The Texas Water Development Board (TWDB) Groundwater Database (GWDB) contains information on selected water wells, springs, oil/gas tests (that were originally intended to be or were converted to water wells), water levels, and water quality to gain representative information about aquifers in Texas to support water planning from a local to a more regional perspective. This is a scientific database, not a registry of every well drilled in the state.

This interactive mapping application provides access to water-related data for Texas. The viewer contains several GIS datasets relating to water resources, including TWDB groundwater data, brackish groundwater data, and data from the Submitted Driller's Reports Database. Contact Email: WDI-Support@twdb.texas.gov

Texas Department of Licensing and Regulation's (TDLR) Submitted Driller's Report Database. This database contains water well reports submitted to TDLR from February 2001 to present.Website Link: http://www.twdb.texas.gov/groundwater/data/drillersdb.asp

Point locations of the measured water quality analyses manually entered into the BRACS Database from various sources. Some of these data are duplicates of sample data housed in the TWDB Groundwater Database.

Geospatial data about Texas Water Development Board Groundwater. Export to CAD, GIS, PDF, CSV and access via API.

Texas Department of Licensing and Regulation's (TDLR) Submitted Driller's Report Database. This database contains plugged water well reports submitted to TDLR from February 2001 to present.Website Link: http://www.twdb.texas.gov/groundwater/data/drillersdb.asp

This data release contains compiled historical groundwater-withdrawal data for the Coastal Lowlands aquifer system in Texas, Louisiana, Mississippi, Alabama, and Florida from 1925 to 2018. Most groundwater-withdrawals were distributed to groundwater wells and separated into water-use categories of industrial, production well, power generation, mining, domestic, irrigation, livestock or commercial. Groundwater-withdrawal data were obtained, where available, from existing database resources hosted by various State and Federal agencies. For Texas, data were obtained from the Texas Water Development Board (TWDB) from both existing Groundwater-Availability Models (GAM), and from historical groundwater-withdrawal data. For Louisiana data were obtained from the U.S. Geological Survey Lower Mississippi-Gulf Water Science Center, Baton Rouge, Louisiana office. For Mississippi data were obtained from the Mississippi Department of Environmental Quality, and from the U.S. Geological Survey Lower Mississippi-Gulf Water Science Center, Jackson, Mississippi. For Alabama data were obtained from the Alabama Department of Economic and Community Affairs, Office of Water Resources, and from the U.S. Geological Survey Lower Mississippi-Gulf Water Science Center, Montgomery, Alabama office. For Florida data were obtained from the U.S. Geological Survey Caribbean-Florida Water Science Center, Lutz and Orlando Florida offices.

The Brackish Resources Aquifer Characterization System (BRACS) Database stores well and geology information to help characterize the brackish groundwater resources of Texas. This database contains all types of wells (not just brackish water wells) including those in fresh water zones with linked geophysical well logs, aquifer test information, lithology and stratigraphic picks. Website Link: https://www.twdb.texas.gov/innovativewater/bracs/projects/HB30_Gulf_Coast/index.asp

The Submitted Drillers Report (SDR) Database is populated from the online Texas Well Report Submission and Retrieval System (TWRSRS) which registered water-well drillers use to submit their required reports. This dataset contains pipe "|" delimited text files of all data tables from the Submitted Drillers Report (SDR) database, updated nightly.

Confirmed districts are arranged in alphabetical order. Dates indicate when district was established by law or election. * Districts that have, in whole or part, authority as assigned by Chapter 36 of the Texas Water Code. Please refer questions pertaining to individual districts to the district themselves. (www.twdb.texas.gov/groundwater/conservation_districts/index.asp) ** The subsidence districts and the Edwards Aquifer Authority are not groundwater conservation districts as defined under Chapter 36 of the Texas Water Code, but have the ability to regulate groundwater production (Senate Bill 1537 from the 79th Legislative Session and House Bill 2729 from the 86th Legislative Session). Groundwater Conservation District GIS Data created by the Texas Commission on Environmental Quality. For more information, please contact TCEQ at 512-239-1000 or wras@tceq.texas.gov. DISCLAIMER: This map was generated by the Texas Water Development Board using GIS (Geographical Information System) software. No claims are made to the accuracy or completeness of the information shown herein nor to its suitability for a particular use. The scale and location of all mapped data are approximate. Map date: NOV-2019

Water Data for Texas is a product of the Texas Water Development Board (TWDB) Water Science Conservation Division and is made possible by the support of management and staff at TWDB. This project is part of our ongoing efforts to synthesize and communicate water-related data to scientists, policy makers and the public. As a convenience to the public, this website also retrieves and displays well data collected by the U.S. Geological Survey (USGS) and the Edwards Aquifer Authority (EAA). All data displayed for these wells are maintained by USGS and EAA respectively.

