Total streamflow across the Naugatuck River was last observed at 627 cfs, and is expected to yield approximately 1,244 acre-ft of water today; about 73% of normal. Average streamflow for this time of year is 860 cfs, with recent peaks last observed on 2021-09-02 when daily discharge volume was observed at 14,338 cfs.

Maximum discharge along the river is currently at the Naugatuck River At Beacon Falls reporting a streamflow rate of 440 cfs. However, the streamgauge with the highest stage along the river is the Naugatuck River At Thomaston with a gauge stage of 2.44 ft. This river is monitored from 2 different streamgauging stations along the Naugatuck River, the highest being situated at an altitude of 378 ft, the Naugatuck River At Thomaston.

The Naugatuck River is a 40-mile-long river that flows through western Connecticut. It has a rich history, having been used for transportation and industry since colonial times. The river rises in Torrington and flows through several towns, including Waterbury and Naugatuck, before emptying into the Housatonic River in Derby. The river's hydrology has been modified by numerous dams and reservoirs, including the Thomaston Dam and the Shepaug Dam. These structures have created recreational opportunities, such as fishing and boating. Additionally, the river provides water for agricultural purposes, including irrigation and livestock watering. Despite its industrial past, the Naugatuck River has undergone significant cleanup efforts in recent years to improve water quality and restore its natural habitat for fish and wildlife.