Water Resources of South Dakota - Hydrologic information and appraisal of the state's water resources, provided by the U.S. Geological Survey.South Dakota Geological Survey - Mission is to conduct geologic studies, hydrologic studies, and research; and to collect, correlate, preserve, interpret, and disseminate information, leading to a better understanding of the geology and hydrology of South Dakota.
Black Hills Weather Information - Includes information about chinook winds, how geography affects weather, and other aspects of the meteorology of the Black Hills region.
