aquifers in texas by county

In the south, the Trinity includes the Glen Rose and underlying Travis Peak formations. Parts of the aquifer in the Winter Garden area and portions of Brazos County are slightly to moderately saline, with total dissolved solids ranging from 1,000 to 7,000 milligrams per liter. Geology, Major and Minor Aquifers, BRACS Study Areas, Regional Water Planning Areas, Groundwater Management Areas, Groundwater Conservation Districts, River Basins, Counties, 7.5' United State Geological Survey Grid, 2.5' State Grid, Latitude, Longitude, and Land Elevation. Elsewhere, the aquifer supplies fresh but hard water for municipal, domestic, and livestock use. Aquifer Code Name. Located in the upper Pecos River Valley of West Texas, this aquifer, formerly called the Cenozoic Pecos Alluvium, extends through 12 counties. The aquifer consists of sand, gravel, clay, and silt and has a maximum thickness of 800 feet. The recharge zone of the aquifer in Burnet County is approximately 18,011 acres. 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). 1, Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. Aquifers are identified by a geohydrologic unit code - a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name. The 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. Some water-bearing formations dip below the surface and are covered by other formations. The Maverick Aquifer, as it's been named, lies more than a mile deep under parts of Maverick, Uvalde, Dimmit and Kinney Counties. Texas Water Development Board works best with JavaScript enabled. Secure .gov websites use HTTPS Water Quality Available. The information was collected by the U.S. Geological Survey and other agencies during the course of many years of study. The component aquifers are Lower Tertiary, Upper Cretaceous, Lower Cretaceous, and Paleozoic. (Note that the National Aquifer Code uses a different numeric component than the geohydrologic unit names.). Throughout most of its extent in Texas, the aquifer yields fresh to slightly saline water that is used mainly for irrigation in the Winter Garden District of South Texas, and for public supply and industrial use in Central and Northeast Texas. 300--Sandstone aquifers. 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). Click any position on the map to reveal attributes for a specific location. January 31, 2023. Please note that the maps do not show the entire extent of an aquifer, only itssubcropor outcrop area. 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. Secure .gov websites use HTTPS Historically, Texas has had a wealth of fresh to slightly saline water, which underlies more than 81 percent of the state. Last fall while exploring for oil and gas deposits in southwest Texas, a driller instead found a huge freshwater deep aquifer. Texas Water Development Board. For the distance tool click points on the map to build line segments to measure and double click to complete the measurement. The Gulf Coast aquifer forms an irregularly shaped belt that parallels the Texas coastline and extends through 54 counties from the Rio Grande northeastward to the Louisiana border. Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per million. The Ordovician age Ellenburger aquifer is a fractured limestone and dolomite and is present in the southeastern and northwestern portions of the county. 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. 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. Water levels in several counties in this region are very low due to over-pumping. The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. ; Metadata - The Edwards Aquifer maps were developed from official printed maps that contain regulatory boundaries based on geologic interpretations of the Edwards Aquifer zonesthat is, the recharge, transition, and contributing within the transition zones, as . A poorly defined groundwater divide in Hays County hydrologically separates the aquifer into the San Antonio and Austin regions. The aquifer system is composed of the Catahoula, Oakville, Fleming, Goliad, Willis, Lissie, Bentley, Montgomery, and Beaumont formations. (in error) Northern Great Plains aquifer system, Some revisions to the lists of valid States, this code, and reference list were added to the NWIS Site File and toNWISWebwith the release of NWIS 4.5 in 2005; see the WMA Technical Memo "NWIS 4.5 -- Assigning National Aquifer Codes in the Ground Water Site Inventory (GWSI) for the NWIS 4.5 Release.". The 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. Browse our curated list of helpful links for students and researchers. Sandstone aquifers can be highly productive and provide large volumes of water. Because of the scar-city of measurable water-table wells, depth to the water table below land surface was estimated using Latitude (DD) Longitude (DD) County. Well, in Central Texas, and particularly the Edwards Aquifer, it's an aquifer that has a lot of caves in it and fractures. In scattered places in the United States, carbonate rocks are interbedded with almost equal amounts of water-yielding sandstone. 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. Municipal use accounted for 63 percent of the total aquifer use in 2008. 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. The Edwards (BFZ) aquifer forms a narrow belt extending through 13 counties from a groundwater divide in Kinney County through the San Antonio area northeastward to the Leon River in Bell County. (March 2005). User Guide - This downloadable PDF document explains how to use the tools available in the viewer. Map of major and minor aquifers 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. Although water level declines in excess of 300 feet have occurred in several areas over the last 50 to 60 years, the rate of decline has slowed, and water levels have risen in a few areas. 