Kochechum River

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Coordinates: 64°17′00″N 100°13′00″E / 64.28333°N 100.21667°E / 64.28333; 100.21667

Kochechum (Кочечум)
River
City Tura
Source
 - location Central Siberian Plateau, Russia
Mouth Nizhnyaya Tunguska
 - elevation 125 m (410 ft)
Length 733 km (455 mi)
Basin 96,400 km2 (37,220 sq mi)
Discharge for Nizhnyaya Tunguska
 - average 600 m3/s (21,189 cu ft/s)
Russian map of the Nizhnyaya Tunguska basin with Kochechum river joining it from the north near locality Tura.

The Kochechum (Russian: Кочечум) is a river in Siberia, Russia, it flows through the Krasnoyarsk Krai. It is right and most significant inflow of the Nizhnyaya Tunguska river.

General information

The length of the river is 733 km, the area of watershed is 96,400 km², the average discharge in the mouth equal to 600 m3/s.[1] The part of its basin near the source lies on the southern slopes of Putorana Plateau. It flows to the south direction through Syverma Plateau and joins Nizhnyaya Tunguska near the town Tura. The primary tributaries of Kochechum are Embenchime, Tembenchi and Turu.

The confluence of Kochechum and Nizhnyaya Tunguska corresponds to the farthest point of fairway section upstream off the Yenisei river.

Climatic conditions & 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 -60 °C. Due to average temperatures below freazing point in this area, its watershed belongs to the region of continuous permafrost with depth of frozen layer varies between 50 and 200 meters. The permafrost effectively blocks any underground supply, all water flowing through the river comes with snow and rain. The river stays ice-bound from October to May/June every year.

As watershed area doesn't contain any significant lakes, the flow of the Kochechum strongly depends on season of year closing zero value in early spring and reaching its maximum in June.[2] The latter month corresponds to its seasonal inundation, which usually gives 75% of the overall annual yield of water.

References

  1. ↑ (Russian) Плато Путорана, Студенческий туристский клуб «Фортис»
  2. ↑ (Russian) Физическая география России, Часть 2, стр.151

External links

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