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| Critical Stages |
| 22' -Action |
23' -Flood |
23' -Moderate Flood |
31' -Major Flood |
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| Forecast not available for this location. |
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| Observation history unavailable for thie location. |
| Flood Impacts |
| 31.0 | Water affects the Marina building in Henry. |
| 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. |
| Historical Crests |
Low Water Records |
1) 32.67 ft on 03/22/1979
2) 32.02 ft on 03/07/1985
3) 30.74 ft on 03/22/1982
4) 30.70 ft on 12/08/1982
5) 30.56 ft on 03/02/1997
6) 28.84 ft on 05/29/1995
7) 28.58 ft on 11/23/1985
8) 28.28 ft on 05/18/2002
9) 27.93 ft on 01/17/2005
10) 27.92 ft on 11/21/1985
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Historical low water information is not available.
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Data provided by NOAA Advanced Hydrologic Prediction Service
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