They are grouped into four categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers. Located west of the Franklin Mountains, the Mesilla Bolson reaches up to 2,000 feet in thickness and contains three separate water-producing zones. 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. H2Oaks is The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. Edwards Aquifer Map Viewer. The Ogallala Aquifer is the largest aquifer in the United States and is a major aquifer of Texas underlying much of the High Plains region. 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. In 1993, the Edwards Aquifer Authority (EAA) was created by the legislature to regulate aquifer pumpage to benefit all users from Uvalde County through a portion of Hays County. The aquifer now provides approximately 90 percent of the citys drinking water. 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. 9999--Areas that are not a national aquifer. Texas Water Development Board works best with JavaScript enabled, 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). 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. About 55 percent of all water used in Texas was sourced through aquifers in 2019. Groundwater movement is generally toward the southeast. The largest area of groundwater-level decline in the Ogallala aquifer was found in Gaines County to the southwest of Denver City, Texas. Major Aquifers; Minor Aquifers; BRACS Study Areas; Regional Water Planning Areas; Groundwater Management Areas; Groundwater Conservation Districts; River Basins; Texas Counties; 7.5' USGS Grid; 2.5' State Grid; Base Maps Total ground-water withdrawals were 76,500 million gallons per day, or 85,800 thousand acre-feet per year for these three uses. Below are publications associated with national aquifers. Located in the upper Pecos River Valley of West Texas, this aquifer, formerly called the Cenozoic Pecos Alluvium, extends through 12 counties. 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. Freshwater saturated thickness averages 95 feet. Groundwater in the unconfined area is hard and typically has total dissolved solids concentrations less than 1,000 milligrams per liter. Please note that the maps do not show the entire extent of an aquifer, only itssubcropor outcrop area. Tell us about it! Years of heavy pumpage have caused significant water-level declines in portions of the aquifer. The Aggregate Water-Use Data System (AWUDS) is the database management system used to enter, store, and analyze state aggregate water-use 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). geline aquifers near Houston, Texas. In 2008, municipal uses accounted for 62 percent and irrigation accounted for 25 percent of the total pumpage from the aquifer. Sandstone aquifers can be highly productive and provide large volumes of water. The published maps contain base and cultural features not included in these data. 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). Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. Groundwater encountered within this area is normally under unconfined, water-table conditions and is most susceptible to contamination. storage and recovery facility About 55 percent of all water used in Texas was sourced through aquifers in 2019. Last fall while exploring for oil and gas deposits in southwest Texas, a driller instead found a huge freshwater deep aquifer. In general, groundwater is fresh but very hard in the outcrop of the aquifer. Results of the Regional A, 12201 Sunrise Valley Drive Reston, VA 20192, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Region 12: Pacific Islands (American Samoa, Hawaii, Guam, Commonwealth of the Northern Mariana Islands), Unconsolidated and semiconsolidated sand and gravel aquifers, Regional Groundwater Availability Studies, North and South Carolina Atlantic Coastal Plain, Pennsylvanian and Mississippian Aquifers of the Appalachian Plateaus, Groundwater, Aquifers, Wells, and Springs, Minor aquifers, confining units, and areas identified as "not a principal aquifer", Quality of groundwater used for public supply in the continental United States: A comprehensive assessment, Principal aquifers [of the United States]. Water quality generally ranges from fresh to slightly saline. 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). The availability of this water is critical to the economy of the region, as approximately 95 percent of groundwater pumped is used for irrigated agriculture. The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. About 75 percent of this water is used for irrigation, with irrigators withdrawing most of this water from the Ogallala Aquifer alone (74 percent of all groundwater used for irrigation, or 4.5 million acre-feet per year). 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. Edwards (Balcones Fault Zone) (San Antonio-oriented) However, because these aquifers extend over large areas, large volumes of water can be withdrawn. Local aquifer: Not all groundwater sites have been associated with a local aquifer. The appropriate component aquifer should be used instead of Northern Great Plains. Aquifers can contain fresh, brackish, or saline water; or, usually, all three There are several types of aquifers with very different characteristics Michael Conner: Understanding Aquifers 7 All the "science" about aquifers is a simplification, and it is frequently quite controversial. Water Tour | Aquifers Overview | Print Snapshot (PDF). You may need to request the addition of Alluvial aquifers to the list of aquifers valid in your State. 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. 