aquifers in texas by county

We are the premier source for trusted information about Texas. H2Oaks is 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. 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. Select the area, distance or location tool below. Aquifers are vital to the states economy and environment, highlighting the need for their proper management and conservation. Located west of the Franklin Mountains, the Mesilla Bolson reaches up to 2,000 feet in thickness and contains three separate water-producing zones. 6 character identifier derived from the aquifer name using the code derivation procedure also used for GWSI geohydrologic unit names. Municipal use accounted for 63 percent of the total aquifer use in 2008. Water Use. 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. For study or mapping purposes, aquifers are often combined into aquifer systems. Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per million. The published maps contain base and cultural features not included in these data. Additional aquifer data through the USGS web app Most of the carbonate-rock aquifers consist of limestone, but dolomite and marble locally yield water. 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. They are grouped into four categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers. The surface extent, or outcrop, of each aquifer is the area in which the host formations are exposed at the land surface. About 55 percent of all water used in Texas was sourced through aquifers in 2019. 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. 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). In 2005,thenational aquiferinformationwas addedto NWIS, allowing users to search by national aquifer code and name from the reference list below. Conservation districts are promoting more-efficient irrigation techniques, and market-based, voluntary transfers of unused agricultural water rights to municipal uses are more common. AWUDS has a graphical user interface that facilitates data entry, revision, review, and approval. 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), Texas Aquifers Study: Groundwater Quantity, Quality, Flow, and Contributions to Surface Water, An Investigation of Clouds and Precipitation for the Texas High Plains, Quantity and Chemical Quality of Low Flow in the Prairie Dog Town Fork Red River near Wayside, Texas, February 6-9,1968, Evaluating the Ground-Water Resources of the High Plains of Texas, Volumes 1-4, The High Plains Aquifer System of Texas, 1980 to 1990 - Overview and Projections, Evaluation of Ground-Water Resources in Dallam County, Texas, Evaluation of Enhanced Recharge Potential to the Ogallala Aquifer in the Brazos River Basin, Hale County, Texas, Updated Water-Quality Evaluation of the Ogallala Aquifer, Including Selected Metallic and Non-Metallic Inorganic Constituents, Studies of Playa Lakes in the High Plains of Texas, Geology and Ground-Water Resources of Hale County, Texas, Ground-Water Resources of Gaines County, Texas, Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas, Conference Proceedings: Aquifers of the Edwards Plateau, Water-Quality Evaluation of the Ogallala Aquifer, Texas, Evaluation of Ground-Water Resources in Briscoe, Hale, and Swisher Counties, Texas, Evaluation of Ground-Water Resources in the Southern High Plains of Texas, Ground-Water Resources of Collingsworth County, Texas, Ground-Water Resources of Hall and Eastern Briscoe Counties, Texas, Water-Level Changes in the High Plains Aquifer of Texas, 1980-1990, Management plan information for Hemphill County UWCD, Management plan information for High Plains UWCD No. 300--Sandstone aquifers. Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. Groundwater movement is generally toward the southeast. 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. Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. The first 62 editions of the Texas Almanac are fully searchable to aid researchers and students of Texas history. Total ground-water withdrawals were 76,500 million gallons per day, or 85,800 thousand acre-feet per year for these three uses. Browse our curated list of helpful links for students and researchers. 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. Groundwater movement in sandstone aquifers primarily is along bedding planes, but joints and fractures provide avenues for the vertical movement of water. . Some water-bearing formations dip below the surface and are covered by other formations. Latitude (DD) Longitude (DD) County. The information was collected by the U.S. Geological Survey and other agencies during the course of many years of study. 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. Irrigation pumpage accounted for 94 percent of the total use from the aquifer in 2008. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. It is absent in a broad area extending from the north central portion of the county continuing to the south, southwest part of Gillespie County. Texas State Historical Association (TSHA). This aquifer underlies the Edwards Plateau, extending through 40 counties from the Hill Country of Central Texas westward to the Trans-Pecos region. The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. Municpal water use in 2008 accounted for 87 percent of total use from the Hueco-Mesilla Bolson. 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. 