midwestern states State of Michigan A Midwestern state of the United States of America. Michigan consists of two peninsulas that lie between 82deg30minW to about 90deg30minW longitude, and are separated by the Straits of Mackinac. With the exception of two small areas that are drained by the Mississippi River by way of the Wisconsin River in the Upper Peninsula and by way of the Kankakee-Illinois River in the Lower Peninsula, Michigan is drained by the Great Lakes-Saint Lawrence watershed. The Great Lakes that border Michigan from east to west are Lake Erie, Lake Huron, Lake Michigan and Lake Superior. The state is bounded on the south by the states of Ohio and Indiana, sharing land and water boundaries with both. LanguaL curation note: US FDA 1995 Code: US26 michigan State of Michigan A Midwestern state of the United States of America. Michigan consists of two peninsulas that lie between 82deg30minW to about 90deg30minW longitude, and are separated by the Straits of Mackinac. With the exception of two small areas that are drained by the Mississippi River by way of the Wisconsin River in the Upper Peninsula and by way of the Kankakee-Illinois River in the Lower Peninsula, Michigan is drained by the Great Lakes-Saint Lawrence watershed. The Great Lakes that border Michigan from east to west are Lake Erie, Lake Huron, Lake Michigan and Lake Superior. The state is bounded on the south by the states of Ohio and Indiana, sharing land and water boundaries with both. LanguaL curation note: US FDA 1995 Code: US26 michigan