismic InterpretationContract$224,962.50Brackish, Groundwater, Aquifers
Woodbine aquiferIn-house-Brackish, Groundwater, Aquifers
Edwards-Trinity (Plateau) aquiferIn-house-Brackish, Groundwater, Aquifers
Dockum AquiferIn-house-Brackish, Groundwater, Aquifers

Future Studies

AquiferTypeTotal CostKeywords
Queen City and Carrizo-Wilcox aquifers - East TexasIn-house-Brackish, Groundwater, Aquifers

Completed Studies

Complete DateProject NameContract/Report NumberContractorFunding
7/2025Edwards-Trinity (Plateau) Aquifer 2D seismic study2300012710-1INTERA, Inc.
$356,515
2/2025Maverick Basin aquifer report2300012710-2INTERA, Inc.
$61,981
8/2024Core Analyses for Various Aquifers2348302708LRE Water, LLC
$175,000
9/2023Core Testing and Numerical Simulation of Well Logs for the Upper Coastal Plains and Llano Uplift Aquifers2248302663UT Austin, Hildebrand Department of Petroleum and Geosystems Engineering
$130,000
8/2023Sparta Aquifer, East Texas390In-house-
9/2022Hill Country Trinity Aquifer and Trinity Group Formations388In-house-
2/2022Develop Procedures and Tools to Delineate Areas Designated or Used for Class II Well Wastewater Injectate2000012453WSP USA
$500,000
1/2022Sampling of High Salinity Groundwater in Texas2000012445U.S. Geological Survey
$222,300
1/2022Data Entry for Upper Coastal Plain East Aquifers2000012440Allan R. Standen, LLC
$226,000
1/2022Core Testing for Hill Country Trinity Aquifer2000012440Allan R. Standen, LLC
$219,710
8/2021Brackish Groundwater Comingling2000012442INTERA, Inc.
$137,700
8/2021Seismic Interpretation2000012442INTERA, Inc.
$150,000
8/2021Drilling and Logging Ideal Well2000012441Daniel B. Stephens & Associates, Inc.
$135,000
8/2021Core Testing and Numerical Well Simulations for Edwards-Trinity (Plateau) Aquifer2100012507UT Austin, Hildebrand Department of Petroleum and Geosystems Engineering
$90,736
12/2020Wilcox, Carrizo, Queen City, Sparta, and Yegua aquifers, Central Texas385In-house-
4/2019Carrizo-Wilcox, Queen City, and Sparta aquifers, GMA 131548301855Contract$181,446
4/2018Northern Trinity Aquifer-In-house-
1/2018Trinity Aquifer1600011950Southwest Research Institute$400,000
12/2017Brackish Groundwater in the Lipan Aquifer Area, Texas384In-house-
11/2017Identification of Potential Brackish Groundwater Production Areas - Blossom Aquifer1600011951LBG-Guyton Associates$50,000
11/2017Identification of Potential Brackish Groundwater Production Areas - Nacatoch Aquifer1600011952LBG-Guyton Associates$150,000
1/2017Identification of Potential Brackish Groundwater Production Areas - Gulf Coast Aquifer1600011947INTERA, Inc.$500,000
11/2016Identification of Potential Brackish Groundwater Production Areas - Blaine Aquifer1600011948Daniel B. Stephens & Associates, Inc.$200,000
11/2016Identification of Potential Brackish Groundwater Production Areas - Rustler Aquifer1600011949INTERA, Inc.$200,000
09/2014Brackish Groundwater in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas
Gulf Coast Aquifer GIS Datasets (128.0 MB)
383In-house-
05/2014Queen City and Sparta Aquifers, Atascosa and McMullen Counties, Texas: Structure and Brackish Groundwater
Queen City and Sparta Aquifer GIS Datasets (23.6 MB)
14-01In-house-
09/2012Geologic Characterization of and Data Collection in the Corpus Christi Aquifer Storage and Recovery Conservation District and Surrounding Counties12-01In-house-
06/2012Pecos Valley Aquifer, West Texas: Structure and Brackish Groundwater
Pecos Valley Aquifer GIS Datasets(92 MB)
382In-house-
03/2012Geophysical Well Log Data Collection Project1100011198Bureau of Economic Geology$300,000
11/2011Brackish Groundwater Bibliography Project1100011198INTERA, Inc.$99,500
11/2011An Assessment of Modeling Approaches to Brackish Aquifers in Texas1100011196INTERA, Inc.$50,000
1992Borehole Geophysical Techniques for Determining the Water Quality and Reservoir Parameters of Fresh and Saline Water Aquifers in Texas84-483-511Collier Consulting, Inc.$356,991

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