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The Manistique River supports several species of sport fish, waterfowl, and mammals. Restoration of the Manistique River AOC is important for the ecological, economic, and human health of the region.

Combined sewer overflows and bacterial contamination.

Organic waste (sawdust and woodchips) from sawmill and paper mill operations.Historical polychlorinated biphenyl (PCB) and heavy metal contamination from industry.The Manistique River was designated as an AOC due to: As a result, sawmills and paper manufacturing facilities developed on the Manistique River have had negative environmental effects. Most notably, the harbor has been a significant lumber port due to Manistique’s location at the mouth of a largely forested watershed. The Manistique Harbor is a deep-draft harbor that has supported numerous commercial and recreational activities since the late 1800s. The AOC consists of the last 1.7 miles of the river, from the dam in Manistique downriver to the mouth of the harbor at Lake Michigan.

The river flows southwest through the county and discharges into Lake Michigan at the city of Manistique. The Manistique River is located in Schoolcraft County in Michigan's central Upper Peninsula. The Manistique River in Michigan was designated as an Area of Concern (AOC) under the 1987 Great Lakes Water Quality Agreement. Final restoration stage begins in the Manistique AOC.Great Lakes Restoration Initiative (GLRI.

Corps engineers dredge how many great lakes aocs