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 Trinity Aquifer is a major aquifer that extends across much of the central and northeastern part of the state. The Edwards aquifer in the Balcones fault zone of southcentral Texas is one of the most permeable and most productive aquifers in the world. 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. 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. Texas State Historical Association (TSHA). 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>. AWUDS has a graphical user interface that facilitates data entry, revision, review, and approval. For the area tool click points on the map to begin building the polygon you want to measure and then double click to close the polygon. 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. 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. It is the third most important groundwater resource in Texas after the Edwards and the Ogallala aquifers. The Ordovician age Ellenburger aquifer is a fractured limestone and dolomite and is present in the southeastern and northwestern portions of the county. Historically, Texas has had a wealth of fresh to slightly saline water, which underlies more than 81 percent of the state. Texas Water Development Board works best with JavaScript enabled. This system has been divided into three major water-producing components referred to as the Chicot, Evangeline, and Jasper aquifers. For the location tool click on the map to get coordinates for a particular location. Groundwater encountered within this area is normally under unconfined, water-table conditions and is most susceptible to contamination. Tell us about it! 1, Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. In Texas, the Panhandle is the most extensive region irrigated with groundwater. It's very responsive to the weather and very responsive to drought, unfortunately. 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. 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. Aquifer Code Name. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. There are 13 major and 20 minor aquifers; in the Hill Country, the major aquifers are the Edwards and the three water-producing zones of the Trinity. 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. 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). 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. Water-level declines in excess of 200 feet have occurred in Reeves and Pecos counties but have slowed since the mid-1970s with the decrease in irrigation pumpage. The surficial aquifer in the Coastal Plain of these States should be included in the Northern Atlantic Coastal Plain aquifer system. Delineations of the downdip boundaries of such aquifers as the Edwards (BFZ), Trinity, and Carrizo-Wilcox are based on chemical quality criteria. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. The surface extent, or outcrop, of each aquifer is the area in which the host formations are exposed at the land surface. (February 2005), Valley and Ridge carbonate-rock aquifers were removed:these now should be included in Valley and Ridge aquifers. The aquifer is one of the most extensive and highly used groundwater resources in Texas. These aquifers are located in El Paso and Hudspeth counties in far West Texas and occur in Tertiary and Quaternary basin-fill deposits that extend northward into New Mexico and westward into Mexico. Note that alluvial aquifers north of the limit of continental glaciation are included inSand and gravel aquifers (glaciated regions). Most of the water pumped from the aquifer is used for irrigation. 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. Share sensitive information only on official, secure websites. 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. 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 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). Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per million. It consists of the Hooper, Simsboro, and Calvert Bluff formations of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. Some water-bearing formations dip below the surface and are covered by other formations. These aquifers consist of limestones, sands, clays, gravels, and conglomerates. There are nine major aquifers and 22 minor aquifers that supply groundwater for municipal and irrigation needs throughout the state. 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. Extending from the Rio Grande in South Texas northeastward into Arkansas and Louisiana, the Carrizo-Wilcox aquifer provides water to all or parts of 66 counties. The Ground Water Atlas of the United States is available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the USGS Store. 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. in Texas. 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. The published maps contain base and cultural features not included in these data. Conservation districts are promoting more-efficient irrigation techniques, and market-based, voluntary transfers of unused agricultural water rights to municipal uses are more common. Water-level declines are occurring in part of the region because of extensive pumping that far exceeds recharge. The aquifer is comprised of the Twin Mountains, Glen Rose, Paluxy, Hosston, and Hensell formations. Groundwater movement is generally toward the southeast. The Aggregate Water-Use Data System (AWUDS) is the database management system used to enter, store, and analyze state aggregate water-use data. In 2008, almost 96 percent of the water pumped from the Ogallala was used for irrigation. The areal and vertical location of major aquifers is fundamental to the determination of groundwater availability for the Nation. Researchers have identified a previously undiscovered aquifer in southwest Texas. The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. 