Minnesota Sea Grant Helps Sustain Commercial Operations in Major Great Lakes Port

May 4, 2022

Minnesota and Wisconsin Sea Grant programs developed innovative ways to recycle and reuse dredge material. Photo credit: Chris J. Benson

Over 100,000 cubic yards of dredge material are moved each year within the Duluth-Superior Harbor to maintain commercial operations in the Great Lakes. The Duluth-Superior Contained Disposal Facility (CDF) is currently at capacity and a new facility would cost over $35 million.

Minnesota Sea Grant, in conjunction with Wisconsin Sea Grant and the Harbor Technical Advisory Committee, developed a strategy to partner with state agencies responsible for permitting and using dredge materials. Efforts to re-use clean dredge material in other projects around the state have eliminated the need for a new CDF and saves the state and private port interests millions of dollars.

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