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Monthly Indicators

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Internal U.S. Waterway Monthly Tonnage Indicators
Trends in commodity tonnage flows

Commodity Tonnage at Key Locks:
Comments or Questions Contact:
NDC
U.S. Army Corps of Engineers
Institute for Water Resources
Navigation Data Center
7701 Telegraph Rd
Alexandria, VA 22315
Voice:(703) 428-9061
Fax:(703) 428-6047