The Mayn River sometimes spelled Main River, is a river in Chukotka Autonomous Okrug

Chukotka Autonomous Okrug

Chukotka Autonomous Okrug , or Chukotka , is a federal subject of Russia located in the Russian Far East.Chukotka has a population of 53,824 according to the 2002 Census, and a surface area of . The principal town and the administrative center is Anadyr...

 (Magadan Oblast

Magadan Oblast

Magadan Oblast is a federal subject of Russia in the Far Eastern Federal District. Its administrative center is the city of Magadan....

) in Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

, one of the major tributaries of the Anadyr River

Anadyr River

Anadyr is a river in the far northeast Siberia which flows into Anadyr Bay of the Bering Sea and drains much of the interior of Chukotka Autonomous Okrug. Its basin corresponds to the Anadyrsky District of Chukotka....

. The length of the river is 475 km. The area of is drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 is 32,800 km². It is a right tributary, flowing roughly northwards from its source in the small Mainskoe Lake, located in the northern part of the Parapol Valley, in the Koryak Mountain

Koryak Mountains

The Koryak Mountains are a mountain range in Far-Eastern Siberia, Russia, located south of the Anadyr River, and northeast of the Kamchatka Peninsula. Rivers Main and Velikaya have their sources in the Koryak Range. They are the second largest mountain range in all of Siberia....

 Range. This river passes then through sparsely populated areas of the forest-tundra subzones of Chukotka. The vegetation of the area includes mosses, lichens, dwarf shrubs, and sedge.

The Main River meets the Anadyr at Ust-Maynin the mid-lower stretch of its course, in an area of wetlands and small lakes, about 65 km further upstream from the confluence of the Anadyr and the Belaya River

Belaya River

Belaya River may refer to the following rivers in Russia:*Belaya River , a tributary of the Lake Imandra in the Murmansk Oblast*Belaya River , a tributary of the Kama River in the Republic of Bashkortostan...

. All these rivers are frozen for about eight to nine months in a year.

The whole basin of the Main River and its tributaries belong to the Chukotka Autonomous Okrug.

Latitude: 63° 30' N, Longitude: 171° 15' E

The chum salmon

Chum salmon

The chum salmon, Oncorhynchus keta, is a species of anadromous fish in the salmon family. It is a Pacific salmon, and may also be known as dog salmon or Keta salmon, and is often marketed under the name Silverbrite salmon...

 and the sockeye salmon

Sockeye salmon

Sockeye salmon , also called red salmon or blueback salmon in the USA, is an anadromous species of salmon found in the Northern Pacific Ocean and rivers discharging into it...

 are common in the waters of the Main River.

Vayegi town lies in the Main's middle course and Ust-Mayn village lies at the confluence of the Main and Anadyr Rivers.