Is a major river in Western Siberia. It is the largest tributary of the Kara Sea. The Ob is formed by the confluence of the Biya and Katun Rivers. It flows west through the West Siberian Plain before entering the Gulf of Ob. The is about 3,650 km long and has a basin are of about 2,990,000 square kms.
Its geographic coordinates are:
- Latitude: 66.555 N (Mouth)
- Longitude: 66.545 E (Mouth)
The Biya River rises in the Altai Mountains. The Katun River also rises in the Altai Mountains and flows into Lake Teletskoe before continuing on to join the Biya. The combined Biya and Katun rivers form the Ob.
The Ob flows through a variety of landscapes, including forests, grasslands, and swamps. The river is used for transportation, fishing, and hydroelectric power generation. The Ob is also an important source of fresh water for the people who live in its basin.