Millstone River - Commercial History

Commercial History

In earliest colonial times as land routes began to supplant sea shipping, commerce between the emerging centers New York and Philadelphia was carried by stage coach along a direct route from South Amboy to Bordentown. Much later that route became a railroad. A series of New Jersey towns still extant sprouted up along the stage coach route, including South Amboy, Sayreville, South River, Spotswood, Helmetta, Jamesburg, Cranbury, Hightstown, Windsor, Robbinsville, and Bordentown. In general, the stage coach took a bee-line route, straight as the crow flies, between the Raritan Bay at South Amboy and the Delaware River at Bordentown.

As the country grew and its economy began to thrive, large buoyant barges supported by water on canals emerged as much more suitable for heavy shipping. Unlike the stage coaches, however, routes for canals were obliged to follow the most level land — riverbeds. Hence the importance of the Millstone River which provides a north-south waterway through New Jersey connecting the two great cities of Philadelphia and New York.

The Millstone River is an important tributary of the Raritan River. The Raritan River empties into the Raritan Bay, a bay of the Atlantic Ocean. The Raritan Bay is contiguous to New York Harbor and separates the New York City Borough of Staten Island (Richmond County) from Central New Jersey along with the Arthur Kill a more narrow channel of water between Staten Island and New Jersey.

As the Raritan River flows eastward towards Raritan Bay, it joins the Millstone River flowing north in the vicinity of Bound Brook, New Jersey. The Millstone River traces an arc through several New Jersey Counties, originating in Monmouth County and flowing more-or-less west through Mercer County, then northwest through Somerset County, then northward towards Bound Brook.