Total streamflow across the Little Calumet River was last observed at 166 cfs, and is expected to yield approximately 329 acre-ft of water today; about 102% of normal. Average streamflow for this time of year is 163 cfs, with recent peaks last observed on 2024-04-02 when daily discharge volume was observed at 2,206 cfs.

Maximum discharge along the river is currently at the Little Calumet River At South Holland reporting a streamflow rate of 102 cfs. This is also the highest stage along the Little Calumet River, with a gauge stage of 5.98 ft at this location. This river is monitored from 3 different streamgauging stations along the Little Calumet River, the highest being situated at an altitude of 617 ft, the Little Calumet River At Porter.