| 20.0 | Water reaches the top of the protective earthen dike. | | 19.8 | The water reaches the flood of record set in 1965. | | 16.5 | Agriculture and recreational land is flooded. | | 16.0 | Lock gates and walls go under water. | | 15.5 | The lock and dam is closed to navigation. |
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1) 19.78 ft on 04/19/1965
2) 18.15 ft on 04/16/2001
3) 17.53 ft on 04/18/1969
4) 16.30 ft on 04/18/1952
5) 16.20 ft on 04/16/1951
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1) 0.40 ft on 01/22/1944
2) 1.83 ft on 12/12/1960
3) 2.61 ft on 07/22/1936
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