Ob River

Ob (Обь)
River
Near Barnaul
Tributaries
- left	Katun River, Anuy River, Charysh River, Aley River, Parabel River, Vasyugan River, Irtysh River, Northern Sosva River
- right	Biya River, Berd River, Inya River, Tom River, Chulym River, Ket River, Tym River, Vakh River, Pim River, Kazim River
Ceeties	Biysk, Barnaul, Novosibirsk, Nizhnevartovsk, Surgut
Primar soorce	Katun River
- location	Belukha Muntain, Altai Republic
- elevation	2,300 m (7,546 ft)
- coordinates	49°45′0″N 86°34′0″E / 49.75000°N 86.56667°E / 49.75000; 86.56667
Seicontar soorce	Biya River
- location	Loch Teletskoye, Altai Republic
- elevation	434 m (1,424 ft)
- coordinates	51°47′11″N 87°14′49″E / 51.78639°N 87.24694°E / 51.78639; 87.24694
Soorce confluence	Near Biysk
- elevation	195 m (640 ft)
- coordinates	52°25′54″N 85°01′26″E / 52.43167°N 85.02389°E / 52.43167; 85.02389
Mooth	Gulf o Ob
- location	Ob Delta, Yamalia
- elevation	0 m (0 ft)
- coordinates	66°32′02″N 71°23′41″E / 66.53389°N 71.39472°E / 66.53389; 71.39472Coordinates: 66°32′02″N 71°23′41″E / 66.53389°N 71.39472°E / 66.53389; 71.39472
Lenth	3,650 km (2,268 mi)
Basin	2,972,497 km2 (1,147,688 sq mi)
Discharge	for Salekhard
- average	12,475 m3/s (440,550 cu ft/s) [1]
- max	40,200 m3/s (1,419,650 cu ft/s)
- min	2,360 m3/s (83,343 cu ft/s)
Cairt o the Ob River wattershed

The Ob River (Roushie: Обь), an aa Obi, is a major river in western, Siberia, russia an is the world's fift longest river. It is the wastrenmaist o the three great Siberie rivers that flae intae the Arctic Ocean the ither twa bein the Yenisei River a the Ob River). The Gulf o Ob is the world's largest estuary.