RIVER GAUGE · GRAND CALUMET RIVER
Grand Calumet River above Hammond (Columbia Ave)
Lake County, Indiana
Water level6.63 ft
Flow—
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action8 ft
Minor flood9.5 ft
Moderate flood12 ft
Major flood13 ft
The past week
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What floods at each level
- 13.5 ft
Residences threatened along Roosevelt Street in Hammond.
- 13 ft
Industrial structures threatened near Hohman Avenue and Hoffman Street in Hammond.
- 12 ft
Columbia Avenue threatened in Hammond.
- 11 ft
Calumet Avenue threatened north of the river in Hammond. Industrial parking lots threatened near Hohman Avenue and Hoffman Street in Hammond.
- 10 ft
Roosevelt Street threatened at Birch Avenue in Hammond.
- 9.5 ft
Sanitary District of Hammond property threatened.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Dec 11, 2020 | 9.32 ft | 288 cfs |
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