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The Ob River empties into the Arctic Ocean.
Ob River is a major river in western Siberia, Russia.
The Ob River is a major river in western Siberia, Russia. It is the country's fourth longest river. The Gulf of Ob is the world's longest estuary.
The Ob River (also known as Obi River) is located entirely in Russia.
The average depth of the Ob River during low water is between four and six meters. The Ob River is the world's fifth longest river.