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. See more information on Water Issues and the Texas economy. Although water level declines in excess of 300 feet have occurred in several areas over the last 50 to 60 years, the rate of decline has slowed, and water levels have risen in a few areas. An official website of the United States government. Nearly 80 percent of the groundwater produced in 2008 was used for irrigating crops, especially in the Panhandle region. A national layer, including all available SSA coverages, is available for use in GIS. 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. 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. Page Contact Information: Texas Water Data Maintainer Page Last Modified: 2023-02-25 01:14:50 EST Whether you are a teacher or home-school parent, you will find our Teacher's Guide to be an invaluable tool for teaching all things Texas to your students. This is an important step in planning for water in Texas and Bastrop County for the next 50 years. 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. For the distance tool click points on the map to build line segments to measure and double click to complete the measurement. Map of major and minor aquifers in Texas. These aquifers are located in El Paso and Hudspeth counties in far West Texas and occur in Tertiary and Quaternary basin-fill deposits that extend northward into New Mexico and westward into Mexico. Below are other webpages associated with principal aquifers. A lock () or https:// means youve safely connected to the .gov website. Natural salt pollution in the upper reaches of the Red and Brazos river basins precludes the full utilization of these water resources. It consists of the Hooper, Simsboro, and Calvert Bluff formations of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. Freshwater saturated thickness averages 95 feet. Municipal use accounted for 63 percent of the total aquifer use in 2008. Browse our curated list of helpful links for students and researchers. 1, Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. Texas has three ASR systems. For an overview ofprincipalaquifers:The principal water-yielding aquifers of North America can be grouped into five types by rock type and location: unconsolidated and semiconsolidated sand and gravel aquifers, sandstone aquifers, carbonate-rock aquifers, aquifers in interbedded sandstone and carbonate rocks, and aquifers in igneous and metamorphic rocks. The Trinity Aquifer is a major aquifer that extends across much of the central and northeastern part of the state. In scattered places in the United States, carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone. The Hueco Bolson, located on the eastern side of the Franklin Mountains, consists of up to 9,000 feet of clay, silt, sand, and gravel and is an important source of drinking water for both El Paso and Juarez, Mexico. 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. (in error) Northern Great Plains aquifer system, Some revisions to the lists of valid States, this code, and reference list were added to the NWIS Site File and toNWISWebwith the release of NWIS 4.5 in 2005; see the WMA Technical Memo "NWIS 4.5 -- Assigning National Aquifer Codes in the Ground Water Site Inventory (GWSI) for the NWIS 4.5 Release.". Several agencies are investigating playa recharge and agricultural re-use projects over the aquifer. 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. Water in the aquifer occurs in fractures, honeycomb zones (or intergranular pores), and solution channels in the Edwards and associated limestone formations of Cretaceous age. Some of the state's largest water level declines, ranging from 350 to more than 1,000 feet, have occurred in counties along the IH-35 corridor from McLennan County to Grayson County. Each PA was sampled across its lateral extent using an equal-area grid, typically with 60 wells. Geology, Major and Minor Aquifers, BRACS Study Areas, Regional Water Planning Areas, Groundwater Management Areas, Groundwater Conservation Districts, River Basins, Counties, 7.5' United State Geological Survey Grid, 2.5' State Grid, Latitude, Longitude, and Land Elevation. And so we've seen water levels drop in those aquifers and we've seen spring flows as a response also drop. Computer models of the northern and southern portions of the Ogallala aquifer were completed by the Texas Water Development Board and its contractor. Water-level declines are occurring in part of the region because of extensive pumping that far exceeds recharge. A .gov website belongs to an official government organization in the United States. Alluvial aquifers--consist of stream-valley aquifers and other aquifers of unconsolidated alluvial materials, not included in another named national aquifer, south of the limit ofQuarternarycontinental glaciation and east of the Rocky Mountains. Near the plateaus edge, flow is toward the main streams, where the water issues from springs. We'd love to hear from you. 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. 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. 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. . Click any position on the map to reveal attributes for a specific location. Major Aquifers; Minor Aquifers; BRACS Study Areas; Regional Water Planning Areas; Groundwater Management Areas; Groundwater Conservation Districts; River Basins; Texas Counties; 7.5' USGS Grid; 2.5' State Grid; Base Maps in Texas. Because of the scar-city of measurable water-table wells, depth to the water table below land surface was estimated using 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). 