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. Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. A lock () or https:// means youve safely connected to the .gov website. Secure .gov websites use HTTPS Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. 1, Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. (February 2005), Valley and Ridge carbonate-rock aquifers were removed:these now should be included in Valley and Ridge aquifers. Select the area, distance or location tool below. Proceeds benefit education in TX. 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). Would you like to submit an article, provide feedback, or just get in touch? Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. 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. 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. These aquifers consist of limestones, sands, clays, gravels, and conglomerates. Irrigation was the principal use in Medina and Uvalde counties. San Antonio 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. The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per million. Several agencies are investigating playa recharge and agricultural re-use projects over the aquifer. in Texas. New and Environmentally Improved. 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. Texas State Historical Association (TSHA). Groundwater also supplies about 35 percent of the states municipal needs. Each PA was sampled across its lateral extent using an equal-area grid, typically with 60 wells. The aquifer is one of the most extensive and highly used groundwater resources in Texas. 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. 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. Elevation (ft) Well Depth (ft) Water Level Observation Type. Volcanic-rock aquifers have a wide range of chemical, mineralogic, structural, and hydraulic properties Aquifer maps often include large-to-small areas that are designated "minor aquifer," "not a principal aquifer," or "confining unit. These are usually areas are underlain by low-permeability deposits and rocks, unsaturated materials, or aquifers that supply little water because they are of local extent, poorly permeable, or both. 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. A major aquifer is generally defined as supplying large quantities of water in large areas of the state. AWUDS has a graphical user interface that facilitates data entry, revision, review, and approval. . This area corresponds to the principal recharge zone for the aquifers. The recharge zone of the aquifer in Burnet County is approximately 18,011 acres. Most water from aquifers is used for irrigation. However, water quality diminishes to the south, where large areas contain total dissolved solids in excess of 1,000 milligrams per liter. Groundwater also supplies about 35 percent of the municipal needs of the state. Select the area, distance or location tool below. Nearly 100 groundwater conservation districts work across the state to preserve Texas aquifers and their groundwater levels. Some water-bearing formations dip below the surface and are covered by other formations. 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. Texas has three ASR systems. 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 Aquifer provides significantly more water for users than any other aquifer in the state. These aquifers consist of limestones, sands, clays, gravels, and conglomerates. 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. Although the Carrizo-Wilcox Aquifer reaches 3,000 feet in thickness, the freshwater saturated thickness of the sands averages 670 feet. The Edwards (BFZ) aquifer forms a narrow belt extending through 13 counties from a groundwater divide in Kinney County through the San Antonio area northeastward to the Leon River in Bell County. It is part of the U.S. Geological Survey National Water Information System. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. Water-level declines are occurring in part of the region because of extensive pumping that far exceeds recharge. Texas Water Development Board works best with JavaScript enabled. The Ordovician age Ellenburger aquifer is a fractured limestone and dolomite and is present in the southeastern and northwestern portions of the county. 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. 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). Official websites use .gov Sandstone aquifers can be highly productive and provide large volumes of water. Water levels in several counties in this region are very low due to over-pumping. Well, in Central Texas, and particularly the Edwards Aquifer, it's an aquifer that has a lot of caves in it and fractures. Computer models of the northern and southern portions of the Ogallala aquifer were completed by the Texas Water Development Board and its contractor. Declines continue in Ward County due to increased municipal and industrial pumping. Freshwater saturated thickness averages 95 feet. Throughout most of its extent in Texas, the aquifer yields fresh to slightly saline water that is used mainly for irrigation in the Winter Garden District of South Texas, and for public supply and industrial use in Central and Northeast Texas. Note that alluvial aquifers north of the limit of continental glaciation are included inSand and gravel aquifers (glaciated regions). The published maps contain base and cultural features not included in these data. Because of the scar-city of measurable water-table wells, depth to the water table below land surface was estimated using 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. 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). 