The Kochechum () is a river in

Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

. It flows through the Syverma Plateau in

Krasnoyarsk Krai Krasnoyarsk Krai (, ) is a federal subjects of Russia, federal subject (a krai) of Russia located in Siberia. Its administrative center is the types of inhabited localities in Russia, city of Krasnoyarsk, the second-largest city in Siberia after ...

. It is a right and most significant tributary of the

Nizhnyaya Tunguska The Nizhnyaya Tunguska ( rus, Ни́жняя Тунгу́ска, p=ˈnʲiʐnʲɪjə tʊnˈɡuskə, meaning "Lower Tunguska") is a river in Siberia, Russia, that flows through the Irkutsk Oblast and the Krasnoyarsk Krai. The river is a right tributa ...

General information

The river is long, and its watershed covers . The average discharge at the mouth is .Плато Путорана
''Студенческий туристский клуб «Фортис»'' The part of its basin near the source lies on the southern slopes of

Putorana Plateau The Putorana Plateau () or the Putorana Mountains is a mountainous area in Russia. It is a large massif or plateau crossed by mountain ranges. The nearest large settlement is Norilsk, where foreign travel is closed city#Post-Soviet, restricted. ...

. It flows to the south direction through Syverma Plateau and joins

near the town Tura. The primary tributaries of the Kochechum are Embenchime, Tembenchi and Turu. The confluence of Kochechum and Nizhnyaya Tunguska corresponds to the farthest point of fairway section upstream off the

Yenisey The Yenisey or Yenisei ( ; , ) is the list of rivers by length, fifth-longest river system in the world, and the largest to drain into the Arctic Ocean. Rising in Mungaragiyn-gol in Mongolia, it follows a northerly course through Lake Baikal a ...

Climatic conditions and water regime

The basin of the river entirely belongs to the zone of continental subarctic climate. Winter period starts in October and ends in May, during calendar winter temperatures can plummet below . Due to average temperatures below freezing in this area, its watershed belongs to the region of continuous

permafrost Permafrost () is soil or underwater sediment which continuously remains below for two years or more; the oldest permafrost has been continuously frozen for around 700,000 years. Whilst the shallowest permafrost has a vertical extent of below ...

with a frozen layer that varies in depth between . The permafrost effectively blocks any underground supply; all water flowing through the river comes from snow and rain. The river stays ice-bound from October to May or June every year. As watershed area does not contain any significant lakes. The flow of the Kochechum strongly depends on the season, approaching zero in early spring and reaching its maximum in June.Физическая география России
''Часть 2, стр.151'' The latter month corresponds to a seasonal inundation, which usually produces 75 percent of the overall annual yield of water.

References

External links

''sci-lib:

Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Great Russian Enc ...

'' Rivers of Krasnoyarsk Krai {{Siberia-river-stub