| 640.0 | Water begins to go over the protective earthen dikes. | | 639.0 | Water begins to flow over lock walls. | | 638.4 | Water levels reach the flood of record. | | 636.0 | Lock and dam 8 is closed to navigation. |
|
1) 638.40 ft on 04/22/1965
2) 636.45 ft on 04/12/1997
3) 636.21 ft on 04/18/2001
4) 635.24 ft on 04/20/1969
5) 634.52 ft on 04/20/1952
6) 633.94 ft on 06/26/1993
7) 633.90 ft on 04/20/1951
8) 633.86 ft on 05/03/1975
9) 633.35 ft on 04/07/1967
10) 633.10 ft on 04/09/1986
|
1) 615.30 ft on 08/18/1936
2) 616.10 ft on 10/09/1937
3) 617.40 ft on 01/21/1938
4) 619.70 ft on 01/28/1977
4) 619.70 ft on 12/14/1980
|
|
