Illinois · Unknown Co.

Mississippi River

· 593 mi · Class
Optimal: CFS · USGS #
CFS
Loading…
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 0 cfsHist. median: 0 cfs
State

The mighty Mississippi River forms the western border of Illinois, where it glides along flowing south the entire length of the state. Its length along the border is 593 miles, and its major Illinois tributaries include the Rock, Illinois, and Kaskaskia rivers. When the Mississippi River reaches its confluence with the Ohio River near Cairo, it is draining wholly or partially 25 states, as well as portions of Canada. There are two sections to the Mississippi as its flows through Illinois. The upper portion between Alton and East Dubuque near the Wisconsin border consists of a series of reservo

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 Mississippi River? Your local knowledge makes this page better for every paddler, angler, and guide who comes after you.
Improve This River →