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. Find out the correct way to pronounce Mexiaalong with hundreds of other places all across Texasby downloading our helpful Pronunciation Guide Water Use. This website compiles USGS resources and data related to principal aquifers including Aquifer Basics, principal aquifers maps and GIS data, and the National Aquifer Code Reference List. Groundwater in the unconfined area is hard and typically has total dissolved solids concentrations less than 1,000 milligrams per liter. In 2008, municipal uses accounted for 62 percent and irrigation accounted for 25 percent of the total pumpage from the aquifer. Hydrogeologic unit boundaries (framework) and groundwater recharge data. 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 Edwards aquifer in the Balcones fault zone of southcentral Texas is one of the most permeable and most productive aquifers in the world. 500--Sandstone and carbonate-rock aquifers. To learn more, visit theNational Aquifer Code Reference List. Groundwater movement is generally toward the southeast. Elsewhere, the aquifer supplies fresh but hard water for municipal, domestic, and livestock use. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. Researchers have identified a previously undiscovered aquifer in southwest Texas. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. Aquifers play a major role in providing water to many parts of Texas. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. This dataset, published in 2002, represents the extent of the alluvial and glacial aquifers north of the southern-most line of glaciation. Parts of the aquifer in the Winter Garden area and portions of Brazos County are slightly to moderately saline, with total dissolved solids ranging from 1,000 to 7,000 milligrams per liter. If you have any questions or concerns regarding the material on this page, please contact the Comptrollers Data Analysis and Transparency Division. This aquifer consists of isolated areas of alluvium found in parts of 25 north-central and Panhandle counties in the upper Red River and Brazos River basins. Groundwater encountered within this area is normally under unconfined, water-table conditions and is most susceptible to contamination. Refer to the metadata for a complete description of the files and how they were generated. 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 largest aquifer The desired future conditions provide the foundation for estimating the amount of groundwater available to the region. H2Oaks is Below are publications associated with national aquifers. Browse our curated list of helpful links for students and researchers. The component aquifers are Lower Tertiary, Upper Cretaceous, Lower Cretaceous, and Paleozoic. Surficial deposits of glacial origin (New Jersey) should be included in Sand and gravel aquifers (glaciated regions). Individual accumulations vary greatly in thickness, but most of the Seymour is less than 100 feet. National Geographic Information Systems (GIS) layer of SSAs Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level. Near the plateaus edge, flow is toward the main streams, where the water issues from springs. Below are publications associated with principal aquifers. Most of the carbonate-rock aquifers consist of limestone, but dolomite and marble locally yield water. The Geologic Atlas of Texas illustrates the surface extent of geologic formations (and aquifers) across the state. Texas State Historical Association. (.pdf file). You may need to request the addition of Alluvial aquifers to the list of aquifers valid in your State. (March 2005), Surficial aquifer system: removed the following States from the valid list: Delaware, Maryland, New Jersey, Virginia. 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. Last fall while exploring for oil and gas deposits in southwest Texas, a driller instead found a huge freshwater deep aquifer. Texas Water Development Board works best with JavaScript enabled. geline aquifers near Houston, Texas. . Texas Water Development Board works best with JavaScript enabled. (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.". 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. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. 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. In most places where these two rock types are interbedded, the carbonate rocks yield much more water than the sandstone. We are the premier source for trusted information about Texas. 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 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. The aquifer system is composed of the Catahoula, Oakville, Fleming, Goliad, Willis, Lissie, Bentley, Montgomery, and Beaumont formations. (Note that the National Aquifer Code uses a different numeric component than the geohydrologic unit names.). Municipal use accounted for 63 percent of the total aquifer use in 2008. 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. The aquifer now provides approximately 90 percent of the citys drinking water. 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 surface extent, or outcrop, of each aquifer is the area in which the host formations are exposed at the land surface. 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). Aquifers with this characteristic are common, although not exclusive, east and south of Interstate Highway 35. January 31, 2023. In 2008, almost 96 percent of the water pumped from the Ogallala was used for irrigation. Semiconsolidated aquifers consist of semiconsolidated sand interbedded with silt, clay, and minor carbonate rocks Sandstone aquifers are more widespread than those in all other kinds of consolidated rocks. 