Sullivan County

Counties: Sullivan County

Natural Areas Organizations

Sullivan County Indiana Location Map

Sullivan County is in western Indiana. It is bounded on the north by Vigo County, on the west by Illinois, on the south by Knox County, on the east by Greene County, and on the northeast by Clay County.

  Natural Areas

Greene-Sullivan State Forest

Sanctuary Oaks Nature Preserve

Shakamak Prairie Nature Preserve

Shakamak State Park
 See also: DNR


Indiana Native Plant Society - South Central Chapter

Ouabache Land Conservancy

Wabash Valley Audubon Society



Sullivan County Indiana Watersheds map

Sullivan County Watersheds
Click to enlarge

Red lines on the map depict the boundaries of 8-digit hydrologic units (one convenient definition of a watershed) as shown on this 1974 United States Geological Survey Map.

Sullivan County drains into two different 8-digit hydrologic units, each represented on the image above by an area between red lines and within the county boundary, designated by a letter. Clicking on a watershed name below will take you to separate page with more information on that watershed.




Middle Wabash-Busseron
Lower White