600--Igneous and metamorphic-rock aquifers. Secure .gov websites use HTTPS Where the Glen Rose thins or is absent, the Twin Mountains and Paluxy formations coalesce to form the Antlers Formation. For the location tool click on the map to get coordinates for a particular location. Groundwater also supplies about 35 percent of the states municipal needs. A .gov website belongs to an official government organization in the United States. The Maverick Aquifer, as it's been named, lies more than a mile deep under parts of Maverick, Uvalde, Dimmit and Kinney Counties. The aquifer system is composed of the Catahoula, Oakville, Fleming, Goliad, Willis, Lissie, Bentley, Montgomery, and Beaumont formations. Elevation (ft) Well Depth (ft) Water Level Observation Type. A .gov website belongs to an official government organization in the United States. 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. Irrigation pumpage accounted for 94 percent of the total use from the aquifer in 2008. 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. Water-conservation measures by agricultural and municipal users are being promoted. 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). Freshwater saturated thickness averages 95 feet. 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. These aquifers, which are in rocks that range in age from Pleistocene to Cambrian, Igneous and metamorphic-rock aquifers can be grouped into two categories: crystalline-rock and volcanic-rock. 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. This dataset, published in 2002, represents the extent of the alluvial and glacial aquifers north of the southern-most line of glaciation. 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). 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). The Catahoula Aquifer is considered an Alternative Water Source (AWS) in Montgomery County. Groundwater movement in sandstone aquifers primarily is along bedding planes, but joints and fractures provide avenues for the vertical movement of water. If you have any questions or concerns regarding the material on this page, please contact the Comptrollers Data Analysis and Transparency Division. 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. Such sites will not be retrieved using this search criteria. Texas Gulf Coast Groundwater and Land Subsidence Over Forty Years of Research in the Houston-Galveston Region. You may need to request the addition of Alluvial aquifers to the list of aquifers valid in your State. Natural salt pollution in the upper reaches of the Red and Brazos river basins precludes the full utilization of these water resources. Page Contact Information: Texas Water Data Maintainer Page Last Modified: 2023-02-25 01:14:50 EST 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. 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). storage and recovery facility Most of the water pumped from the aquifer is used for irrigation. A lock () or https:// means youve safely connected to the .gov website. 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. 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. TWDB maps depict the 9 major and 21 minor aquifers. 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. Located west of the Franklin Mountains, the Mesilla Bolson reaches up to 2,000 feet in thickness and contains three separate water-producing zones. This area corresponds to the principal recharge zone for the aquifers. The effects of over-pumping removing more groundwater than what is entering an aquifer pose continual challenges for aquifer managers across the state. Most water from aquifers is used for irrigation. In 2008, almost 96 percent of the water pumped from the Ogallala was used for irrigation. And so we've seen water levels drop in those aquifers and we've seen spring flows as a response also drop. Because of the scar-city of measurable water-table wells, depth to the water table below land surface was estimated using An official website of the United States government. 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. 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. Throughout much of the aquifer, groundwater withdrawals exceed the amount of recharge, and water levels have declined fairly consistently through time. Water quality generally ranges from fresh to slightly saline. Now called the Maverick Basin Aquifer, it is known to be at least 3,000 square miles in area and averages 1,000 feet thick in most places. 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. Dell City irrigation from the Bone SpringVictorio Peak minor aquifer in Hudspeth County. 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. Adopt the TX Town or County of your choice and share your message with the world. 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. 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. 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