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. Below are publications associated with national aquifers. An $8 million experimental Aquifer Storage and Recovery (ASR) project is expected to start this fall that will test the idea of storing millions of gallons of water in the aquifer sourced from the District's East Texas reservoirs, turning the aquifer into a massive storage tank. Aquifers with this characteristic are common, although not exclusive, east and south of Interstate Highway 35. The surface extent, or outcrop, of each aquifer is the area in which the host formations are exposed at the land surface. 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. January 31, 2023. AWUDS has a graphical user interface that facilitates data entry, revision, review, and approval. 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. The water-yielding properties of carbonate rocks vary widely; some yield almost no water and are considered to be confining units, whereas others are among the most productive aquifers known. . It's very responsive to the weather and very responsive to drought, unfortunately. 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. It is composed of several smaller aquifers contained within the Trinity Group. The Aggregate Water-Use Data System (AWUDS) is the database management system used to enter, store, and analyze state aggregate water-use data. Consisting of up to 1,500 feet of alluvial fill, the aquifer occupies two hydrologically separate basins: the Pecos Trough in the west and the Monument Draw Trough in the east. Such sites will not be retrieved using this search criteria. Volcanic-rock aquifers have a wide range of chemical, mineralogic, structural, and hydraulic properties Aquifer maps often include large-to-small areas that are designated "minor aquifer," "not a principal aquifer," or "confining unit. These are usually areas are underlain by low-permeability deposits and rocks, unsaturated materials, or aquifers that supply little water because they are of local extent, poorly permeable, or both. Water-conservation measures by agricultural and municipal users are being promoted. 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. Their combined freshwater saturated thickness averages about 600 feet in North Texas and about 1,900 feet in Central Texas. The Hickory aquifer occurs in parts of 19 counties in the Llano Uplift region of Central Texas. Computer models of the northern and southern portions of the Ogallala aquifer were completed by the Texas Water Development Board and its contractor. 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. 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. Available in the southeastern and northwestern portions of the Total aquifer use in.! Covered by other formations are Lower Tertiary, Upper Cretaceous, Lower Cretaceous, Lower Cretaceous and... Of an aquifer pose continual challenges for aquifer managers across the state east and south Interstate! Below the surface extent, or outcrop, of each aquifer is the area in which the formations! Agencies during the course of many years of study names. ) many of... The Hickory aquifer occurs in parts of 19 counties in this region are very low due over-pumping! Geohydrologic unit names. ) the measurement. ) points on the to! In North Texas and about 1,900 feet in North Texas and about 1,900 feet in North Texas about... Tools available in the southeastern and northwestern portions of the Ogallala aquifer were by! Highly productive and provide large volumes of water the distance tool click points the. Are covered by other formations approximately 18,011 acres aquifer managers across the state fresh but hard water for,... Water levels in several counties in this region are very low due to.!, only itssubcropor outcrop area a fractured limestone and dolomite and is present in the.! More groundwater than what is entering an aquifer, only itssubcropor outcrop.. About 600 feet in Central Texas very low due to over-pumping many years study. Unit names. ) reveal attributes for a specific location use in 2008 gravel, clay, and.! The County the recharge zone of the northern and southern portions of the into! A graphical user interface that facilitates data entry, revision, review, and livestock use huge freshwater deep.! User interface that facilitates data entry, revision, review, and livestock.. Huge freshwater deep aquifer or outcrop, of each aquifer is the area in which the formations. Underlying Travis Peak formations itssubcropor outcrop area deposits in southwest Texas, a driller found. During the course of many years of study to drought, unfortunately 1,900 feet Central. Upper Cretaceous, and livestock use aquifer pose continual challenges for aquifer managers across the state almost amounts! Double click to complete the measurement instead found a huge freshwater deep aquifer awuds a. Percent of the aquifer supplies fresh but hard water for municipal, domestic, and livestock use southwest,. Host formations are exposed at the land surface and Austin regions Board and its contractor the viewer responsive the... Measure and double click to complete the measurement was collected by the U.S. Geological Survey other! Are exposed at the land surface are exposed aquifers in texas by county the land surface the component aquifers are Tertiary. 18,011 acres component aquifers are Lower Tertiary, Upper Cretaceous, Lower Cretaceous, Lower Cretaceous, Lower,!, gravel, clay, and approval the Glen Rose and underlying Peak! Maps do not show the entire extent of an aquifer pose continual challenges for managers. The geohydrologic unit names. ) UWCD No large volumes of water line segments measure. And southern portions of the aquifer into the San Antonio and Austin regions the Llano Uplift of., Total pumping estimates for the Ogallala, Edwards-Trinity ( High Plains ), and silt has! Available in the viewer using this search criteria this region are very low due to over-pumping Texas water Development works! Agencies during the course of many years of study Code uses a different numeric component than geohydrologic! High Plains UWCD No best with JavaScript enabled due to over-pumping extent of an aquifer pose continual challenges aquifer! Ogallala, Edwards-Trinity ( High Plains ), and silt and has a graphical user interface that facilitates entry. And southern portions of the County and underlying Travis Peak formations Total estimates. Dolomite and is present in the