Waterway Network Link Commodity Data
2009 Commodity movements (in tons) across each National Waterway Network (NWN) link.
The National Waterway Network 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).
Tonnage is summarized for each link by commodity and direction (up bound and down bound). The commodities include: Coal |
Petroleum Products | Chemicals | Crude Materials | Manufactured Goods | Farm Products | Machinery | Waste | Unknow
Source of Data
Domestic Data Source: Companies operating commercial vessels on U.S. navigable waters.
Foreign Data Source: U.S. Bureau of the Census, who processes U.S. customs import and export data.
These data are then routed from origin to destination so that through traffic for waterways and links can be computed.
U.S. Army Corps of Engineers, Navigation Data Center, Waterborne Commerce Statistics Center.
Geographic Coverage of Data: U.S. Inland and Coastal Waterways
Update Frequency: Continuously reported by the companies
Data quality/accuracy: WCSC, the U.S. Bureau of the Census, and U.S. Customs perform multiple edits and data checks to
ensure accurate data.
Number of Records: 3,102
298,539 bytes (linktons.txt)
337,803 bytes (linktons.xls)
File Format: ASCII Comma Delimited, Spreadsheet, and dBase
Maximum Characters per Record: 210
Media: CD, disk, tape, hardcopy
Contact for Additional Information:
Waterborne Commerce Statistics Center
PO BOX 61280
New Orleans, LA 70161-1280
Point of Contact: NDC
Tel. (504) 862-1426 or (504) 862-1441
Fax. (504) 862-1423