Home / Rivers / Illinois River
273 miles

Illinois River

The Illinois River begins at the confluence of the Des Plaines and Kankakee rivers and flows to the Mississippi.

N50 mi
Course of the river, simplified. Map data © OpenStreetMap contributors.
Air temp Loading…

River facts

Length273 miles
SourceConfluence of the Des Plaines and Kankakee rivers
MouthMississippi River

Its drainage basin covers about 28,757 square miles.

Listed fish are the species named for the river on its Wikipedia page. Check the Illinois Department of Natural Resources for river-specific regulations before you fish.

Source: Illinois River (Wikipedia)

← All rivers

View on interactive map

Zoom and pan on a street, satellite or terrain map to follow the river past roads and towns. Red pins are boat ramps and launches. Tap a pin for directions.