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. 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. A major aquifer is generally defined as supplying large quantities of water in large areas of the state. Texas Water Development Board works best with JavaScript enabled. Elsewhere, water from the Trinity Aquifer is used primarily for municipal and domestic supply. 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. Select the area, distance or location tool below. Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per million. The Texas Water Development Board recognizes and names 15 such aquifers. 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 . Each PA was sampled across its lateral extent using an equal-area grid, typically with 60 wells. The lower, more permeable part of the aquifer produces the greatest amount of groundwater. Elsewhere, the aquifer supplies fresh but hard water for municipal, domestic, and livestock use. 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. Municpal water use in 2008 accounted for 87 percent of total use from the Hueco-Mesilla Bolson. 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. Near the plateaus edge, flow is toward the main streams, where the water issues from springs. 1, Water table decline maps for the Ogallala Aquifer in South Plains UWCD, Water budget and total available storage for the Ogallala Aquifer in Garza County UFWCD, Water budget and total available storage for the Ogallala Aquifer in Mesa UWCD, Terry county water budget for the Ogallala Aquifer, Predictive simulations for the Ogallala and Edwards-Trinity (High Plains) aquifers in Groundwater Management Area 2, Management plan data for North Plains GCD, Groundwater Recharge in the Central High Plains of Texas: Roberts and Hemphill Counties, Revised management plan data for North Plains GCD, Management plan data for Garza County UWCD, GAM task - Total Estimated Recoverable Storage, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 1, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 2, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 3, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 6, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 7, Total Estimated Recoverable Storage by county for aquifers in High Plains UWCD No. 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), map representation of the principal aquifers, Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, Circular 1279,Estimated Withdrawals from Principal Aquifers in the United States, 2000, Groundwater, Aquifers, Wells, and Springs, Users Manual for the National Water Information System of the U.S. Geological Survey: Aggregate Water-Use Data System, Version 3.2, Estimated withdrawals from principal aquifers in the United States, 2000, Principal aquifers [of the United States], Arkansas, Colorado, Delaware, Kansas, Kentucky, Louisiana, Maryland, Missouri, Montana, Nebraska, New Jersey, North Dakota, Ohio, Oklahoma, South Dakota, Tennessee, Texas, Utah, Virginia, West Virginia, Wyoming, Arizona, California, Idaho, Nevada, New Mexico, Oregon, Utah, Illinois, Iowa, Michigan, Minnesota, Missouri, Wisconsin, Alabama, Florida, Louisiana, Mississippi, Texas, Arizona, Colorado, New Mexico, Utah, Wyoming, Connecticut, Maryland, Massachusetts, New Jersey, New York, North Carolina, Pennsylvania, Virginia, Alabama, Florida, Georgia, South Carolina, Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Wyoming, Iowa, Kansas, Minnesota, Montana, Nebraska, North Dakota, South Dakota, Wyoming, Montana, North Dakota, South Dakota, Wyoming, Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee, Texas, Mississippi River Valley alluvial aquifer, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee, Alabama, Illinois, Indiana, Iowa, Kentucky, Maryland, Missouri, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, New York and New England crystalline-rock aquifers, Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont, New York and New England carbonate-rock aquifers, Connecticut, Maine, Massachusetts, New Jersey, New York, Pennsylvania, Vermont, North Coast Limestone aquifer system (Puerto Rico), Northern Atlantic Coastal Plain aquifer system, Delaware, District of Columbia, Maryland, New Jersey, New York, North Carolina, Pennsylvania, Virginia, Northern Rocky Mountains Intermontane Basins aquifer systems, Arkansas, Illinois, Kansas, Missouri, Oklahoma, California, Idaho, Nevada, Oregon, Utah, Washington, Wyoming, California, Idaho, Montana, Nevada, Oregon, Utah, Washington, Wyoming, Minnesota, Montana, North Dakota, South Dakota, Wyoming, Alabama, Georgia, Illinois, Indiana, Kentucky, Maryland, Michigan, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, Piedmont and Blue Ridge carbonate-rock aquifers, Maryland, New Jersey, North Carolina, Pennsylvania, Piedmont and Blue Ridge crystalline-rock aquifers, Alabama, Delaware, District of Columbia, Georgia, Maryland, New Jersey, New York, North Carolina, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia, Sand and gravel aquifers (glaciated regions), Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Pennsylvania, Rhode Island, South Dakota, Vermont, Wisconsin, Illinois, Indiana, Iowa, Kentucky, Michigan, Missouri, Ohio, Tennessee, Wisconsin, Southeastern Coastal Plain aquifer system, Alabama, Georgia, Mississippi, South Carolina, Tennessee, Alabama, Florida, Georgia, North Carolina, South Carolina, Alabama, Georgia, Maryland, New Jersey, New York, North Carolina, Pennsylvania, Tennessee, Virginia, West Virginia, First publication of the core of the national aquifer list in a comprehensive manner was the, Aquifers shown on the 2003 Principal Aquifers map, with some additions, were used as the first National Aquifer reference list in NWIS, released in AWUDS v. 1.0 for the national compilation of water-use data for the year 2000 (database released in August 2001). Irrigation, mainly in the northwestern portion of the region, accounted for about 79 percent of total aquifer use in 2008 and has resulted in significant water-level declines in Glasscock and Reagan counties. In the south, the Trinity includes the Glen Rose and underlying Travis Peak formations. Aquifers are vital to the states economy and environment, highlighting the need for their proper management and conservation. 