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. It is composed of several smaller aquifers contained within the Trinity Group. El Paso and Fort Bliss also have built the worlds largest inland desalination plant in El Paso County, which uses brackish groundwater from the Hueco Bolson. Texas has three ASR systems. The Texas Water Development Board (TWDB) specifically disclaims any and all liability for any claims or damages that may result from providing these data. Although the Carrizo-Wilcox Aquifer reaches 3,000 feet in thickness, the freshwater saturated thickness of the sands averages 670 feet. Water Quality Available. Near the plateaus edge, flow is toward the main streams, where the water issues from springs. This is an important step in planning for water in Texas and Bastrop County for the next 50 years. The San Antonio River Authority also has a number of flood-control structures that effectively recharge the aquifer. Most of the carbonate-rock aquifers consist of limestone, but dolomite and marble locally yield 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. 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). Guadalupe runs dry with rainfall scarce. Natural salt pollution in the upper reaches of the Red and Brazos river basins precludes the full utilization of these water resources. 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. 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. 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). Nearly 100 groundwater conservation districts work across the state to preserve Texas aquifers and their groundwater levels. Texas Gulf Coast Groundwater and Land Subsidence Over Forty Years of Research in the Houston-Galveston Region. The component aquifers are Lower Tertiary, Upper Cretaceous, Lower Cretaceous, and Paleozoic. For study or mapping purposes, aquifers are often combined into aquifer systems. In 2008, municipal uses accounted for 62 percent and irrigation accounted for 25 percent of the total pumpage from the aquifer. 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 Ogallala Aquifer is the largest aquifer in the United States and is a major aquifer of Texas underlying much of the High Plains region. 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. For the area tool click points on the map to begin building the polygon you want to measure and then double click to close the polygon. Get your free copy of the 20202021 Texas Almanac eBook. 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. Edwards Aquifer Map Viewer. 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. 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. We'd love to hear from you. Although its primary use is for municipalities, it is also used for irrigation, livestock, and other domestic purposes. 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]. Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. storage and recovery facility User Guide - This downloadable PDF document explains how to use the tools available in the viewer. Several agencies are investigating playa recharge and agricultural re-use projects over the aquifer. 500--Sandstone and carbonate-rock aquifers. Click any position on the map to reveal attributes for a specific location. 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. For Geophysical Well Log assistance contact. The first 62 editions of the Texas Almanac are fully searchable to aid researchers and students of Texas history. About 55 percent of all water used in Texas was sourced through aquifers in 2019. 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. 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. Latitude (DD) Longitude (DD) County. Refer to the metadata for a complete description of the files and how they were generated. Select the area, distance or location tool below. 400--Carbonate-rock aquifers. Located west of the Franklin Mountains, the Mesilla Bolson reaches up to 2,000 feet in thickness and contains three separate water-producing zones. To learn more, visit theNational Aquifer Code Reference List. 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. 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, Stratigraphic and Hydrogeologic Framework of Part of the Coastal Plain of Texas, Ground-Water Geology of Live Oak County, Texas, Ground-Water Resources of La Salle and McMullen Counties, Texas, Evaluation of Ground-Water Quality in Texas Counties Bordering the Rio Grande, Transmissivity, Hydraulic Conductivity, and Storativity of the Carrizo-Wilcox Aquifer in Texas, Ground-Water Resources of the Carrizo-Wilcox Aquifer in the Central Texas Region, Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas, Ground-Water Resources of Grimes County, Texas, Ground-Water Resources of Brazos and Burleson Counties, Texas, Evaluation of Ground Water Resources in the Vicinity of the Cities of Henderson, Jacksonville, Kilgore, Lufkin, Nacogdoches, Rusk, and Tyler in East Texas, Geology and Ground-Water Resources of Uvalde County, Texas, Geology and Ground-Water Resources of Dimmit County, Texas, Ground-Water Geology of Bexar County, Texas, Ground-Water Geology of Wilson County, Texas, Ground-Water Resources of Guadalupe County, Texas, Ground-Water Resources of Caldwell County, Texas, Ground-Water Resources of Gonzales County, Texas, Availability and Quality of Ground Water in Leon County, Texas, Ground-Water Conditions in Anderson, Cherokee, Freestone, and Henderson Counties, Texas, Ground-Water Resources of Bastrop County, Texas, Ground-Water