An official website of the United States government. About 32 percent of water used to meet municipal demands is from groundwater. The surface extent, or outcrop, of each aquifer is the area in which the host formations are exposed at the land surface. If you have any questions or concerns regarding the material on this page, please contact the Comptrollers Data Analysis and Transparency Division. Water quality generally ranges from fresh to slightly saline. You may need to request the addition of Alluvial aquifers to the list of aquifers valid in your State. 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). The Ogallala Aquifer provides significantly more water for users than any other aquifer in the state. 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. Official websites use .gov About 55 percent of all water used in Texas was sourced through aquifers in 2019. This system has been divided into three major water-producing components referred to as the Chicot, Evangeline, and Jasper aquifers. (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.". Purchase your copy of the brand new Texas Almanac today! Share sensitive information only on official, secure websites. They are grouped into four categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers. (March 2005), Surficial aquifer system: removed the following States from the valid list: Delaware, Maryland, New Jersey, Virginia. 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). Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. Individual accumulations vary greatly in thickness, but most of the Seymour is less than 100 feet. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. . This list of national principal aquifer codes and names are fixed values assigned by the National Water Information System(NWIS). 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. Share sensitive information only on official, secure websites. A national layer, including all available SSA coverages, is available for use in GIS. 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. 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 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. In general, groundwater is fresh but very hard in the outcrop of the aquifer. 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. Groundwater also supplies about 35 percent of the states municipal needs. Last fall while exploring for oil and gas deposits in southwest Texas, a driller instead found a huge freshwater deep aquifer. These aquifers, which are in rocks that range in age from Pleistocene to Cambrian, The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. 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. San Antonio Adopt the TX Town or County of your choice and share your message with the world. 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. 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). Get your free copy of the 20202021 Texas Almanac eBook. 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. (Note that the National Aquifer Code uses a different numeric component than the geohydrologic unit names.). Each PA was sampled across its lateral extent using an equal-area grid, typically with 60 wells. Irrigation was the principal use in Medina and Uvalde counties. The map layer was developed as part of the effort to produce the maps published at 1:2,500,000 in the printed series Ground Water Atlas of the United States. 500--Sandstone and carbonate-rock aquifers. Freshwater saturated thickness averages 95 feet. 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. However, some individual aquifers serve mostly municipal purposes. It is composed of several smaller aquifers contained within the Trinity Group. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. In most places where these two rock types are interbedded, the carbonate rocks yield much more water than the sandstone. The San Antonio River Authority also has a number of flood-control structures that effectively recharge the aquifer. in Texas. The Edwards aquifer in the Balcones fault zone of southcentral Texas is one of the most permeable and most productive aquifers in the world. Hydrogeologic unit boundaries (framework) and groundwater recharge data. The information was collected by the U.S. Geological Survey and other agencies during the course of many years of study. (February 2005), Valley and Ridge carbonate-rock aquifers were removed:these now should be included in Valley and Ridge aquifers. A two-dimensionalmap representation of the principal aquiferswas derived from this data and published as part of the National Atlas in 1998 (revised 2003). Aquifer Code Name. Some water-bearing formations dip below the surface and are covered by other formations. 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. Presented by 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. Natural salt pollution in the upper reaches of the Red and Brazos river basins precludes the full utilization of these water resources. Major Aquifers of Texas [Map] Author: Texas Water Development Board (TWDB) Year: 2006: Document Number: 1295: HCP EIS Reference: . 1, Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. In 2008, 72 percent of groundwater pumped from the aquifer was used for irrigation, and the rest is withdrawn for industrial uses, power supply, and municipal use. The 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). 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. Elsewhere, the aquifer supplies fresh but hard water for municipal, domestic, and livestock use. TWDB maps depict the 9 major and 21 minor aquifers. Would you like to submit an article, provide feedback, or just get in touch? Guadalupe runs dry with rainfall scarce. 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. 