The Bolshaya Chukochya or Chukochya (; , Revum-Revu)Словарь названий гидрографических объектов России и других стран — членов СНГ , Federal Service for Geodesy and Cartography of Russia, 1999, p. 60 is a river in the Sakha Republic (Yakutia) of the Russian Federation. It is long, and has a drainage basin of .
Course It has its sources in Lake Usun-Kyuel and crosses the tundra roughly northeastwards. In its lower course it flows south of Lake Bolshoye Morskoye. Finally it flows into the Kolyma Gulf of the East Siberian Sea west of the mouths of the Kolyma. Owing to its extreme northerly location the Bolshaya Chukochya freezes up in early October and remains icebound until June.
The Bolshaya Chukochya basin is located between the basins of the Alazeya and the Kolyma. There are study sites near the Bolshaya Chukochya in order to investigate the mineral transformations in the soils affected by permafrost.Mineral Transformations in Permafrost-Affected Soils
Tributaries The main tributaries of the Bolshaya Chukochya are the long Olyor (Олёр) and the long Semen-Yuryakh (Семен-Юрях) on the left, as well as the long Savva-Yuryakh (Савва-Юрях) on the right. There are more than 11,500 lakes in the Bolshaya Chukochya basin, totaling an area of .nature.ykt Большая Чукочья (Чукочья)
Ecology The Kolyma Lowland, the area where the Bolshaya Chukochya flows, has many lakes and marshes. A great variety of birds, such as Siberian cranes, waders and sandpipers, make their habitat in this riverine area.Birds The Cherskii's char (Salvelinus czerskii), is a char species found in the river basin.Salvelinus czerskii, Cherskii's char
Fossil insects, early Pleistocene equids and mammoths have been found in the basin of the Bolshaya Chukochya.Fossil Coleoptera , Early Pleistocene equids (Perissodactyla) & mammoths
See also List of rivers of Russia
References
Further reading