Observation history unavailable for thie location.
Flood Impacts
633.2
Water levels reach the flood of record.
633.0
Water begins to flow over the lock walls and the protective earthen dikes.
631.0
Lock and dam 9 is closed to navigation.
Historical Crests
Low Water Records
1) 633.16 ft on 04/24/1965
2) 631.22 ft on 04/21/2001
3) 631.05 ft on 04/14/1997
4) 629.42 ft on 04/22/1969
5) 629.08 ft on 06/30/1993
6) 628.68 ft on 04/23/1952
7) 628.45 ft on 05/05/1975
8) 628.38 ft on 04/21/1951
9) 627.90 ft on 04/10/1967
10) 627.53 ft on 10/04/1986
1) 606.90 ft on 08/20/1936
2) 607.70 ft on 07/28/1937
3) 610.20 ft on 12/09/1939
4) 610.50 ft on 01/08/1940
5) 610.90 ft on 11/09/1967