The term 'New Jersey River' refers to four rivers in the state of New Jersey: the Raritan, Hackensack, Passaic, and DELAWARE. The Raritan is a river that flows through central New Jersey and empties into the Raritan Bay. The Hackensack is a river that runs through northern New Jersey and is a major tributary of the Hudson River. The Passaic is a river that runs through northern New Jersey and is a major tributary of the Newark Bay. Finally, the DELAWARE is a river that forms part of the border between New Jersey and Pennsylvania and empties into the DELAWARE Bay.