Sudbury Dam Historic District

Sudbury Dam Historic District occupies about eight acres below the Sudbury Reservoir in Southborough, Massachusetts. Its centerpiece is an earth embankment 1,800 feet long, with a 300-foot stone spillway, rising roughly seventy feet above the valley floor. Around it are a granite gatehouse, a Weston Aqueduct head chamber built in 1903, a storehouse of 1900, two bridges, and relocated farm buildings used as a foreman's house and storage. A 1940 headhouse and two laboratory buildings are non-contributing. The district records the third phase of Boston's metropolitan water supply, when the Metropolitan Water Board of 1895 brought local supplies under regional control and finished the reservoir begun in 1893. The gatehouse was altered in 1915 to generate hydroelectric power, which continued into the early 1970s. The coursed gray granite, round-arched openings and tiled roofs give the earlier structures a consistent look. The district was found significant for its history and its design.