Kishwaukee River near Perryville, IL
River level and flood forecast · Winnebago County
Normal6.4 ftas of Mon 2:30 PM
The river is 5.6 ft below flood stage (12 ft).
Flow: 804 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Sep 20, 8:48 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 22 ft |
| Moderate flood stage | 18 ft |
| Flood stage | 12 ft |
| Action stage | 11.5 ft |
| Record crest (July 18, 1996) | 23.54 ft |
What floods at each level
From the National Weather Service, highest first.
- 30 ftBeltline Road and Kishwaukee Road threatened south of Rockford. A runway and taxiway may be inundated at Chicago Rockford International Airport.
- 28 ftIndustrial structures threatened along Beltline Road south of Rockford.
- 27 ftCommercial structures threatened along IL-251 (11th Street) near Rockford and New Milford.
- 25.5 ftBlackhawk Road threatened south of Rockford.
- 25 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.
- 24.5 ftIL-251 (11th Street) threatened near Rockford and New Milford.
- 23.5 ftRydberg Road threatened near Rockford and New Milford.
- 23 ftResidential structures threatened along Rydberg Road near Rockford and New Milford.
- 22 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.
- 21.5 ftResidences threatened along Schell Drive near Rockford and New Milford. Falcon Road threatened at Chicago Rockford International Airport.
- 21 ftMulford Road threatened south of Rockford.
- 19 ftCampsites threatened at Blackhawk Valley Campground south of Rockford.
- 17 ftWill James Road threatened near Rockford and New Milford.
- 16 ftLow-lying sections of Atwood Park inundated south of Rockford.
- 15 ftOld Perryville Road threatened south of Rockford. Widespread inundation of agricultural land and forest land near Chicago Rockford International Airport.
- 13 ftRoadways threatened at Blackhawk Valley Campground south of Rockford.
- 12 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 ftFlooding begins of low lying agricultural lands near the river.
Highest crests on record
- 23.54 ft — July 18, 1996
- 20.71 ft — February 21, 1994
- 20.48 ft — March 21, 1979
- 19.76 ft — February 22, 1997
- 19.65 ft — April 22, 1973
Recent crests: 12.64 ft (July 16, 2024) · 12.51 ft (April 4, 2024) · 10.87 ft (September 12, 2022) · 15.99 ft (May 18, 2020) · 12.1 ft (March 30, 2020)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (PRYI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.