What are the biggest lakes in North America?
The lake, mostly concentrated in the Northern half of North America within the boundaries of the Canadian shield and its boundary. A large group of large lake basins, formed in situ tectonic depressions, then wymaganych and in-depth glacier, located on the edge of the Canadian shield. This Huge bear lake, Great Slave, Athabasca, Winnipeg, and Winnipegosis, Forest, Nipigon and, in the end, a group of Majestic lakes . The large number of lakes resembling in their own lakes of Finland and Sweden, is located in the Laurentian mountains. In the Cordillera mountain many lakes, glacial and volcanic origin.
Lakes to Majestic huge 5 includes: Upper, Huron, Michigan, Erie and Ontario . They are associated with a little medium-sized lakes. Important of them are: St. Marys, St. Clair, Nipigon. The lakes belong to the basin of the Atlantic ocean. Stoke on the St. Lawrence river. On the formation of lake basins most influenced by tectonic processes. The weight of the glacier pushed the earth’s crust, and once the glacier melted, began leisurely working process: post-glacial rise (eng. en: Post-glacial rebound ), which is also very conspicuous in the area of the Gulf of Bothnia and Finland. Aqua the majority of small lakes have formed from the melting of the glacier. North coast Majestic lakes South rising faster, which leads to the effect of “transfusion” of water and slow the flooding of land in the South.
Lakes are one of the hugest on Earth accumulations of fresh water, second in this indicator, yet, even taken all together, lake Baikal. They are connected among themselves by rivers and channels and seems to be because the water flows from 1 to another. Lake superior is the largest freshwater lake on the planet, and the smallest 5 – Ontario – bigger than the biggest in Europe Ladoga lake. The average depth of them, not being very big, all the same, such that it exceeds the average depth of the Baltic and North seas.
The title of the lake superior speaks for itself. This lake is the huge area of freshwater lake in the world, with an area of 82,4 km2. Has stock in lake Huron by the river Saint MERIS.
Lake Huron 2nd largest lake in the system, Majestic lakes and the third largest freshwater lake in the world, occupying around 60 km2. The Straits of Mackinac connects lake St. Clair and the river Detroit with lake Erie.
Lake Michigan – 4th largest freshwater lake in the world – 58 thousand km2. A navigable canal connects to the Mississippi system. From time to time, lakes Michigan and Huron are considered as a whole (together with the river Saint MERIS). Supporters of this view rely on the fact that lake Michigan and Huron form a single hydrological unit: their levels are similar, they are connected by the Strait is 40 m deep and 8 km wide in its most narrow place. With similar considering the size of lake Michigan-Huron exceeds 117 thousand km2, making it the largest freshwater reservoir of the planet and the second largest lake after Caspian sea.
Lake Erie is the tenth largest freshwater lake in the world, with an area of approximately 26 km2. The Niagara river and the Welland canal connected lake Ontario and the navigable canal from the Hudson river.
Lake Ontario is the tiniest of the largest lake in the Majestic lakes system, with an area of about 20 km2. The St. Lawrence river connected to the Atlantic ocean.
Previously, waste cardboard and other factories were dumped into these lakes. First, much dirty was lake Erie, it is all covered with mud, lost many valuable fish. The government has allocated significant funds for the clean lakes. At the moment the lake clean again.
The Majestic lakes region contains not only the 5 major lakes, and countless small lakes and rivers, also about 35 thousand Islands.
The Majestic lakes navigation is well developed. It ends approximately 140 days per year, and in the rest of the year the entire system of lakes and rivers navigable. The total length of waterways on lakes to the Atlantic ocean equal to 3900 km.
Freight vessels are used special structures – the so-called “brown truck” or “serniki”, which can reach 300 meters in length and are the largest non-Maritime courts in the world. So long justified restrictions on width imposed by the court when passing the locks.