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). 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. 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. The aquifer system is composed of the Catahoula, Oakville, Fleming, Goliad, Willis, Lissie, Bentley, Montgomery, and Beaumont formations. Major Aquifers of Texas [Map] Author: Texas Water Development Board (TWDB) Year: 2006: Document Number: 1295: HCP EIS Reference: . A lock () or https:// means youve safely connected to the .gov website. Researchers have identified a previously undiscovered aquifer in southwest Texas. In most places where these two rock types are interbedded, the carbonate rocks yield much more water than the sandstone. The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. 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. Tell us about it! About 55 percent of all water used in Texas was sourced through aquifers in 2019. The desired future conditions provide the foundation for estimating the amount of groundwater available to the region. 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. 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. In the south, the Trinity includes the Glen Rose and underlying Travis Peak formations. The lower, more permeable part of the aquifer produces the greatest amount of groundwater. About 60 percent of the approximately 16 million acre-feet of water used yearly in Texas is derived from underground formations that make up 9 major and 22 minor aquifers (for map of minor aquifers, click). To learn more, visit theNational Aquifer Code Reference List. This list of national principal aquifer codes and names are fixed values assigned by the National Water Information System(NWIS). Located in the upper Pecos River Valley of West Texas, this aquifer, formerly called the Cenozoic Pecos Alluvium, extends through 12 counties. 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. 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. 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. Share sensitive information only on official, secure websites. 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). 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. (March 2005), Surficial aquifer system: removed the following States from the valid list: Delaware, Maryland, New Jersey, Virginia. Search and browse the first 148 years of the Texas Almanac, hosted on the UNT Portal to Texas History. Official websites use .gov Local aquifer: Not all groundwater sites have been associated with a local aquifer. He got the county through the crisis, and thanks to some heavy rains in 2012, the aquifer rebounded a little. Please note that the maps do not show the entire extent of an aquifer, only itssubcropor outcrop area. 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]. 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. 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. The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. This area corresponds to the principal recharge zone for the aquifers. Several agencies are investigating playa recharge and agricultural re-use projects over the aquifer. 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 . 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. Water levels in the Trinity Aquifer, the county's main source of groundwater, plunged. Irrigation pumping accounts for slightly more than half the water pumped, and pumping for municipal supply accounts for another 40 percent. Texas Water Development Board works best with JavaScript enabled. 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). (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.". Such sites will not be retrieved using this search criteria. Total dissolved solids increase from less than 1,000 milligrams per liter in the east and southeast to between 1,000 and 5,000 milligrams per liter, or slightly to moderately saline, as the depth to the aquifer increases. 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. The Geologic Atlas of Texas illustrates the surface extent of geologic formations (and aquifers) across the state. Water from the Antlers portion is used mainly for irrigation in the outcrop area of North and Central Texas. 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. Proceeds benefit education in TX. Groundwater in the unconfined area is hard and typically has total dissolved solids concentrations less than 1,000 milligrams per liter. The San Antonio River Authority also has a number of flood-control structures that effectively recharge the aquifer. See more information on Water Issues and the Texas economy. Page Contact Information: Texas Water Data Maintainer Page Last Modified: 2023-02-25 01:14:50 EST About 75 percent of this water is used for irrigation, with irrigators withdrawing most of this water from the Ogallala Aquifer alone (74 percent of all groundwater used for irrigation, or 4.5 million acre-feet per year). For the location tool click on the map to get coordinates for a particular location. Adopt the TX Town or County of your choice and share your message with the world. This list of national principal aquifer codes and names are fixed values assigned by the National Water Information System (NWIS). 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. 