  |
South Dakota Geological Survey - http://www.sdgs.usd.edu/
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 - http://www.blackhillsweather.com/
Includes information about chinook winds, how geography affects weather, and other aspects of the meteorology of the Black Hills region. |
  |
Lake Pelican Water Project District - http://www.lakepelicanwaterprojdist.com/
Formed to improve the quality of the water in Lake Pelican near Watertown. Flood protection, projects, video, and contact information. |
 |
Water Resources of South Dakota - http://wwwsd.cr.usgs.gov/
Hydrologic information and appraisal of the state's water resources, provided by the U.S. Geological Survey. |