5. Lake Michigan
Michigan ranks as the third-largest of the Great Lakes and is the only one entirely in the U.S. At 307 miles long and 118 miles across, Michigan’s surface area covers more than 22,000 square miles. It’s connected to Lake Huron through the Straits of Mackinac, so many scientists consider it one lake.
The shoreline on the northern part of the lake is largely uninhabited. But it’s packed along the southern and western shores, from Gary, Indiana, (population: about 78,000), through Chicago (2.7 million) Milwaukee (599,000) and up to Green Bay (104,000). There are several fisheries on the lake, with trout, salmon and walleye being the big catches.