They arent drained by it , it just flows into it.
The principal rivers of the West Siberian Plain are the Ob, Irtysh and Yenisei Rivers.
West Siberian Plains
The West Siberian Plain lies east of the Ural Mountains. It is one of the largest flat areas in the world, covering over 2.6 million square kilometers.
There are a variety of major landforms of Russia. These include the plains of European Russia, the west Siberian plains, the central Siberian Plateau, and the mountains of eastern Siberia.
The major land regions are the North European Plains, West Siberian Plain, Central Siberian Plateau, and the East Siberian Uplands.
Rissia's two main plains are The North European Plain and the West Siberian Plain!
northern European plain and west Siberian plain
The Ural Mountains separate the northern European and west Siberian plains. They form a natural boundary between Europe and Asia.
The Ural Mountains separate the northern European and west Siberian plains. They extend around 2,500 km from the Arctic Ocean to the Ural River. The range forms a natural boundary between Europe and Asia.
Des plains
Central Siberian Plateau
West Siberian plateau