Koolen (lake)

"Koolen" redirects here. For people with the surname Koolen, see Koolen (surname).

Koolen (Eskimo–Aleut: Koglu) is a lake of Chukotsky District, Chukotka Autonomous Okrug, Russia. Its name originated in the Chukchi word Koolёn, a fault or deep chasm.^[1]

Koolen
Коолень (Russian) Koolёn (Chukot) Koglu (Eskimo–Aleut languages)
Koolen Sentinel-2 image
Koolen Location in Chukotka Autonomous Okrug, Russia
Location	Chukotsky District, Chukotka Autonomous Okrug
Coordinates	65°56′N 171°6′W
Primary inflows	Gytgykoymavaam, Endoyguem
Primary outflows	Koolenveyem
Basin countries	Russia
Max. length	15 km (9.3 mi)
Max. width	1.5 km (0.93 mi)
Surface area	264 km2 (102 sq mi)
Max. depth	100 m (330 ft)
Surface elevation	42 m (138 ft)
Frozen	From October to June

Geography

Koolen is a long and narrow lake located in the Inan Range area of the Chukotka Mountains, at the eastern end of the Chukotka Peninsula, 13 km from the coast of the Chukchi Sea.^[2] The highest point near the lake is Mount Yttyvyt, a 939-metre-high (3,081 ft) mountain.

Koolen has a tectonic origin. Its water has a very weak content in minerals and is very transparent. The lake has a deep-blue tint and in the areas of greater depths the blue is so dark that it looks almost black. The area around the lake is uninhabited, the nearest town is Lavrentiya, located 44 km to the southwest.

Koolen map section

Fauna

Arctic char, least cisco and grayling are common in the waters of the lake.^[3]

See also

• List of lakes of Russia