The Trinity Aquifer is a major aquifer that extends across much of the central and northeastern part of the state. Edwards Aquifer Map Viewer. Search and browse the first 148 years of the Texas Almanac, hosted on the UNT Portal to Texas History. In 2019, more than 4.4 million acre-feet were pumped from the Ogallala Aquifer, accounting for 67 percent of the water sourced from all major Texas aquifers. Would you like to submit an article, provide feedback, or just get in touch? The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. Total ground-water withdrawals were 76,500 million gallons per day, or 85,800 thousand acre-feet per year for these three uses. Years of heavy pumpage have caused significant water-level declines in portions of the aquifer. These aquifers span many counties and most of the major aquifers extend beyond Texas borders. Water levels in several counties in this region are very low due to over-pumping. Most of the carbonate-rock aquifers consist of limestone, but dolomite and marble locally yield water. Click any position on the map to reveal attributes for a specific location. (February 2005), Valley and Ridge carbonate-rock aquifers were removed:these now should be included in Valley and Ridge aquifers. About 55 percent of all water used in Texas was sourced through aquifers in 2019. County State Well Number Aquifer Aquifer Type Entity/Cooperator Period of Record Wheeler : 0529711 : Ogallala : Unconfined : Texas Water Development Board 2006-07-18 to 2012-08-15: Carson . Aquifers covered by less permeable formations, such as clay, are confined under artesian pressure. Sandstone aquifers can be highly productive and provide large volumes of water. Water-use data collected using this list of aquifers will be published in. Water-level declines are occurring in part of the region because of extensive pumping that far exceeds recharge. Center the map where you want the center of your print, enter a title in the textbox and choose a page size for your print using the drop down. Sulfate and chloride concentrations also tend to increase with depth. Elsewhere, water from the Trinity Aquifer is used primarily for municipal and domestic supply. The aquifer is used for municipal, industrial, and irrigation purposes. About 60 percent of the approximately 16 million acre-feet of water used yearly in Texas is derived from underground formations that make up 9 major and 22 minor aquifers (for map of minor aquifers, click). Groundwater also supplies about 35 percent of the municipal needs of the state. See more information on Water Issues and the Texas economy. in Texas. Irrigation pumpage accounted for 94 percent of the total use from the aquifer in 2008. There are 13 major and 20 minor aquifers; in the Hill Country, the major aquifers are the Edwards and the three water-producing zones of the Trinity. Texas Water Development Board works best with JavaScript enabled. He got the county through the crisis, and thanks to some heavy rains in 2012, the aquifer rebounded a little. 1700 North Congress Avenue, Austin, TX 78701TEL: 512-463-7847 / FAX: 512-475-2053, Asset Management Program for Small Systems, State Water Implementation Fund for Texas (SWIFT), Guidance & References for Online Loan Application, State Water Implementation Fund for Texas, 6th Planning Cycle Information (2026 RWPs), 2021 Regional Water Plans & Previous Plans, Regional Water Planning Data Entry Application (RWP22) Training, District Information (O-Z and Other Districts), Extended Naturalize Flow and Reservoir Evaporation, Flood Planning Useful Links and Resources, Drought Response and Financial Assistance, Water Conservation Plan ~ Utility Profile, Historical Water Loss Audit and Conservation Annual Report Data, Industrial, Commercial & Institutional (ICI), Brackish Resources Aquifer Characterization System, Notice of Nondiscrimination and Reasonable Accommodation, Texas Natural Resources Information System (TNRIS), Texas Water Infrastructure Coordination Committee (TWICC), Texas Aquifers Study: Groundwater Quantity, Quality, Flow, and Contributions to Surface Water, Reevaluation of desired future conditions for the Trinity Aquifer in Comanche and Erath counties, Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas, Geology and Ground-Water Resources of Uvalde County, Texas, Ground-Water Geology of Bexar County, Texas, Ground-Water Resources of Guadalupe County, Texas, Changes in Groundwater Conditions in the Edwards and Trinity Aquifers, 1987-1997, for Portions of Bastrop, Bell, Burnet, Lee, Milam, Travis, and Williamson Counties, Texas, Ground-Water Resources of Bastrop County, Texas, Ground-Water Resources of Navarro County, Texas, Geology and Ground-Water Resources of Medina County, Texas, Geology and Ground-Water Resources of Hays County, Texas, Ground-Water Geology of Bandera County, Texas, Occurrence and Quality of Ground Water in Brown County, Texas, Occurrence and Quality of Ground Water in Montague County, Texas, Occurrence, Availability, and Chemical Quality of Ground Water in the Edwards Plateau Region of Texas, Ground-Water Evaluation in and Adjacent to Dripping Springs, Texas, Occurrence, Availability, and Quality of Ground Water in Travis County, Texas, Ground-Water Resources of Kerr County, Texas, Ground-Water Resources of Blanco County, Texas, Base-Flow Studies, Upper Guadalupe River Basin, Texas, Quality and Quantity, Ground-Water Availability of the Lower Cretaceous Formations in the Hill Country of South-Central Texas, Groundwater Availability of the Trinity Aquifer, Hill Country Area, Texas: Numerical Simulations through 2050, Occurrence, Quantity, and