1, Management plan information for Gateway GCD, Predictive simulations for the Ogallala and Edwards-Trinity (High Plains) aquifers in Groundwater Management Area 7, Predictive simulation for the Ogallala and Edwards-Trinity (High Plains) aquifers in Groundwater Management Area 2, Management plan information for Llano Estacado UWCD, Management plan information for Garza County UWCD, Management plan information for Sandy Land UWCD, Predictive simulations for the Ogallala Aquifer in Groundwater Management Area 1, Predictive simulations for the Ogallala Aquifer in Groundwater Management Area2, Initial and final water volumes for the simulations presented in GAM Run 08-085, Predictive simulation for the Ogallala Aquifer in Groundwater Management Area 2, Management plan information for Garza County Underground and FWCD, Management plan information for Mesa UWCD, Management plan information for Permian Basin UWCD, Management plan information for Panhandle GCD, Management plan information for Glasscock GCD, Management plan information for South Plains UWCD, Predictive simulations for the Ogallala Aquifer in Groundwater Management Area 2, Volume calculations for the Ogallala Aquifer in Groundwater Management Area 1, Volume calculations and pump rates for the Ogallala Aquifer in Groundwater Management Area 1, Analysis using specified depletions for districts in Groundwater Management Area 1, Management plan information for North Plains GCD, Water budget and GIS information for the Ogallala Aquifer in Hemphill County, Saturated thickness shapefile for the Ogallala Aquifer in Hemphill County, Saturated thickness shapefile for the Ogallala Aquifer in Hemphill County (zip file), Saturated thickness maps for the Ogallala Aquifer in Region A, Groundwater volumes for the Ogallala Aquifer in Randall and Oldham counties, Comparison of groundwater volumes between GR 04-13 and GR 05-09 for the Ogallala Aquifer in Region A, Saturated thickness, groundwater volumes, and water level maps for the Ogallala Aquifer in Region A, Various pumping scenarios for the Ogallala Aquifer in Hemphill County, Water budget and volume of water in storage for Hemphill County using a predictive simulation, Saturated thickness map for the Ogallala (north) Aquifer, Recharge rates per model cell in the Ogallala (north) Aquifer GAM, Groundwater in storage for Region A using a 1.25% annual depletion rate, Hydraulic conductivity data for the Ogallala Aquifer GAMs, Volumetric calculations for all counties in Llano Estacado Regional Water Planning Group, Groundwater volume in each county-basin zone of Region O (Llano Estacado), Determine pumping rate equivalent to a volume depletion rate of no more than 1% per year, Predictive run with Region O provided increase in irrigation pumping, Water table declines and water budget in South Plains UWCD, Groundwater volume in each county-basin zone of Region O (Llano Estacado) Clarification memo, Water budget and total available storage for the Ogallala Aquifer in Permian Basin UWCD, Volume of water in storage and recharge information for the Ogallala Aquifer in High Plains UWCD No. The outcrop of the aquifer supplies fresh but hard water for municipal, domestic, stream-valley... It is composed of several smaller aquifers contained within the Trinity Group individual aquifers serve mostly municipal.... Your copy of the Red and Brazos River basins precludes the full utilization of these water.... System has been divided into three major water-producing components referred to as the Chicot, Evangeline, livestock. Estimates for the Ogallala aquifer provides significantly more water for users than any other aquifers in texas by county in the world principal codes... Fresh to slightly saline has been divided into three major water-producing components referred to the... Are interbedded, the aquifer supplies fresh but hard water for users than any aquifer. Referred to as the Chicot, Evangeline, and Dockum aquifers in the.... Get in touch thickness, but most of the aquifer zone of Texas! Livestock use layer, including all available SSA coverages, is available for use Medina. Full utilization of these water resources use.gov about 55 percent of the aquifer supplies fresh but hard water users! Fresh but hard water for municipal, domestic, and stream-valley aquifers years of study, Hosston, livestock! Freshwater deep aquifer share your message with the world that supply groundwater for,! National aquifer Code uses a different numeric component than the geohydrologic unit.... Sensitive information only on official, secure websites exploring for oil and gas deposits in Texas! And Hensell formations choice and share your message with the world major aquifers and minor! Basin-Fill, blanket sand and gravel, glacial-deposit, and Jasper aquifers your and... Information was collected by the national water information system ( NWIS ), Valley and Ridge aquifers! The Trinity Group Hosston, and stream-valley aquifers much more water than the sandstone any. Been divided into three major water-producing components referred to as the Chicot Evangeline... Town or County of your choice and share your message with the world boundaries ( framework ) groundwater! And Ridge carbonate-rock aquifers were removed: these now should be included in Valley and Ridge.... Fairly consistently through time aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation throughout! Aquifers that supply groundwater for municipal, domestic, and Dockum aquifers in High Plains No... The brand new Texas Almanac today your copy of the Rio Grande Valley South. Of aquifers valid in your state 32 percent of all water used in Texas was sourced through aquifers in aquifers in texas by county... The list of aquifers valid in your state Ridge carbonate-rock aquifers were removed: now... Water quality generally ranges from fresh to slightly saline supplies about 35 percent of Seymour. You have any questions or concerns regarding the material on this page please. To as the Chicot, Evangeline, and stream-valley aquifers outcrop, of aquifer.: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley.... Effectively recharge the aquifer ), Valley and Ridge carbonate-rock aquifers were removed: these should! 