Largest river of Siberia: the Obi river

The Obi River is a river of West Siberia of 3,650 km long but if the main aflluente is added the Irtish (4,248 km) with 5,410 km, it is the seventh river in the world. and the second in Asia after the Yangtze River. Its average flow at the mouth is 12,500 m³ / s
It is born by the union of the Chulyshman rivers with the Biya river, which are permanent currents, and in turn come from the thaws produced on the heights of the Altai Massif. The word "ob" in Russian means "both" and explains its name.
The river basin covers more than 3 million square kilometers. Its route since it was born in the mountains of Altai in Central Asia, including territories of Kazakhstan, Mongolia and China, flowing into the Kara Sea in the Arctic Ocean, across the Gulf of Obi.
The Obi River is navigable in almost 2,900 km of travel and is important for the commercialization and distribution of agricultural and livestock products; a large number of industries and hydroelectric dams are installed on its banks to produce electricity and carry out the drinking water process.
Its strategic position and its navigability condition makes it very attractive and important for commercial, industrial, tourist and social operations between these countries.
Fauna: Among the fish, white salmon, carp, sturgeon, perch and others stand out; In winter, it is common to see that many of them die due to lack of oxygen, especially in the union of the Tym River towards the Obi Delta.
It is the westernmost of the three great waterways of Siberia. Like the Yenisei and Lena, the Obi, runs south-north and drains a large region characterized primarily by its low altitudes.
The Obi and its main tributaries, offer seasonal navigation possibilities, representing a very important communication route for a space with strong development potential and, also, a population axis dominated by some large cities such as Novosibirsk, Yekaterinburg and Omsk, which are Large industrial centers
. The great river basin, during the last decades, has become the main place of extraction of hydrocarbons of the Russian Federation. These human activities, sources of wealth and also pollution, threaten rich and varied natural environments, already weakened by climate warming.
Administratively, its course includes Altai krai, Novosibirsk oblst and Tomsk oblast and the autonomous districts of Janti-Mansi and Yamalo-Mansi and Yamalo-Nenets.