Lake Agassiz was a 700-mile long by 200-mile wide lake that covered much of northern Minnesota approximately 10,000 years ago during the last two phases of the Wisconsin Glacial Age. The lake drained to the north into Hudson Bay when the Laurentide Ice Sheet melted leaving behind Minnesota's famous ``10,000 lakes.''

Adapted from the Encyclopaedia Britannica, ©1995.

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