Sandhills (Nebraska)
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The Sandhills, often written Sand Hills, is a region of mixed-grass prairie on grass-stabilized sand dunes in north-central Nebraska, covering just over one quarter of the state. The dunes were design
Sandhills in Thomas County, Nebraska
Sand Hills from space, September 2001
Alkaline lakes area in Sheridan County
Sand Hills Grassland Near Seneca, Nebraska
Ogallala Aquifer
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The Ogallala Aquifer is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States.
Sandhills (Nebraska)
…of the region gradually increases from about 1,800 ft (550 m) in the east to about 3,600 ft (1,100 m) in the west. 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. The…
NASA ASTER image of a roughly 557 mi2 area of fields (1443 km2) in Kansas watered from the Ogallala Aquifer with center pivot irrigation systems