RIVER GAUGE · IROQUOIS RIVER
Iroquois River at Iroquois
Iroquois County, Illinois
Water level4.61 ft
Flow56 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action17 ft
Minor flood18 ft
Moderate flood24 ft
Major flood25 ft
The past week
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What floods at each level
- 29.6 ft
Water reaches bottom of Route 52 bridge.
- 27 ft
Residences threatened near US-52/Main Street in Iroquois.
- 26.5 ft
US-52/Main Street threatened near the river in Iroquois.
- 26 ft
Widespread inundation of structures and roads begins in east Watseka.
- 25 ft
Flooding of some buildings near the river begins.
- 21.5 ft
County Road 1950N threatened north of Watseka.
- 18 ft
Agricultural areas near the river begin to flood.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jun 12, 1958 | 26.31 ft | 10,400 cfs |
| Feb 21, 2018 | 26.17 ft | 9,900 cfs |
| Jan 8, 2008 | 25.81 ft | 9,590 cfs |
When the water runs low
- 3.0
Approximate stage of the 1-in-10 annual chance flow (7-day average).
- 2.5
River nears zero flow.
More on Iroquois River
UpstreamIroquois River near Foresman
DownstreamIroquois River near Chebanse
Get an alert when Iroquois River rises
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