River gauges›Illinois
RIVER GAUGE · ILLINOIS RIVER

Illinois River at Hardin

Calhoun County, Illinois

Water level19.88 ft
Flow18,000 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action24 ft
Minor flood25 ft
Moderate flood31 ft
Major flood32 ft

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
Aug 2, 199342.4 ft—
Jun 7, 201940.29 ft—
Apr 28, 197338.2 ft—

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