Rivers in Illinois
Kishwaukee River near Perryville
Below flood stage
8.89ftStage
Observed Tue, Sep 22, 2:30 AM CDT
- Flood stage
- 12.00 ft
- Record crest
- 23.54 ft1996
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 22.00 ft |
| Moderate flood | 18.00 ft |
| Minor flood | 12.00 ft |
| Action | 11.50 ft |
- 30.00 ftBeltline Road and Kishwaukee Road threatened south of Rockford. A runway and taxiway may be inundated at Chicago Rockford International Airport.
- 28.00 ftIndustrial structures threatened along Beltline Road south of Rockford.
- 27.00 ftCommercial structures threatened along IL-251 (11th Street) near Rockford and New Milford.
- 25.50 ftBlackhawk Road threatened south of Rockford.
- 25.00 ftWidespread inundation of the floodplain reaches numerous structures along Will James Road, Schell Drive, Milton Road, Vesta Drive, Ralph Road, and Rydberg Road near Rockford and New Milford.
- 24.50 ftIL-251 (11th Street) threatened near Rockford and New Milford.
- 23.50 ftRydberg Road threatened near Rockford and New Milford.
- 23.00 ftResidential structures threatened along Rydberg Road near Rockford and New Milford.
- 22.00 ftResidential structures threatened along Will James Road near Rockford and New Milford. Structures threatened at Rockford Christian Camp. Water nears a runway at Chicago Rockford International Airport.
- 21.50 ftResidences threatened along Schell Drive near Rockford and New Milford. Falcon Road threatened at Chicago Rockford International Airport.
- 21.00 ftMulford Road threatened south of Rockford.
- 19.00 ftCampsites threatened at Blackhawk Valley Campground south of Rockford.
- 17.00 ftWill James Road threatened near Rockford and New Milford.
- 16.00 ftLow-lying sections of Atwood Park inundated south of Rockford.
- 15.00 ftOld Perryville Road threatened south of Rockford. Widespread inundation of agricultural land and forest land near Chicago Rockford International Airport.
- 13.00 ftRoadways threatened at Blackhawk Valley Campground south of Rockford.
- 12.00 ftWater overtops low-lying banks in Blackhawk Springs Forest Preserve and in south Rockford near Chicago Rockford International Airport. Trails threatened at Blackhawk Springs Forest Preserve.
- 10.00 ftFlooding begins of low lying agricultural lands near the river.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
84 crests on NOAA’s list since 1940.
| # | Date | Stage |
|---|---|---|
| 1 | July 18, 1996 | 23.54 ft |
| 2 | February 21, 1994 | 20.71 ft |
| 3 | March 21, 1979 | 20.48 ft |
| 4 | February 22, 1997 | 19.76 ft |
| 5 | April 22, 1973 | 19.65 ft |
| 6 | January 6, 1946 | 19.50 ft |
| 7 | March 31, 1960 | 19.05 ft |
| 8 | February 20, 1971 | 19.03 ft |
| 9 | June 15, 1999 | 18.96 ft |
| 10 | March 20, 1948 | 18.78 ft |
| 11 | March 15, 1944 | 18.63 ft |
| 12 | July 3, 1978 | 18.39 ft |
| 13 | May 17, 1974 | 18.27 ft |
| 14 | May 29, 1996 | 18.21 ft |
| 15 | April 19, 2013 | 18.19 ft |
| 16 | July 25, 2010 | 18.16 ft |
| 17 | December 29, 2008 | 17.83 ft |
| 18 | August 25, 2007 | 17.56 ft |
| 19 | March 16, 1943 | 17.43 ft |
| 20 | February 25, 1949 | 17.25 ft |
| 21 | January 23, 1969 | 17.09 ft |
| 22 | February 10, 1966 | 17.04 ft |
| 23 | February 26, 1951 | 17.03 ft |
| 24 | January 31, 1988 | 16.70 ft |
| 25 | March 24, 1993 | 16.62 ft |
Most recent crests
- July 16, 2024: 12.64 ft
- April 4, 2024: 12.51 ft
- September 12, 2022: 10.87 ft
- May 18, 2020: 15.99 ft
- March 30, 2020: 12.10 ft
- September 14, 2019: 14.69 ft
- May 3, 2019: 12.47 ft
- March 14, 2019: 15.69 ft
- February 24, 2019: 13.08 ft
- October 7, 2018: 12.28 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.
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.