Active Weather Alerts
River Flood Warning
Issued: 1:30 AM Aug. 18, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TUESDAY NIGHT... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Until late Tuesday night. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 20.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Monday was 20.9 feet. - Forecast...The river is expected to fall below flood stage late tomorrow evening and continue falling through midweek. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood &&
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