30 Jul 2025

Corps of Engineers to start dredging Manistique Harbor

The U.S. Army Corps of Engineers, Detroit District will start a maintenance dredging project at Manistique Harbor as early as August 7. The $1.865 million project will remove 92,500 cubic yards of sediment and place it along the west breakwater beach area below the ordinary high-water mark and west of the breakwater extending 7,000 feet along the nearshore lake bottom from four to ten feet deep. “The Corps of Engineers annually performs hydrographic condition surveys to assess shoaling in federal harbors and navigation channels,” said Corps of Engineers St. Marys River Section Chief Justin Proulx. “Those assessments have demonstrated significant shoaling in Manistique Harbor. Maintaining a 12 foot depth in the harbor is essential for safe commercial and recreational users, and the Corps of Engineers looks forward to dredging and reutilizing the shoaled material to nourish high erosion areas of the nearby shoreline.”

22 Jan 2021

Corps of Engineers cleaning debris inadvertently placed on Minnesota Point

DETROIT - The U.S. Army Corps of Engineers (USACE) is coordinating cleanup of aluminum cans and can fragments inadvertently deposited on Minnesota Point during dredge material placement in the fall of 2020. USACE placed 49,000 cubic yards of beneficial use dredge material on Minnesota Point at the city’s request during annual Duluth-Superior Harbor maintenance dredging operations in August and September. In 2019, 53,000 cubic yards of dredge material was placed on the south end of Minnesota Point to minimize erosion due to high water and protect old growth trees. The city requested additional material in 2020 to help restore the eroded beach and dune habitat. The debris likely resulted from dredge equipment encountering an area containing trash discarded in the harbor in the 1970s based on aluminum can vintage. About 27,000 cubic yards of dredge material came from the area USACE officials believe contained the debris.

16 Sep 2020

Corps of Engineers removing contaminated Howards Bay sediment

The U.S. Army Corps of Engineers will remove more than 130,000 cubic yards of material, including contaminated sediment and debris, from Howards Bay in Superior, Wisconsin beginning this fall. The removal is part of a maintenance dredging contract the Corps’ Detroit District awarded to La Crosse, Wisconsin-based, J.F. Brennan Company, Inc. “Dredging in Howards Bay is a voluntary public-private partnership formed under the Great Lakes Legacy Act to dredge contaminated sediment from Howards Bay,” said Project Manager Steve Rumple. “Cleanup of sediment at Howards Bay is a necessary action to remove beneficial use impairments and to eventually delist the St. Louis River Area of Concern.”

27 Jul 2020

Wisconsin company to dredge Duluth-Superior Harbor

The U.S. Army Corps of Engineers, Detroit District, awarded a contract for dredging at Duluth-Superior Harbor in western Lake Superior on the Minnesota-Wisconsin border. The more than $2 million contract was awarded to Roen Salvage Co., from Sturgeon Bay, Wisconsin. The contract (award number W911XK20C0014) is to dredge approximately 120,000 cubic yards of material from the harbor. Approximately 52,000 cubic yards of the mostly sandy material will be placed along North Minnesota Point shoreline and approximately 68,000 cubic yards of material will be placed at Interstate Island. Dredging will begin in August and will be complete by mid-November.

27 Jul 2020

Wisconsin company to dredge Duluth-Superior Harbor

The U.S. Army Corps of Engineers, Detroit District, awarded a contract for dredging at Duluth-Superior Harbor in western Lake Superior on the Minnesota-Wisconsin border. The more than $2 million contract was awarded to Roen Salvage Co., from Sturgeon Bay, Wisconsin. The contract (award number W911XK20C0014) is to dredge approximately 120,000 cubic yards of material from the harbor. Approximately 52,000 cubic yards of the mostly sandy material will be placed along North Minnesota Point shoreline and approximately 68,000 cubic yards of material will be placed at Interstate Island. Dredging will begin in August and will be complete by mid-November.

23 Jul 2020

Corps’ Detroit office awards dredging contract for Holland Harbor

The U.S. Army Corps of Engineers, Detroit District, recently awarded a contract for dredging in western Michigan, on Lake Michigan. The Corps awarded a maintenance dredging contract for Holland (Outer) Harbor in June to Luedtke Engineering Company from Frankfort, Michigan. The contract (award number W911 XK20C0012) was for more than $455,000 to dredge almost 49,000 cubic yards of material from Holland (Outer) Harbor. Material from the site will be placed near the shoreline in the most landward eight foot depth starting north of the breakwater. “This important work will keep the shipping channel open as part of the Great Lakes Navigation System as an economically and environmentally viable means of transporting commodities,” said Bob Jarema, project manager.