This dataset summarizes the annual internal barge traffic on the U.S. waterways system by using the Waterborne Commerce Statistics Data. Tonnages are provided by commodity, month, and year.
The dataset is updated once a year.
Definition of the "internal" traffic: Vessel movements (origin and destination) which take place solely on inland waterways. An inland waterway is one geographically located within the boundaries of the contiguous 48 states or within the boundaries of the State of Alaska.
The term "internal traffic" is also applied to these vessel movements: those which involve carriage on both inland waterways and the Great Lakes; those occurring between offshore areas and inland waterways (e.g., oil rig supplies and fish); and those taking place within Delaware Bay, Chesapeake Bay, Puget Sound, and the San Francisco Bay, which are considered internal bodies of water rather than arms of the ocean.