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.

Hydrologic information and appraisal of the state's water resources, provided by the U.S. Geological Survey.

Includes information about chinook winds, how geography affects weather, and other aspects of the meteorology of the Black Hills region.

Formed to improve the quality of the water in Lake Pelican near Watertown. Flood protection, projects, video, and contact information.