Quality of Ground Water in Taylor County, Texas, Ground-Water Quality Monitoring of the Trinity Aquifer in the Vicinity of Erath County, Occurrence, Availability and Chemical Quality of Ground Water in the Cretaceous Aquifers of North-Central Texas, Volumes 1 & 2, Ground-Water Resources of Part of Central Texas with Emphasis on the Antlers and Travis Peak Formations, Volumes 1 & 2, Evaluation of Water Resources in Part of Central Texas, The Paleozoic and Related Aquifers of Central Texas, Evaluation of Ground-Water Resources of the Paleozoic and Cretaceous Aquifers in the Hill Country of Central Texas, Updated Evaluation of Water Resources in Part of North-Central Texas, 1990-1999, Evaluation of Water Resources in Part of North-Central Texas, Occurrence and Quality of Ground Water in Jack County, Texas, Groundwater Availability Model: Hill Country Portion of the Trinity Aquifer of Texas, Desired future condition scenarios for the middle and lower Trinity Aquifer in Groundwater Management Area 10, Desired future condition scenarios for the Trinity Aquifer in Groundwater Management Area 10, Management plan information for Prairielands GCD, Management plan information for Central Texas GCD, Management plan information for North Texas GCD, Management plan information for Red River GCD, Management plan information for Post Oak Savannah GCD, Additional results from the analysis completed in GAM Task 10-005, Management plan information for Lost Pines GCD, Management plan information for Clearwater UWCD, Management plan information for Middle Trinity GCD, Management plan information for Hays Trinity GCD, Management plan information for Medina County GCD, Management plan information for Cow Creek GCD, Predictive simulations for the Edwards-Trinity (Plateau) and Trinity aquifers in Groundwater Management Area 9, Management plan information for Upper Trinity GCD, Management plan information for Neches & Trinity Valleys GCD, Additional results from the analysis completed in GAM Run 08-064, Predictive and steady-state simulations for the Trinity Aquifer in Groundwater Management Area 9, Management plan information for McLennan County GCD, Predictive simulation for the Woodbine and Trinity aquifers in Groundwater Management Area 8, Management plan information for Northern Trinity GCD, Management plan information for Fox Crossing Water District, Management plan information for Saratoga UWCD, Predictive simulation for the Trinity Aquifer in Groundwater Management Area 9, Predictive simulations for the Trinity Aquifer in Groundwater Management Area 8, Simulation to document locations and discharges to springs and rivers, and document the water budget in Groundwater Management Area 9, Predictive simulation for the Trinity Aquifer in Groundwater Management Area 8, Predictive simulation for the Trinity Aquifer in Lampasas County (Saratoga UWCD), Predictive simulation for the Trinity Aquifer in Mills County, Effects on Guadalupe River flow from various pumping scenarios in the Trinity Aquifer, Recharge information for the Carrizo-Wilcox, Edwards-Trinity (Plateau) and Trinity aquifers in Uvalde County, Recharge information for the Carrizo-Wilcox and Trinity aquifers in Medina County, Recharge rates for the Trinity Aquifer in Hays Trinity GCD, Analytical groundwater modeling to estimate water level drawdown in Erath and Comanche counties, Analytical groundwater modeling to assess water level drawdown by implementing hypothetical well fields, Decadal water level declines for the Upper and Middle Trinity aquifers of the Trinity (Hill Country) GAM, Recharge, leakage, and total storage for the Trinity (Hill Country) in Bandera County River Authority and GCD, Water budget, storage, and drawdown in 2050 for the Trinity (Hill Country) and Carrizo-Wilcox aquifers in Medina County GCD, Water budget by county for the Trinity (Hill Country) Aquifer, Estimated water levels at specified locations in the Trinity (Hill Country) GAM, Average well yield in Kendall County for the Trinity (Hill Country) Aquifer GAM, Managed available groundwater estimates for the Trinity Aquifer in Groundwater Management Area 8, Trinity Aquifer model runs for Central Texas GCD, County water budget for the Trinity (Hill Country) Aquifer GAM, Predictive simulations for the Trinity Aquifer in Clearwater UWCD, Modeled available groundwater for the Trinity Aquifer in Groundwater Management Area 10, Aquifer Test and Related Well Information from Public Water Supply Wells in Groundwater Management Area 8, Management plan data for Hill Country UWCD, Ground Water Recharge Model: Calibration and Validation for Remotely-Sensed Dual Coefficient (RDC) GMA8 ET Estimation, Management plan information for Blanco-Pedernales GCD, Management plan data for Blanco-Pedernales GCD, Management plan data for Neches & Trinity Valleys GCD, Management plan data for Middle Trinity GCD, GAM task - Total Estimated Recoverable Storage, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 6, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 7, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 9, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 10, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 13, Management plan information for Real-Edwards Conservation and Reclamation District, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 8, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 11, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 12, Management plan data for Southern Trinity GCD, Management plan information for Trinity-Glen Rose GCD, Management plan data for Trinity Glen Rose GCD, Management Plan data for