Merrimack River

Total streamflow across the Merrimack River was last observed at 21,310 cfs, and is expected to yield approximately 42,268 acre-ft of water today; about 59% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 36,379 cfs, with recent peaks last observed on 2023-12-20 when daily discharge volume was observed at 88,890 cfs.

Maximum discharge along the river is currently at the Merrimack River Bl Concord River At Lowell reporting a streamflow rate of 8,870 cfs. This is also the highest stage along the Merrimack River, with a gauge stage of 44.52 ft at this location. This river is monitored from 3 different streamgauging stations along the Merrimack River, the highest being situated at an altitude of 269 ft, the Merrimack River At Franklin Junction.

It was named by the Native Americans and played a significant role in the growth and development of the region. The river has a watershed area of 4,700 square miles and is fed by several tributaries, including the Pemigewasset and Souhegan Rivers. The Merrimack River has been an important source of hydroelectric power, with several reservoirs and dams built along its length. The largest of these is the Franklin Falls Dam, which creates a 2,500-acre reservoir. The Merrimack River offers various recreational opportunities, including boating, fishing, and hiking, while also serving as a vital resource for agriculture and industry.