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On the shores of Gitche Gumee. Westward by the big-sea-water… Song of Hiawatha by Longfellow

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On the shores of Gitche Gumee. Westward by the big-sea-water… Song of Hiawatha by Longfellow. The surface area of Lake Superior is 31,700 square miles. That is Greater than the combined areas of Vermont, Massachusetts, Rhode Island, Connecticut and New Hampshire.

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Presentation Transcript
slide1

On the shores of Gitche Gumee.

Westward by the big-sea-water…

Song of Hiawatha by Longfellow

slide2

The surface area of Lake Superior is 31,700 square miles. That is

Greater than the combined areas of Vermont, Massachusetts, Rhode

Island, Connecticut and New Hampshire.

slide4

Some of the world’s oldest rocks, about 2.7 billion years of age,

can be found on the Ontario shore of Lake Superior.

slide5

Lake Superior contains 3,000,000,000,000,000 (3 quadrillion) gallons

of water – enough to flood all of North America and South America

with a foot of water.

slide7

The underwater visibility of Lake Superior is 27 feet, making it easily

the cleanest and clearest of the Great Lakes. In some places,

underwater visibility reaches 100 feet. It has been described as

The most oligotrophic lake in the world.

slide9

Lake Superior is one of the earth’s youngest major features, at only about

10,000 years of age. By comparison, the earth’s second largest lake

(by surface area) is Lake Baikal in Russia and it is 25 million years old.

slide10

The shoreline of Lake Superior, if straightened out,

would stretch from Duluth MN, to the Bahama Islands.

slide11

When European explorers visited Lake Superior in the

1600s, they reported giant sturgeons (up to nine feet in

length) and pike of greater than seven feet in length.

slide12

Wharf at the Apostle Islands

Lake Superior rests mostly on Precambrian rock at the

Southern edge of the Canadian shield, the largest

exposure of such bedrock on the planet.

slide13

In the summer, the sun sets more than 35 minutes later

on the western shore of Lake Superior than at its south-

eastern edge.

slide14

The average annual water temperature of Lake Superior is 40 degrees.

It rarely freezes over completely and when it does, it only lasts for a

few hours. The last complete freeze occurred in 1979.

aurora borealis
Aurora Borealis

OVER THE LAKE

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