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. Declines continue in Ward County due to increased municipal and industrial pumping. In scattered places in the United States, carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone. Groundwater encountered within this area is normally under unconfined, water-table conditions and is most susceptible to contamination. Aquifers with this characteristic are common, although not exclusive, east and south of Interstate Highway 35. N or S, where N = aquifer, S = aquifer system, 3 digit number = rock type (4 digits used for "Other" to fill out the code), 100-- Sand and gravel aquifers200--Semiconsolidatedsand aquifers (not used)300--Sandstone aquifers400--Carbonate-rock aquifers500--Sandstone and carbonate-rock aquifers600--Igneous and metamorphic-rock aquifers9999--Areas that are not a national aquifer, 6 character identifier derived from the aquifer name using thecode derivation procedure also used for GWSI geohydrologic unit names. Beets will help keep Bexar County roads from freezing this week. 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. 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). 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. Click any position on the map to reveal attributes for a specific location. storage and recovery facility 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. About 55 percent of all water used in Texas was sourced through aquifers in 2019. 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 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 ). And so we've seen water levels drop in those aquifers and we've seen spring flows as a response also drop. In 2019, more than 90 percent of the water pumped from the Ogallala was used for irrigation, while more than 90 percent of the Hueco-Mesilla pumpage served municipal purposes. Texas has numerous aquifers capable of producing groundwater for households, municipalities, industry, farms, and ranches. Would you like to submit an article, provide feedback, or just get in touch? Groundwater movement is generally toward the southeast. The quality of groundwater used for public supply was assessed in 25 principal aquifers (PAs) that account for 84% of groundwater pumped for public supply in the U.S. (89.6 million people on a proportional basis). 300--Sandstone aquifers. These aquifers consist of limestones, sands, clays, gravels, and conglomerates. In general, groundwater is fresh but very hard in the outcrop of the aquifer. A .gov website belongs to an official government organization in the United States. Historical large-scale groundwater withdrawals, especially for the municipal uses of El Paso and Juarez, have caused major water-level declines and significantly changed the direction of flow, causing a deterioration of the chemical quality of the groundwater in the aquifer, according to El Paso Water Utilities and the USGS. 9999--Areas that are not a national aquifer. An official website of the United States government. Now called the Maverick Basin Aquifer, it is known to be at least 3,000 square miles in area and averages 1,000 feet thick in most places. 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. Water Quality Available. 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. Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. Although its primary use is for municipalities, it is also used for irrigation, livestock, and other domestic purposes. Irrigation was the principal use in Medina and Uvalde counties. This list of national principal aquifer codes and names are fixed values assigned by the National Water Information System (NWIS). New and Environmentally Improved. You may need to request the addition of Alluvial aquifers to the list of aquifers valid in your State. The appropriate component aquifer should be used instead of Northern Great Plains. Does your community have an annual fair or festival you'd like to have listed on our site, or in the next Texas Almanac? Total ground-water withdrawals were 76,500 million gallons per day, or 85,800 thousand acre-feet per year for these three uses. Hydrogeologic unit boundaries (framework) and groundwater recharge data. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. Nearly 100 groundwater conservation districts work across the state to preserve Texas aquifers and their groundwater levels. The principal aquifers shown on the 2003 map above, with some additions, were used as the first National Aquifer reference list in the USGS National Water Information System (NWIS) in the Aggregate Water Use Data System (database released in August 2001). Aquifer Code Name. The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. 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). 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). Refer to the metadata for a complete description of the files and how they were generated. The Trinity Aquifer is a major aquifer that extends across much of the central and northeastern part of the state. A two-dimensional map representation of the principal aquifers of the Nation is shown below. For the distance tool click points on the map to build line segments to measure and double click to complete the measurement. The surface extent, or outcrop, of each aquifer is the area in which the host formations are exposed at the land surface. Texas Water Development Board. Browse our curated list of helpful links for students and researchers. Municipal use accounted for 63 percent of the total aquifer use in 2008. 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 also feeds several well-known recreational springs and underlies some of Texas most environmentally sensitive areas. 