Kathleen M. Neitzert 1995 The U.S. Geological Survey, in cooperation with the South Dakota Department of Environmental and Natural Resources, maintains a data base of information on water resources in the State of South Dakota. The ground-water site data for Charles Mix and Douglas Counties are presented in two tables, with the data organized by county and location. The chemical data for ground-water sites also are located in a table organized by geologic unit and location. application/pdf 10.3133/ofr95153 en U.S. Geological Survey ; U.S.G.S. Earth Science Information Center, Open-File Reports Section [distributor], Records of wells and chemical analyses of ground water in Charles Mix and Douglas counties, South Dakota reports