Flag Creek near Willow Springs, IL

Cook County, Illinois · USGS gauge 05533000 · NWS WLSI2 · Illinois river levels

Nearby: river levels near Lemont

Is Flag Creek near Willow Springs, IL flooding right now?

Flag Creek near Willow Springs, IL measured 3.91 ft on 2026-09-22 21:15:00 UTC. That observation was 6.1 ft below its 10 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
3.91 ft
as of 21 min ago
Streamflow
52 cfs
data refreshed 5 min ago

Minor flooding here begins at 10 ft, with major flooding at 13 ft. The highest crest on record was 13.71 ft on Thu, Sep 14, 1961.

Streamflow outlook

NOAA National Water Model forecast, issued 10 hours ago. The NWM models discharge for every river reach in the country, including the many gauges the National Weather Service does not forecast individually. It is a model, not an official NWS river forecast, and it predicts flow rather than water level.

Flood stages at this gauge

CategoryStageCurrent distance
Action9 ft5.1 ft below
Minor flood10 ft6.1 ft below
Moderate flood12 ft8.1 ft below
Major flood13 ft9.1 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
13.71 ft1961-09-14
10.57 ft2013-04-18
10.37 ft1996-07-18
10.36 ft2010-07-24
10.22 ft1976-06-13

Nearby gauges

GaugeDistanceCounty
Mcmahon Fen Rivulet 9 near Palos Hills, IL3.5 miCook County
Sawmill Creek near Lemont, IL4.0 miDuPage County
Chicago Sanitary and Ship Canal near Lemont, IL4.8 miDuPage County
Stony Creek (West) near Worth, IL4.9 miCook County
Summit Conduit Outfall at Summit, IL5.8 miCook County
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.

Sources: USGS monitoring location · NWS gauge & forecast