Major Flood
38 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
35 ft
Minor Flood
30.5 ft
Action Stage
30 ft
What Floods at Each Level
41 ft
Multiple residences are threatened along Canal Street in Blue Island. Parking lots threatened along Cal-Sag Road in Crestwood.
40.5 ft
Canal Street is threatened in Blue Island.
40 ft
Water overtops banks in Crestwood.
39 ft
Residences threatened along Fulton Street in Blue Island. Widespread inundation of Waters Edge Golf Club in Worth.
38.5 ft
Structures and roadways are threatened at Sycamore Mobile Home Park in Blue Island.
38 ft
Division Street is threatened in Blue Island. Low-lying portions of Waters Edge Golf Club are inundated in Worth. Backwater casues Stony Creek to threaten a few residential structures in Worth. Backwater causes Stony Creek to threaten 111th Street in Worth.
37.5 ft
Fulton Street is threatened in Blue Island.
36.5 ft
Parking lots are threatened along Fulton Street in Blue Island.
36 ft
Industrial property is threatened in Alsip.
35 ft
Water overtops low-lying banks in Alsip.
33 ft
Water overtops low-lying banks in Blue Island, Chicago, and McMahon Woods. Backwater causes Stony Creek to overtop low-lying banks in Worth.
30.5 ft
USACE and MWRD consider opening of O'Brien Lock to reduce flood impacts, depending on the water level of Lake Michigan.
Impact statements from the National Weather Service, describing what typically happens at each water level.
Low-Water Impacts
23.6
Low water levels begin to impact shipping interests along the river.
What happens as water levels drop, per the National Weather Service.
7-Day Water Level Chart
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About This Gauge
Get Flood Alerts for Cal-Sag Channel
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 Cal-Sag Channel at Blue Island?
The Cal-Sag Channel at Blue Island gauge is maintained by USGS (site 05536368) 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 Cal-Sag Channel at Blue Island?
The NWS-defined flood stage for Cal-Sag Channel at Blue Island is 30.5 feet. Action stage begins at 30 feet. Moderate flooding starts at 35 feet, and major flooding at 38 feet.
How do I get alerts when Cal-Sag Channel rises?
Download StormCast free on Google Play, go to River Gauges, and add Cal-Sag Channel at Blue Island 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 Cal-Sag Channel at Blue Island gauge located?
The gauge is located in Cook County, Illinois at coordinates 41.6528°N, 87.6703°W. USGS site number: 05536368. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey