River gauges›Iowa
RIVER GAUGE · UPPER IOWA RIVER

Upper Iowa River at Decorah

Winneshiek County, Iowa

Water level1.78 ft
Flow172 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action9 ft10,100 cfs
Minor flood12 ft
Moderate flood13 ft
Major flood14 ft

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
Jun 9, 200817.9 ft34,100 cfs
Aug 16, 199314.35 ft20,500 cfs
Aug 24, 201613.68 ft19,800 cfs

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