RIVER GAUGE · LITTLE SIOUX RIVER
Little Sioux River near Turin
Monona County, Iowa
Water level7.32 ft
Flow582 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action22 ft
Minor flood25 ft
Moderate flood28 ft
Major flood34.5 ft
The past week
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What floods at each level
- 37 ft
Water reaches the bottom of the E54 bridge at the gage site.
- 34.5 ft
Water nears the top of the federal levee.
- 25 ft
Flooding may begin near the mouth of the river downstream of Interstate 29. Upstream of the Interstate the river is contained within the levee system.
- 22 ft
Water exceeds the top of the natural channel but still remains within the confines of the levee system.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Mar 14, 2019 | 29.57 ft | 58,400 cfs |
| Feb 18, 1971 | 27.44 ft | 30,000 cfs |
| Jun 25, 2024 | 27.37 ft | 41,100 cfs |
More on Little Sioux River
UpstreamWest Fork Ditch near Hornick
Get an alert when Little Sioux River rises
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