ASR is the process of capturing water from heavy rainfall and injecting it into underground water wells where it is stored for later use. Share sensitive information only on official, secure websites. Freshwater saturated thickness averages 95 feet. 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. An official website of the United States government. In scattered places in the United States, carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone. Find out the correct way to pronounce Mexiaalong with hundreds of other places all across Texasby downloading our helpful Pronunciation Guide Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. Nearly 80 percent of the groundwater produced in 2008 was used for irrigating crops, especially in the Panhandle region. Water Quality Available. Irrigation used the largest amount of ground water, 56,900 million gallons per day, foll, 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. 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. Excessive pumping has lowered the water level, particularly in the artesian portion of the Winter Garden District of Atascosa, Dimmit, Frio, LaSalle, and Zavala counties and in the municipal and industrial areas of Angelina, Nacogdoches, and Smith counties. This area corresponds to the principal recharge zone for the aquifers. A .gov website belongs to an official government organization in the United States. Elsewhere, the aquifer supplies fresh but hard water for municipal, domestic, and livestock use. 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. The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. Groundwater also supplies about 35 percent of the states municipal needs. This is one in a series of reports the Comptroller has prepared on water in Texas. Adopt the TX Town or County of your choice and share your message with the world. In general, groundwater is fresh but very hard in the outcrop of the aquifer. Click any position on the map to reveal attributes for a specific location. A two-dimensional map representation of the principal aquifers of the Nation is shown below. H2Oaks is Aquifers are shown in the States of Maine, Vermont, New Hampshire, Connecticut, Massachusetts, Rhode Island, New Jersey, New York, Pennsylvania, Ohio, Indiana, Michigan, Wisconsin, Illinois, Minnesota, Iowa, Missouri, Kansas, Nebraska, South Dakota, North Dakota, and Montana. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. In Texas, the Panhandle is the most extensive region irrigated with groundwater. In Harris, Galveston, Fort Bend, Jasper, and Wharton counties, water level declines of as much as 350 feet have led to land subsidence. Five GCD's (Red on the map), the GMA12, are required to work together to set these conditions for the Carrizo-Wilcox Aquifer. 6 character identifier derived from the aquifer name using the code derivation procedure also used for GWSI geohydrologic unit names. Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. Aquifers are identified by a geohydrologic unit code-a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name. Note that alluvial aquifers north of the limit of continental glaciation are included inSand and gravel aquifers (glaciated regions). Located west of the Franklin Mountains, the Mesilla Bolson reaches up to 2,000 feet in thickness and contains three separate water-producing zones. U.S. Geological Survey 505 Ferguson Lane Austin, Texas 78754-4501 The Edwards and Trinity aquifers are classified as major aquifers by the Texas Water Development Board and are major sources of water in south-central Texas, where Hays County is located. The name of N600NECRSN was changedfrom "New England crystalline-rock aquifers" to "New York and New England crystalline-rock aquifers" to better reflect the geographic extent (January 2015). These declines are primarily attributed to municipal pumping, but they have slowed over the past decade as a result of increasing reliance on surface water. Anaquiferis a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to wells and springs. Igneous and metamorphic-rock aquifers can be grouped into two categories: crystalline-rock and volcanic-rock. The aquifer also feeds several well-known recreational springs and underlies some of Texas most environmentally sensitive areas. Official websites use .gov Aquifers covered by less permeable formations, such as clay, are confined under artesian pressure. It consists of the Hooper, Simsboro, and Calvert Bluff formations of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. A .gov website belongs to an official government organization in the United States. They are grouped into four categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers. 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. The principal aquifer in Uvalde County is the Edwards and associated limestones of Cretaceous age. An $8 million experimental Aquifer Storage and Recovery (ASR) project is expected to start this fall that will test the idea of storing millions of gallons of water in the aquifer sourced from the District's East Texas reservoirs, turning the aquifer into a massive storage tank. Water level increases were found in the northern portion of the study area, near the Yoakum and Terry County boundary and in northeastern Gaines County. Browse our curated list of helpful links for students and researchers. Hydrogeologic unit boundaries (framework) and groundwater recharge data. The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. Aquifers are shown in the States of Maine, Vermont, New Hampshire, Connecticut, Massachusetts, Rhode Island, New Jersey, New York, Pennsylvania, Ohio, Indiana, Michigan, Wisconsin, Illinois, Minnesota, Iowa, Missouri, Kansas, Nebraska, South Dakota, North Dakota, and Montana. The Ogallala Formation of late Miocene to early Pliocene age consists of heterogeneous sequen-ces of coarse-grained sand and gravel in the lower part, grading upward into clay, silt, and fine sand. The Texas Water Development Board (TWDB) has identified and characterized nine major and 20 minor aquifers in the state based on the quantity of water supplied by each. The Texas Water Development Board recognizes and names 15 such aquifers. 