What is the largest freshwater lake group in the world?

What is the largest freshwater lake group in the world?

Answer: The Great Lakes of North America

What is the largest freshwater lake in the world? Where is it? Let me show you the scenery of the Great Lakes in North America.

There are five Great Lakes at the junction of Canada and the United States, which are the five largest freshwater lakes in the world. With a total area of 245,660 square kilometers, they are known as the Mediterranean of North America. The Great Lakes are Lake Superior, Lake Huron, Lake Michigan, Lake Erie and Lake Ontario. This is the largest freshwater lake group in the world. The Great Lakes are the final product of glacial activities that began about 654.38 million years ago. The Great Lakes generally flow from west to east and into the Atlantic Ocean. Except for Lake Michigan and Lake Huron, the elevation of each lake decreases one by one, which leads to the gradual acceleration of the flow rate. The Great Lakes have a great regulating effect on the climate in the surrounding areas. The lake absorbs a lot of hot air in warm months, and then releases it into the atmosphere in Leng Yue.

1 overview

The Great Lakes, with a total area of about 245,660 square kilometers, are the largest fresh water bodies in the world. It is also the largest freshwater lake group in the American continent, known as the Mediterranean Sea. The Great Lakes Basin is about 766 100 km, extending nearly 165438 km from north to south, and the length from the western end of Lake Superior to the eastern end of Lake Ontario is about 1400 km. The lake generally flows from west to east and empties into the Atlantic Ocean. Except Lake Michigan and Lake Huron, the water level of each lake decreased in turn. And except for Lake Michigan, they all belong to the United States and Canada. Lake Superior is the largest freshwater lake in the world.

The Great Lakes are located in a valley that is constantly expanding due to glacial activities. A large amount of ice on the ground also depressed the valley. The Great Lakes are the last stage of the formation of many lakes in this area in the late Pleistocene.

Two reasons

The Great Lakes are the collective name of five connected lakes between the United States and Canada. They are Lake Superior, Lake Michigan, Lake Huron, Lake Erie and Lake Ontario from west to east. The basins of the Great Lakes are mainly eroded by glaciers. During the Quaternary Glacier Period, the Great Lakes region was close to the center of Labrador and Kivadin Glaciers, with an ice sheet of 2400 meters thick and extremely erosive. The weak rock strata in the original low-lying valley were gradually eroded by glaciers and expanded into today's lake basin. When the continental glaciers retreated, ice water accumulated in glacial depressions, forming the water surface of the Great Lakes.

3 composition

Lake superior

LakeSuperior is the northwest and largest of the five great lakes in North America. Canada is in the northeast of the lake, and the United States is in the southwest. The lake is 616km long from east to west, 257km wide from north to south, with an average elevation of180m, a water area of 82103km2 and a maximum depth of 405m. The water storage capacity is 6.5438+0.2 million cubic kilometers. Nearly 200 rivers flow into the lake, with Nipigon River and St. Louis River as the largest rivers. The main islands in the lake are Royal Island (one of the national parks in the United States), Postel Islands, Mickey Peachton Island and St. Ignace Island. There are many woodlands near the lake, with beautiful scenery and sparse population. The water quality of Lake Superior is clear, the lake is stormy, and it is cool in Leng Xia in winter. Seasonal fishing and hunting and tourism are the main projects of the local entertainment industry. There are many kinds of minerals. There are many natural harbors and artificial ports. The main ports are Sander Bay, Sus Saint-Marie, Tacny, Deluce and Ma Kai. The annual sailing period is 8 months. The lake was discovered by French explorers in 1622, and its name was taken from French, meaning? Go to the lake? .

Huron L.

Lake Huron is the second largest of the five great lakes in North America. It extends from northwest to southeast, with a length of 33 1 km and a widest point of 163 km. The lake covers an area of 59,570 square kilometers. There are Lake Superior, Lake Michigan and many rivers. The lake empties into Lake St Clare near Detroit from the southern end. The elevation of the lake is176m, and the maximum depth is 229m. There are many islands in the northeast. The main economic activities in the lake area are logging and fishing. There are many tourist areas along the lake. The sailing season is from the beginning of April to the end of 65438+February, and the main ports are Gulf City, Lockport, Roger Period City, Sagna and Alpina. Lake Huron is the first lake discovered by Europeans, named after the Indians of Lake Huron.

Lake Michigan

Lake Michigan, also known as Lake Michigan, is the third largest lake in North America and the only one belonging to the United States. Hubei is connected with Lake Huron, with a length of 5 17km from north to south and a width of 190km at its widest point. The lake basin covers an area of nearly120,000 square kilometers, and the water area is 57,757 square kilometers. The elevation of the lake is 177m, the deepest point is 28 1m, the average water depth is 84m, and the storage capacity is 4875. About 100 rivers flow into it, and there are many islands at the northern end, with Beaver Island as the largest. There are cliffs eroded by lake waves on the lakeshore, and there are many sand dunes on the southeast coast, especially in Indiana National Lakeside Area and State Park. The climate in the lake area is mild, and most of the lakeshore is a summer resort. The fruit producing area on the east coast is quite famous. There are many winding harbors on the north shore, and there are many trout and salmon in the lake, so the fishery is prosperous. Chicago at the southern tip is an important industrial city with many ports such as Gary, Muskegon, Grimbe, Milwaukee, Grand Rapids and Travis. From mid-February to mid-April in 65438, the harbor was frozen and navigation was blocked, but the lake was rarely completely frozen, and ferries traveled between several ports all the year round.

Lake Erie

Lake Erie is the fourth largest of the five great lakes in North America, with the United States in the east, west and south and Canada in the north. The lake covers an area of 25,667 square kilometers. In the northeast? Southwest, 388 kilometers long, 92 kilometers at its widest point, with an altitude of 174 meters, an average depth of 18 meters and the deepest point of 64 meters, is the shallowest of the five lakes, with a total length of 1200 kilometers. Many rivers such as Detroit River, Huron River and Rio Grande River are injected into it, and the lake water is discharged from the eastern end via niagara river. The islands are concentrated in the western end of the lake, with Piri Island in Canada as the largest. On the northwest coast is Cape peary National Park. The main ports are Buffalo, Erie, Cleveland, Bila, Akhta, Toledo and so on. The industrial zone along the lake led to the closure of many lakeside tourist areas, and the environmental damage was controlled in the late 1970s.

Lake Ontario

Lake Ontario is the easternmost and smallest of the five great lakes in North America, with Canada in the north and the United States in the south. It is roughly oval, with east-west principal axes of 365,438+065,438+0 km and the widest point of 85 km. The water surface is about 19554 square kilometers, the average depth is 86 meters, the deepest point is 244 meters, and the water storage capacity is 1688 cubic kilometers. There are niagara river River, Genesee River, Oswego River, Black River and Trent River, which are connected with Lake Erie through Welland Canal and niagara river. The famous Niagara Falls is connected with Lake Erie and irrigated to Lake Ontario, with a drop of 99 meters. The lake flows into the St. Lawrence River from the eastern end. North of Lake Ontario is an agricultural plain, and industries are concentrated in port cities such as St. Catherine, Toronto, Rochester and Kingston. June 65438+February to April of the following year, the port is closed to navigation.

Other secondary lakes

In addition to the above five great lakes, there are many smaller secondary lakes in the Great Lakes region. The more important ones are LakeNipigon, LakeStClair, LakeSimcoe, LakeNipissing, LakeGeorge, LakeWinnebago and so on.