ILLINOIS FLOW REPORT

Last Updated: March 27, 2026

Streamflow levels across Illinois are currently 61.0% of normal, with the Mississippi River At Thebes reporting the highest discharge in the state with 171000cfs and gauge stage of 15.41 ft. Meanwhile, the Sugar Creek Near Bloomington is seeing a spike in streamflows today after experiencing a 782.78% increase since yesterday, and currently running at 369cfs.

Maximum gauge stage in the state was last observed at the Kaskaskia River At New Athens, currently reporting a stage of 69.51ft. The Des Plaines River At Russell in the Des Plaines watershed is surging for this time of year at 277cfs, about 83.54% of normal.