Merrimack River (redirected from Merrimack River (United States))

Merrimack River

River, northeastern U.S. Rising in the White Mountains of central New Hampshire, it flows south into Massachusetts, then turns northeast and empties into the Atlantic Ocean after a total course of 110 mi (177 km). The main cities along the river include Concord, Manchester, and Nashua, N.H., and Lowell, Lawrence, and Haverhill, Mass.; they used the river to power their textile mills in the 19th century.