Geography of New York City the coast of the Northeastern United States at the mouth of the Hudson River in southeastern New York state. It is located in the New York–New Jersey Harbor Estuary, the centerpiece of which is the New York Harbor, whose deep waters and sheltered bays helped the city grow in significance as a trading city. Much of New York is built on the three islands of Manhattan, Staten Island, and western Long Island, making land scarce and encouraging a high population density. The Hudson River flows from the Hudson Valley into New York Bay, becoming a tidal estuary that separates the
New York – New Jersey Line War border with New York, which was also located on this branch. But where exactly was this elusive branch of the Delaware River? The East New Jersey Board of Proprietors would lead the effort to establish the location of the northern station point because of the importance of this question in establishing title over much of their territory. Without a firm border, how could grants be made with firm titles; more importantly, without firm titles, how could new business and communities be established? The first attempt to establish the location of the northern border of New Jersey was made in 1684.