North Bergen, New Jersey left North Bergen roughly shaped as an inverted "L". Its northern section stretches east-west and is south of the Bergen County communities Cliffside Park, Edgewater, Fairview and Ridgefield. To the east, the Hudson River creates the shared border with the borough of Manhattan in New York City. It shares a border with Carlstadt in the Hackensack River. Its north-south section lies between Secaucus to the west and to the east Guttenberg, West New York and Union City, with which it meets Jersey City at a single point at its southern end. With the separation of Secaucus in 1900, North Bergen
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