Major Flood
11.5 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
10.5 ft
Minor Flood
10 ft
Action Stage
9 ft
What Floods at Each Level
12.5 ft
Widespread inundation of roadways and structures in the floodplain reaches 2 blocks from the canal in Markham and Harvey.
11 ft
Multiple structures are threatened in Markham and Harvey.
10 ft
Multiple roadways are threatened in Markham and Harvey. Low-lying sections of Martin Luther King Park are inundated in Markham.
9 ft
Water overflows low-lying river banks along the canal in Markham and Harvey.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Oct 10, 1954 | 12 ft | — |
| Jul 12, 1957 | 11.5 ft | — |
| Sep 13, 2008 | 10 ft | — |
About This Gauge
USGS Site
NWS LID
MKHI2
River
Calumet Union Drainage Canal
County
Cook, IL
Coordinates
41.5967°N, 87.6657°W
Get Flood Alerts for Calumet Union Drainage Canal
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 Calumet Union Drainage Canal at Markham?
The Calumet Union Drainage Canal at Markham gauge is maintained by USGS (site 05536310) 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 Calumet Union Drainage Canal at Markham?
The NWS-defined flood stage for Calumet Union Drainage Canal at Markham is 10 feet. Action stage begins at 9 feet. Moderate flooding starts at 10.5 feet, and major flooding at 11.5 feet.
How do I get alerts when Calumet Union Drainage Canal rises?
Download StormCast free on Google Play, go to River Gauges, and add Calumet Union Drainage Canal at Markham 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 Calumet Union Drainage Canal at Markham gauge located?
The gauge is located in Cook County, Illinois at coordinates 41.5967°N, 87.6657°W. USGS site number: 05536310. 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