South Branch Kishwaukee River at De Kalb, IL

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

What floods at each level

From the National Weather Service, highest first.

• 17.5 ftBethany Road threatened.
• 16 ftMultiple structures threatened at Northern Illinois University. DeKalb Sanitary District property threatened.
• 15.5 ftColtonville Road threatened north of DeKalb. Park Avenue (IL-72) and Madison Avenue may be threatened in Genoa.
• 15 ftAnnie Glidden Road threatened near Taylor Street.
• 14.5 ftRoadways and structures threatened at Edgebrook Mobile Home Park. First Street threatened.
• 14 ftIL-64 is threatened west of Sycamore.
• 13.5 ftFlood waters overtop levee north of Hillcrest Street in DeKalb.
• 13 ftWater overtops the levee at the east lagoon at Northern Illinois University. Castle Drive and Lucinda Avenue threatened.
• 12.5 ftA few structures threatened at Northern Illinois University.
• 12 ftLow-lying portions of River Heights Golf Course inundated.
• 11 ftClifford Drive is threatened near Prairie Park in DeKalb. Creek Court threatened south of DeKalb.
• 10.5 ftResidences threatened near the river on Taylor Street. Fairview Drive is threatened near the river south of DeKalb.
• 9 ftTaylor Street is threatened. Low-lying portions of Lions Park inundated in DeKalb.
• 8.5 ftWater overtops low-lying banks in DeKalb.
• 7.5 ftGurler Road threatened southwest of DeKalb.
• 6 ftDeKalb Nature Trail is threatened near and south of Lincoln Highway.

Highest crests on record

1. 15.8 ft — July 2, 1983
2. 15.34 ft — August 24, 2007
3. 15.24 ft — October 11, 1954
4. 15.24 ft — October 1, 1954
5. 12.97 ft — July 18, 1996

Recent crests: 7.89 ft (July 16, 2024) · 11.25 ft (May 15, 2020) · 8.61 ft (March 29, 2020) · 7.38 ft (September 13, 2019) · 8.22 ft (March 10, 2019)

Up and down the river, and nearby

• DownstreamSouth Branch Kishwaukee River near Fairdale, IL
• Ferson Creek near St Charles, IL
• Kishwaukee River near Perryville, IL
• Mill Creek (IL) at Batavia, IL
• Kishwaukee River at Belvidere, IL
• Blackberry Creek at Montgomery, IL
• Blackberry Creek at Yorkville, IL
• Kishwaukee River at Marengo, IL