A Russian river; flows northward to the Arctic Ocean; Also called: Ob River.
River in Asian Russia, flowing 3,380 km/2,100 mi from the Altai Mountains through the W Siberian Plain to the Gulf of Ob in the Arctic Ocean. With its main tributary, the Irtysh, it is 5,600 km/3,480 mi long.
Although frozen for half the year, and subject to flooding, the Ob is a major transport route. Novosobirsk and Barnaul are the main ports.
Velika reka u Sibiru.