Fox River near Johnsburg, IL
River level and flood forecast · McHenry County
Normal4.0 ftas of Mon 1:45 PM
The river is 2.5 ft below flood stage (6.5 ft).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 7.5 ft |
| Moderate flood stage | 7 ft |
| Flood stage | 6.5 ft |
| Action stage | 6 ft |
| Record crest (July 4, 1938) | 8.9 ft |
What floods at each level
From the National Weather Service, highest first.
- 4.5 ftFox Waterway Agency considers "no wake" order for the Fox River from Stratton Dam to Pistakee Lake.
Highest crests on record
- 8.9 ft — July 4, 1938
- 7.55 ft — April 6, 1960
- 7.47 ft — April 22, 2013
- 7.37 ft — July 17, 2017
- 7.1 ft — October 3, 1986
Recent crests: 6.1 ft (May 23, 2020) · 6.26 ft (September 17, 2019) · 7.37 ft (July 17, 2017) · 7.47 ft (April 22, 2013) · 6.5 ft (June 18, 2008)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (JHNI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.