|Lakes are areas of water within depressed ground, isolated from the sea. They occur near the courses of rivers and in low-lying land areas, close to the sea. Lakes are normally of freshwater although there are some good examples of salt lakes within the world including the Dead Sea and the Great Salt Lake in Utah. |
Crater lakes are formed atop the basins of extinct volcanoes. Some lakes are glacial and lie at high elevations. The great lakes of America and the Lochs of Scotland were formed by glacial activity.
The largest of the world's lakes are the Caspian Sea, Lake Superior, Victoria, Huron, Michigan, the Aral Sea, Lake Tanganyika, Baikal, Great Bear and Nyasa. Lake Superior's area totals 82,378 sq km and measures 25km wide and 616km long with a shoreline measuring 2800km. Lake Superior is over 400m deep in places and it is volume contains 17,550 cu km of water. It is bordered in the north by Canada and in the south by the USA.
Loch Ness in Scotland is interesting as it is home to the legend of the Loch Ness Monster. Apparently the monster has had several sightings and many are backed up by photographic evidence.