West Siberian Plain

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.

The Yenisey or Yenisei (, ; , ) is the fifth-longest river system in the world, and the largest to drain into the Arctic Ocean.

The Irtysh () is a river in Russia, China, and Kazakhstan. It is the chief tributary of the Ob and is also the longest tributary in the world.

large plain that occupies the western portion of Siberia

swamp in Russia

The Kazym () is a river in Beloyarsky District, Khanty-Mansi Autonomous Okrug, Russia. It is long, with a drainage basin of . Its average discharge is .

mountain range

The Shiderti (, Şıdertı; in its lower course: Karasu) is a river of Kazakhstan. It is long, and has a drainage basin of .

plain in Western Siberia

river in Altai Krai, Russia

national park in Russia

The Sileti (; ) is a river in Kazakhstan. It is long and has a catchment area of .

strict nature reserve in Khanty-Mansi Autonomous Okrug, Russia

plain in Russia

lake in Kazakhstan

Kyzylkak (; ) is a bittern salt lake in Ertis District, Pavlodar Region, Kazakhstan.

river in Novosibirsk Oblast, Russia

nature reserve in Yamalo-Nenets Autonomous Okrug, Russia

Kalibek (; ) is a bittern salt lake in Taiynsha District, North Kazakhstan Region, Kazakhstan.

The Synya () is a river in Yamalo-Nenets Autonomous Okrug, Russia. The river is long — from the source of the Mokraya Synya at its head— and has a catchment area of .

Zhalauly (; ), is a salt lake in Aktogay District, Pavlodar Region, Kazakhstan.

Akush () or Akysh (), is a salt lake in Kyzylzhar District, North Kazakhstan Region, Kazakhstan and Kazan District, Tyumen Oblast, Russian Federation.

Kishi-Karoy or Kishi Karaoy, meaning "Little Karoy" (; ), is a bittern salt lake in Akzhar District, North Kazakhstan Region, Kazakhstan.

The Baganyonok () is a river in Novosibirsk Oblast, Russia. The river is long and has a catchment area of .

Ulken-Karoy or Ulken Karaoy, meaning "Big Karoy" (; or Большой Карой —Bolshoy Karoy), is a salt lake in Akzhar District, North Kazakhstan Region, Kazakhstan.

Shaglyteniz or Shagalalyteniz (; ) is a lake in Akkayin and Taiynsha districts, North Kazakhstan Region, Kazakhstan.

river in Altai Krai, Russia, flows into the Kuchukskoye Lake

Ebeyty () is a salt lake in Omsk Oblast, Russian Federation.

lake in Kazakhstan

lake in Russia

river in Yamalo-Nenets AO, Russia

lake in Altai Krai, Russia

Menkeser (; ) or Mangisor (), also known as Bulandy (), is a salt lake in Mamlyut District, North Kazakhstan Region, Kazakhstan.

lake in Kazakhstan

Tandovo () is a lake in Barabinsky District, Novosibirsk Oblast, south-central Russia.

nature reserve in the Khanty-Mansi Autonomous Okrug, Russia

Siverga (; , is a salt lake in Kyzylzhar District, North Kazakhstan Region, Kazakhstan and Berdyuzhye and Kazan districts of Tyumen Oblast, Russian Federation.

lake in Kazakhstan

Shyganak or Shaganak (; ), is a salt lake in Aktogay District, Pavlodar Region, Kazakhstan.

Tavolzhan (), also known as Solyonoye () is a salt lake in Sladkovsky District, Tyumen Oblast, Russian Federation.

lake in Kazakhstan