1985 Map of Clear Lake

About this map

The glacial landscape of the Coteau des Prairies defines this borderland between eastern South Dakota and western Minnesota. High points like Buffalo Hill and Antelope Hills overlook a prairie dotted with dozens of water bodies, including Lake Alice, Fish Lake, and the namesake Clear Lake. The region’s hydrology is notably split, with the Big Sioux River flowing south while the Lac qui Parle River and Yellow Medicine River drain toward the northeast.