Custer County, South Dakota
Hydrologic Unit Code 10120106
Latitude 43°45'04", Longitude 103°45'27"
NAD27
Land-surface elevation 5,690 feet above NGVD29
Spring discharges from the Paleozoic aquifers (N500PLOZOC) national aquifer.
Spring discharges from the Deadwood Formation (Outcrop) (371DDWD) local aquifer.