The Groundwater Availability Models (GAMs) were commissioned b the Texas Water Development Board (TWDB) and created with hydrological, climatic, and geological data from the state to model its aquifers behavior. Their main objective is as a tool to aid in the planning and management of the groundwater resources in the state to accomplish the TWDB 2017 water plan (currently adopted). This set of GAMs has been translated from their original MOFLOW version to MODFLOW 2000 for uniformity and all can be run either in MODFLOW or in GMS (Aquaveo 2017).

To access this data, please contact at aaron.pena.hydro@tamu.edu

Additional Information DisclaimerAlthough the data have been subjected to standard TWDB review protocols and are substantially complete, the TWDB reserves the right to revise the data pursuant to further analysis and review. All groundwater availability modeling data were developed for regional scale use only, and should not be used for local scale or individual site locations. Furthermore, the data are released on condition that neither the TWDB nor the State of Texas shall be held liable for any damages resulting from their authorized or unauthorized use. Program AreaGroundwater Modeling Supporting URLs https://www.twdb.texa...gam/ebfz_n/ebfz_n.asp Copy https://www.twdb.texa...hern%20Segment)%20GAM Copy https://www.twdb.texa...ater/models/index.asp Copy https://www.twdb.te... COPY https://www.twdb.te... COPY https://www.twdb.te... COPY Data Contact Emailgam@twdb.texas.gov

Additional Information DisclaimerAlthough the data have been subjected to standard TWDB review protocols and are substantially complete, the TWDB reserves the right to revise the data pursuant to further analysis and review. All groundwater availability modeling data were developed for regional scale use only, and should not be used for local scale or individual site locations. Furthermore, the data are released on condition that neither the TWDB nor the State of Texas shall be held liable for any damages resulting from their authorized or unauthorized use. Additional InformationThe data was compressed into 7-Zip format for efficient downloading. The TWDB uses 7-Zip 21.07 to compress data files and should be compatible with most zip file format utility software. You may also use Google to search for other free alternative zip file format utility software. Please note that any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the TWDB nor the State of Texas. Program AreaGroundwater Modeling Supporting URLs https://www.twdb.texa...els/gam/bzrv/bzrv.asp Copy https://www.twdb.texa...uvium%20Aquifer%20GAM Copy https://www.twdb.texa...ater/models/index.asp Copy https://www.twdb.te... COPY https://www.twdb.te... COPY https://www.twdb.te... COPY Data Contact Emailgam@twdb.texas.gov

Additional Information DisclaimerAlthough the data have been subjected to standard TWDB review protocols and are substantially complete, the TWDB reserves the right to revise the data pursuant to further analysis and review. All groundwater availability modeling data were developed for regional scale use only, and should not be used for local scale or individual site locations. Furthermore, the data are released on condition that neither the TWDB nor the State of Texas shall be held liable for any damages resulting from their authorized or unauthorized use. Additional InformationThe data was compressed into 7-Zip format for efficient downloading. The TWDB uses 7-Zip 21.07 to compress data files and should be compatible with most zip file format utility software. You may also use Google to search for other free alternative zip file format utility software. Please note that any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the TWDB nor the State of Texas. Program AreaGroundwater Modeling Supporting URLs https://www.twdb.texa...els/gam/igbl/igbl.asp Copy https://www.twdb.texa...eous%20Aquifers%20GAM Copy https://www.twdb.texa...ater/models/index.asp Copy https://www.twdb.te... COPY https://www.twdb.te... COPY https://www.twdb.te... COPY Data Contact Emailgam@twdb.texas.gov

Geodatabase containing feature classes and raster data associated with the groundwater availability model (GAM) developed for the Blossom Aquifer. The geodatabase includes geospatial data relating to boundaries, climate, geochemistry, geology, hydraulic properties, pumping, soil, surface hydrology, and water levels of the Blossom Aquifer.

Geodatabase containing feature classes and raster data associated with the groundwater availability model (GAM) developed for the northern segment of the Edwards Balcones Fault Zone (BFZ) Aquifer. The geodatabase includes geospatial data relating to boundaries, climate, geochemistry, geology, hydraulic properties, pumping, soil, surface hydrology, and water levels of the northern segment of Edwards (BFZ) Aquifer.

The TWDB initiated the springs monitoring program in 2020 in conjunction with the groundwater quality sampling program. The purpose of the springs monitoring program is to monitor and inventory a consistent network of springs across the state on an annual basis.

Geodatabase containing feature classes and raster data associated with the groundwater availability model (GAM) developed for the southern portion of the Trinity Aquifer (Hill Country). The geodatabase includes geospatial data relating to boundaries, climate, geochemistry, geology, hydraulic properties, pumping, soil, surface hydrology, and water levels of the southern portion of the Trinity Aquifer (Hill Country).

Geodatabase containing feature classes and raster data associated with the groundwater availability model (GAM) developed for the northern portion of the Trinity Aquifer and the Woodbine aquifers. The geodatabase includes geospatial data relating to boundaries, climate, geochemistry, geology, hydraulic properties, pumping, soil, surface hydrology, and water levels of the northern portion of the Trinity Aquifer and the Woodbine aquifers.