Major Flood
20 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
16 ft
Minor Flood
14 ft
Action Stage
12.5 ft
What Floods at Each Level
22 ft
Industrial structures are threatened at Argonne National Laboratory.
20 ft
Northgate Road is threatened at South Cass Avenue south of Darien.
18 ft
Numerous minor roadways are threatened at Argonne National Laboratory.
17.5 ft
Bluff Road west of the creek is threatened at Argonne National Laboratory. Trails are threatened near the creek mouth in Waterfall Glen.
16.5 ft
South Cass Avenue is threatened at the creek south of Darien.
15.5 ft
Water treatment plan property is threatened at Argonne National Laboratory.
15 ft
Picnic areas are inundated near the main waterfall in Waterfall Glen.
13 ft
Low-lying trails are threatened near the main waterfall in Waterfall Glen.
12 ft
Water overflows low-lying banks at Argonne National Laboratory.
Impact statements from the National Weather Service, describing what typically happens at each water level.
Low-Water Impacts
8
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 |
|---|---|---|
| Jul 17, 1996 | 17.53 ft | 3,070 cfs |
| Apr 17, 2013 | 15.24 ft | 1,670 cfs |
| Feb 20, 1997 | 14.64 ft | 1,360 cfs |
About This Gauge
USGS Site
NWS LID
LMTI2
River
Sawmill Creek (IL)
County
Du Page, IL
Coordinates
41.7078°N, 87.9628°W
Get Flood Alerts for Sawmill Creek (IL)
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 Sawmill Creek (IL) near Lemont?
The Sawmill Creek (IL) near Lemont gauge is maintained by USGS (site 05533400) 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 Sawmill Creek (IL) near Lemont?
The NWS-defined flood stage for Sawmill Creek (IL) near Lemont is 14 feet. Action stage begins at 12.5 feet. Moderate flooding starts at 16 feet, and major flooding at 20 feet.
How do I get alerts when Sawmill Creek (IL) rises?
Download StormCast free on Google Play, go to River Gauges, and add Sawmill Creek (IL) 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 Sawmill Creek (IL) near Lemont gauge located?
The gauge is located in Du Page County, Illinois at coordinates 41.7078°N, 87.9628°W. USGS site number: 05533400. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
Downstream: Des Plaines River near Lemont
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey