Abstract - Water-Supply Sites for Wind Cave National Park
Adolphson, Donald G. and LeRoux, E.F. 1974. Water-Supply Sites for Wind Cave National Park, Custer County, South Dakota. National Park Service, US Department of the Interior. 20+ p.
The reconnaissance of Wind Cave National Park identifies the Pahasapa Limestone as the best aquifer in the area. Yields of 40 gallons per minute or 2.5 liters per second for periods of 8 to 10 hours could be expected from the present National Park Service well. This yield is about twice the average daily amount now being used in the Park. Water from the well had 275 milligrams per liter dissolved solids concentration. Springs, surface water, and alluvial aquifers in the valleys are not considered to be potential sources of additional water for the park.
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The Field Milkvetch has a colorful flower which is often overlooked because it tends to grow hidden in the grass. Color can vary to reddish-purple. More...