| 160000.0 | At this approximate discharge, the Corps will raise the gates out of the water, creating open river conditions. | | 28.0 | In Monkey Run, at least a dozen homes are flooded at this level. | | 27.8 | Saverton homes begin flooding near this level. | | 27.0 | Sny Island Cell #1 levee is overtopped | | 26.0 | In Monkey Run (north of Saverton), houses begin flooding near this level. | | 25.5 | Near this level, Highway E becomes flooded south of the bridge. Also, homes in Riverview Acres (just south of the lock and dam) begin to flood. | | 25.0 | Water enters Lock House. | | 21.4 | Near this level, the lock is closed to navigation. This level will vary with circumstance. Also, BNSF railroad tracks just south of Hannibal are flooded. | | 19.6 | The north end of Saverton Road begins to flood. | | 13.5 | This is the upper navigational limit for the pool at Lock & Dam 22. | | 13.4 | This is the target pool for navigation at Lock & Dam 22. | | 13.0 | This is the lower navigational limit for the pool at Lock & Dam 22. | | 12.0 | Buildings in unprotected areas are damaged. At this approximate stage, the Corps will lift all gates out of the river, creating open river conditions. This takes place at a discharge of around 160,000 cfs. |
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1) 29.58 ft on 07/25/1993
2) 28.00 ft on 06/18/2008
3) 26.80 ft on 04/25/1973
4) 26.12 ft on 05/16/2001
5) 24.10 ft on 10/05/1986
6) 23.68 ft on 05/30/1996
7) 23.40 ft on 04/05/1983
8) 23.26 ft on 05/01/1965
9) 22.99 ft on 04/15/1998
10) 22.76 ft on 06/10/1947
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1) 3.34 ft on 09/12/2000
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