National Waterway Network (NWN)
The National Waterway Network (NWN) is a geographic database of navigable waterways and channels in and around the United States, for analytical studies of navigation performance, for compiling commodity flow statistics, and for mapping purposes. The NWN is comprised of a link database and a node database. Links are line strings, which consist of beginning and end points (nodes) with intermediate vertices (shape points). Links represent either actual shipping lanes (i.e., channels, Intracoastal Waterways, sealanes, rivers) or serve as representative paths in open water (where no defined shipping paths exist). Nodes may represent physical entities such as river confluence's, ports/facilities, and intermodal terminals, USACE nodes, or may be inserted for analytical purposes (i.e., to facilitate routing).
Linktons
Tonnage is summarized for each link in the National Waterway Network by commodity and direction (up bound and down bound). The commodities include: Coal | Petroleum Products | Chemicals | Crude Materials | Manufactured Goods | Farm Products | Machinery | Waste | Unknown
Principal Ports List
The Principal Port file contains USACE port codes, geographic locations(longitude, latitude), names, and commodity tonnage summaries (total tons, domestic, foreign, imports and exports) for Principal USACE Ports.