Flood Warning Issued for DuPage and Will Counties, Illinois
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NWS Chicago has issued a Flood Warning for the East Branch Du Page River at Bolingbrook and Du Page River at Shorewood, with minor flooding forecast from this afternoon to late tonight.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Northeastern Illinois
- Issued
- August 1, 2026
- Issuing authority
- NWS Chicago IL
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Flood Warning issued by NWS Chicago IL. Effective from August 1 at 8:13AM CDT, with onset at 12:18PM CDT. Expires August 2 at 2:15AM CDT and ends August 2 at 4:00AM CDT.
Affected Areas
DuPage County and Will County, Illinois. Specifically, East Branch Du Page River from Maple Avenue in Lisle downstream to confluence with West Branch DuPage River, including the Bolingbrook gauge. Also Du Page River at Shorewood.
What You Should Do
Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. Turn around, don't drown when encountering flooded roads.
Expected Conditions
Minor flooding is forecast. At 7:40 AM CDT the stage was 18.0 feet. The river is expected to rise above flood stage (20.0 feet) this afternoon to a crest of 20.3 feet, then fall below flood stage late this evening. At 20.0 feet, DuPage River Greenway Trail is threatened east of the river near Royce Road in Bolingbrook. Trails threatened at Green Valley Forest Preserve near Woodridge.
Timeline
Alert in effect from this afternoon to late tonight, with crest this afternoon and fall below flood stage late this evening.
Original source: NOAA Official Notice ↗
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