RIVER GAUGE · ILLINOIS RIVER
Illinois River near Havana
Mason County, Illinois
Water level6.32 ft
Flow6,730 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action13 ft
Minor flood14 ft
Moderate flood17 ft
Major flood23 ft
The past week
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What floods at each level
- 30.1 ft
Liverpool Levee overtops.
- 27 ft
Thompson Lake Levee is overtopped. The Duncan Mills levee overtops...flooding agricultural land.
- 26 ft
Big Lake Levee is overtopped. Water reaches the low steel on the US 136 bridge over Lacy Ditch...just west of Havana.
- 25.6 ft
Globe (Crabtree) Levee is overtopped.
- 25 ft
Water reaches the low steel on the IL 78/97 bridges over Lacy Ditch and the Spoon River...just north of the wye with US 136.
- 22 ft
Riverfront Park in Havana is inundated.
- 19.5 ft
Access road to Anderson Lake north campground closed.
- 14 ft
Minor flooding begins to agricultural areas not protected by levees.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Apr 25, 2013 | 27.78 ft | -9,999 cfs |
| Jul 1, 2015 | 27.24 ft | -9,999 cfs |
| May 25, 1943 | 27.1 ft | — |
More on Illinois River
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Illinois River at Beardstown
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Illinois River near Henry
Illinois River near La Salle
Illinois River at Marseilles Lock (tailwater)
Illinois River at Morris
Illinois River at Meredosia
Illinois River at Marseilles
Illinois River at LaGrange Lock and Dam
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