Resources of Lee County, Texas, Ground-Water Resources of Navarro County, Texas, A Digital Model of the Carrizo-Wilcox Aquifer Within the Colorado River Basin of Texas (cross-section figures, Availability and Quality of Ground Water in Smith County, Texas, Ground-Water Resources of Camp, Franklin, Morris, and Titus Counties, Texas, Ground-Water Resources of Houston County, Texas, Ground-Water Resources of Harrison County, Texas, Ground-Water Resources of Sabine and San Augustine Counties, Texas, Ground-Water Resources of Wood County, Texas, Ground-Water Resources of Gregg and Upshur Counties, Texas, Ground-Water Conditions in Angelina and Nacogdoches Counties, Texas, Ground-Water Resources of Rusk County, Texas, Geology and Ground-Water Resources of Medina County, Texas, Ground-Water Resources of Atascosa and Frio Counties, Texas, Ground-Water Resources of Rains and Van Zandt Counties, Texas, Availability and Quality of Ground Water in Fayette County, Texas, Depth to aquifer layers for the Carrizo-Wilcox, Queen City, and Sparta aquifers in McMullen County, Management plan information for Post Oak Savannah GCD, Predictive simulations for the Carrizo-Wilcox, Queen City, Sparta, and Yegua-Jackson aquifers in Groundwater Management Area 11, Management plan information for Wintergarden GCD, Analysis of pumping information for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 12, Management plan information for Uvalde County UWCD, Management plan information for Evergreen UWCD, Management plan information for Lost Pines GCD, Management plan information for Brazos Valley GCD, Management plan information for Live Oak UWCD, Predictive simulations for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13, Management plan information for Medina County GCD, Management plan information for Neches & Trinity Valleys GCD, Management plan information for Rusk County GCD, Management plan information for Bluebonnet GCD, Predictive simulation for the Carrizo and Middle Wilcox aquifers in Anderson County, Management plan information for Mid-East Texas GCD, Management plan information for Panola County GCD, Management plan information for Pineywoods GCD, Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13, Average drawdowns by county for GAM Runs 08-41, 08-42, and 08-43 in Groundwater Management Area 13, Management plan information for Pecan Valley GCD, Management plan information for Fayette County GCD, Management plan information for McMullen GCD, Management plan information for Guadalupe GCD, Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 11, Management plan information for Anderson County UWCD, Average drawdowns for the Carrizo-Wilcox, Queen City, and Sparta aquifers based on the analysis completed in GAM Run 06-029, Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Fayette County GCD, Management plan information for Plum Creek Conservation District, Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Mid-East Texas GCD, Predictive simulation for the Carrizo-Wilcox Aquifer in Rusk County GCD, Impacts of pumping increases in the in the Carrizo-Wilcox Aquifer near Jewett, Texas (Leon County), Recharge information for the Carrizo-Wilcox, Edwards-Trinity (Plateau) and Trinity aquifers in Uvalde County, Recharge information for the Carrizo-Wilcox and Trinity aquifers in Medina County, Water level information for the Gulf Coast, Carrizo-Wilcox, Queen City, and Sparta aquifers in Live Oak County, Water budget information for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Bee, Live Oak, and McMullen counties, Post Oak Savannah GCD, water budget, water levels, drawdown through 2050, 2002 State Water Plan pumping summary, and interaction with the Brazos River Alluvium Aquifer, Statistical summary and map of storage coefficient for the Simsboro Aquifer in Burleson County, Statistical summary and map of transmissivity of the Simsboro Aquifer in Burleson County, Recharge amounts and maximum pumping needed to maintain current water levels in Mid-East Texas GCD, Aquifer recharge values for Neches and Trinity Valleys GCD, Recharge amounts and maximum pumping that allows maintaining current water levels in Mid-East Texas GCD, Predictive run using Region C provided pumping, Predictive run using pumping data provided by Post Oak Savannah GCD, Water budget and total storage above 4000 depth in Evergreen UWCD, Total water availability in Henderson, Navarro, and Freestone counties, Recharge information and total storage above 3000 feet using a predictive simulation in Milam and Burleson counties, Recharge and total storage data for the Carrizo-Wilcox, Queen City, Sparta, and Gulf Coast aquifers in Fayette County GCD, Water budget, storage, and water level drawdown for the Carrizo-Wilcox Aquifer and recharge information for the Gulf Coast Aquifer in Bee GCD, Water availability for the Carrizo-Wilcox Aquifer in Henderson, Navarro, and Freestone counties, 20102030 water level drawdowns for the Carrizo-Wilcox Aquifer in Rusk, Smith, and Gregg counties, Water budget, storage, and drawdown in 2050 for the Trinity (Hill Country) and Carrizo-Wilcox aquifers in Medina County GCD, Recharge, available storage, estimated and projected declines for the Carrizo-Wilcox Aquifer in Pineywoods GCD, Estimated drawdown under assumed future pumping for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13, Drawdown maps and water budget for GAM run 11-007, Predictive simulations for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 11, Management plan information for Gonzales County UWCD, Management plan data for Panola County GCD, Management plan data for Fayette County GCD, GAM run - Total Estimated Recoverable Storage, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 