Bronx Community Board 1 is a local government unit of the city of New York, encompassing the neighborhoods of Mott Haven, Melrose, and Port Morris in the borough of the Bronx. It is delimited by the East River, East 149th Street, and Prospect Avenue on the east, East 161st Street (from Prospect Avenue to Third Avenue), East 159th Street (from Third Avenue to Park Avenue), and East 149th Street (from Park Avenue to the Harlem River) on the north, and the Harlem River and Bronx Kill on the west and south.