Rivers in Illinois

Fox River at Algonquin

McHenry County, IllinoisNWS ALGI2USGS 05550000Romeoville office

Below flood stage
1.52ftStage

Observed Sun, Sep 20, 12:45 PM CDT

Flood stage
3.00 ft
Record crest
4.50 ft1916

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood4.00 ft
Moderate flood3.30 ft
Minor flood3.00 ft
Action2.80 ft
  1. 6.00 ftAlgonquin Road (IL-62) is threatened west of the river in Algonquin.
  2. 4.00 ftFlooding affects residences in Algonquin along Lowe Drive.
  3. 3.50 ftSome homes flood in Valley View subdivision north of St Charles.
  4. 3.20 ftSome homes are threatened by flooding in Richardson subdivision near Algonquin.
  5. 3.00 ftFlooding begins to affect residences along River Road in Fox River Grove. Water inundates some streets in mobile home park in Northwest Elgin. Street flooding begins in Holiday Hills.

Crest history

81 crests on NOAA’s list since 1916.

#DateStage
1April 1, 19164.50 ft
2July 5, 19384.42 ft
3March 6, 19184.40 ft
4July 23, 20174.39 ft
5March 16, 19294.37 ft
6March 30, 19204.16 ft
7May 1, 19214.15 ft
8April 23, 20134.03 ft
9March 12, 19744.01 ft
10April 6, 19604.01 ft
11March 21, 19194.00 ft
12April 2, 19794.00 ft
13October 3, 19873.99 ft
14April 23, 19933.75 ft
15March 20, 19433.75 ft
16May 4, 19733.71 ft
17August 25, 20073.51 ft
18April 11, 19833.51 ft
19April 4, 19243.50 ft
20March 24, 19483.48 ft
21March 18, 19443.46 ft
22June 17, 20003.42 ft
23March 31, 19623.37 ft
24May 14, 19333.37 ft
25March 18, 19463.35 ft

Most recent crests

  • May 23, 2020: 3.16 ft
  • September 17, 2019: 2.97 ft
  • June 26, 2018: 3.09 ft
  • July 23, 2017: 4.39 ft
  • April 23, 2013: 4.03 ft
  • June 19, 2008: 2.99 ft
  • August 25, 2007: 3.51 ft
  • May 22, 2004: 3.32 ft
  • October 27, 2002: 3.33 ft
  • February 16, 2001: 2.88 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.