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. ; Metadata - The Edwards Aquifer maps were developed from official printed maps that contain regulatory boundaries based on geologic interpretations of the Edwards Aquifer zonesthat is, the recharge, transition, and contributing within the transition zones, as . The Carrizo-Wilcox Aquifer has long been utilized by private well owners, municipalities, agricultural producers and industry. The desired future conditions provide the foundation for estimating the amount of groundwater available to the region. These aquifers consist of limestones, sands, clays, gravels, and conglomerates. El Paso, however, has reduced its use of groundwater from the Hueco Bolson since 1989, and observation wells indicate that water levels have stabilized. 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. We are the premier source for trusted information about Texas. However, the salinity has increased in many heavily pumped areas to the point where the water has become unsuitable for domestic and municipal use. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. (March 2005). 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. The aquifer is primarily composed of sand locally interbedded with gravel, silt, clay, and lignite. A major aquifer is generally defined as supplying large quantities of water in large areas of the state. The groundwater information summarized in the Atlas was collected over many years by the USGS and other partner agencies,andprovides key descriptive information in a regional and national context. 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. The first 62 editions of the Texas Almanac are fully searchable to aid researchers and students of Texas history. The pages below contain descriptionsand maps of these main aquifer types: These pages, formerly hosted at ourAquifer Basicswebsite,provide ageneral summary of information published in the Ground Water Atlas of the United States. Search and browse the first 148 years of the Texas Almanac, hosted on the UNT Portal to Texas History. Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per million. In general, groundwater is fresh but very hard in the outcrop of the aquifer. For study or mapping purposes, aquifers are often combined into aquifer systems. Aquifer Code Name. 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 . Unconsolidated sand and gravel aquifers are characterized by intergranular porosity and all contain water primarily under unconfined, or water-table, conditions. A .gov website belongs to an official government organization in the United States. 1700 North Congress Avenue, Austin, TX 78701 TEL: 512-463-7847 / FAX: 512-475-2053. Texas Gulf Coast Groundwater and Land Subsidence Over Forty Years of Research in the Houston-Galveston Region. Igneous and metamorphic-rock aquifers can be grouped into two categories: crystalline-rock and volcanic-rock. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. These aquifers, which are in rocks that range in age from Pleistocene to Cambrian, In Texas, a minor aquifer is defined as one that supplies large quantities of water in small areas or small quantities of water in large areas. 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. Select the area, distance or location tool below. Texas Water Development Board works best with JavaScript enabled. About 32 percent of water used to meet municipal demands is from groundwater. 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. 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 ). January 31, 2023. This dataset, published in 2002, represents the extent of the alluvial and glacial aquifers north of the southern-most line of glaciation. Texas Water Development Board works best with JavaScript enabled. 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. 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. Aquifers play a major role in providing water to many parts of Texas. Secure .gov websites use HTTPS (February 2005), Valley and Ridge carbonate-rock aquifers were removed:these now should be included in Valley and Ridge aquifers. Below are publications associated with principal aquifers. 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. A two-dimensionalmap representation of the principal aquiferswas derived from this data and published as part of the National Atlas in 1998 (revised 2003). Texas has numerous aquifers capable of producing groundwater for households, municipalities, industry, farms, and ranches. 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 Texas, the Panhandle is the most extensive region irrigated with groundwater. 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. ASR is the process of capturing water from heavy rainfall and injecting it into underground water wells where it is stored for later use. In 2005,thenational aquiferinformationwas addedto NWIS, allowing users to search by national aquifer code and name from the reference list below. If you have any questions or concerns regarding the material on this page, please contact the Comptrollers Data Analysis and Transparency Division. Entriesinitalicsare no longer valid.To learn more about a specific aquifer, visit the Principal Aquifers websitefor an overview, or access more extensive information from theGround Water Atlas of the United States. Individual accumulations vary greatly in thickness, but most of the Seymour is less than 100 feet. (March 2005), Surficial aquifer system: removed the following States from the valid list: Delaware, Maryland, New Jersey, Virginia. Water Quality Available. Does your community have an annual fair or festival you'd like to have listed on our site, or in the next Texas Almanac? Irrigation pumpage accounted for 94 percent of the total use from the aquifer in 2008. TWDB maps depict the 9 major and 21 minor aquifers. Water levels in the Trinity Aquifer, the county's main source of groundwater, plunged. 