| 32.5 | Illinois Route 18 in Marshall County is closed. Parts of Illinois Route 17 between Sparland and Lacon are closed. | | 32.0 | Water begins flooding parts of Illinois Route 18 between Henry and Illinois Route 26. Parts of Illinois Route 17 begin to flood. | | 30.5 | The Marina building, Waterworks Park, and grain loading facility in Henry are flooded. | | 29.5 | A few homes begin to flood in Henry. | | 28.0 | Flooding begins to affect buildings east of Illinois Route 29 in Sparland. | | 23.0 | Water begins to affect the marina in Henry along with minor flooding of land adjacent to the river. |
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1) 32.67 ft on 03/22/1979
2) 32.02 ft on 03/07/1985
3) 31.52 ft on 03/13/2009
4) 31.10 ft on 09/19/2008
5) 30.74 ft on 03/22/1982
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Low water records are unavailable.
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