Geological Survey Water-Supply Paper 1475-D Geology and Occurrence of Ground Water at Jewel Cave National Monument, South Dakota

Formations underlying Jewel Cave National Monument are not sufficiently permeable to yield abundant supplies of ground water. However, the 75 feet of water-bearing sandstones penetrated by the drill at depths of 475 to 485 feet and 600 to 665 feet are apparently capable of yielding 15 to 18 gpm for a short time. Other wells, drilled as far from the test well as practical, will furnish additional water if future demands exceed the output of the test well.