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Big Stone Lake

Big Stone Lake, narrow lake, c.25 mi (40 km) long, on the Minn.–S.Dak. line. Located in the outlet channel of glacial Lake Agassiz , it is the source of the Minnesota River and serves as a storage reservoir for the Minnesota Valley.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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