Winter Weather Advisory
2026-03-07T00:00:00-07:00

* WHAT...Snow and blowing snow expected. Total snow accumulations between 5 and 8 inches, with the heaviest snow south of Castle Rock. Winds gusting as high as 35 mph. * WHERE...Castle Rock. * WHEN...From 6 AM this morning to midnight MST tonight. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Friday morning and evening commutes.


Kishwaukee River River Levels

Last Updated: March 6, 2026

The Kishwaukee River is a 63-mile-long river in northern Illinois that flows through Winnebago, Boone, McHenry, and DeKalb counties.


Summary

Total streamflow across the Kishwaukee River was last observed at 419 cfs, and is expected to yield approximately 831 acre-ft of water today; about 27% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,527 cfs, with recent peaks last observed on 2013-04-20 when daily discharge volume was observed at 22,020 cfs.

Maximum discharge along the river is currently at the Kishwaukee River Near Perryville reporting a streamflow rate of 280 cfs. This is also the highest stage along the Kishwaukee River, with a gauge stage of 5.47 ft at this location. This river is monitored from 2 different streamgauging stations along the Kishwaukee River, the highest being situated at an altitude of 740 ft, the Kishwaukee River At Belvidere.




15-Day Weather Outlook


River Details

Last Updated 2026-03-05
Discharge Volume 831 ACRE-FT
Streamflow 419.0 cfs
+3.0 cfs (+0.72%)
Percent of Normal 27.45%
Maximum 22,020.0 cfs
2013-04-20
Seasonal Avg 1,527 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Kishwaukee River At Belvidere
USGS 05438500
148 cfs 1.2 ft 2.07
Kishwaukee River Near Perryville
USGS 05440000
280 cfs 5.47 ft 0
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Kishwaukee River, locally known as simply "The Kish", is a 63.4-mile-long (102.0 km) river in the U.S. state of Illinois.