Rivers of Novosibirsk

The Ob (; ) is a major river in Russia. It is in western Siberia, and with its tributary the Irtysh forms the world's seventh-longest river system, at . The Ob forms at the confluence of the Biya and Katun which have their origins in the Altai Mountains. It is the westernmost of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Yenisei and the Lena). Its flow is north-westward, then northward.

river in Kemerovo and Novosibirsk Oblasts, Russia

river in Novosibirsk Oblast, Russia, lower tributary of Ob

river in Novosibirsk Oblast, Russia

river in Novosibirsk Oblast, Russia