Major Flood
15 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
13 ft
Minor Flood
10 ft
Action Stage
9.5 ft
What Floods at Each Level
18.5 ft
Residences threatened near Bluff Road and Lemont Road.
16 ft
Lemont Road threatened north of the river. Flood waters may overflow into the Chicago Sanitary & Ship Canal near Lemont.
15 ft
Will County Generating Station property is threatened. Isle a la Cache Museum levee is overtopped.
14 ft
Bluff Road is threatened west of Lemont Road.
13.5 ft
Portions of Centennial Trail near the Romeo Road trailhead are threatened. Flood waters may overflow into the Chicago Sanitary & Ship Canal near Romeoville.
13 ft
The lower parking lot at Isle a la Cache Museum begins to flood.
12.5 ft
Romeo Road is threatened in Romeoville.
11.5 ft
Veterans Memorial Trail threatened north of the river at Keepataw Preserve.
11 ft
Trails at the Isle a la Cache Museum are inundated. Water may begin to overflow into the Chicago Sanitary & Ship Canal near Willow Springs.
10 ft
Low-lying areas of the Black Partridge Forest Preserve are inundated.
Impact statements from the National Weather Service, describing what typically happens at each water level.
Low-Water Impacts
4.5
Approximate stage of the 1-in-10 annual chance flow (7-day average).
4.0
River nears zero flow.
What happens as water levels drop, per the National Weather Service.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| May 17, 2020 | 13.24 ft | 10,800 cfs |
| Apr 18, 2013 | 12.58 ft | 7,480 cfs |
| Oct 14, 2017 | 12.41 ft | 7,200 cfs |
About This Gauge
USGS Site
NWS LID
LEMI2
River
Des Plaines River
County
Will, IL
Coordinates
41.6724°N, 88.0285°W
Get Flood Alerts for Des Plaines River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Des Plaines River near Lemont?
The Des Plaines River near Lemont gauge is maintained by USGS (site 05533600) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Des Plaines River near Lemont?
The NWS-defined flood stage for Des Plaines River near Lemont is 10 feet. Action stage begins at 9.5 feet. Moderate flooding starts at 13 feet, and major flooding at 15 feet.
How do I get alerts when Des Plaines River rises?
Download StormCast free on Google Play, go to River Gauges, and add Des Plaines River near Lemont to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Des Plaines River near Lemont gauge located?
The gauge is located in Will County, Illinois at coordinates 41.6724°N, 88.0285°W. USGS site number: 05533600. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Des Plaines River
On This River
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.