RIVER GAUGE · MACKINAW RIVER
Mackinaw River near Congerville
Woodford County, Illinois
Water level1.40 ft
Flow128 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action10 ft
Minor flood13 ft
Moderate flood14 ft
Major flood20 ft
The past week
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What floods at each level
- 13 ft
Widespread agricultural flooding occurs.
- 11 ft
Tyrrell Road, 2 miles northeast of Mackinaw, begins to flood.
- 10 ft
Minor flooding begins to low lying areas near the river.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Dec 3, 1982 | 20.21 ft | 44,800 cfs |
| Oct 3, 1986 | 19.61 ft | 35,300 cfs |
| Jun 2, 1980 | 19.52 ft | 31,900 cfs |
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