South Branch Kishwaukee River at Dekalb, IL
Is South Branch Kishwaukee River at Dekalb, IL flooding right now?
South Branch Kishwaukee River at Dekalb, IL measured 7.13 ft on 2026-09-22 20:30:00 UTC. That observation was 2.9 ft below its 10 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
7.13 ft
Streamflow
685 cfs
Minor flooding here begins at 10 ft, with major flooding at 12.5 ft. The highest crest on record was 15.8 ft on Sat, Jul 2, 1983.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 8.5 ft | 1.4 ft below |
| Minor flood | 10 ft | 2.9 ft below |
| Moderate flood | 11 ft | 3.9 ft below |
| Major flood | 12.5 ft | 5.4 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 15.8 ft | 1983-07-02 |
| 15.34 ft | 2007-08-24 |
| 15.24 ft | 1954-10-11 |
| 15.24 ft | 1954-10-01 |
| 12.97 ft | 1996-07-18 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| South Branch Kishwaukee River near Fairdale IL | 14.3 mi | DeKalb County |
| Ferson Creek near St. Charles, IL | 21.5 mi | Kane County |
| Mill Creek near Batavia, IL | 21.9 mi | Kane County |
| Kishwaukee River near Perryville, IL | 21.9 mi | Winnebago County |
| Kishwaukee River at Belvidere, IL | 23.0 mi | Boone County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.