| 17.0 | Iowa highway 76 is overtopped just north of the gage site. | | 16.0 | Iowa highway 76 south of Dorchester may be threatened by flood waters. | | 15.0 | Significant agricultural flooding begins. | | 14.0 | Lowland agricultural areas begin to flood. |
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1) 22.46 ft on 06/09/2008
2) 22.20 ft on 02/28/1948
3) 21.80 ft on 05/30/1941
4) 20.89 ft on 03/05/1937
5) 20.00 ft on 08/17/1993
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1) 5.50 ft on 08/15/1941
2) 6.50 ft on 12/31/1976
3) 6.62 ft on 12/02/2003
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