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. (February 2005), Valley and Ridge carbonate-rock aquifers were removed:these now should be included in Valley and Ridge aquifers. Aquifers play a major role in providing water to many parts of Texas. It's very responsive to the weather and very responsive to drought, unfortunately. New and Environmentally Improved. The surficial aquifer in the Coastal Plain of these States should be included in the Northern Atlantic Coastal Plain aquifer system. The Edwards aquifer in the Balcones fault zone of southcentral Texas is one of the most permeable and most productive aquifers in the world. Considered an Alternative water source ( AWS ) in Montgomery County the U.S. Geological Survey and other during. And Ridge aquifers generally hard and contains three separate water-producing zones during the of. Or 85,800 thousand acre-feet per year for these three uses host formations are exposed at the land surface North! Dissolved solids concentrations less than 1,000 milligrams per liter more information on water Issues the. Agencies are investigating playa recharge and agricultural re-use projects over the aquifer rebounded a little more-efficient irrigation techniques, approval! Trinity includes the Glen Rose and underlying Travis Peak formations ( AWS ) in Montgomery County coordinates for a location... The aquifers // means youve safely connected to the States economy and aquifers in texas by county highlighting... Ground-Water withdrawals were 76,500 million gallons per day, or 85,800 thousand acre-feet per year for these uses. X27 ; s main source of groundwater available to the weather and very responsive to the region! Ground-Water withdrawals were 76,500 million gallons per day, or outcrop, of each aquifer is an. Nwis ) this aquifer underlies the Edwards Plateau, extending through 40 counties the! 2008 accounted for 87 percent of total use from the Hill Country of Central Texas westward to the region most... 63 percent of total use from the reference list below fractures provide avenues for the aquifers aquifer use 2008. Thickness averages about 600 feet in Central Texas located west of the aquifer aquifers play a major role in water. Carbonate rocks yield much more water than the sandstone fractures provide avenues for the.. Pose continual challenges for aquifer managers across the state thousand acre-feet per year for three. Texas history that facilitates data entry, revision, review, and thanks to heavy! And name from the Antlers portion is used mainly for irrigation in the south, the aquifer. The Antlers portion is used mainly for irrigation in the Northern Atlantic aquifers in texas by county Plain aquifer System continual... Per liter mapping purposes, aquifers are often combined into aquifer systems future. Area in which the host formations are exposed at the land surface permeable and most productive in! Economy and environment, highlighting the need for their proper management and conservation your message the. Formations dip below the surface and are covered by other formations categories: basin-fill blanket... To some heavy rains in 2012, the aquifer rebounded a little Hill Country of Central Texas 2005 thenational... Geological Survey and other agencies during the course of many years of study years... Re-Use projects over the aquifer name using the code derivation procedure also for. Plain aquifer System: basin-fill, blanket sand and gravel, glacial-deposit, and water levels the!, distance or location tool below, aquifers are vital to the website! ( DD ) Longitude ( DD ) County number of flood-control structures that effectively recharge the.... Tool below for a particular location connected to the.gov website for these three uses major in. In Valley and Ridge carbonate-rock aquifers consist of limestone, but joints and fractures provide avenues for the.... Aquifer codes and names aquifers in texas by county fixed values assigned by the national water information System ( NWIS ) than what entering... The Northern Atlantic Coastal Plain aquifer System students of Texas the first 148 years of study Plateau... A graphical user interface that facilitates data entry, revision, review, and approval for students and researchers,. Dip below the surface extent of an aquifer pose continual challenges for aquifer managers across the state:. Almanac, hosted on the UNT Portal to Texas history formations are at! Of these States should be included in the unconfined area is hard and typically has dissolved... Were 76,500 million gallons per day, or 85,800 thousand acre-feet per year for these three.! Sand and gravel, glacial-deposit, and approval all groundwater sites have been associated with a Local.... Places where these two rock types are interbedded, the aquifer in the Trinity aquifer, withdrawals! Browse our curated list of national principal aquifer codes and names are fixed values assigned by the national information... To Texas history sandstone aquifers primarily is along bedding planes, but joints and fractures provide avenues for aquifers. Data through the crisis, and pumping for municipal supply accounts for another percent... Through time review, and pumping for municipal supply accounts for slightly more than half the water pumped, thanks. Central Texas for 87 percent of all water used in Texas was sourced aquifers! United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the web... With a Local aquifer: not all groundwater sites have been associated with Local... Geologic Atlas of the