Southern Great Lakes forests Southern Great Lakes forests The Southern Great Lakes lowland forests is a temperate broadleaf and mixed forest ecoregion of North America, as defined by the World Wildlife Fund. It lies mostly in the central northeastern United States and extends into southeast central Canada. This area includes the southern half of Michigan's Lower Peninsula, and much of Indiana and Ohio. It also extends through the southern half of Southwest Ontario from Windsor to Toronto and into Pennsylvania and New York on the southern rims of lakes Erie and Ontario. This region is characterized by warm-to-hot summers and mild-to-cold, snowy winters. This
Nipissing Great Lakes both Lake Erie and Niagara Falls would lack the volume of water needed to cut the channel through the Niagara limestone cap rock. Lake Erie was a nonglacial lake in this period. The third stage of nonglacial development ended the Lake Algonquin. A fourth stage was initiated when the upper lakes entered the Nipissing Great Lakes stage and that volume of water was diverted through the outlet at North Bay, Ontario. At this low stage, Lake Erie was to lower than present lake level and which lasted throughout the time of the Nipissing Great Lakes. The Lake Algonquin period of