Pennington County, South Dakota
Hydrologic Unit Code 10120110
Latitude 44°01'18", Longitude 103°56'11"
NAD27
Land-surface elevation 6,750 feet above NGVD29
Spring discharges from the Paleozoic aquifers (N500PLOZOC) national aquifer.
Spring discharges from the Minnelusa Formation (Permian andPennsylvanian) (310MNLS) local aquifer.