May 2, 2010

LAKE SUPERIOR FACTS

· Lake Superior contains ten percent of all the fresh water on the planet Earth...

· It covers 82,000 square kilometers or 31,700 square miles.

· The average depth is 147 meters or 483 feet.

· There have been about 350 shipwrecks recorded in Lake Superior.

· Lake Superior is, by surface area, the largest lake in the world.

A Jesuit priest in 1668 named it Lac Tracy, but that name was never officially adopted.

· It contains as much water as all the other Great Lakes combined, plus three extra Lake Eries.

· There is a small outflow from the lake at St. Marys River (Sault Ste Marie) into Lake Huron. but it takes almost two centuries for the water to be completely replaced.

· There is enough water in Lake Superior to cover all of North and South America with water a foot deep.

· Lake Superior was formed during the last glacial retreat, making it one of the earth's youngest ajor features at only about 10,000 years old.

· The deepest point in the lake is 405 meters or 1,333 feet.

· There are 78 different species of fish that call the big lake home.

· The maximum wave ever recorded on Lake Superior was 9.45 meters or 31 feet high.

· If you stretched the shoreline of Lake Superior out to a straight line, it would be long enough to reach from Duluth to the Bahamas.

· Over 300 streams and rivers empty into Lake Superior with the largest source being the Nipigon River.

· The average underwater visibility of Lake Superior is about 8 meters or 27 feet, making it the cleanest and clearest of the Great Lakes. Underwater visibility in some spots reaches 30 meters.

· In the summer, the sun sets more than 35 minutes later on the western shore of Lake Superior than at its southeastern edge.

· Some of the world's oldest rocks, formed about 2.7 billion years ago, can be found on the Ontario shore of Lake Superior.

· It very rarely freezes over completely, and then usually just for a few hours. Complete freezing occurred in 1962, 1979, 2003 and 2009.