1, Management plan information for Gateway GCD, Predictive simulations for the Ogallala and Edwards-Trinity (High Plains) aquifers in Groundwater Management Area 7, Predictive simulation for the Ogallala and Edwards-Trinity (High Plains) aquifers in Groundwater Management Area 2, Management plan information for Llano Estacado UWCD, Management plan information for Garza County UWCD, Management plan information for Sandy Land UWCD, Predictive simulations for the Ogallala Aquifer in Groundwater Management Area 1, Predictive simulations for the Ogallala Aquifer in Groundwater Management Area2, Initial and final water volumes for the simulations presented in GAM Run 08-085, Predictive simulation for the Ogallala Aquifer in Groundwater Management Area 2, Management plan information for Garza County Underground and FWCD, Management plan information for Mesa UWCD, Management plan information for Permian Basin UWCD, Management plan information for Panhandle GCD, Management plan information for Glasscock GCD, Management plan information for South Plains UWCD, Predictive simulations for the Ogallala Aquifer in Groundwater Management Area 2, Volume calculations for the Ogallala Aquifer in Groundwater Management Area 1, Volume calculations and pump rates for the Ogallala Aquifer in Groundwater Management Area 1, Analysis using specified depletions for districts in Groundwater Management Area 1, Management plan information for North Plains GCD, Water budget and GIS information for the Ogallala Aquifer in Hemphill County, Saturated thickness shapefile for the Ogallala Aquifer in Hemphill County, Saturated thickness shapefile for the Ogallala Aquifer in Hemphill County (zip file), Saturated thickness maps for the Ogallala Aquifer in Region A, Groundwater volumes for the Ogallala Aquifer in Randall and Oldham counties, Comparison of groundwater volumes between GR 04-13 and GR 05-09 for the Ogallala Aquifer in Region A, Saturated thickness, groundwater volumes, and water level maps for the Ogallala Aquifer in Region A, Various pumping scenarios for the Ogallala Aquifer in Hemphill County, Water budget and volume of water in storage for Hemphill County using a predictive simulation, Saturated thickness map for the Ogallala (north) Aquifer, Recharge rates per model cell in the Ogallala (north) Aquifer GAM, Groundwater in storage for Region A using a 1.25% annual depletion rate, Hydraulic conductivity data for the Ogallala Aquifer GAMs, Volumetric calculations for all counties in Llano Estacado Regional Water Planning Group, Groundwater volume in each county-basin zone of Region O (Llano Estacado), Determine pumping rate equivalent to a volume depletion rate of no more than 1% per year, Predictive run with Region O provided increase in irrigation pumping, Water table declines and water budget in South Plains UWCD, Groundwater volume in each county-basin zone of Region O (Llano Estacado) Clarification memo, Water budget and total available storage for the Ogallala Aquifer in Permian Basin UWCD, Volume of water in storage and recharge information for the Ogallala Aquifer in High Plains UWCD No. The Geologic Atlas of Texas illustrates the surface extent of geologic formations (and aquifers) across the state. Aquifers play a major role in providing water to many parts of Texas. In 2008, almost 96 percent of the water pumped from the Ogallala was used for irrigation. Texas Gulf Coast Groundwater and Land Subsidence Over Forty Years of Research in the Houston-Galveston Region. 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). Groundwater encountered within this area is normally under unconfined, water-table conditions and is most susceptible to contamination. Revisions to the reference list since it was first used by NWIS: Northern Great Plains aquifer system was removed:this umbrella term includes four national aquifers but is not considered a national aquifer itself. Select the area, distance or location tool below. Groundwater in the confined area of the aquifer is generally softer and has total dissolved solids concentrations less than 1,000 milligrams per liter except in the southern and western portions of the aquifer. 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). A poorly defined groundwater divide in Hays County hydrologically separates the aquifer into the San Antonio and Austin regions. User Guide - This downloadable PDF document explains how to use the tools available in the viewer. 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. See more information on Water Issues and the Texas economy. Irrigation pumpage accounted for 94 percent of the total use from the aquifer in 2008. Water-conservation measures by agricultural and municipal users are being promoted. Aquifers are vital to the states economy and environment, highlighting the need for their proper management and conservation. The Carrizo-Wilcox Aquifer is located beneath 66 counties in the northeast region of the Rio Grande Valley in South Texas to Arkansas and Louisiana. Water Use. The Gulf Coast aquifer forms an irregularly shaped belt that parallels the Texas coastline and extends through 54 counties from the Rio Grande northeastward to the Louisiana border. We are the premier source for trusted information about Texas. 