New York City Hudson River separates the city from the U.S. state of New Jersey. The East River—a tidal strait—flows from Long Island Sound and separates the Bronx and Manhattan from Long Island. The Harlem River, another tidal strait between the East and Hudson Rivers, separates most of Manhattan from the Bronx. The Bronx River, which flows through the Bronx and Westchester County, is the only entirely fresh water river in the city. The city's land has been altered substantially by human intervention, with considerable land reclamation along the waterfronts since Dutch colonial times; reclamation is most prominent in Lower Manhattan, with developments
New Jersey the state. The Hudson-Bergen Light Rail connects Bayonne to North Bergen, through Hoboken and Jersey City. The Newark Light Rail is partially underground, and connects downtown Newark with other parts of the city. The River Line connects Trenton and Camden. The PATH is a rapid transit system consisting of four lines operated by the Port Authority of New York and New Jersey. It links Hoboken, Jersey City, Harrison and Newark with New York City. The PATCO Speedline is a rapid transit system that links Camden County to Philadelphia. Both the PATCO and the PATH are two of only six rapid