New York Harbor. New York Harbor is a bay that covers all of the Upper Bay and an extremely small portion of the Lower Bay. It is at the mouth of the Hudson River where it empties into New York/New Jersey Bight near the East River tidal estuary, and then into the Atlantic Ocean on the East Coast of the United States. New York Harbor is also known as Upper New York Bay, which is enclosed by the New York City boroughs of Manhattan, Brooklyn, and Staten Island and the Hudson County, New Jersey municipalities of Jersey City and Bayonne. The name may also refer to the entirety of New York Bay including Lower New York Bay. The harbor is fed by the waters of the Hudson River, as well as the Gowanus Canal. It is connected to Lower New York Bay by the Narrows, to Newark Bay by the Kill Van Kull, and to Long Island Sound by the East River, which, despite its name, is actually a tidal strait. It provides the main passage for the waters of the Hudson River as it empties through the Narrows. The channel of the Hudson as it passes through the harbor is called the Anchorage Channel and is approximately 50 feet deep in the midpoint of the harbor. A project to replace two water mains between Brooklyn and Staten Island, which will eventually allow for dredging of the channel to nearly 100 feet, was begun in April 2012. The harbor contains several islands including Governors Island, near the mouth of the East River, as well Ellis Island, Liberty Island, and Robbins Reef which are supported by a large underwater reef on the New Jersey side of the harbor. The reef was historically one of the largest oyster beds in the world and provided a staple for the diet of all classes of citizens both locally and regionally until the end of the 19th century, when the beds succumbed to pollution. Historically, it has played an extremely important role in the commerce of the New York metropolitan area. The Statue of Liberty National Monument recalls the immigrant experience during the late 19th and early 20th century. Since the 1950s, container ship traffic has been primarily routed through the Kill Van Kull to Port Newark-Elizabeth Marine Terminal, where it is consolidated for easier automated transfer to land conveyance. As a consequence, the waterfront industries of the Harbor experienced a decline leading to diverse plans for revitalization, though important maritime uses remain at Red Hook, Port Jersey, MOTBY, Constable Hook, and parts of the Staten Island shore. Liberty State Park opened in 1976. In recent years, it has become a popular site for recreation sailing and kayaking. The harbor is traversed by the Staten Island Ferry, which runs between Whitehall Street at the southernmost tip of Manhattan near Battery Park and St. George Ferry Terminal on Richmond Terrace in Staten Island near Richmond County Borough Hall and Richmond County Supreme Court.