Chicago Sanitary and Ship Canal at Lemont, IL
River level and flood forecast · Du Page County
Normalas of Mon 2:32 PM
Flow: 545 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Action stage | 32 ft |
| Record crest (May 18, 2020) | 29.83 ft |
What floods at each level
From the National Weather Service, highest first.
- 10000 ftHigh streamflows begin to cause closures of portions of the Chicago Sanitary and Ship Canal.
- 7000 ftHigh streamflows begin to impact shipping interests along the river.
Highest crests on record
- 29.83 ft — May 18, 2020
- 28.81 ft — September 14, 2008
- 28.73 ft — April 18, 2013
- 28.11 ft — December 27, 2008
- 27.63 ft — October 15, 2017
Recent crests: 29.83 ft (May 18, 2020) · 26.82 ft (May 1, 2019) · 26.7 ft (February 21, 2018) · 27.63 ft (October 15, 2017) · 25.57 ft (March 30, 2017)
Up and down the river, and nearby
- UpstreamChicago Sanitary and Ship Canal at Stickney, IL
- DownstreamChicago Sanitary and Ship Canal at Romeoville, IL
- Sawmill Creek (IL) near Lemont, IL
- Des Plaines River near Lemont, IL
- Long Run near Lemont, IL
- Flag Creek near Willow Springs, IL
- East Branch Du Page River at Bolingbrook, IL
- Stony Creek at Worth, IL
- West Branch Du Page River near Naperville, IL
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (LCSI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.