Koolen (lake)

{{Short description|Lake of Chukotsky District, Chukotka Autonomous Okrug, Russia}} {{redirect|Koolen|people with the surname Koolen|Koolen (surname)}} {{Infobox lake | name = Koolen | native_name = {{plainlist| * {{native name|ru|Коолень}} * {{native name|ckt|Koolёn}} * {{native name|esx|Koglu}} }} | image = Koolen 2022-07-13-23 59 Sentinel-2 L2A.jpg | caption = Koolen Sentinel-2 image | pushpin_map = Russia Chukotka Autonomous Okrug | pushpin_map_caption = Location in Chukotka Autonomous Okrug, Russia | image_bathymetry = | caption_bathymetry = | location = Chukotsky District, Chukotka Autonomous Okrug | coords = {{coord|65|56|N|171|6|W|display= inline title}} | type = | inflow = Gytgykoymavaam, Endoyguem | outflow = Koolenveyem | catchment = | basin_countries = Russia | length = {{convert|15|km|abbr=on}} | width = {{convert|1.5|km|abbr=on}} | area = {{convert|264|km2|abbr=on}} | depth = | max-depth = {{convert|100|m|abbr=on}} | volume = | residence_time = | shore = | elevation = {{convert|42|m|ft|abbr=on}} | frozen = From October to June | islands = | sections = | cities = }}

'''Koolen''' ({{langx|esx|Koglu|label=Eskimo–Aleut}}) is a lake of Chukotsky District, Chukotka Autonomous Okrug, Russia. Its name originated in the Chukchi word ''Koolёn'', a fault or deep chasm.<ref>Boris Zhulanov. ''My Stern, Gentle Koolen'' - Ural pathfinder, 1990, number 10, pp 56-59</ref>

==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.<ref name="mapcarta">{{cite web|url=http://mapcarta.com/16594304|title=Ozero Koolen|work=Mapcarta|accessdate=3 May 2016}}</ref> The highest point near the lake is Mount Yttyvyt, a {{convert|939|m|ft|adj=mid|-high}} 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. thumb|300px|none|Koolen map section

==Fauna== Arctic char, least cisco and grayling are common in the waters of the lake.<ref>[https://xapuyc.ru/zones_e.htm Travel and fly-fishing in the Russian Far East]</ref>

==See also== *List of lakes of Russia

==References== {{Reflist}}

==External links== *[https://www.panoramio.com/photo/68829363 Picture of the lake] *[http://onlinelibrary.wiley.com/doi/10.1029/97TC01170/pdf Koolen metamorphic complex, NE Russia]

Koolen Category:Chukotka Mountains Category:Chukotsky District