| 44.0 | Widespread major flooding would be prevalent along the entire reach from just upstream of Decatur downstream to the mouth of the Little Sioux River. | | 38.0 | Water levels would be about 1.5 feet shy of the gage platform. Extensive flooding along the reach would be encountered. | | 35.0 | Local marinas and boat docks begin to flood. |
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1) 43.50 ft on 04/11/1943
2) 43.07 ft on 04/26/1950
3) 41.20 ft on 04/09/1949
4) 41.10 ft on 04/13/1944
5) 40.60 ft on 06/29/1947
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1) 0.00 ft on 01/01/1993
2) 0.00 ft on 01/08/1994
3) 0.00 ft on 02/12/1995
4) 0.00 ft on 02/13/1995
5) 0.00 ft on 01/20/1996
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