how big is lake michigan

Lake Michigan is approximately 307 miles (494 km) long and 118 miles (190 km) wide at its widest point. It has a surface area of about 22,300 square miles (57,753 square kilometers), making it the largest lake located entirely within the United States and the fifth largest lake in the world by surface area. The average depth is around 279 feet (85 meters), with a maximum depth of 923 feet (281 meters). Its volume is about 1,180 cubic miles (4,918 cubic kilometers) of water, and it has a shoreline roughly 1,640 miles (2,639 kilometers) long.