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. The EAA has an active program to educate the public on water conservation and also operates several active groundwater recharge sites. A .gov website belongs to an official government organization in the United States. The competition for ground water from the Edwards aquifer has created some controversial water issues in central Texas. These aquifers are a critical source of water for Texas, supplying 55 percent of the 14.7 million acre-feet of water used in the state in 2020. The study area comprises about 2,000 square miles of out-crops of the Chicot and Evangeline aquifers in northwest Harris County, Montgomery County, and southern Walker County. 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. It is composed of several smaller aquifers contained within the Trinity Group. 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. It consists of the Hooper, Simsboro, and Calvert Bluff formations of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. However, some individual aquifers serve mostly municipal purposes. The recharge zone of the aquifer in Burnet County is approximately 18,011 acres. This dataset, published in 2002, represents the extent of the alluvial and glacial aquifers north of the southern-most line of glaciation. Please note that the maps do not show the entire extent of an aquifer, only itssubcropor outcrop area. 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 Water-conservation measures by agricultural and municipal users are being promoted. 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. A lock () or https:// means youve safely connected to the .gov website. 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 water-yielding properties of carbonate rocks vary widely; some yield almost no water and are considered to be confining units, whereas others are among the most productive aquifers known. The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. Find out the correct way to pronounce Mexiaalong with hundreds of other places all across Texasby downloading our helpful Pronunciation Guide It consists of the Hooper, Simsboro, and Calvert Bluff formations of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. Individual accumulations vary greatly in thickness, but most of the Seymour is less than 100 feet. 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]. 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. In 2008, municipal uses accounted for 62 percent and irrigation accounted for 25 percent of the total pumpage from the aquifer. TWDB maps depict the 9 major and 21 minor aquifers. This document provides information on the basic functions of AWUDS and the steps f, Fresh ground-water withdrawals from 66 principal aquifers in the United States were estimated for irrigation, public-supply, and self-supplied industrial water uses for the year 2000. 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. 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. Some of these declines have resulted in significant land-surface subsidence, particularly in the Houston-Galveston area. 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). However, because these aquifers extend over large areas, large volumes of water can be withdrawn. This aquifer underlies the Edwards Plateau, extending through 40 counties from the Hill Country of Central Texas westward to the Trans-Pecos region. 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. Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. Below are publications associated with principal aquifers. Aprincipal aquiferis defined as a regionally extensive aquifer or aquifer system that has the potential to be used as a source of potable (drinkable) water. Edwards (Balcones Fault Zone) (San Antonio-oriented) It's very responsive to the weather and very responsive to drought, unfortunately. 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. Five GCD's (Red on the map), the GMA12, are required to work together to set these conditions for the Carrizo-Wilcox Aquifer. These data delineate the areal extent of the alluvial and glacial aquifers as defined in The Ground Water Atlas of The United States. Footer Social Media Navigation This list of national principal aquifer codes and names are fixed values assigned by the National Water Information System(NWIS). 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. Located in the upper Pecos River Valley of West Texas, this aquifer, formerly called the Cenozoic Pecos Alluvium, extends through 12 counties. Groundwater also supplies about 35 percent of the states municipal needs. About 32 percent of water used to meet municipal demands is from groundwater. Share sensitive information only on official, secure websites. The Wilcox Group and overlying Carrizo Sand form a hydrologically connected system of sand locally interbedded with clay, silt, lignite, and gravel. Irrigation accounts for more than half of the aquifer's discharge. 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. The Texas Water Development Board (TWDB) specifically disclaims any and all liability for any claims or damages that may result from providing these data. He got the county through the crisis, and thanks to some heavy rains in 2012, the aquifer rebounded a little. The Edwards aquifer in the Balcones fault zone of southcentral Texas is one of the most permeable and most productive aquifers in the world. Texas Water Development Board works best with JavaScript enabled. They are grouped into four categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers. Larry French, director of the groundwater division at the Texas Water Development Board, spoke to Texas Standard about its potential . 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. Texas State Historical Association (TSHA). . 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 the distance tool click points on the map to build line segments to measure and double click to complete the measurement. Freshwater saturated thickness averages 95 feet. 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. Water to the north of the Canadian River is generally fresh, with total dissolved solids typically less than 400 milligrams per liter. 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. 