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The Ogallala Aquifer (oh-gə-LAH-lə) is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States. As one of the world's largest aquifers, it underlies an area of approximately 174,000 sq mi (450,000 km 2) in portions of eight states (South Dakota, Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and Texas). [1]
Aquifers of the United States Withdrawal rates from the Ogallala Aquifer.. This is a list of some aquifers in the United States.. Map of major US aquifers by rock type. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to groundwater wells and springs.
English: Digital map of the saturated thickness of the High Plains aquifer in parts of Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas and Wyoming, 1996-97. Produced from GIS data produced by the USGS and published in Open File Report 00-300 (USGS OFR 00-300). Researchers: Fischer, Brian C.; Kollasch, Keith M.; McGuire, Virginia L.
The Ogallala Aquifer was formed more than 25,000 years ago, but it recharges at a very low rate. For years, irrigators in Kansas have drained more from the aquifer than rainfall can replace.
Several counties have already lost more than half of their underground water. But a new plan could save more of what’s left. Western Kansas farmers are pushing to save the Ogallala Aquifer ...
English: Map of water-level changes in the High Plains/Ogallala Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, 1980 to 1995. Created from public domain data produced by the USGS and made available in Open-File Report 99-197 [1] [2] .
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The Ogallala Aquifer is one of the world's largest aquifers spanning almost the entire state of Nebraska, except for a small section of the Nebraska Panhandle and areas in the east near the Missouri River. Nebraska hydrogeology is known through extensive irrigation well drilling for agriculture.