Lake Minong

Lake Minong
Glacial Lake Minong
Lake Minong
Location	North America
Group	Great Lakes
Coordinates	47°42′N 87°30′W / 47.7°N 87.5°W / 47.7; -87.5
Lake type	former lake
Etymology	Historic Name of Isle Royale
Primary inflows	From Lake Agassiz through the Nipigon River
Primary outflows	Grand River valley in Michigan
Basin countries	Canada United States
First flooded	10,000 years before present
Residence time	1,500 years in existence
Surface elevation	450 ft (137 m)
References	Glacial and Postglacial Geologic History of Isle Royale National Park, Michigan; N. King Huber; The Geology of Isle Royale National Park, Michigan; Geological Survey Professional Paper 754-A; United States Government Printing Office, Washington, D.C.; 1973.

Lake Minong was a proglacial lake that formed in the Lake Superior basin during the Wisconsin glaciation around 10,000 B.P. This was the last glacial advance that entered Michigan and covered only part of the upper peninsula. Lake Minong occurred in the eastern corner of the Lake Superior basin while Lake Duluth was in the western end. The lakes became separated when the glacier reached the upper peninsula. Lake Minong expanded to the north as the ice retreated after 9,800 B.P. When the ice retreated from the Keweenaw Peninsula, Lake Duluth merged into Lake Minong.^[1]