Chukochya River

BW

The Great Tschukotschja (Russian Большая Чукочья, Bolshaya Tschukotschja; Tschukotschja also alternatively Yakut Рэвум - Рэву, Rewum - REWU ) is a 758 km long tributary of the East Siberian Sea in the northeast of Russia.

Course

The Great Tschukotschja entfließt beyond the Arctic Circle in 44 m height the lake Ussun - Kjujol in a northwesterly direction. In the first few kilometers of the river running through about ten other lakes, including Tjorjut, Tanka and Gojon - Ujalach. The lakes are situated in the southwestern part of the Kolyma lowland, about 100 kilometers northeast of the small town on the left bank of the Kolyma Srednekolymsk. This stream whose valley is separated from the lake district in this area by a flat Endmoränenzug, flows past in just over 20 kilometers from the origin of the Great Tschukotschja.

The Great Tschukotschja flows through its entire length and continue the swampy lake-rich Kolyma lowland. Here, the river meanders extremely strong. The vegetation of the area consists primarily of forest-tundra, from the middle reaches of the tundra. The river finally ends with a more than two -mile-wide estuary in the western part of Kolymabucht the East Siberian Sea. Above the mouth of the funnel the Great Tschukotschja is 200 to 300 meters wide and two meters deep; The flow rate is 0.2 m / s Approximately 70 km of the lower reaches of the Great Tschukotschja are under tidal influence.

Your most important tributaries are Oljor (length 229 km) and Semyon - Jurjach (121 km) from the left and Savva - Jurjach (106 km) from the right. In the basin of the Great Tschukotschja there are about 11,500 lakes, whose total 18.2% of the catchment area accounts (corresponding to 3600 km ²).

The name Tschukotschja also contributes about 50 kilometers southeast of the Great Tschukotschja opening into the East Siberian Sea left ( west ) of the large estuaries of the Kolyma.

Hydrology

The catchment area of the river comprises 19,800 km ². The Great Tschukotschja freezes between late September / early October and May / early June, where they temporarily through freezes to the bottom.

Use and infrastructure

The Great Tschukotschja is navigable in the lower reaches, but is not used for inland navigation, as the area is traversed by very sparsely populated. The population density of the carrying Ulusse ( Rajons ) Srednekolymsk and Nischnekolymsk is only 0.08 respectively 0.06 inhabitants per km ². The only settlement on the River is Tschukotschja ( a former trading post ) on the left bank of the lower reaches, some ten kilometers above the mouth. It belongs to Nasleg (municipality ) Pochodsk and 2001 had only three permanent residents. Any transport infrastructure in the area is missing.