Поможем, Irtysh is the main tributary of the Ob. The total length of theriver is 4,248 km, which is second largest figure among the rivers of the Asian region. The length of the Kazakh section of the Irtysh - 1 835 km. the source of the river is located on the Eastern slopes of the ridge of the Mongolian Altai (border of Mongolia and China).
The section of the river, to the confluence of flow-through lake Zaysan is called Black Irtysh. After passing through the waters of Irtysh river, Bukhtarma HPP using the prefix "black", change to "white".
It should be noted that in addition to the Bukhtarma on the Irtysh river are two hydroelectric power stations - Ust-Kamenogorsk and Shulbinsk. They are also located on the stretch of river below lake Zaisan.
Irtysh for 3 784 km navigable. Navigation on the river begins in April and lasts until November.
The Irtysh river is rich in fish. There are: sterlet, nelma, sturgeon, sturgeon, pike, perch, crucian carp. In the recently launched river carp, bream, perch and Baikal omul.
In Irtysh, there are about 17 tributaries, the largest of which are the rivers Tobol, Ishim and UBA.