| 14.0 | Highway 11 north of Corson begins to flood. | | 11.0 | The nursery near the mouth of Split Rock Creek begins flooding if the Big Sioux River is high enough to cause a backwater effect. | | 9.0 | The parking lot at Huset Speedway is flooded. | | 8.5 | Flooding of the lower lying agricultural land begins. |
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1) 17.58 ft on 05/08/1993
2) 15.00 ft on 04/08/1969
3) 14.08 ft on 06/21/1984
4) 13.98 ft on 09/22/1986
5) 12.82 ft on 04/07/2006
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Low water records are unavailable.
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