This paper analyzes the reasons for the clear water quality of the rivers around Hudson Bay.

The reasons for the clear water quality of the rivers around Hudson Bay are as follows:

The surface rocks are hard and the flowing water erosion is weak; The surface fluctuation is small, and the river velocity is slow; High vegetation coverage and good soil and water conservation; Low population density and little damage to the natural environment.

Hudson Bay is located in the marginal sea of the Arctic Ocean, and extends into the gulf of the North American continent. It is located in the northeast of Canada. The northeast is connected with the Atlantic Ocean through the Hudson Strait, and the north is connected with Fox Bay and communicates with the Arctic Ocean through its northern waterway.

it is about 1375 kilometers long from north to south and 96 kilometers wide from east to west. It covers an area of 819, square kilometers with an average depth of about 1 meters and a maximum depth of 274 meters. Because it is located at high latitude and lives inland, the climate is very cold, with an average annual temperature of-12.6 C.

the water temperature is low, and the surface water temperature can reach 3-9℃ in August and September, and most of the time the sea surface is frozen. The salinity is 24‰. The ocean current flows in with ice from Fox Bay, flows out from Hudson Strait, and flows into Labrador cold current, showing counterclockwise circulation.

the seabed topography is deep in the northeast and shallow in the southwest. The north-central part is a basin with a depth of more than 2 meters, the middle part is a shoal, and the southwest part is shallower. The western coast is relatively flat and has no islands, while the eastern coast is relatively complex and multi-islands.

salinity increases with depth, with 2‰ in the upper layer above 1.8m and 31‰ in the deepest layer. Affected by the intense tide along the Labrador coast. The sea current with ice cubes flows counterclockwise from Fox Bay into the Bay.

seabed sediments are all terrestrial materials. Most of Hudson Bay is located near 6 north latitude, with long and cold winters and short and cool summers. Ice and floating ice exist in the bay for almost a year. There are often storms and dense fog in the bay, and there are about 3 foggy days in a year.

Introduction of Hudson's Bay Company:

Hudson's Bay Company is the earliest commercial joint-stock company in North America and one of the earliest companies in the world. The company used to be the largest landowner in the world, and its Rupert occupied a large area of land in North America.

From the York factory on the Hudson Bay, the former site of the company's headquarters, it controlled the fur trade in most British-occupied North America for centuries. At the same time, it also undertook the exploration of the early North American continent, thus actually becoming the local government before the arrival of the great immigration tide.

Its merchants and orcs forged early relationships with many local aboriginal tribes, and its network of post stations gradually became the official institutions of Canada and the western United States.

in the late 19th century, its vast territory became most of the newly formed dominion of Canada, and the company became the largest private landowner. When the fur business declined, the company entered the commodity market and sold necessities to new immigrants in western Canada.

Today, the company has become the most famous department store in Canada. Hudson's Bay Company Archives is located in Winnipeg, Manitoba, Canada. ?