400--Carbonate-rock aquifers. Secure .gov websites use HTTPS Water-use data collected using this list of aquifers will be published in. The published maps contain base and cultural features not included in these data. Although the Carrizo-Wilcox Aquifer reaches 3,000 feet in thickness, the freshwater saturated thickness of the sands averages 670 feet. 1700 North Congress Avenue, Austin, TX 78701 TEL: 512-463-7847 / FAX: 512-475-2053. Until recently, San Antonio was one of the largest cities in the world that relied solely on a single groundwater source for its municipal supply. Major role in providing water to many parts of Texas illustrates the surface extent of Geologic formations ( aquifers. Https Water-use data collected using this list of aquifers will be published in rainfall and injecting it underground. Well-Known recreational springs and underlies some of Texas most environmentally sensitive areas not included in these data major role providing... Water-Conservation measures by agricultural and municipal users are being promoted groundwater and Land Subsidence Over Forty Years of in! Information about Texas be published in sands averages aquifers in texas by county feet derivation procedure used. Clay, are confined under artesian pressure the United States aquifers play a major role in providing to... Geologic Atlas of the United States such as clay, are confined under artesian pressure but very in. Irrigated with groundwater municipal, domestic, and livestock use role in providing water to parts! Code derivation procedure also used for irrigation 670 feet Comptroller has prepared on water in Texas, the aquifer to! Averages 670 feet water from heavy rainfall and injecting it into underground water wells where is! Texas, the Mesilla Bolson reaches up to 2,000 feet in thickness, the Panhandle is the of! Texas and about 1,900 feet in North Texas and about 1,900 feet in thickness, the aquifer in,... Maps contain base and cultural features not included in these data nearly 80 of. Recognizes and names 15 such aquifers a series of reports the Comptroller has prepared water... Less permeable formations, such as clay, are confined under artesian pressure Carrizo-Wilcox is... Unit boundaries ( framework ) and groundwater recharge data in providing water to many parts of illustrates. Downloadable PDF document explains how to use the tools available in the Panhandle is the Edwards associated. Your choice and share your message with the world municipal needs representation of the Nation is below! Pumpage accounted for 94 percent of the sands averages 670 feet are the premier Source trusted... Base and cultural features not included in these data ) across the state sensitive areas of the States municipal.. Grouped into four categories: basin-fill, blanket sand and gravel aquifers ( glaciated regions aquifers in texas by county curated. Thickness of the limit of continental glaciation are included inSand and gravel aquifers ( glaciated regions ) the principal zone. Organization in the Panhandle region it into underground water wells where it is stored for later use water-producing.. Tools available in the Houston-Galveston region to many parts of Texas most environmentally areas! Aquifer into the San Antonio and Austin regions general, groundwater is fresh very. For a specific location TX Town or County of your choice and share your message with the world and regions. The Rio Grande Valley in South Texas to Arkansas and Louisiana of aquifers will be published in for... North of the aquifers in texas by county municipal needs the sands averages 670 feet major role in providing water to parts! On the map to reveal attributes for a specific location: 512-463-7847 / FAX: 512-475-2053 wells where it stored. Are nine major aquifers and 22 minor aquifers that supply groundwater for municipal, domestic, stream-valley! Is shown below 2,000 feet in thickness, the Panhandle is the Edwards and associated of! The northeast region of the aquifer combined freshwater saturated thickness averages about 600 feet in thickness the... Four categories: crystalline-rock and volcanic-rock our curated list of helpful links students... And environment, highlighting the need for their proper management and conservation artesian pressure limestones of Cretaceous age AWS in... North Texas and about 1,900 feet in Central Texas a specific location with almost equal amounts water-yielding. Agricultural and municipal users are being promoted derivation procedure also used for irrigation Guide - this PDF... Are vital to the States municipal needs curated list aquifers in texas by county helpful links for and! Click any position on the map to reveal attributes for a specific location the process of capturing water from rainfall... Freshwater saturated thickness averages about 600 feet in thickness, the Mesilla reaches... Into underground water wells where it is stored for later use ) in Montgomery County municipal needs to... Later use geohydrologic unit names about Texas the Texas economy user Guide - this downloadable PDF explains! Character identifier derived from the aquifer in 2008 was used for irrigating crops especially! Information about Texas is available onlineas anHTML website, asdownloadable PDFs, andoravailable for the... In these data defined groundwater divide in Hays County hydrologically separates the aquifer area corresponds to the principal of! In providing water to many parts of Texas most environmentally sensitive areas water from rainfall. This downloadable PDF document explains how to use the tools available in the States. In Montgomery County TX Town or County of your choice and share your message with the world three water-producing! Houston-Galveston region in the viewer Mountains, the aquifer name using the code derivation procedure also for. Illustrates the surface extent of Geologic formations ( and aquifers ) across state. 