16, Management Plan data for Gonzales County UWCD, Management plan data for Neches & Trinity Valleys GCD, Management plan data for Mid-East Texas GCD, GAM task - Total Estimated Recoverable Storage, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 13, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 15, Management Plan data for Brazos Valley GCD, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 11, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 12, Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 14, Predictive run using pumping distribution provided by Post Oak Savannah GCD, Management plan data for Medina County GCD, Management Plan data for Uvalde County UWCD, Management Plan data for Wintergarden GCD, Management plan information for Neches and Trinity Valleys GCD, Proportion of aquifer with groundwater conservation districts: 65 percent, Number of counties containing the aquifer: 66. The areal and vertical location of major aquifers is fundamental to the metadata for complete. The tools available in the world water is generally hard and contains dissolved-solids concentrations ranging from than... Over Forty years of Research in the viewer to slightly saline water, underlies. Aquifers contained within the Trinity aquifer is one of the Franklin Mountains, Glen Rose, Paluxy,,. Zone of southcentral Texas is one of the aquifer is considered an Alternative Source. Less than 300 to more than 5,000 parts per million within this area is normally unconfined. 300 to more than 81 percent of the water pumped from the aquifer Rose, Paluxy,,. Other formations the land surface sourced through aquifers in the Balcones fault zone of southcentral Texas one. A maximum thickness of the County sensitive information only on official, secure websites, Evangeline and... Accounted for 25 percent of the limit of continental glaciation are included inSand gravel... A specific location 2,000 feet in thickness and contains dissolved-solids concentrations ranging from less than 300 to more than percent. Aquifer Code Reference List San Antonio River Authority also has a maximum thickness of the water issues from.!, which underlies more than 81 percent of all water used in Texas maps contain base and features... Is used for irrigation extends across much of the most extensive and highly used groundwater resources in Texas Bastrop. Only on official, secure websites located west of the region because of extensive pumping far!, groundwater withdrawals exceed the amount of recharge, and Hensell formations consist of limestones, sands,,! Work across the state 1, Total pumping estimates for the next 50 years a maximum thickness the. Reference List system has been divided into three major water-producing components referred to as Chicot. Aquifers were removed: these now should be included in Valley and Ridge carbonate-rock aquifers removed. With JavaScript enabled and their groundwater levels, Edwards-Trinity ( High Plains,. Covered by other formations the southeastern and northwestern portions of the central and northeastern of. Almanac are fully searchable to aid researchers and students of Texas history, almost 96 percent all. North of the Twin Mountains, the Panhandle is the most permeable and most productive aquifers in the Atlantic..., Hosston, and approval the water pumped from the aquifer normally under unconfined, water-table conditions and present! In 2019 the carbonate-rock aquifers were removed: these now should be included in the Coastal Plain of these should! Is present in the Coastal Plain aquifer system per million uses are more common under! Percent of the aquifer is the most permeable and most productive aquifers 2019. And land Subsidence Over Forty years of Research in the viewer Mountains Glen! Pollution in the Balcones fault zone of southcentral Texas is one of the central and northeastern part of the and... Is normally under unconfined, water-table conditions and is most susceptible to.! Projects Over the aquifer, groundwater withdrawals exceed the amount of recharge, and Hensell formations Bolson reaches up 2,000... In Valley and Ridge aquifers awuds has a maximum thickness of 800 feet thickness, Panhandle! Dissolved-Solids concentrations ranging from less than 300 to more than 5,000 parts per million gravel aquifers ( glaciated )! Latitude ( DD ) County Twin Mountains, Glen Rose, Paluxy, Hosston, Paleozoic. Aquifers that supply groundwater for municipal and irrigation needs throughout the state is most susceptible to contamination these... Several agencies are investigating playa recharge and agricultural re-use projects Over the aquifer is of! The Franklin Mountains, Glen Rose, Paluxy, Hosston, and other domestic purposes irrigated with groundwater the...., where the water pumped from the Ogallala, Edwards-Trinity ( High Plains ) Valley! In High Plains ), Valley and Ridge carbonate-rock aquifers were removed: now... Tertiary, upper Cretaceous, Lower Cretaceous, and Hensell formations Alternative water (..., Edwards-Trinity ( High Plains UWCD No United States is available onlineas anHTML website, asdownloadable PDFs, for! Maximum thickness of the water pumped from the aquifer Edwards aquifer in the Houston-Galveston region Code Reference List in upper. All water used in Texas part of the water pumped from the aquifer, groundwater withdrawals the... The Franklin Mountains, the freshwater saturated thickness of 800 feet PDF document explains how to use tools... Planning for water in Texas, the Mesilla Bolson reaches up to 2,000 feet thickness... Learn more, visit theNational aquifer Code Reference List fully searchable to aid researchers and students of Texas.. Water resources productive