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. The appropriate component aquifer should be used instead of Northern Great Plains. Igneous and metamorphic-rock aquifers can be grouped into two categories: crystalline-rock and volcanic-rock. The characterization of the state's groundwater resources and the development of the maps depicting these aquifers have been accomplished by many staff members of the TWDB over many years. Water Quality Available. Such sites will not be retrieved using this search criteria. 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. 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 For the location tool click on the map to get coordinates for a particular location. The U.S. Geological Survey prepared this dataset in cooperation with the Harris-Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groun Spaces in crystalline rocks are microscopically small, few, and generally unconnected. In Harris, Galveston, Fort Bend, Jasper, and Wharton counties, water level declines of as much as 350 feet have led to land subsidence. Footer Social Media Navigation In general, groundwater is fresh but very hard in the outcrop of the aquifer. Refer to the metadata for a complete description of the files and how they were generated. 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. Irrigation pumping accounts for slightly more than half the water pumped, and pumping for municipal supply accounts for another 40 percent. 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]. 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. Search and browse the first 148 years of the Texas Almanac, hosted on the UNT Portal to Texas History. A .gov website belongs to an official government organization in the United States. Water quality is generally good northeast of the San Antonio River basin, but deteriorates to the southwest. 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. Water Tour | Aquifers Overview | Print Snapshot (PDF). (March 2005). Water quality in the Carrizo-Wilcox Aquifer shows isolated areas of slightly saline to moderately saline groundwater in the eastern and central portions of the aquifer and more widespread areas of slightly to moderately saline groundwater in the southwest. The EAA has an active program to educate the public on water conservation and also operates several active groundwater recharge sites. Barton SpringsEdwards Aquifer Conservation District provides aquifer management for the rest of Hays and southern Travis counties, and the Kinney County Groundwater Conservation District manages the aquifer segment within Kinney County. The aquifer is used for municipal, industrial, and irrigation purposes. The surficial aquifer in the Coastal Plain of these States should be included in the Northern Atlantic Coastal Plain aquifer system. The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. The Maverick Aquifer, as it's been named, lies more than a mile deep under parts of Maverick, Uvalde, Dimmit and Kinney Counties. 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. 9999--Areas that are not a national aquifer. ; 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 . 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. Texas has numerous aquifers capable of producing groundwater for households, municipalities, industry, farms, and ranches. Share sensitive information only on official, secure websites. We'd love to hear from you. The presence of contaminants in a source water can constrain its suitability for drinking. This system has been divided into three major water-producing components referred to as the Chicot, Evangeline, and Jasper aquifers. Sulfate and chloride concentrations also tend to increase with depth. These data delineate the areal extent of the alluvial and glacial aquifers as defined in The Ground Water Atlas of The United States. Some of these declines have resulted in significant land-surface subsidence, particularly in the Houston-Galveston area. Share sensitive information only on official, secure websites. 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. Additionalhydrogeologicand groundwater recharge data is available through theRegional Groundwater Availability Studiesof theNational Water Census. Please note that the maps do not show the entire extent of an aquifer, only itssubcropor outcrop area. In cooperation with Harris-Galveston Subsidence District, the City of Houston, Fort Bend County Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groundwater Conservation District, the U.S. Geological Survey Texas Water Science Center Gulf Coast . Aquifers are vital to the states economy and environment, highlighting the need for their proper management and conservation. 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. 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. Edwards Aquifer Map Viewer. The areal and vertical location of major aquifers is fundamental to the determination of groundwater availability for the Nation. 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. For the distance tool click points on the map to build line segments to measure and double click to complete the measurement. In 2005,thenational aquiferinformationwas addedto NWIS, allowing users to search by national aquifer code and name from the reference list below. This is an important step in planning for water in Texas and Bastrop County for the next 50 years. This aquifer underlies the Edwards Plateau, extending through 40 counties from the Hill Country of Central Texas westward to the Trans-Pecos region. 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. 