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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]
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.
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.
[4]: 356 The Ogallala Aquifer is the main freshwater source for the region and consists of braided stream deposits filling in valleys during humid climatic conditions, followed by a sub-humid to arid climate and thick eolian (wind-blown) sand and silt. [4]: 356 Caliche layers cap the Ogallala, which reflect today's arid conditions.
The Ogallala aquifer is the principal source of water for agriculture in western Kansas. It’s not an underground lake as some believe but saturated sediments that have been deposited over the ...
The water in the Ogallala Aquifer is worth billions to western Kansas, but it’s disappearing. It's been a challenge to find ways to slow depletion. Ogallala Aquifer dropped 12+ inches in 2021.
The Sandhills sit atop the massive Ogallala Aquifer; thus both temporary and permanent shallow lakes are common in low-lying valleys between the grass-stabilized dunes prevalent in the Sandhills. [4] The eastern and central sections of the region are drained by tributaries of the Loup River and the Niobrara River , while the western section is ...
Dec. 12—The Ogallala Land & Water Trust's efforts to conserve water in the Ogallala Aquifer in an area near Cannon Air Force Base have been acknowledged by the U.S. Department of Defense in a ...