| 8.0 | Damage begins in River Isle subdivision 1/2 mile upstream of Momence. | | 6.0 | Flooding affects the campgrounds located 3 miles downstream of state line. | | 5.5 | Island park in Momence floods and some basement flooding begins to homes in River Isle. | | 5.0 | Some flooding begins to the lowest areas along the river. | | 4.0 | Lowland flooding begins in River Isle subdivision 1/2 mile upstream and in subdivision 3 miles dowstream of state line. |
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1) 10.51 ft on 03/06/1979
2) 9.09 ft on 01/25/1930
3) 8.90 ft on 01/04/1928
4) 8.90 ft on 01/04/1919
5) 8.82 ft on 02/24/1959
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Low water records are unavailable.
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