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

The Passumpsic River is a 22-mile-long tributary of the Connecticut River in Vermont, USA. It was historically used by the Nulhegan Abenaki tribe for fishing and hunting. The river is fed by several small streams and flows through the towns of St. Johnsbury, Barnet, and Passumpsic. The hydrology of the river has been altered by several dams and reservoirs, including the Moore Dam and the Wilder Dam. These structures provide hydroelectric power and flood control. The river is also used for recreation, such as fishing and kayaking, and supports agriculture in the surrounding areas. The Passumpsic River is an important part of Vermont's natural heritage and continues to play a vital role in the state's economy and culture.