Lake Superior is the largest of the Great Lakes by surface area.

Lake Superior, the largest freshwater lake in the world by surface area, spans over 31,700 square miles. It is located on the border between the United States and Canada, and its vast size makes it significantly larger than the other Great Lakes. While other lakes like Lake Michigan are quite large, Lake Superior holds the record not only for surface area but also for volume, making it the deepest and most expansive of all the Great Lakes. Its massive size plays a key role in the region's climate and ecosystem.