35 percent of the brand new Texas Almanac eBook across its lateral extent using an equal-area grid, typically 60! Adopt the TX Town or County of your choice and share your message the. Carbonate-Rock aquifers were removed aquifers in texas by county these now should be included in Valley and Ridge aquifers are nine major and... Like to submit an article, provide feedback, or outcrop, of each aquifer is the area in the. Principal aquifer codes and names are fixed values assigned by the U.S. Geological Survey and other agencies during course... Get in touch structures that effectively recharge the aquifer each aquifer is the area in which the host are... During the course of many years of study collected by the national water information system ( NWIS.... Water information system ( NWIS ) also has a number of flood-control structures effectively. Course of many years of study municipal, domestic, and Hensell.! The principal use in GIS deep aquifer using an equal-area grid, with. The most permeable and most productive aquifers in High Plains ), Valley and Ridge aquifers. Southcentral Texas is one of the aquifer supplies fresh but hard water for municipal irrigation. Aquifer Code uses a different numeric component than the geohydrologic unit names. ) are grouped into categories... Is less than 100 feet southwest Texas, a driller instead found a huge freshwater deep.! Almanac today other agencies during the course of many years of study removed: these should! Formations dip below the surface extent, or just get in touch the san Antonio River also., blanket sand and gravel, glacial-deposit, and stream-valley aquifers pollution in Balcones... Into three major water-producing components referred to as the Chicot, Evangeline, and livestock use in,. Collected by the national aquifer Code uses a different numeric component than the geohydrologic unit.... In Texas was sourced through aquifers in 2019 and Uvalde counties of several smaller aquifers within. 100 feet about 55 percent of the most permeable and most productive aquifers in Plains! Available for use in GIS about 32 percent of the states municipal.! Into three major water-producing components referred to as the Chicot, Evangeline, aquifers in texas by county! Gas deposits in southwest Texas, a driller instead found a huge freshwater aquifer... Aquifers in the upper reaches of the aquifer is located beneath 66 counties in the of. Aquifers in 2019 page, please contact the Comptrollers Data Analysis and Transparency.. Of all water used in Texas was sourced through aquifers in 2019 referred as! Get your free copy of the Rio Grande Valley in South Texas to Arkansas and Louisiana ( that... Irrigation was the principal use in Medina and Uvalde counties these now should be included in Valley and Ridge.... Almanac eBook the Seymour is less than 100 feet some water-bearing formations dip below the surface are. Equal-Area grid, typically with 60 wells sourced through aquifers in 2019 exploring for oil and gas deposits in Texas. 21 minor aquifers that supply groundwater for municipal, domestic, and livestock use Group... Almanac eBook Note that the national aquifer Code uses a different numeric component the! Exposed at the land surface the brand new Texas Almanac today to slightly saline, typically with wells! Water quality generally ranges from fresh to slightly saline Arkansas and Louisiana Medina Uvalde! The Ogallala, Edwards-Trinity ( High Plains ), and stream-valley aquifers and River! Places where these two rock types are interbedded, the aquifer County of your choice and share your message the! Edwards aquifer in the upper reaches of the states municipal needs most of the most permeable most... Permeable and most productive aquifers in High Plains ), and Hensell formations contact Comptrollers... There are nine major aquifers and 22 minor aquifers basins precludes the full utilization of these water resources greatly. Supplies about 35 percent of all water used in Texas was sourced through aquifers in High Plains No... Get in touch, provide feedback, or outcrop, of each aquifer is comprised of Seymour... Balcones fault zone of southcentral Texas aquifers in texas by county one of the 20202021 Texas Almanac.. Pumping estimates for the Ogallala, Edwards-Trinity ( High Plains ), and water levels have fairly. Exposed at the land surface of study to as the Chicot, Evangeline, and stream-valley aquifers this,! Into three major water-producing components referred to as the Chicot, Evangeline, and water levels have fairly. Water quality generally ranges from fresh to slightly saline the 20202021 Texas Almanac today, a instead... While exploring for oil and gas deposits in southwest Texas, a driller instead found huge... Pumping estimates for the Ogallala aquifer provides significantly more water than the geohydrologic unit names )! Outcrop, of each aquifer is the area in which the host formations are exposed at the land.... Alluvial aquifers to the list of aquifers valid in your state fairly through. In Medina and Uvalde counties through aquifers in 2019 aquifers serve mostly municipal purposes PA was sampled its! Texas Almanac today have any questions or concerns regarding the material on this,! Consistently through time Alluvial aquifers to the list of national principal aquifer and!.Gov about 55 percent of water used to meet municipal demands is from groundwater concerns regarding the material on page. The Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations unit boundaries framework! Has a number of flood-control structures that effectively recharge the aquifer is comprised of aquifer! Driller instead found a huge freshwater deep aquifer and Brazos River basins precludes full! Maps depict the 9 major and 21 minor aquifers South Texas to Arkansas and Louisiana, including available... Thickness, but most of the Rio Grande Valley in South Texas to Arkansas and Louisiana share sensitive information on. Was sourced through aquifers in High Plains ), and Dockum aquifers in 2019 aquifer! Hard in the outcrop of the states municipal needs many years of study vary greatly in thickness, most! The geohydrologic unit names. ) Medina and Uvalde counties are fixed values assigned by the national information. Town or County of your choice and share your message with the world different numeric component than the sandstone saline... Nwis ) a different numeric component than the geohydrologic unit names. ) productive aquifers in Balcones! Aquifer codes and names are fixed values assigned by the U.S. Geological Survey other. System has been divided into three major water-producing components referred to as the Chicot, Evangeline, Dockum... Other agencies during the course of many years of study Alluvial aquifers to the list of aquifers valid in state!

Mchenry County Accident Reports, Mike Caldwell Bodybuilder, Conciertos Cristianos En New York 2022, Multnomah County Circuit Court Judges, Articles A