Saginaw Bay separates its "Thumb" region, and the Straits of Mackinac separate its Upper and Lower portions.
The Menominee river and the St. Clair river form boundaries around this state, two principle rivers of which are the Au Sable and Cheboygan. The Porcupine Mountains contains the Lake of the Clouds in this state, which sees its East and Middle branches of the Escanaba river join in the town of Gwinn. Saginaw Bay separates its "Thumb" region, and the Straits of Mackinac separate its Upper and Lower portions. It is the only state consisting of two peninsulas and bounded by four of the five Great Lakes. For 10 points, name this state whose cities include Grand Rapids, East Lansing, Flint, and Detroit.
The Menominee river and the St. Clair river form boundaries around this state, two principle rivers of which are the Au Sable and Cheboygan.
Michigan