RIVER GAUGE · UPPER IOWA RIVER
Upper Iowa River at Dorchester
Allamakee County, Iowa
Water level7.06 ft
Flow369 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action11 ft
Minor flood14 ft
Moderate flood17 ft
Major flood19 ft
The past week
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What floods at each level
- 24 ft
Iowa Highway 76 is overtopped just north of the gage site.
- 22 ft
Iowa Highway 76 south of Dorchester may be threatened by flood waters.
- 15 ft
Significant agricultural flooding begins.
- 14 ft
Lowland agricultural areas begin to flood.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Aug 24, 2016 | 24.3 ft | 38,000 cfs |
| Jun 9, 2008 | 22.46 ft | 31,200 cfs |
| Feb 27, 1948 | 22.2 ft | — |
More on Upper Iowa River
UpstreamUpper Iowa River at Decorah
DownstreamMississippi River at Lansing - Pool 9
Get an alert when Upper Iowa River rises
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