Top 25 Water Ports by Tonnage: 2010 Map

U.S. map showing that most tonnage through ports is concentrated along the Gulf Coast

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Source

U.S. Army Corps of Engineers, 2010 Waterborne Commerce of the United States, Part 5, National Summaries (New Orleans, LA: 2010), table 5-2, available at www.ndc.iwr.usace.army.mil//wcsc/wcsc.htm as of June 18, 2012.

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