New York City worldwide. New York City is situated in the Northeastern United States, in southeastern New York State, approximately halfway between Washington, D.C. and Boston. The location at the mouth of the Hudson River, which feeds into a naturally sheltered harbor and then into the Atlantic Ocean, has helped the city grow in significance as a trading port. Most of New York City is built on the three islands of Long Island, Manhattan, and Staten Island. The Hudson River flows through the Hudson Valley into New York Bay. Between New York City and Troy, New York, the river is an estuary. The
Ramapo River at the location where barrels of toxic chemicals were buried. At Harriman, the river then turns south into western Rockland County, where it flows through the hamlet and town of Ramapo, New York, then into northern Bergen County, New Jersey. In New Jersey, it flows SSW, along the east side of the ridge of the Ramapo Mountains. The river flows into Potash Lake in Oakland and from there, into Pompton Lake in Pompton Lakes. The river that flows out of Pompton Lake, forming the border between Pompton Lakes and Wayne. The Ramapo forms a confluence with the Pequannock River along