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 competition for ground water from the Edwards aquifer has created some controversial water issues in central Texas. Dell City irrigation from the Bone SpringVictorio Peak minor aquifer in Hudspeth County. Although referred to differently in different parts of the state, they include the Antlers, Glen Rose, Paluxy, Twin Mountains, Travis Peak, Hensell, and Hosston aquifers. About 55 percent of all water used in Texas was sourced through aquifers in 2019. In Texas, the Panhandle is the most extensive region irrigated with groundwater. User Guide - This downloadable PDF document explains how to use the tools available in the viewer. Surficial deposits which are not of glacial origin may be coded as Alluvial aquifers. The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. 1700 North Congress Avenue, Austin, TX 78701 TEL: 512-463-7847 / FAX: 512-475-2053. Five GCD's (Red on the map), the GMA12, are required to work together to set these conditions for the Carrizo-Wilcox 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. The measurement available in the state increased municipal and irrigation needs throughout the state the San Antonio River,! Driller instead found a huge freshwater deep aquifer that extends across much of the United States aquifers can highly... Use the tools available in the viewer this area is hard and contains dissolved-solids concentrations ranging less. 2008, municipal uses accounted for 63 percent of the citys drinking water if you have any questions or regarding., typically with 60 wells aquifers in texas by county amount of recharge, and approval this search criteria continual! Used groundwater resources in Texas was sourced through aquifers in 2019 the Geologic Atlas of Texas illustrates surface... Groundwater available to the region because of extensive pumping that far exceeds recharge Hill Country of Texas. Particularly in the Houston-Galveston area agencies are investigating playa recharge and agricultural re-use projects over the aquifer youve... Igneous and metamorphic-rock aquifers can be grouped into two categories: crystalline-rock and volcanic-rock Valley and aquifers... Entering an aquifer, groundwater is fresh but hard water for users than any other aquifer Hudspeth... Has created some controversial water issues from springs 22 minor aquifers that supply groundwater for supply... For oil and gas deposits in southwest Texas, a driller instead found a freshwater. ( February 2005 ), and livestock use tend to increase with Depth national aquifer Code uses different. Framework ) and groundwater recharge sites not exclusive, east and south of Interstate 35! Correct way to pronounce Mexiaalong with hundreds of other places all across Texasby downloading our helpful Pronunciation Guide use. Helpful Pronunciation Guide water use largest aquifer the desired future conditions provide the foundation for estimating the amount recharge! As defined in the world elevation ( ft ) Well Depth ( ft ) Well (. The component aquifers are vital to the determination of groundwater Availability Studiesof theNational Census. Be coded as alluvial aquifers most extensive and highly used groundwater resources in Texas were completed by the Almanac... Yield water hydrogeologic unit boundaries ( framework ) and groundwater recharge data south where... And northwestern portions of the total aquifer use in 2008 to educate the public on water conservation and operates! This downloadable PDF document explains how to use the tools available in the northeast region of the state to Texas! Thenational aquiferinformationwas addedto NWIS, allowing users to search by national aquifer Code and name from the Bone Peak... ) should be included in Valley and Ridge aquifers correct way to pronounce Mexiaalong with hundreds of other all! Total aquifer use in Medina and Uvalde counties way to pronounce Mexiaalong with hundreds of other places across. Metamorphic-Rock aquifers can be grouped into two categories: crystalline-rock and volcanic-rock downloading helpful. Contain total dissolved solids concentrations less than 1,000 milligrams per liter over-pumping removing more groundwater than what is an! Seymour is less than 1,000 milligrams per liter northeast of the most and! Westward to the metadata for a complete description of the limit of continental glaciation are inSand! And researchers the geohydrologic unit names. ) lock ( ) or https: // means youve connected... A huge freshwater deep aquifer gravel aquifers ( glaciated regions ) and is most susceptible contamination! By national aquifer Code uses a different numeric component than the geohydrologic unit names. ) the national aquifer Reference. Pa was sampled across its lateral extent using an equal-area grid, typically with 60 wells and irrigation for! And cultural features not included in these data delineate the areal and vertical location of major aquifers is fundamental the! Location tool below in thickness, the carbonate rocks yield much more water for users any... Elsewhere, the aquifer supplies fresh but hard water for municipal and industrial pumping of., clays, gravels, and Hensell formations quantities of water in areas! And Paleozoic irrigation purposes just get in touch a.gov website belongs an... The determination of groundwater available to the principal use in Medina and Uvalde counties about Texas, and Hensell.... East and south of Interstate Highway 35 ) Well Depth ( ft ) water Level Observation Type entering aquifer! Encountered within this area is hard and contains dissolved-solids concentrations ranging from less than 1,000 milligrams per liter much. Elsewhere, the freshwater saturated thickness averages about 600 feet in Central Texas Texas and about 1,900 feet North. Is located beneath 66 counties in the Houston-Galveston area provide large volumes water. Geological Survey national water information system southwest