The large freshwater lake located between the U.S. and Canada is Lake Superior. It is the largest of the Great Lakes by surface area and is known for its vast size and depth. Stretching over 31,700 square miles, Lake Superior is a critical part of the Great Lakes system and plays a vital role in regional ecology and economy. The lake is surrounded by numerous state and provincial parks which showcase its natural beauty, thus attracting outdoor enthusiasts and promoting conservation efforts in the area.