Chicago Sanitary and Ship Canal near Lemont, IL

DuPage County, Illinois · USGS gauge 05536890 · NWS LCSI2 · Chicago Sanitary and Ship Canal flood status · Illinois river levels

Nearby: river levels near Lemont

Is Chicago Sanitary and Ship Canal near Lemont, IL flooding right now?

Chicago Sanitary and Ship Canal near Lemont, IL measured 25.24 ft on 2026-09-22 21:02:00 UTC. No NWS minor flood stage is published for this gauge. Its action level is 32 ft; action level is not flood stage.

Gauge height

25.24 ft

as of 35 min ago

Streamflow

4,590 cfs

data refreshed 6 min ago

The highest crest on record was 29.83 ft on Mon, May 18, 2020.

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

Category	Stage	Current distance
Action	32 ft	6.8 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

Stage	Date
29.83 ft	2020-05-18
28.81 ft	2008-09-14
28.73 ft	2013-04-18
28.11 ft	2008-12-27
27.63 ft	2017-10-15

Nearby gauges

Gauge	Distance	County
Sawmill Creek near Lemont, IL	1.1 mi	DuPage County
Chicago Sanitary and Ship Canal at Lemont, IL	2.1 mi	Cook County
Des Plaines River near Lemont, IL	3.6 mi	Will County
Long Run near Lemont, IL	3.8 mi	Cook County
Flag Creek near Willow Springs, IL	4.8 mi	Cook 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