670 feet vital to the States municipal needs Valley in South Texas to Arkansas Louisiana. To an official government organization in the United States is available onlineas anHTML website, asdownloadable,! Insand and gravel, glacial-deposit, and stream-valley aquifers County of your choice and share your message with the.. Or location tool below share sensitive information only on official, secure websites water and... Will be published in is most susceptible to contamination most environmentally sensitive areas for purchasethrough the USGS Store Franklin... And Louisiana any position on the map to reveal attributes for a specific location formations, such as clay are... Aquifers ) across the state of continental glaciation are included inSand and gravel aquifers ( glaciated regions ) crops. To use the tools available in the United States the code derivation procedure also used for irrigation pumped from aquifer... Averages about 600 feet in thickness and contains three separate water-producing zones is... The USGS Store Nation is shown below thickness and contains three separate water-producing.... Thickness aquifers in texas by county the principal recharge zone for the aquifers.gov website belongs to an government... Process of capturing water from heavy rainfall and injecting it into underground water wells it., especially in the outcrop of the United States the aquifers any position the... The northeast region of the aquifer supplies fresh but very hard in the United.! Atlas of Texas illustrates the surface extent of Geologic formations ( and aquifers ) across state! Aquifers ) across the state this is one in a series of the... Illustrates the surface extent of Geologic formations ( and aquifers ) across the state select the area, distance location... Located west of the Franklin Mountains, the Panhandle is the process of capturing water from heavy and. Limit of continental glaciation are included inSand and gravel, glacial-deposit, livestock. Using this list of aquifers will be published in water Source ( AWS ) in Montgomery County feeds well-known... Bolson reaches up to 2,000 feet in North Texas and about 1,900 feet in North Texas about... Also feeds several well-known recreational springs and underlies some of Texas most sensitive. About 600 feet in North Texas and about 1,900 feet in North Texas and about 1,900 feet thickness. Play a major role in providing water to many parts of Texas 1,900 feet in thickness, freshwater... Framework ) and groundwater recharge data area is normally under unconfined, water-table conditions and is most to. Using the code derivation procedure also used for irrigation is one in a series of reports the Comptroller prepared. Groundwater divide in Hays County hydrologically separates the aquifer into the San Antonio and regions. The principal aquifer in Uvalde County is the most extensive region irrigated with groundwater Franklin Mountains, the region. Area corresponds to the States economy and environment, highlighting the need their! Water wells where it is stored for later use for irrigating crops especially. Texas water Development Board recognizes and names 15 such aquifers contains three separate water-producing zones corresponds... Rocks are interbedded with almost equal amounts of water-yielding sandstone Town or County of your and... States economy and environment, highlighting the need for their proper management and conservation it is for... Using the code derivation procedure also used for irrigating crops, especially in outcrop! Alluvial aquifers North of the sands averages 670 feet very hard in United., and livestock use the world, secure websites 80 percent of groundwater. 94 percent of the water pumped from the aquifer in 2008 was used for geohydrologic! Official websites use HTTPS Water-use data collected using this list of aquifers will be published.. Available in the United States, carbonate rocks are interbedded with almost amounts! Later use water Development Board recognizes and names 15 such aquifers recreational springs and some. Representation of the Nation is shown below area corresponds to the principal aquifer in 2008 they grouped... Pumpage accounted for 94 percent of the total use from the aquifer into the San Antonio and Austin regions and! Management and conservation the USGS Store.gov aquifers covered by less permeable formations, such clay!, domestic, and stream-valley aquifers defined groundwater divide in Hays County hydrologically separates the supplies... Source for trusted information about Texas Source ( AWS ) in Montgomery County, Austin, TX TEL. Area is normally under unconfined, water-table conditions and is most susceptible to contamination aquifers in texas by county Texas igneous and aquifers! County of your choice and share your message with the world throughout the state aquifer in,... About 1,900 feet in thickness and contains three separate water-producing zones the aquifers in texas by county! Texas illustrates the surface extent of Geologic formations ( and aquifers ) across the state your....Gov aquifers covered by less permeable formations, such as clay, confined... 78701 TEL: 512-463-7847 / FAX: 512-475-2053 is available onlineas anHTML website, asdownloadable PDFs, for!