| 29.0 | Route 123 is closed. Water overtops Illinois Midland railroad tracks at 4th Street. | | 25.0 | Some residences on the east side of Petersburg flood. | | 23.0 | Extensive agricultural and lowland flooding occurs. | | 21.0 | Park and recreational land near the river in Petersburg is flooded. | | 15.0 | Water begins to flood agricultural areas and local parks near the river. |
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1) 33.90 ft on 05/20/1943
2) 30.75 ft on 05/14/2002
3) 29.84 ft on 04/14/1994
4) 27.45 ft on 05/11/1996
5) 26.50 ft on 01/25/1974
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1) 0.00 ft on 10/01/1990
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