Import and export tonnage helps identify the volume of cargo flowing through U.S. ports and the resulting vessel traffic on U.S. coastal waters. It also helps identify needs for intermodal truck and rail traffic. Most U.S. coastal ports handle both foreign and domestic cargoes.
A metric ton is equal to 2,204.6 pounds.
* Tonnage of U.S. waterborne imports and exports. Monthly, not seasonally adjusted.
The timeline shows the U.S. foreign waterborne freight from January 2009 to September 2010. In September 2010, U.S. waterborne freight had a weight of * million metric tons.
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Bureau of Transportation Statistics, & RITA. (July 1, 2011). U.S. import and export waterborne freight from January 2009 to September 2010 (in 1,000 metric tons)* [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 24, 2026, from /statistics/197941/us-import-and-export-waterborne-freight-since-2009/
Bureau of Transportation Statistics, und RITA. "U.S. import and export waterborne freight from January 2009 to September 2010 (in 1,000 metric tons)*." Chart. July 1, 2011. ÌÇÐÄÆƽâ°æ. Accessed July 24, 2026. /statistics/197941/us-import-and-export-waterborne-freight-since-2009/
Bureau of Transportation Statistics, RITA. (2011). U.S. import and export waterborne freight from January 2009 to September 2010 (in 1,000 metric tons)*. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 24, 2026. /statistics/197941/us-import-and-export-waterborne-freight-since-2009/
Bureau of Transportation Statistics, and RITA. "U.S. Import and Export Waterborne Freight from January 2009 to September 2010 (in 1,000 Metric Tons)*." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Jul 2011, /statistics/197941/us-import-and-export-waterborne-freight-since-2009/
Bureau of Transportation Statistics & RITA, U.S. import and export waterborne freight from January 2009 to September 2010 (in 1,000 metric tons)* ÌÇÐÄÆƽâ°æ, /statistics/197941/us-import-and-export-waterborne-freight-since-2009/ (last visited July 24, 2026)
U.S. import and export waterborne freight from January 2009 to September 2010 (in 1,000 metric tons)* [Graph], Bureau of Transportation Statistics, & RITA, July 1, 2011. [Online]. Available: /statistics/197941/us-import-and-export-waterborne-freight-since-2009/
