aquifers in texas by county

In general, groundwater is fresh but very hard in the outcrop of the aquifer. 1, Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. In 2008, 72 percent of groundwater pumped from the aquifer was used for irrigation, and the rest is withdrawn for industrial uses, power supply, and municipal use. The principal aquifer in Uvalde County is the Edwards and associated limestones of Cretaceous age. Water-conservation measures by agricultural and municipal users are being promoted. This is one in a series of reports the Comptroller has prepared on water in Texas. County-- select one or more . The EAA has an active program to educate the public on water conservation and also operates several active groundwater recharge sites. Water quality is generally good northeast of the San Antonio River basin, but deteriorates to the southwest. The aquifer underlies an extensive area in south-central Texas extending along the Balcones fault zone from Kinney County eastward to San Antonio, and thence northeastward to Hays County. The first 62 editions of the Texas Almanac are fully searchable to aid researchers and students of Texas history. Aquifers play a major role in providing water to many parts of Texas. Consisting of up to 1,500 feet of alluvial fill, the aquifer occupies two hydrologically separate basins: the Pecos Trough in the west and the Monument Draw Trough in the east. Aquifers in carbonate rocks are most extensive in the eastern U.S. 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, An Investigation of Clouds and Precipitation for the Texas High Plains, Quantity and Chemical Quality of Low Flow in the Prairie Dog Town Fork Red River near Wayside, Texas, February 6-9,1968, Evaluating the Ground-Water Resources of the High Plains of Texas, Volumes 1-4, The High Plains Aquifer System of Texas, 1980 to 1990 - Overview and Projections, Evaluation of Ground-Water Resources in Dallam County, Texas, Evaluation of Enhanced Recharge Potential to the Ogallala Aquifer in the Brazos River Basin, Hale County, Texas, Updated Water-Quality Evaluation of the Ogallala Aquifer, Including Selected Metallic and Non-Metallic Inorganic Constituents, Studies of Playa Lakes in the High Plains of Texas, Geology and Ground-Water Resources of Hale County, Texas, Ground-Water Resources of Gaines County, Texas, Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas, Conference Proceedings: Aquifers of the Edwards Plateau, Water-Quality Evaluation of the Ogallala Aquifer, Texas, Evaluation of Ground-Water Resources in Briscoe, Hale, and Swisher Counties, Texas, Evaluation of Ground-Water Resources in the Southern High Plains of Texas, Ground-Water Resources of Collingsworth County, Texas, Ground-Water Resources of Hall and Eastern Briscoe Counties, Texas, Water-Level Changes in the High Plains Aquifer of Texas, 1980-1990, Management plan information for Hemphill County UWCD, Management plan information for High Plains UWCD No. Hydrogeologic unit boundaries (framework) and groundwater recharge data. For the area tool click points on the map to begin building the polygon you want to measure and then double click to close the polygon. ASR is the process of capturing water from heavy rainfall and injecting it into underground water wells where it is stored for later use. Water from the Antlers portion is used mainly for irrigation in the outcrop area of North and Central Texas. Aquifers shown on the 2003PrincipalAquifers map, with some additions, were used as the first National AquiferReferenceList in the USGSNational Water Information System(NWIS) in theAggregate Water Use Data System(AWUDS,database released in August 2001). Aprincipal aquiferis defined as a regionally extensive aquifer or aquifer system that has the potential to be used as a source of potable (drinkable) water. Where the Glen Rose thins or is absent, the Twin Mountains and Paluxy formations coalesce to form the Antlers Formation. In 2019, more than 90 percent of the water pumped from the Ogallala was used for irrigation, while more than 90 percent of the Hueco-Mesilla pumpage served municipal purposes. The Texas Water Development Board (TWDB) recognizes 9 major aquifers aquifers that produce large amounts of water over large areas (see major aquifers map) and 22 minor aquifers aquifers that produce minor amounts of water over large areas or large amounts of water over small areas (see minor aquifers map ). Located in the upper Pecos River Valley of West Texas, this aquifer, formerly called the Cenozoic Pecos Alluvium, extends through 12 counties. Water to the north of the Canadian River is generally fresh, with total dissolved solids typically less than 400 milligrams per liter. It's very responsive to the weather and very responsive to drought, unfortunately. The Hickory aquifer occurs in parts of 19 counties in the Llano Uplift region of Central Texas. Refer to the metadata for a complete description of the files and how they were generated. Does your community have an annual fair or festival you'd like to have listed on our site, or in the next Texas Almanac? Delineations of the downdip boundaries of such aquifers as the Edwards (BFZ), Trinity, and Carrizo-Wilcox are based on chemical quality criteria. This map, which was derived fromGround Water Atlas of the United Statesdata (published as part of the National Atlas in 1998, revised 2003) indicates the areal extent of the uppermost principal aquifers on a national scale. Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. El Paso and Fort Bliss also have built the worlds largest inland desalination plant in El Paso County, which uses brackish groundwater from the Hueco Bolson. Aquifers covered by less permeable formations, such as clay, are confined under artesian pressure. The Ogallala aquifer extends through 48 counties of the Texas Panhandle and is the southernmost extension of the largest aquifer (High Plains aquifer) in North America. This dataset, published in 2003, contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as polygons. In 2005,thenational aquiferinformationwas addedto NWIS, allowing users to search by national aquifer code and name from the reference list below. The competition for ground water from the Edwards aquifer has created some controversial water issues in central Texas. For the location tool click on the map to get coordinates for a particular location. The quality of groundwater used for public supply was assessed in 25 principal aquifers (PAs) that account for 84% of groundwater pumped for public supply in the U.S. (89.6 million people on a proportional basis). The surficial aquifer in the Coastal Plain of these States should be included in the Northern Atlantic Coastal Plain aquifer system. Tell us about it! The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. The presence of contaminants in a source water can constrain its suitability for drinking. Located west of the Franklin Mountains, the Mesilla Bolson reaches up to 2,000 feet in thickness and contains three separate water-producing zones. Extending from the Rio Grande in South Texas northeastward into Arkansas and Louisiana, the Carrizo-Wilcox aquifer provides water to all or parts of 66 counties. Local aquifer: Not all groundwater sites have been associated with a local aquifer. (Note that the National Aquifer Code uses a different numeric component than the geohydrologic unit names.). Adopt the TX Town or County of your choice and share your message with the world. The Texas Water Development Board (TWDB) specifically disclaims any and all liability for any claims or damages that may result from providing these data. The Trinity Aquifer consists of basal Cretaceous-age Trinity Group formations extending through 61 counties from the Red River in North Texas to the Hill Country of Central Texas. Water levels have declined in the Winter Garden area because of irrigation pumping and in the northeastern part of the aquifer because of municipal pumping. Groundwater in the unconfined area is hard and typically has total dissolved solids concentrations less than 1,000 milligrams per liter. In scattered places in the United States, carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone. The aquifer is used for municipal, industrial, and irrigation purposes. Guadalupe runs dry with rainfall scarce. The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. Most of the carbonate-rock aquifers consist of limestone, but dolomite and marble locally yield water. Secure .gov websites use HTTPS the largest aquifer Texas Water Development Board works best with JavaScript enabled. They are grouped into four categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers. Computer models of the northern and southern portions of the Ogallala aquifer were completed by the Texas Water Development Board and its contractor. PrefaceThe Ground Water Atlas of the United States presents a comprehensive summary of the Nation's ground-water resources and is a basic reference for the location, geography, geology, and hydrologic characteristics of the major aquifers in the Nation. The Carrizo-Wilcox Aquifer has long been utilized by private well owners, municipalities, agricultural producers and industry. However, some individual aquifers serve mostly municipal purposes. 500--Sandstone and carbonate-rock aquifers. In most places where these two rock types are interbedded, the carbonate rocks yield much more water than the sandstone. The principal aquifers shown on the 2003 map above, with some additions, were used as the first National Aquifer reference list in the USGS National Water Information System (NWIS) in the Aggregate Water Use Data System (database released in August 2001). If you have any questions or concerns regarding the material on this page, please contact the Comptrollers Data Analysis and Transparency Division. The Aggregate Water-Use Data System (AWUDS) is the database management system used to enter, store, and analyze state aggregate water-use data. Conservation districts are promoting more-efficient irrigation techniques, and market-based, voluntary transfers of unused agricultural water rights to municipal uses are more common. 1, Management plan data for Llano Estacado UWCD, Management Plan Information for Hemphill County UWCD, Management plan information for Mesquite GCD, Management plan information for High Plains UWCD #1, Management plan information for Hemphil County UWCD, Proportion of aquifer with groundwater conservation districts: 86 percent, Number of counties containing the aquifer: 49. Most of the water pumped from the aquifer is used for irrigation. Please note that the maps do not show the entire extent of an aquifer, only itssubcropor outcrop area. These aquifers are a critical source of water for Texas, supplying 55 percent of the 14.7 million acre-feet of water used in the state in 2020. The appropriate component aquifer should be used instead of Northern Great Plains. geline aquifers near Houston, Texas. For the distance tool click points on the map to build line segments to measure and double click to complete the measurement. For Geophysical Well Log assistance contact. Texas Water Development Board works best with JavaScript enabled. Surficial deposits of glacial origin (New Jersey) should be included in Sand and gravel aquifers (glaciated regions). The first publication of the core of the national aquifer list in a comprehensive manner was theGround Water Atlas of the United States(USGS Hydrologic Atlas 730, published in 2000) published as part of the National Atlas in 1998, revised 2003. 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