The Ob River, also Ob', is a major river in western Siberia, Russia, and is the world's seventh-longest river. It forms at the confluence of the Biya and Katun Rivers which have their origins in the Altay Mountains. It is the westernmost of the three great Siberian rivers that flow into the Arctic Ocean.
The Lena is the easternmost of the three great Siberian rivers that flow into the Arctic Ocean. With a mean annual discharge of 588 cubic kilometers per year, it is the second largest of the Arctic rivers. It is the largest river whose catchment is entirely within the Russian territorial boundaries. Permafrost underlies most of the catchment, with 77% of the catchment containing continuous permafrost.
The Kostroma is a river in the European part of Russia. It flows through the Kostroma and Yaroslavl Oblasts, and becomes a left tributary of the Volga, which it enters at the Gorky Reservoir, at the city of Kostroma, at 57°46′44″N40°53′55″E.
The Kama is a river 1,805 kilometres (1,122 mi) long in Russia. It is the longest left tributary of the Volga and the largest one in discharge. At their confluence, in fact, the Kama is even larger than the Volga.
The Northern Dvina is a river in northern Russia flowing through the Vologda Oblast and Arkhangelsk Oblast into the Dvina Bay of the White Sea. Along with the Pechora River to the east, it drains most of Northwest Russia into the Arctic Ocean. It should not be confused with Western Dvina.
The Kuban River is a river in the Northwest Caucasus region of European Russia. It flows mostly through Krasnodar Krai for 660 kilometres (410 mi) but also in the Karachay–Cherkess Republic, Stavropol Krai and the Republic of Adygea.
The Klyazma River is a river in the Moscow, Nizhny Novgorod, Ivanovo and Vladimir Oblasts in Russia, a left tributary of the Oka River.
The Sviyaga (Russian: Свияга, Tatar: Зөя, Chuvash: Сĕве) is a river in the Ulyanovsk Oblast and Tatarstan, a right tributary of the Volga River. It is 375 kilometres (233 mi) long, and its drainage basin covers 16,700 square kilometres (6,400 sq mi). The Sviyaga River flows into the Sviyaga Cove of the Kuybyshev Reservoir, west of Kazan. It freezes up in November or December and stays under the ice until April or May. Major tributaries are the Arya, Bula, Karla, Kubnya, and Tosha rivers.
Unzha River, a river in the Vologda Oblast and Kostroma Oblast in Russia, a tributary of the Volga River. It is 426 kilometres (265 mi) long, and its basin covers 28,900 square kilometres (11,200 sq mi). The Unzha River begins at the confluence of the Kema River and the Lundonga River. It flows into the Unzhensky Cove of the Gorkovsky Reservoir. The Unzha River freezes up between October and December and stays under the ice until April or May. The main tributaries are the Viga, Neya, and the Mezha. The towns of Kologriv, Manturovo and Makaryev are along the Unzha River.
The Vyatka River is a river in Kirov Oblast and the Republic of Tatarstan in Russia, a right tributary of the Kama River. It is 1,314 kilometres (816 mi) long, and its drainage basin covers 129,000 square kilometres (50,000 sq mi).
The Velikaya is a river in Novosokolnichesky, Pustoshkinsky, Sebezhsky, Opochetsky, Pushkinogorsky, Ostrovsky, Palkinsky, and Pskovsky Districts of Pskov Oblast, as well as in the city of Pskov in Russia. It is a major tributary of Lake Peipus and belongs to the basin of the Narva River. It is 430 kilometres (270 mi) long, and the area of its basin 25,200 square kilometres (9,700 sq mi). The name of the river means literally "Grand" or "Great" in Russian. The towns of Opochka, Ostrov and Pskov are located on the banks of the Velikaya. The principal tributaries of the Velikaya are the Alolya River (right), the Issa River (left), the Sorot River (right), the Sinyaya River (left), the Utroya River (left), the Kukhva River (left), the Cheryokha River (right), and the Pskova River (right).
The Msta is a river in Vyshnevolotsky, Udomelsky, and Bologovsky Districts of Tver Oblast and in Borovichsky, Okulovsky, Lyubytinsky, Malovishersky, Krestetsky, and Novgorodsky Districts, as well as in the town of Borovichi of Novgorod Oblast of Russia. It is a tributary of Lake Ilmen. It is 445 kilometres (277 mi) long, and the area of its basin 23,300 square kilometres (9,000 sq mi). The principal tributaries of the Msta are the Berezayka (left), the Uver (right), and the Kholova (left). The town of Borovichi and the urban-type settlement of Lyubytino are located on the banks of the Msta.
The Tvertsa is a river in Vyshnevolotsky, Spirovsky, Torzhoksky, and Kalininsky Districts, as well as in the cities of Torzhok and Tver in Tver Oblast, Russia, a left tributary of the Volga River. It is 188 kilometres (117 mi) long, and the area of its basin 6,510 square kilometres (2,510 sq mi). The principal tributaries of the Tvertsa are the Tigma River (left), the Shchegrinka River (right), the Osuga River (right), the Logovyazh River (left), and the Kava River (left).
Selizharovka is a river in Ostashkovsky and Selizharovsky Districts of Tver Oblast, Russia, a left tributary of the Volga River. The length of the river is 36 kilometres (22 mi), and the area of its drainage basin is 2,950 square kilometres (1,140 sq mi). It is one of the uppermost substantial tributaries of the Volga. The settlement of Selizharovo is located near the river mouth.
Sogozha is a river in Vologda and Yaroslavl Oblasts in Russia. It is 125 kilometres (78 mi) long, with a drainage basin of 2,950 square kilometres (1,140 sq mi).
Nyomda River is a river in Kostroma Oblast and Ivanovo Oblast in Russia, a left tributary of the Volga River. It flows into the Nyomda Bay of the Gorky Reservoir of the Volga River. The river is 146 kilometres (91 mi) long, and its drainage basin covers 4,750 square kilometres (1,830 sq mi). The Nemda freezes up in November and remains icebound until mid-April.
Slavyanka is a river in Leningrad Oblast of Russia. It is a tributary of the Neva River, and it is 31 kilometres (19 mi) long, with a drainage basin of 230 square kilometres (89 sq mi).
Razdolnaya or Suifen is a river in People's Republic of China and Russia.
Veslyana River – is a river in Perm Krai and Komi Republic, Russia, a left tributary of the Kama River, which in turn is a tributary of the Volga River. It starts in the southeastern portion of Ust-Kulomsky District of the Komi Republic, about 7 kilometres (4 mi) from the border with Perm Krai. It flows through the Gaynsky District of Perm Krai and into the Kama River 1,193 kilometres (741 mi) from its mouth, 145 metres (476 ft) above sea level, near the rural locality of Ust-Veslyana. The river is 266 kilometres (165 mi) long, and the area of its drainage basin is 7,490 square kilometres (2,890 sq mi).
Saba is a river in Leningrad Oblast, Russia, a left tributary of Luga River. It is 90 kilometres (56 mi) long. The area of its drainage basin is 1,320 square kilometres (510 sq mi). Its origin is southwestern portion of Krashogorskoye Lake. Main tributaries include:
