Sewall's Falls Hydroelectric Facility, East end of Second Street spanning Merrimack River, Concord, Merrimack County, NH
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East end of Second Street spanning Merrimack River, Concord, NH
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Documentation compiled after 1968.
Survey number HAER NH-20
Unprocessed field note material exists for this structure (N488).
Significance: The dam in Concord, New Hampshire, was one of the longest timber crib dams in the eastern U.S. On September 29, 1893, this became the second commercial supplier of three-phase electric current in the U.S. The dam remained intact until 1984, at which time the mid-section washed away.
Hydroelectric Power Plants
Historic American Engineering Record (Library of Congress)
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