Great Lake (Lake Superior)-10% Earths Freshwater &icy cold

Camped just offshore on Lake Superior in Munising, Michigan in the UP (Upper Peninsula). Record hot day of 90F so Brenda went swimming in Lake Superior. Rare to swim in this Lake!. Large amount of shipwrecks in Lake Superior. Mostly preserved due to icy cold water. Munising has Pictured Rocks Lakeshore, & glass bottom boats to see shipwrecks through.

Info on Lake Superior...
Lake Superior is not only the largest of the Great Lakes; it is the largest body of fresh water on Earth. The lake is about 160 miles (257 kilometers) wide and about 350 miles (563 km) long. It has a surface area of 31,700 square miles (82,100 square km) and water volume of 2,900 cubic miles (12,100 cubic km). The shoreline measures 2,726 miles (4,385 km), according to the Environmental Protection Agency (EPA).
How deep is Lake Superior?
The deepest point in Lake Superior is 1,300 feet (400 meters) below the surface, making a complete freeze a rarity. Lake Superior boasts extremely clear water, with an average underwater visibility of 27 feet (8.2 m). It takes almost 200 years for the lake to refill with new water.

Lake Superior water temperature
The average water temperature is 40 F (4.4 C) — lower than the other Great Lakes, which are farther south. The water temperatures during the summer months average about 55 F, but surface temperatures reached a record 68.7 F (20.4 C) in August 2010 and are affected by the amount of surface ice during the previous winter.