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Welcome to the Port of Duluth-Superior, one of the largest inland seaports in the world.

At the far westerly tip of Lake Superior near the geographic center of the North American continent, this is where the Great Lakes-St. Lawrence Seaway navigation system ends---and begins.

It's a place where the St. Louis River---exhausted from its last plunging run through the pine-lined cliffs and rocks of Jay Cooke State Park---regains its composure and fans out to create a huge natural harbor. Sheltered from Lake Superior by a narrow, sandy peninsula reaching nine miles from Duluth's steep hills to Superior's table-top flatness, the harbor rim weaves in and out of 49 miles of shoreline embracing 19 square miles of fresh water.

The port that evolved within this common harbor is shared by two states, Minnesota and Wisconsin. With iron ore docks, coal docks, grain elevators and specialized cargo facilities lining the industrial waterfronts of both Duluth and Superior, the port serves shippers and receivers throughout the U.S. Midwest and the Great Plains. It also has some customers in Canada's western provinces.

In the maritime industry as well as for virtually all federal government purposes, the port is known as Duluth-Superior. Consequently, except for land development and related financing activities, the Duluth Seaway Port Authority promotes the port's collective interests. Facility information, tonnage statistics and other general data found in this site reflect that reality.

And it is indeed a big port, averaging about 40 million metric tons of cargo in a navigation season that usually begins in late March and continues until mid-January. Duluth-Superior is by far the largest port on the Great Lakes and is one of the premier bulk cargo ports in North America.

This site can only provide a glimpse of the port's total activities and opportunities. The Duluth Seaway Port Authority sincerely appreciates your interest and invites your inquiries.