Major Flood
31 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
24 ft
Minor Flood
23 ft
Action Stage
22 ft
What Floods at Each Level
32.5 ft
Illinois Route 18 in Marshall County is closed. Parts of Illinois Route 17 between Sparland and Lacon are closed.
32 ft
Water begins flooding parts of Illinois Route 18 between Henry and Illinois Route 26. Parts of Illinois Route 17 begin to flood.
30.5 ft
The Marina building is flooded. Inundation from Waterworks Park on Cromwell Drive toward old grain elevator location on Water Street.
29.6 ft
A few homes begin to flood in Henry.
28.5 ft
Hennepin levee overtopped.
28 ft
Flooding begins to affect buildings east of Illinois Route 29 in Sparland.
23 ft
Water begins to affect the marina in Henry along with minor flooding of land adjacent to the river.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Apr 22, 2013 | 32.94 ft | — |
| Mar 21, 1979 | 32.67 ft | — |
| May 22, 1943 | 32.2 ft | — |
About This Gauge
USGS Site
NWS LID
HNYI2
River
Illinois River
County
Marshall, IL
Coordinates
41.1073°N, 89.3562°W
Get Flood Alerts for Illinois River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Illinois River near Henry?
The Illinois River near Henry gauge is maintained by USGS (site 05558300) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Illinois River near Henry?
The NWS-defined flood stage for Illinois River near Henry is 23 feet. Action stage begins at 22 feet. Moderate flooding starts at 24 feet, and major flooding at 31 feet.
How do I get alerts when Illinois River rises?
Download StormCast free on Google Play, go to River Gauges, and add Illinois River near Henry to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Illinois River near Henry gauge located?
The gauge is located in Marshall County, Illinois at coordinates 41.1073°N, 89.3562°W. USGS site number: 05558300. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Illinois River
On This River
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Source & Notes
Data provided by: USGS & USACE, Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.