Southern Trinity GCD, Management plan data for Hays Trinity GCD, Management plan data for Upper Trinity GCD, Management plan data for Northern Trinity GCD, Predictive simulations for the Trinity Aquifer in Groundwater Management Area 9, Management plan data for Medina County GCD, Management Plan data for Uvalde County UWCD, Management plan information for Middle Trinity GCD, Management plan data for Comal Trinity GCD, Management plan information for Headwaters GCD, Management plan information for Bandera County RA&GD, Management plan information for Hill Country UWCD, Management plan information for Neches and Trinity Valleys GCD, Management plan information for Southern Trinity GCD, Management plan information for Glen Rose GCD, Management plan information for Southwestern Travis County GCD, Management plan information for Bandera County RA & GD, Management plan information for Comal Trinity GCD, Proportion of aquifer with groundwater conservation districts: 88 percent, Number of counties containing the aquifer: 61. National aquifers, or principal aquifers of the United States, are defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable(drinkable)water. The appropriate component aquifer should be used instead of Northern Great Plains. The EAA has an active program to educate the public on water conservation and also operates several active groundwater recharge sites. Groundwater encountered within this area is normally under unconfined, water-table conditions and is most susceptible to contamination. geline aquifers near Houston, Texas. 9999--Areas that are not a national aquifer. TWDB maps depict the 9 major and 21 minor aquifers. AWUDS has a graphical user interface that facilitates data entry, revision, review, and approval. A .gov website belongs to an official government organization in the United States. This dataset documents the depth to groundwater measured in wells screened in the Chicot, Evangeline, and Jasper aquifers in the Houston-Galveston region, Texas for 2019. Eastward-flowing streams during the Quaternary Period deposited discontinuous beds of poorly sorted gravel, sand, silt, and clay that were later dissected by erosion, resulting in the isolated remnants of the formation. The aquifer system is composed of the Catahoula, Oakville, Fleming, Goliad, Willis, Lissie, Bentley, Montgomery, and Beaumont formations. It consists of the Hooper, Simsboro, and Calvert Bluff formations of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. Summary The Carrizo-Wilcox Aquifer is a major aquifer extending from the Louisiana border to the border of Mexico in a wide band adjacent to and northwest of the Gulf Coast Aquifer. The published maps contain base and cultural features not included in these data. 1700 North Congress Avenue, Austin, TX 78701TEL: 512-463-7847 / FAX: 512-475-2053, Asset Management Program for Small Systems, State Water Implementation Fund for Texas (SWIFT), Guidance & References for Online Loan Application, State Water Implementation Fund for Texas, 6th Planning Cycle Information (2026 RWPs), 2021 Regional Water Plans & Previous Plans, Regional Water Planning Data Entry Application (RWP22) Training, District Information (O-Z and Other Districts), Extended Naturalize Flow and Reservoir Evaporation, Flood Planning Useful Links and Resources, Drought Response and Financial Assistance, Water Conservation Plan ~ Utility Profile, Historical Water Loss Audit and Conservation Annual Report Data, Industrial, Commercial & Institutional (ICI), Brackish Resources Aquifer Characterization System, Notice of Nondiscrimination and Reasonable Accommodation, Texas Natural Resources Information System (TNRIS), Texas Water Infrastructure Coordination Committee (TWICC). The aquifer maps and reports undergo continual revision to reflect the latest information available. The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. Irrigation, mainly in the northwestern portion of the region, accounted for about 79 percent of total aquifer use in 2008 and has resulted in significant water-level declines in Glasscock and Reagan counties. In 2008, about 72 percent of pumpage from the aquifer was for municipal use. Texas Water Development Board. The Ogallala Aquifer provides significantly more water for users than any other aquifer in the state. Dell City irrigation from the Bone SpringVictorio Peak minor aquifer in Hudspeth County. A lock () or https:// means youve safely connected to the .gov website. The first 62 editions of the Texas Almanac are fully searchable to aid researchers and students of Texas history. However, water quality diminishes to the south, where large areas contain total dissolved solids in excess of 1,000 milligrams per liter. For the location tool click on the map to get coordinates for a particular location. Share sensitive information only on official, secure websites. Extensive development of the Trinity Aquifer in the Dallas-Fort Worth and Waco areas has resulted in water-level declines of 350 to more than 1,000 feet. The recharge zone of the aquifer in Burnet County is approximately 18,011 acres. However, because these aquifers extend over large areas, large volumes of water can be withdrawn. Now called the Maverick Basin Aquifer, it is known to be at least 3,000 square miles in area and averages 1,000 feet thick in most places. A specific location concentrations also tend to increase with depth aquifers extend over large areas contain total solids! Map to get coordinates for a specific location were 76,500 million gallons per day, or 85,800 thousand acre-feet year! 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