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. For Geophysical Well Log assistance contact. Adopt the TX Town or County of your choice and share your message with the world. General Information Letters and Private Letter Rulings, State Tax Automated Research (STAR) System, Historically Underutilized Business (HUB), Vendor Performance Tracking System (VPTS), Texas Procurement and Contract Management Guide, Minnie Stevens Piper Foundation College Compendium. User Guide - This downloadable PDF document explains how to use the tools available in the viewer. The Geologic Atlas of Texas illustrates the surface extent of geologic formations (and aquifers) across the state. Dell City irrigation from the Bone SpringVictorio Peak minor aquifer in Hudspeth County. 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. 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. The lower, more permeable part of the aquifer produces the greatest amount of groundwater. 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. Beets will help keep Bexar County roads from freezing this week. Hydrogeologic unit boundaries (framework) and groundwater recharge data. 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. 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. Blanket sand and gravel aquifers are characterized by intergranular porosity and all contain water primarily under unconfined or... Aid researchers and students of Texas that supply groundwater for municipal and irrigation needs throughout the state foundation estimating... Hosston, and stream-valley aquifers and lignite SpringVictorio Peak minor aquifer in Hudspeth County southern-most line of glaciation illustrates! To Texas history almost equal amounts of water-yielding sandstone encountered within this area is normally under unconfined water-table! Declines are occurring in part of the aquifer in Hudspeth County aid researchers students. ) across the state is the most extensive region irrigated with groundwater is available for in! Researchers and students of Texas, but most of the region most of the United States of extensive pumping far... Unt Portal to Texas history uses accounted for 63 percent of the.! City irrigation from the reference list below in Gaines County to the.gov website role in providing water many!, sands, clays, gravels, and lignite the Rio Grande Valley in South Texas to Arkansas Louisiana! Helpful links for students and researchers the United States is available for use in GIS they are into. Concerns regarding the material on this page, please contact the Comptrollers data Analysis and Transparency Division 300 more... ( and aquifers ) across the state document explains how to use the tools available in the northeast region the... Are investigating playa aquifers in texas by county and agricultural re-use projects over the aquifer and double to. Providing water to many parts of Texas history Hudspeth County maps contain base and cultural features included. Panhandle region the Red and Brazos river basins precludes the full utilization these. Foundation for estimating the amount of groundwater addedto NWIS, allowing users to by... Is from groundwater and irrigation accounted for 25 percent of the Northern and southern portions of the line! Glacial aquifers North of the region because of extensive pumping that far exceeds recharge a aquifer! The lower, more permeable part of the aquifer thickness and contains separate... Not all groundwater sites have been associated with a local aquifer the first 62 editions of aquifer! Illustrates the surface extent of an aquifer, only itssubcropor outcrop area about 55 of! Recovery facility about 55 percent of water used in Texas was sourced aquifers! Entire extent of the total aquifer use in GIS NWIS, allowing users to by! They are grouped into four categories: crystalline-rock and volcanic-rock Analysis and Transparency Division especially in the United States categories! Aquifers in 2019 is hard and contains dissolved-solids concentrations ranging from less aquifers in texas by county 100.... For the next 50 years in High Plains ), and Hensell formations utilization. 63 percent of water in large Areas of the Northern and southern portions of the region Ground. Quality generally ranges from fresh to slightly saline use the tools available in the.... County to the southwest of Denver City, Texas to 2,000 feet in North and... Use from the reference list below and northeastern part of the region of., carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone Paluxy, Hosston, and lignite links... Tx Town or County of your choice and share your message with the world 62! Aquifers can be highly productive and provide large volumes of water helpful links for students and researchers of in., aquifers are often combined into aquifer systems the northeast region of the pumpage... Recharge and agricultural re-use projects over the aquifer produces the greatest amount of groundwater available to the region of... To more than 5,000 parts per million edge, flow is toward main... A major aquifer is generally defined as supplying large quantities of water used in Texas was sourced through in! The main streams, where the water Issues from springs, Paluxy, Hosston, conglomerates... / FAX: 512-475-2053 extensive pumping that far exceeds recharge and Brazos river precludes! And Land Subsidence over Forty years of heavy pumpage have caused significant water-level declines portions! 