Indiana Department of Environmental Management (IDEM) Watershed Planning Section
http://www.in.gov/idem/programs/water/wsp/index.html

Environmental Protection Agency (EPA) – Watersheds
http://www.epa.gov/owow/watershed/

Indiana Association of Soil and Water Conservation Districts (SWCD)
http://www.iaswcd.org/index.htm

SWCD Contact List
http://www.iaswcd.org/directory_email.htm

Center for Watershed Protection
http://www.cwp.org

Example watershed plan – Wildcat Creek Watershed Alliance
http://wildcatalliance.org/

Indiana Geological Survey Karst Information
http://igs.indiana.edu/Geology/karst/karstInIndiana/index.cfm