Irrigation accounts for more than half of the aquifer's discharge. About 60 percent of the approximately 16 million acre-feet of water used yearly in Texas is derived from underground formations that make up 9 major and 22 minor aquifers (for map of minor aquifers, click). The Texas Water Development Board (TWDB) specifically disclaims any and all liability for any claims or damages that may result from providing these data. These aquifers consist of limestones, sands, clays, gravels, and conglomerates. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. 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 . Increased salinity may be associated with evaporative concentration of groundwater in saline playa lakes in the southern portion of the aquifer, up flow of more saline groundwater from the underlying Dockum Aquifer and other sources./p>. To learn more, visit theNational Aquifer Code Reference List. 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. The aquifer is one of the most extensive and highly used groundwater resources in Texas. 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). Latitude (DD) Longitude (DD) County. Secure .gov websites use HTTPS A lock () or https:// means youve safely connected to the .gov website. Irrigation was the principal use in Medina and Uvalde counties. The recharge zone of the aquifer in Burnet County is approximately 18,011 acres. Official websites use .gov A two-dimensional map representation of the principal aquifers of the Nation is shown below. The Trinity Aquifer is a major aquifer that extends across much of the central and northeastern part of the state. 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. Texas has numerous aquifers capable of producing groundwater for households, municipalities, industry, farms, and ranches. This dataset, published in 2003, contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as polygons. Until recently, San Antonio was one of the largest cities in the world that relied solely on a single groundwater source for its municipal supply. Near the plateaus edge, flow is toward the main streams, where the water issues from springs. Irrigation pumping accounts for slightly more than half the water pumped, and pumping for municipal supply accounts for another 40 percent. Nearly 100 groundwater conservation districts work across the state to preserve Texas aquifers and their groundwater levels. Revisions to the reference list since it was first used by NWIS: Northern Great Plains aquifer system was removed:this umbrella term includes four national aquifers but is not considered a national aquifer itself. The appropriate component aquifer should be used instead of Northern Great Plains. Individual accumulations vary greatly in thickness, but most of the Seymour is less than 100 feet. Water levels in the Trinity Aquifer, the county's main source of groundwater, plunged. Most water from aquifers is used for irrigation. Water in the aquifer occurs in fractures, honeycomb zones (or intergranular pores), and solution channels in the Edwards and associated limestone formations of Cretaceous age. 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. 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. 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. 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 User Guide - This downloadable PDF document explains how to use the tools available in the viewer. This is one in a series of reports the Comptroller has prepared on water in Texas. For the distance tool click points on the map to build line segments to measure and double click to complete the measurement. (Note that the National Aquifer Code uses a different numeric component than the geohydrologic unit names.). 400--Carbonate-rock aquifers. Sulfate and chloride concentrations also tend to increase with depth. This dataset, published in 2002, represents the extent of the alluvial and glacial aquifers north of the southern-most line of glaciation. Most of the water pumped from the aquifer is used for irrigation. In the south, the Trinity includes the Glen Rose and underlying Travis Peak formations. January 31, 2023. He got the county through the crisis, and thanks to some heavy rains in 2012, the aquifer rebounded a little. 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. In Texas, the Panhandle is the most extensive region irrigated with groundwater. The component aquifers are Lower Tertiary, Upper Cretaceous, Lower Cretaceous, and Paleozoic. Although the Carrizo-Wilcox Aquifer reaches 3,000 feet in thickness, the freshwater saturated thickness of the sands averages 670 feet. Search and browse the first 148 years of the Texas Almanac, hosted on the UNT Portal to Texas History. Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. Click any position on the map to reveal attributes for a specific location. 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. 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). These aquifers, which are in rocks that range in age from Pleistocene to Cambrian, 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. The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. 600--Igneous and metamorphic-rock aquifers. 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. A two-dimensionalmap representation of the principal aquiferswas derived from this data and published as part of the National Atlas in 1998 (revised 2003). 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. Natural salt pollution in the upper reaches of the Red and Brazos river basins precludes the full utilization of these water resources. Surficial deposits of glacial origin (New Jersey) should be included in Sand and gravel aquifers (glaciated regions). Browse our curated list of helpful links for students and researchers. An official website of the United States government. In 2008, about 72 percent of pumpage from the aquifer was for municipal use. The Edwards aquifer in the Balcones fault zone of southcentral Texas is one of the most permeable and most productive aquifers in the world. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. For Geophysical Well Log assistance contact. About 32 percent of water used to meet municipal demands is from groundwater. It is the third most important groundwater resource in Texas after the Edwards and the Ogallala aquifers. 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