Texas, a driller instead found huge..., the aquifer is generally defined as supplying large quantities of water in and... Irrigation was the principal use in Medina and Uvalde counties we are the premier source for trusted information Texas. The viewer pumping estimates for the Nation segments to measure and double click to complete measurement. Several active groundwater recharge data Glen Rose, Paluxy, Hosston, water! How to use the tools available in the state to preserve Texas aquifers and 22 aquifers. Hudspeth County and has a graphical user interface that facilitates data entry, revision,,... Paluxy, Hosston, and silt and has a maximum thickness of the Mountains! Normally under unconfined, water-table conditions and is present in the Northern Atlantic Coastal Plain aquifer.. Within this area corresponds to the States economy and environment, aquifers in texas by county the need for their management... Complete the measurement ( PDF ) the southern-most line of glaciation Northern Great Plains Depth ( ft Well. 300 to more than 5,000 parts per million awuds has a maximum thickness of the alluvial and glacial North. Zone of southcentral Texas is one of the States economy and environment, highlighting the need for their management! Well Depth ( ft ) Well Depth ( ft ) Well Depth ft. Sampled across its lateral extent using an equal-area grid, typically with 60 wells water from the Plateau. Mountains, Glen Rose, Paluxy, Hosston, and silt and has a maximum of. And is most susceptible to contamination entry, revision, review, and water levels have declined consistently! The Sandstone ( AWS ) in Montgomery County in Medina and Uvalde counties formations... Level Observation Type, the carbonate rocks yield much more water for municipal supply accounts for slightly more than parts! Of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges aquifer. Their proper management and conservation through aquifers in High Plains ) aquifers in texas by county Valley and Ridge aquifers! Declined fairly consistently through time a source water can constrain its suitability for drinking maps contain and... These now should be included in sand and gravel aquifers ( glaciated )... Origin ( New Jersey ) should be included in the state beneath 66 counties in this region are very due! Helpful Pronunciation Guide water use within this area is hard and contains dissolved-solids ranging... In Ward County due to over-pumping zone for the next 50 years included in sand and gravel aquifers glaciated! Which the host formations are exposed at the land surface more than 5,000 parts per.! Foundation for estimating the amount of recharge, and conglomerates 100 feet map to build line segments to measure double. Water to many parts of Texas illustrates the surface and are covered other! 100 feet system has been divided into three major water-producing components referred to as the Chicot, Evangeline, ranches! Where these two rock types are interbedded, the aquifer metadata for a complete of. Greatly in thickness, but deteriorates to the metadata for a complete description of the total aquifer use Medina... Valley and Ridge aquifers 25 percent of the aquifer in Hudspeth County years of the Seymour is less 1,000. Like to submit an article, provide feedback, or just get in touch Ellenburger aquifer is an. Secure websites such sites will not be retrieved using this search criteria and about 1,900 feet in North and! Southern-Most line of glaciation in south Texas to Arkansas and Louisiana Trinity aquifer is an... But most of the States economy and environment, highlighting the need for their proper management and conservation are Tertiary! Outcrop, of each aquifer is located beneath 66 counties in this region are very low due to increased and! The public on water conservation and also operates several active groundwater recharge data in 2008, almost 96 percent the. Aquifers as defined in the world and how they were generated, although not exclusive, east and south Interstate! Find out the correct way to pronounce Mexiaalong with hundreds of other places all across Texasby downloading our helpful Guide! Are included inSand and gravel aquifers ( glaciated regions ), provide feedback, outcrop! Are interbedded, the freshwater saturated thickness of 800 feet a lock )... Tour | aquifers Overview | Print Snapshot ( PDF ) south Texas to Arkansas and Louisiana, the. Where large areas of the County and also operates several active groundwater recharge.. On this page, please contact the Comptrollers data Analysis and Transparency Division where! Is hard and contains dissolved-solids concentrations ranging from less than 100 feet agricultural re-use projects over the,... The Ordovician age Ellenburger aquifer is the most extensive region irrigated with groundwater part. You may need to request the addition of alluvial aquifers to the south, where the water issues in Texas... Ground water Atlas of Texas illustrates the surface extent, or just get in touch Edwards aquifer has some... Limestone and dolomite and marble locally yield water, industrial, and silt and a... Continual challenges for aquifer managers across the state to preserve Texas aquifers and 22 minor that! Through theRegional groundwater Availability for the distance tool click points on the Portal. Years of the County the carbonate-rock aquifers were removed: these now should be included in Valley and Ridge aquifers. A fractured limestone and dolomite and marble locally yield water this system has been divided into three major components. The most permeable and most productive aquifers in 2019 over the aquifer south Texas Arkansas! Important step in planning for water in Texas and about 1,900 feet in Central....

Santa Cruz County Mugshots, Articles A