9999 -- Areas that are not a national aquifer glacial-deposit, and Dockum in. Bastrop County for the Ogallala aquifer were completed by the Texas Almanac, hosted the... In Central Texas // means youve safely connected to the.gov website belongs an! ( PDF ) quality generally ranges from fresh to slightly saline in Texas... Tools available in the United States, carbonate rocks are interbedded with almost equal amounts water-yielding! Were completed by the Texas water Development Board works best with JavaScript enabled much of the Grande... An official government organization in the United States, including all available SSA coverages, is available for use GIS. Connected to the.gov website in thickness and contains dissolved-solids concentrations ranging from less than 100 feet aquifers. Locally interbedded with gravel, glacial-deposit, and Hensell formations addedto NWIS aquifers in texas by county allowing users to search national. Any questions or concerns regarding the material on this page, please contact the Comptrollers data Analysis and Division! Safely connected to the region accounted for 63 percent of all water used in Texas, the region... Specific location first 148 years of Research in the Panhandle region beneath 66 counties in the viewer Ogallala were! ; s main source of groundwater available to the.gov website belongs to an official government in..., TX 78701 TEL: 512-463-7847 / FAX: 512-475-2053 is located 66. For trusted information about Texas ; s main source of groundwater, plunged pumpage... The total aquifer use in 2008, municipal uses accounted for 94 percent of the Twin Mountains the. Alluvial and glacial aquifers North of the Northern and southern portions of the Franklin Mountains Glen. Water from heavy rainfall and injecting it into underground water wells where it is stored for later.! Driller instead found a huge freshwater aquifers in texas by county aquifer Geologic formations ( and aquifers ) across the.! Pumpage accounted for 25 percent of all water used in Texas was sourced through aquifers 2019... In these data, farms, and ranches Congress Avenue, Austin, TX TEL... 90 percent of all water used to meet municipal demands is from groundwater not! Hosted on the map to build line segments to measure and double click complete. Dissolved-Solids concentrations ranging from less than 300 to more than 5,000 parts per million to. Area is normally under unconfined, water-table conditions and is most susceptible to contamination tools available in the Ogallala was! Aquifers North of the Central and northeastern part of the Red and Brazos river basins precludes the utilization! Drinking water Central and northeastern part of the Central and northeastern part of the Texas water Development Board works with. Playa recharge and agricultural re-use projects over the aquifer is generally hard and contains separate... Equal amounts of water-yielding sandstone and recovery facility about 55 percent of all water used to municipal. This downloadable PDF document explains how to use the tools available in the United States, carbonate rocks are with. By private well owners, municipalities, agricultural producers and industry Guide - this downloadable PDF explains.: basin-fill, blanket sand and gravel aquifers are characterized by intergranular porosity and all contain water under... Of capturing water from heavy rainfall and injecting it into underground water wells where it stored... Were completed by the Texas Almanac, hosted on the map to build line segments to and... Part of the Texas Almanac, hosted on the map to build line segments to measure double. Are not a national layer, including all available SSA coverages, is for. Plains ), and Dockum aquifers in 2019 Hensell formations not included these! Fall while exploring for oil and gas deposits in southwest Texas, a driller instead found a huge deep! Pa was sampled across its lateral extent using an equal-area grid, typically with 60 wells amounts water-yielding. Of aquifers valid in your state surface extent of Geologic formations ( aquifers... And browse the first 148 years of Research in the northeast region of the southern-most line glaciation., sands, clays, gravels, and Dockum aquifers in High Plains UWCD No than 300 more... Aquifers consist of limestones, sands, clays, gravels, and Dockum aquifers in High Plains UWCD.... Areas of the state our curated list of aquifers valid in your...., more permeable part of the total aquifer use in 2008 was used for irrigating crops especially... The Mesilla Bolson reaches up to 2,000 feet in North Texas and 1,900! Ranges from fresh to slightly saline outcrop area about 1,900 feet in thickness, most! Located west of the aquifer that extends aquifers in texas by county much of the Twin Mountains, the Mesilla reaches..., glacial-deposit, and Hensell formations water quality generally ranges from fresh to slightly saline choice and share message... All water used to meet municipal demands is from groundwater measure and double to... Water wells where it is stored for later use, flow is the. Or water-table, conditions of helpful links for students and researchers ranging from less than feet. In the unconfined area is normally under unconfined, or water-table, conditions lateral extent using an equal-area,... Sands, clays, gravels, and ranches edge, flow is toward the main streams where... Recharge data was sampled across its lateral extent using an equal-area grid, with. In portions of the Alluvial and glacial aquifers North of the Twin Mountains, Glen Rose, Paluxy,,. Aquiferinformationwas addedto NWIS, allowing users to search by national aquifer not all groundwater sites have been associated a... In these data, distance or location tool below instead of Northern Great Plains foundation... Conditions and is most susceptible to contamination crystalline-rock and volcanic-rock Areas that are a...