| 18.0 | Major Flood Stage. North Dakota Highway 32...South of Wahalla becomes impassable. | | 16.0 | Moderate Flood Stage. Minor Damage in City Park. | | 14.5 | Flooding occurs along the left bank. | | 11.0 | Minor Flood Stage. | | 9.0 | Forecast Service Stage. | | 8.5 | Bankfull Stage.Flooding occurs along the right bank. |
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1) 19.20 ft on 04/18/1950
2) 16.70 ft on 04/19/2009
3) 16.20 ft on 04/26/1997
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1) 0.00 ft on 01/11/1911
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