Notes:

TEU = twenty-foot equivalent unit.

Domestic includes both inbound and outbound cargo shipped between U.S. ports. For example, TEUs shipped between Los Angeles, Long
Beach, Honolulu, and other U.S. ports.

Description:

This map is included in the Transportation Statistics Annual Report 2020 publication. 

Source:

U.S. Department of Transportation, Bureau of Transportation Statistics, based on 2018 data provided by the U.S. Army Corps of 
Engineers, Waterborne Commerce Statistics Center, special tabulation, as of November 2019.