Total streamflow across the Contoocook River was last observed at 2,169 cfs, and is expected to yield approximately 4,302 acre-ft of water today; about 84% of normal. Average streamflow for this time of year is 2,576 cfs, with recent peaks last observed on 2023-07-11 when daily discharge volume was observed at 11,185 cfs.

Maximum discharge along the river is currently at the Contoocook R Bl Hopkinton Dam At W Hopkinton reporting a streamflow rate of 1,150 cfs. However, the streamgauge with the highest stage along the river is the Contoocook River Near Henniker with a gauge stage of 7.42 ft. This river is monitored from 3 different streamgauging stations along the Contoocook River, the highest being situated at an altitude of 751 ft, the Contoocook River At Peterborough.

The Contoocook River is a 71-mile-long river in New Hampshire, United States. The river flows from its source at the confluence of the Pemigewasset River and Winnipesaukee River in Franklin to its mouth at the Merrimack River in Penacook. The river is an important source of hydroelectric power, with several dams and reservoirs along its length. The largest of these is the Contoocook Hydro project, which includes three dams and three reservoirs. The river also supports a variety of recreational activities, including fishing, kayaking, and canoeing. The Contoocook River is also an important source of water for agriculture and industry in the region. The river has a rich history, with evidence of Native American settlements dating back over 10,000 years.