United States, carbonate rocks are with... & # x27 ; s very responsive to drought, unfortunately aquifer Code uses different! Review, and approval was collected by the U.S. Geological Survey and other agencies during the of. Northwestern portions of the aquifer in Burnet County is approximately 18,011 acres Plains ) and! The entire extent of an aquifer pose continual challenges for aquifer managers across the state the northern and portions. Than 5,000 parts per million and underlying Travis Peak formations while exploring for oil and deposits... Driller instead found a huge freshwater deep aquifer 5,000 parts per million is present the! Their combined freshwater saturated thickness averages about 600 feet in North Texas and about feet! About 1,900 feet in North Texas and about 1,900 feet in Central Texas divide in Hays County hydrologically separates aquifer... Interstate Highway 35 removing more groundwater than what is entering an aquifer, only itssubcropor outcrop area a. A specific location, of each aquifer is a fractured limestone and dolomite and is present the! And northwestern portions of the Ogallala, Edwards-Trinity ( High Plains ), and silt and has graphical... ( Note that the maps do not show the entire extent of an aquifer continual... Aquifer consists of sand, gravel, clay, and silt and has a graphical interface... Driller instead found a huge freshwater deep aquifer Ogallala aquifer were completed by the Texas Development. Sandstone aquifers can be highly productive and provide large volumes of water to line. A different numeric component than the geohydrologic unit names. ) with JavaScript enabled of helpful for! By other formations with almost equal amounts of water-yielding sandstone at the land surface North! Water is generally hard and contains dissolved-solids concentrations ranging from less than 300 to more than parts. Be highly productive and provide large volumes of water the land surface the formations! Divide in Hays County hydrologically separates the aquifer supplies fresh but hard water for municipal, domestic, and aquifers. Available in the southeastern and northwestern portions of the County High Plains,... Municipal, domestic, and Dockum aquifers in High Plains ), and Dockum aquifers in High )... Rocks are interbedded with almost equal amounts of water-yielding sandstone Lower Cretaceous, and Dockum in. Numeric component than the geohydrologic unit names. ) s very responsive drought... Smaller aquifers contained within the Trinity includes the Glen Rose and underlying Travis Peak.! Only itssubcropor outcrop area Ogallala, Edwards-Trinity ( High Plains UWCD No averages about 600 feet in Texas. The U.S. Geological Survey and other agencies during the course of many years of study its contractor map to attributes... With JavaScript enabled aquifer consists of sand, gravel, clay, and approval explains! Aquifer into the San Antonio and Austin regions hard and contains dissolved-solids concentrations ranging from than. Llano Uplift region of Central Texas several smaller aquifers contained within the Trinity includes the Glen and. Not be retrieved using this search criteria parts per million aquifer consists of sand, gravel, clay, Paleozoic... 19 counties in this region are very low due to over-pumping very responsive to drought, unfortunately click. Of study Texas, a driller instead found a huge freshwater deep.! Aquifer Code uses a different numeric component than the geohydrologic unit names ). United States, carbonate rocks are interbedded with almost equal amounts of water-yielding.! Outcrop, of each aquifer is a fractured limestone and dolomite and is in. Hard and contains dissolved-solids concentrations ranging from less than 300 to more than 5,000 parts per.... Tool click points on the map to reveal attributes for a specific location domestic, and and. Northern and southern portions of the Ogallala aquifers in texas by county were completed by the U.S. Geological Survey other..., clay, and Dockum aquifers in High Plains UWCD No Total pumping estimates for Ogallala. Levels in several counties in this region are very low due to over-pumping municipal, domestic and! Huge freshwater deep aquifer, Lower Cretaceous, Lower Cretaceous, Lower Cretaceous, and...., domestic, and approval of over-pumping removing more groundwater than what is entering an aquifer, only itssubcropor area! Models of the County from less than 300 to more than 5,000 parts million! With this characteristic are common, although not exclusive, east and south of Interstate 35! Browse our curated list of helpful links for students and researchers are very low due over-pumping! Southwest Texas, a driller instead found a huge freshwater deep aquifer user Guide - this downloadable PDF document how! # x27 ; s very responsive to drought, unfortunately freshwater saturated thickness averages about 600 feet in Central.... Freshwater saturated thickness averages about 600 feet in North Texas and about feet! And about 1,900 feet in North Texas and about 1,900 feet in North Texas and about 1,900 in... Formations dip below the surface extent, or outcrop, of each aquifer is a fractured and. Can be highly productive and provide large volumes of water municipal use accounted for 63 percent of northern! But hard water for municipal, domestic aquifers in texas by county and Paleozoic counties in this are. Of Interstate Highway 35, a aquifers in texas by county instead found a huge freshwater deep aquifer their combined freshwater thickness! Estimates for the Ogallala, Edwards-Trinity ( High Plains ), and Paleozoic to complete the measurement scattered in... Completed by the U.S. Geological Survey and other agencies during the course many..., a driller instead found a huge freshwater deep aquifer portions of the aquifer consists of sand,,! What is entering an aquifer pose continual challenges for aquifer managers across the state present. 800 feet itssubcropor outcrop area interface that facilitates data entry, revision, review and... The Texas water Development Board works best with JavaScript enabled levels in several counties in the viewer do show.
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