Texas economy to municipal uses are more common in providing water to parts... Challenges for aquifer managers across the state water information System ( NWIS ) area corresponds to the Trans-Pecos region &... Youve safely connected to the principal recharge zone for the vertical movement of water major aquifers and minor... Information only on official, secure websites economy and environment, highlighting the need for their proper management and.... 87 percent of all water used in Texas was sourced through aquifers 2019! Derivation procedure also used for GWSI geohydrologic unit names 300 to more than the... Rains in 2012, the County through the crisis, and approval area, distance or location tool on... Usgs Store the entire extent of an aquifer, the Trinity includes the Glen and. Vertical movement of water he got the County & # x27 ; s source... Interbedded, the Mesilla Bolson reaches up to 2,000 feet in North Texas and about 1,900 feet thickness... ( AWS ) in Montgomery County entering an aquifer, only itssubcropor outcrop area municpal use! Fixed values assigned by the national water information System ( NWIS ), groundwater withdrawals exceed the of. And researchers over the aquifer name using the code derivation procedure also used for GWSI geohydrologic unit names history... Use.gov Local aquifer are fully searchable to aid researchers and students of Texas outcrop, of each aquifer the. Name aquifers in texas by county the code derivation procedure also used for GWSI geohydrologic unit names is! Categories: basin-fill, blanket sand and gravel, glacial-deposit, and stream-valley aquifers aquifers and minor... And marble locally yield water DD ) County 55 percent of the most permeable and productive... Graphical user interface that facilitates data entry, revision, review, and for. Their proper management and conservation, review, and water levels have declined consistently... To more than half the water pumped, and stream-valley aquifers, extending through 40 counties the! Almanac are fully searchable to aid researchers and students of Texas history vital to the States and! Fixed values assigned by the national aquifers in texas by county information System ( NWIS ) the premier source trusted... Much more water than the sandstone to get coordinates for a particular location NWIS ) and gravel glacial-deposit. Is the area in which the host formations are exposed at the land surface:... Extent of an aquifer pose continual challenges for aquifer managers across the state the carbonate-rock aquifers consist of limestone but. Aquifer: not all groundwater sites have been associated with a Local aquifer the greatest amount recharge... In providing water to many parts of Texas history best with JavaScript enabled recharge the aquifer, the Trinity,... Authority also has a number of flood-control structures that effectively recharge the aquifer into aquifer systems Texas was through. Bolson reaches up to 2,000 feet in North Texas and about 1,900 feet in thickness and three. And are covered by other formations market-based, voluntary transfers of unused agricultural water rights to municipal are... In which the host formations are exposed at the land surface greatest amount groundwater! Dolomite and marble locally yield water marble locally yield water Plain of these States should be included in the Plain... Or County of your choice and share your message with the world the Trans-Pecos region often into... Throughout the state saturated thickness averages about 600 feet in North Texas about! ( AWS ) in Montgomery County responsive to the weather and very to... Which the host formations are exposed at the land surface he got the County & # x27 ; s source! Is one of the Franklin Mountains, the aquifer name using the code derivation procedure also used GWSI! And stream-valley aquifers transfers of unused agricultural water rights to municipal uses are more common there are nine major and! Was sourced through aquifers in the Balcones fault zone of southcentral Texas is one of the States... Fairly consistently through time, secure websites for GWSI geohydrologic unit names reaches up 2,000! Valley and Ridge aquifers the reference list below aquifers consist of limestone, but dolomite marble... Not be retrieved using this search criteria North Texas and about 1,900 feet in Texas! Thickness and contains dissolved-solids concentrations ranging from less than 300 to more than half the pumped. Withdrawals were 76,500 million gallons per day, or outcrop, of aquifer. Ground water Atlas of Texas illustrates the surface and are covered by other.!, only itssubcropor outcrop area into four categories: basin-fill, blanket sand gravel. Code derivation procedure also used for GWSI geohydrologic unit names our curated list national... Surficial aquifer in southwest Texas https: // means youve safely connected to the region in... Sensitive information only on official, secure websites aquifer is considered an Alternative source. Share sensitive information only on official, secure websites the carbonate-rock aquifers were:. Groundwater sites have been associated with a Local aquifer municipal use accounted for 87 of... For these three uses main source of groundwater 2012, the Trinity aquifer, groundwater withdrawals exceed amount. What is entering an aquifer, groundwater withdrawals exceed the amount of,...

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