Northern Ridge
Encyclopedia
The Northern Ridge, Northern Uvaly, Severnyye Uvaly , is the chain of hills in the northern part of the East European Plain
East European Plain
The East European Plain is a plain comprising a series of river basins in Eastern Europe. Together with the Northern European Plain it constitutes the European Plain. It is the largest mountain-free part of the European landscape.The plain spans approximately and averages about in elevation...

 in Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

. The Northern Ridge divides the river basins of the Northern Dvina River (north) and the Volga River
Volga River
The Volga is the largest river in Europe in terms of length, discharge, and watershed. It flows through central Russia, and is widely viewed as the national river of Russia. Out of the twenty largest cities of Russia, eleven, including the capital Moscow, are situated in the Volga's drainage...

 (south). The chain is located roughly in the west-east direction, between the source of the Kostroma River
Kostroma River
The Kostroma is a river in the European part of Russia. It flows through the Kostroma and Yaroslavl Oblasts, and is a left tributary of the Volga, which it enters at the Gorky Reservoir, at the city of Kostroma, at ....

 and the sources of the Vychegda River
Vychegda River
Vychegda is a river in the European part of Russia, tributary to the Northern Dvina. Its length is about . Its source is approximately west of the northern Ural Mountains. It flows roughly in western direction, through Komi Republic and Arkhangelsk Oblast. The largest city along the Vychegda is...

 and the Kama River
Kama River
Kama is a major river in Russia, the longest left tributary of the Volga and the largest one in discharge; in fact, it is larger than the Volga before junction....

. The Northern Ridge is approximately 200 km long. Roughly, the chain is limited from the north by the valleys of the Sukhona
Sukhona River
The Sukhona is a river in the European pert of Russia, a tributary of the Northern Dvina River. The course of the Sukhona lies in Ust-Kubinsky, Sokolsky, Mezhdurechensky, Totemsky, Tarnogsky, Nyuksensky, and Velikoustyugsky Districts of Vologda Oblast in Russia. It is long, and the area of its...

 and the Vychegda
Vychegda River
Vychegda is a river in the European part of Russia, tributary to the Northern Dvina. Its length is about . Its source is approximately west of the northern Ural Mountains. It flows roughly in western direction, through Komi Republic and Arkhangelsk Oblast. The largest city along the Vychegda is...

, and from the south by the course of the Volga in the west and by the course of the Kama in the east.

Administratively, the Northern Ridge is located in Kostroma
Kostroma Oblast
Kostroma Oblast is a federal subject of Russia . Its administrative center is the city of Kostroma.Major historic towns include Kostroma, Sharya, Nerekhta, Galich, Soligalich, and Makaryev. Textile industries have been developed there since the early 18th century...

, Vologda
Vologda Oblast
Vologda Oblast is a federal subject of Russia . Its administrative center is Vologda. The largest city is Cherepovets.Vologda Oblast is rich in historic monuments, such as the magnificent Kirillo-Belozersky Monastery, Ferapontov Convent , medieval towns of Velikiy Ustyug and Belozersk, baroque...

, Kirov
Kirov Oblast
Kirov Oblast is a federal subject of Russia . Its administrative center is the city of Kirov. Population: -History:In the late 19th and early 20th centuries, Vyatka remained a place of exile for opponents of the tsarist regime, including many prominent revolutionary figures.In 1920, a number of...

 Oblasts, the Komi Republic
Komi Republic
The Komi Republic is a federal subject of Russia .-Geography:The republic is situated to the west of the Ural mountains, in the north-east of the East European Plain...

, and Perm Krai
Perm Krai
Perm Krai is a federal subject of Russia that came into existence on December 1, 2005 as a result of the 2004 referendum on the merger of Perm Oblast and Komi-Permyak Autonomous Okrug. The city of Perm became the administrative center of the new federal subject...

 of Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

.

The landscape of the Northern Ridge originates from the Ice Age
Ice age
An ice age or, more precisely, glacial age, is a generic geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental ice sheets, polar ice sheets and alpine glaciers...

 and has the glacial nature. The hills were polished by the glacier and currently achieve the height of 293 metres (961.3 ft) (in Babushkinsky District
Babushkinsky District, Vologda Oblast
Babushkinsky District is an administrative district , one of the twenty-six in Vologda Oblast, Russia. Municipally, it is incorporated as Babushkinsky Municipal District...

, Vologda Oblast). The rivers flow in deep ravine
Ravine
A ravine is a landform narrower than a canyon and is often the product of streamcutting erosion. Ravines are typically classified as larger in scale than gullies, although smaller than valleys. A ravine is generally a fluvial slope landform of relatively steep sides, on the order of twenty to...

s. The principal rivers which have their source in the Northern Ridge are the Yug
Yug River
The Yug is a river in Kichmengsko-Gorodetsky, Nikolsky, and Velikoustyugsky Districts of Vologda Oblast and in Podosinovsky District of Kirov Oblast in Russia. It is long, and the area of its basin...

, the Luza
Luza River
The Luza is a river in Oparinsky and Luzsky Districts of Kirov Oblast, Priluzsky District of the Komi Republic, and Velikoustyugsky District of Vologda Oblast in Russia. It is a right tributary of the Yug River. It is long, and the area of its basin . Its main tributaries are the Lopyu, the...

, the Unzha
Unzha River
Unzha River , a river in the Vologda Oblast and Kostroma Oblast in Russia, a tributary of the Volga River. Its length is 426 km. The area of the basin is 28,900 km². The Unzha River begins at the confluence of the Kema River and the Lundonga River. It flows into the Unzhensky Cove of the Gorkovsky...

, the Sysola
Sysola River
The Sysola River is located mainly in Northwestern Russia's Komi Republic, although its two branches have their sources in the Kirov Oblast, and the Perm Oblast. The Sysola is a tributary of the larger Vychegda River, which it meets in Syktyvkar....

, and the Moloma
Moloma River
Moloma River is a river in Kirov Oblast in Russia, an arm of the Vyatka River. The length of the river is 419 km, the area of its basin is 12,700 km². The Moloma freezes up in early November and stays icebound until late April....

.
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