connecting Kingston, New Jersey to Princeton, New Jersey County Route 518 connecting Griggstown, New Jersey to Rocky Hill, New Jersey Griggstown Causeway connecting Griggstown, New Jersey to Hillsborough, New Jersey Blackwell Mills Amwell Avenue Interstate 287 See also List of rivers of New Jersey References External links U.S. Geological Survey: NJ stream gaging stations Rivers of Monmouth County, New Jersey Rivers of Mercer County, New Jersey Rivers of Middlesex County, New Jersey Tributaries of the Raritan River Rivers of Somerset County, New Jersey Rivers of New Jersey Delaware and Raritan Canal