Total streamflow across the Housatonic River was last observed at 5,365 cfs, and is expected to yield approximately 10,641 acre-ft of water today; about 44% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 12,325 cfs, with recent peaks last observed on 2011-09-09 when daily discharge volume was observed at 92,490 cfs.

Maximum discharge along the river is currently at the Housatonic River At Gaylordsville reporting a streamflow rate of 1,970 cfs. However, the streamgauge with the highest stage along the river is the Housatonic River Nr Ashley Falls with a gauge stage of 4.89 ft. This river is monitored from 5 different streamgauging stations along the Housatonic River, the highest being situated at an altitude of 693 ft, the Housatonic River Near Great Barrington.