Western Great Lakes forests Western Great Lakes forests The Western Great Lakes forests is a terrestrial ecoregion as defined by the World Wildlife Fund. It is within the Temperate Broadleaf and Mixed Forests ecozone of North America, in the United States' states of Michigan, Wisconsin and Minnesota, and the Canadian provinces of Ontario and Manitoba. The Western Great Lakes forests, in large part, lie in the northwestern Great Lakes Basin near the shores of Lake Huron, Lake Michigan and Lake Superior, including the entire Upper peninsula of Michigan and large parts of Northern Wisconsin, around Lake Superior into much of northern Minnesota and a
Great Lakes Areas of Concern the contiguous United States' Pacific and Atlantic coastlines combined. The lakes are a system of transport and shipping, as well as a place of recreation. An Area of Concern must have at least "one beneficial use impairment which means that it has undergone a change in its chemical, physical, or biological integrity of a water body." These include: The Great Lakes Water Quality Agreement between the United States and Canada more specifically defines Areas of Concern as "geographic areas that fail to meet the general or specific objectives of the agreement where such failure has caused or is likely to