Rivers in Illinois

Fox River near Johnsburg

McHenry County, IllinoisNWS JHNI2USGS 05548500Romeoville office

Below flood stage
4.27ftStage

Observed Mon, Sep 21, 3:45 AM CDT

Flood stage
6.50 ft
Record crest
8.90 ft1938

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood7.50 ft
Moderate flood7.00 ft
Minor flood6.50 ft
Action6.00 ft
  1. 4.50 ftFox Waterway Agency considers "no wake" order for the Fox River from Stratton Dam to Pistakee Lake.

Flood outlook

Significant river flooding is possible here through September 26.

Weather conditions indicate that significant flooding could occur; it is neither certain nor imminent.

The five-day outlook is from the Weather Prediction Center with the River Forecast Centers.

Crest history

14 crests on NOAA’s list since 1938.

#DateStage
1July 4, 19388.90 ft
2April 6, 19607.55 ft
3April 22, 20137.47 ft
4July 17, 20177.37 ft
5October 3, 19867.10 ft
6April 2, 19797.07 ft
7April 23, 19936.65 ft
8June 18, 20086.50 ft
9March 11, 19746.48 ft
10August 27, 20076.39 ft
11September 17, 20196.26 ft
12September 26, 19726.14 ft
13May 23, 20206.10 ft
14June 3, 20006.06 ft

Most recent crests

  • May 23, 2020: 6.10 ft
  • September 17, 2019: 6.26 ft
  • July 17, 2017: 7.37 ft
  • April 22, 2013: 7.47 ft
  • June 18, 2008: 6.50 ft
  • August 27, 2007: 6.39 ft
  • June 3, 2000: 6.06 ft
  • April 23, 1993: 6.65 ft
  • October 3, 1986: 7.10 ft
  • April 2, 1979: 7.07 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the North Central River Forecast Center. Forecasts are not available. Only observed stages are available for this point.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.