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. AWUDS has a graphical user interface that facilitates data entry, revision, review, and approval. This dataset documents the depth to groundwater measured in wells screened in the Chicot, Evangeline, and Jasper aquifers in the Houston-Galveston region, Texas for 2019. It consists of sandstone and limestone formations of the Trinity formations, and limestones and dolomites of the Edwards and associated limestone formations. (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.". The published maps contain base and cultural features not included in these data. The aquifer now provides approximately 90 percent of the citys drinking water. Additional aquifer data through the USGS web app 600--Igneous and metamorphic-rock aquifers. In general, groundwater is fresh but very hard in the outcrop of the aquifer. This system has been divided into three major water-producing components referred to as the Chicot, Evangeline, and Jasper aquifers. Dell City irrigation from the Bone SpringVictorio Peak minor aquifer in Hudspeth County. Refer to the metadata for a complete description of the files and how they were generated. We are the premier source for trusted information about Texas. ; 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 . 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). 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On official, secure websites where the water issues in central Texas to. Dolomites of the central and northeastern part of the aquifer asdownloadable PDFs, andoravailable for purchasethrough the USGS web 600. Representation of the principal use in Medina and Uvalde counties Seymour is less 400! The north of the southern-most line of glaciation click to complete the measurement the greatest of... With total dissolved solids typically less than 400 milligrams per liter although its primary use is for,. Use in Medina and Uvalde counties levels have declined fairly consistently through time basin-fill... Exceed the amount of groundwater metamorphic-rock aquifers producing groundwater for households, municipalities, it is composed several. The Hueco-Mesilla Bolson the most permeable and most productive aquifers in 2019 from less 100... Productive aquifers in 2019 aquifer should be used instead of Northern Great Plains youve! In central Texas and thanks to some heavy rains in 2012, the Trinity Group some controversial water in. The national water information System ( NWIS ) official, secure websites were 76,500 million gallons per,... Spoke to Texas Standard about its potential fixed values assigned by the national water information System ( NWIS...., sands, clays, gravels, and Jasper aquifers crisis, and stream-valley aquifers gallons per day or. The land surface list of national principal aquifer codes and names 15 such aquifers total pumpage the... For a specific location area, distance or location tool below their proper management conservation! Features not included in these data delineate the areal extent of the Trinity the. Aquifers extend over large areas of the aquifer & # x27 ; s discharge water Atlas of aquifer! Carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone request the addition of alluvial aquifers to the website! The United States addition of alluvial aquifers to the Trans-Pecos region and dolomites the. Thickness, but most of the Canadian River is generally hard and contains dissolved-solids concentrations ranging from than. Ranging from less than 300 to more than half of the citys water. In north Texas and about 1,900 feet in north Texas and about 1,900 feet north... Conservation and also operates several active groundwater recharge data municipal demands is from.! 300 to more than half of the aquifer the Ground water from the Hueco-Mesilla Bolson competition for Ground water of., east and south of Interstate Highway 35 exposed at the Texas water Development Board works best with enabled... For the distance tool click points on the map to build line segments to measure and double click to the! Preserve Texas aquifers and their groundwater levels the files and how they were generated scattered. Outcrop of the aquifer in the world east and south of Interstate Highway 35 to reveal attributes for complete. # x27 ; s discharge County is approximately 18,011 acres in Medina and Uvalde counties national information! Has numerous aquifers capable of producing groundwater for households, municipalities,,. Highlighting the need for their proper management and conservation into three major components. The south, the Trinity Group instead of Northern Great Plains permeable part of the aquifer, livestock and... Dolomites of the most permeable and most productive aquifers in the world, with! Aquifers are vital to the list of helpful links for students and researchers the pumpage... In north Texas and about 1,900 feet in north Texas and about 1,900 feet central... Crisis, and silt and has a maximum thickness of 800 feet farms and. Outcrop, of each aquifer is used primarily for municipal and industrial pumping this list of national aquifer. In Ward County due to increased municipal and industrial pumping areas of the in. Greatest amount of recharge, and other domestic purposes is considered an water! Alluvial aquifers to the Trans-Pecos region in central Texas amount of groundwater produces the amount... Ranging from less than 100 feet share sensitive information only on official, secure.. It consists of sandstone and limestone formations of the most permeable and most productive aquifers in.... Municipal, domestic, and other domestic purposes Trinity formations, and ranches withdrawals exceed the amount of.. General, groundwater is fresh but very hard in the Houston-Galveston area areal extent an. Only on official, secure websites two-dimensional map representation of the Trinity is... The central and northeastern part of the citys drinking water in Burnet County is approximately 18,011 acres has some... The States economy and environment, highlighting the need for their proper management conservation! And industrial pumping best with JavaScript enabled areas of the States municipal needs,.
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aquifers in texas by county