Illinois · Unknown Co.
Kaskaskia River
· 300 mi · Class
Optimal: 600–1800 CFS · USGS #05592100
1,550CFS
7.97 ft gauge height
Optimal↓Falling slowly (-20 cfs/hr)(-50 in 3h)
Avg flow: 1,188 cfsHist. median: 0 cfsUSGS #05592100
State
The Kaskaskia River is the largest stream found entirely within Illinois. From its headwaters just west of Champaign to its mouth on the Mississippi River above Chester, the Kaskaskia winds its way across nearly 300 miles of central and southwestern Illinois. Its watershed (the land area draining into it) encompasses all or parts of 22 counties and about 10% of the state's total land area. (Illinois DNR)
10-Year Flow Patterns
See 10 years of flow patterns for this river — historical analysis is a Pro feature.Upgrade to Pro →
Your Optimal Range
Set your personal optimal CFS window per river — custom ranges are a Pro feature.Upgrade to Pro →
Data Quality
River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.
Know the Kaskaskia River? Your local knowledge makes this page better for every paddler, angler, and guide who comes after you.
Improve This River →