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Duluth-Superior Harbor, Minnesota and Wisconsin

Detroit District
Published Jan. 9, 2024

VIDEO | Duluth Canal Cam
Duluth-Superior Harbor, MN. & WI. is located at the extreme western end of Lake Superior. The cities of Duluth, MN, and Superior, WI, are on the north and south sides, respectively. The project was authorized by Rivers and Harbors Acts of June 3, 1896; March 2, 1907; May 28, 1908; July 27, 1916; March 2, 1919; January 21, 1927; July 30, 1930; August 30, 1930; July 16, 1952; and, October 4, 1961; and by the Water Resources Development Act of November 17, 1986. The existing project provides for the rebuilding of the canal piers at the Duluth Entry, and replacement or construction of channels within the harbor, St. Louis Bay, and St. Louis River. Channels vary in depth from 32 to 28 feet in the entrance; are 27 feet deep in the iron-ore route channels and 20 to 23 feet in inner channels. There are over 18 miles of maintained channels in the harbor, with widths varying from 250 feet to over 3700 feet in basins. The project has over 10,000 feet of structures including breakwaters, piers and revetments. There are about 110 docks or terminals serviced by the project. These include facilities for handling bulk products such as, iron ore (taconite), coal, limestone, petroleum, and grain and general cargo, including steel and scrap iron.

Project Map
Vessel Yard Project Map
Dredging Information
Functional Project Map
Duluth-Superior Harbor Maintenance Dredging and Beach Nourishment on Minnesota Point
Erie Pier Confined Disposal Facility Sediment Database

eHydro Website

2023 Duluth Superior Harbor PCS - Outer Harbor (Sheets 01-17)
2023 Duluth Superior Harbor PCS - Inner Harbor (Sheets 19-35)

2022 Duluth Superior Harbor PCS - Outer Harbor (Sheets 01-17)
2022 Duluth Superior Harbor PCS - Inner Harbor (Sheets 19-35)

2021 Duluth Superior Harbor PCS - Outer Harbor (Sheets 01-17)
2021 Duluth Superior Harbor PCS - Inner Harbor (Sheets 19-35)

2020 Duluth-Superior Harbor PCS

2019 PDF's 2019 DGN's
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