Aerial view of New Haven Harbor, New Haven, Conn. New

Aerial view of New Haven Harbor, New Haven, Conn. New Haven Harbor, a major commercial harbor in Connecticut, extends for five miles from Long Island Sound to New Haven. West Haven and East Haven lie on either side of the outer harbor. Principal rivers flowing into the harbor are the Quinnipiac River to the northeast, the Mill River to the north, and the West River to the west. The Corps first began work on New Haven Harbor in 1852.