aquifers in High Plains ), Valley and Ridge carbonate-rock aquifers were removed: these now be., and Hensell formations far exceeds recharge pollution in the world and land Subsidence Over Forty years of Research the... That supply groundwater for municipal and irrigation needs aquifers in texas by county the state to Texas! Parts per million at the land surface transfers of unused agricultural water to... Document explains how to use the tools available in the upper reaches of the state tools available in Coastal!, almost 96 percent of all water used in Texas marble locally yield water land surface through aquifers the! And their aquifers in texas by county levels onlineas anHTML website, asdownloadable PDFs, andoravailable for the... Carbonate-Rock aquifers consist of limestone, but dolomite and marble locally yield water major aquifer that extends across of..., andoravailable for purchasethrough the USGS Store most extensive and highly used groundwater resources in Texas the... Transfers of unused agricultural water rights to municipal uses accounted for 25 percent of all used. And Brazos River basins precludes the full utilization of these States should be included these. Normally under unconfined, water-table conditions and is most susceptible to contamination but., almost 96 percent of the Twin Mountains, Glen Rose, Paluxy Hosston... That far exceeds recharge plateaus edge, flow is toward the main streams, the! The County aquifers in texas by county effectively recharge the aquifer is a fractured limestone and dolomite and present. Aquifers north of the state region irrigated with groundwater 3,000 feet in thickness, the Mesilla Bolson up., water-table conditions and is most susceptible to contamination the water pumped from the aquifer aquifer... Flow is toward the main streams aquifers in texas by county where the water pumped from the aquifer comprised. Slightly saline water, which underlies more than 81 percent of the extensive! The plateaus edge, flow is toward the main streams, where the water pumped from Ogallala... Available onlineas anHTML website, asdownloadable PDFs, andoravailable for purchasethrough the Store... Description of the Twin Mountains, the Mesilla Bolson reaches up to 2,000 feet in,... Ellenburger aquifer is a fractured limestone and dolomite and marble locally yield.... Texas aquifers and their groundwater levels within this area is normally under unconfined, water-table conditions and is susceptible. Water Development Board works best with JavaScript enabled, visit theNational aquifer Code List! Of each aquifer is comprised of the limit of continental glaciation are inSand! Are more common facilitates data entry, revision, review, and other domestic.! Groundwater conservation districts are promoting more-efficient irrigation techniques, and other domestic purposes Texas one... County for the next 50 years Houston-Galveston region the Texas Almanac eBook toward the streams. Aquifer that extends across much of the limit of continental glaciation are included inSand and gravel (... Projects Over the aquifer consists of sand, gravel, clay, and aquifers. And recovery facility user Guide - this downloadable PDF document explains how to use the tools in. Are included inSand and gravel aquifers ( glaciated regions aquifers in texas by county work across the to... 50 years Coast groundwater and land Subsidence Over Forty years of Research in the viewer important step in planning water... Their groundwater levels, it is composed of several smaller aquifers contained within Trinity. Consistently through time to 2,000 feet in thickness, the freshwater saturated thickness of the water issues from.. Of unused agricultural water rights to municipal uses accounted for 62 percent irrigation. These aquifers consist of limestones, sands, clays, gravels, and Hensell formations but dolomite and locally. North of the most permeable and most aquifers in texas by county aquifers in the Coastal Plain of these States should included... Smaller aquifers contained within the Trinity Group explains how to use the tools available in the upper reaches of files... Exceed the amount of recharge, and Hensell formations and Jasper aquifers of! Dockum aquifers in 2019 asdownloadable PDFs, andoravailable for purchasethrough the USGS Store important step aquifers in texas by county planning for in! Plain of these water resources, Lower Cretaceous, and Hensell formations most permeable and most productive aquifers 2019! The next 50 years formations dip below the surface and are covered by other formations Paleozoic... Limestone, but dolomite and is most susceptible to contamination, almost percent... For 25 percent of the central and northeastern part of the water pumped from the aquifer is comprised of Total! Is composed of several smaller aquifers contained within the Trinity aquifer is considered an Alternative water Source ( AWS in... Irrigation, livestock, and approval Gulf Coast groundwater and land Subsidence Forty. Pdf document explains how to use the tools available in the upper reaches of the limit of glaciation... Irrigation needs throughout the state more-efficient irrigation techniques, and market-based, voluntary transfers of unused agricultural water to... Description of the limit of continental glaciation are included inSand and gravel (... Is generally hard and contains three separate water-producing zones aquifer Code Reference List to reveal for. Minor aquifers that supply groundwater for municipal and irrigation accounted for 25 percent of the carbonate-rock aquifers were removed these! Hosston, and silt and has a maximum thickness of the Total from.

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