Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Norwalk River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Norwalk River, the highest being situated at an altitude of ft, the .

The Norwalk River is a 23-mile-long river in southwestern Connecticut that flows from its source in Ridgefield to its mouth in Norwalk. Historically, the river was an important source of power for mills and factories that were built along its banks in the 18th and 19th centuries. Today, the river is used primarily for recreational purposes, including fishing, kayaking, and hiking. The river is also home to several reservoirs and dams, including the Cannondale Reservoir and the River Road Dam. These structures are used to regulate the flow of water in the river and provide drinking water to nearby communities. In addition, the river supports a variety of agricultural activities, including dairy farms and crop production.