About this river
Grand Calumet River is a 6.8 mile river near Urban Kayaks in Illinois. Streamflow is measured at the USGS gauge Grand Calumet River at Columbia AV at Hammond, IN (site 05536356). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2021 to 2025
Grand Calumet River typically runs highest in August, at a median 60 cfs, and lowest in February, at 27 cfs. The highest flow on record for any single day is 235 cfs, in 2021.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 28 | 11 to 105 | |
| February | 27 | 10 to 98 | |
| March | 29 | 11 to 94 | |
| April | 30 | 13 to 88 | |
| May | 32 | 11 to 75 | |
| June | 35 | 18 to 69 | |
| July | 58 | 33 to 87 | |
| August | 60 | 40 to 93 | |
| September | 56 | 31 to 95 | |
| October | 43 | 23 to 70 | |
| November | 33 | 17 to 57 | |
| December | 30 | 13 to 108 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 5 years of record. Statistics published by the US Geological Survey for Grand Calumet River at Columbia AV at Hammond, IN (site 05536356). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Grand Calumet River. Ramp data comes from the USGS national boat-ramp inventory.
- Powderhorn LakePowderhorn LakePublic
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