| 663.7 | Water levels reach the flood of record. | | 663.0 | Lock walls go under water. | | 660.0 | Lock and dam closes to navagation. |
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1) 663.35 ft on 04/19/1965
2) 661.95 ft on 04/17/2001
3) 661.60 ft on 04/11/1997
4) 661.37 ft on 04/19/1969
5) 659.90 ft on 04/20/1952
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1) 639.65 ft on 08/17/1936
2) 642.96 ft on 01/27/1944
3) 643.95 ft on 12/13/1980
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