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Seymchan (Kolyma)

Coordinates: 62°55′17″N 152°28′04″E / 62.921389°N 152.467778°E / 62.921389; 152.467778
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Seymchan
Сеймчан
View of the river
Seymchan (Kolyma) is located in Magadan Oblast
Seymchan (Kolyma)
Mouth location in Magadan Oblast, Russia
Location
CountryMagadan Oblast, Russia
Physical characteristics
Source 
 • locationConfluence of Left Seymchan and Right Seymchan
Upper Kolyma Highlands
 • coordinates63°59′12″N 154°14′41″E / 63.986667°N 154.244722°E / 63.986667; 154.244722
MouthKolyma
 • location
Near Seymchan
 • coordinates
62°55′17″N 152°28′04″E / 62.921389°N 152.467778°E / 62.921389; 152.467778
Length158 km (98 mi)
Basin size3,600 km2 (1,400 sq mi)
Discharge 
 • average35.24 m3/s (1,244 cu ft/s)
Basin features
ProgressionKolymaEast Siberian Sea

The Seymchan (Russian: Сеймчан) is a river in Srednekansky District, Magadan Oblast, Russia. It is a left tributary of the Kolyma, with a length of 158 kilometres (98 mi) a drainage basin of 3,600 square kilometres (1,400 sq mi).[1][2]

The name comes from the Yakut language word Kheymchen, which is an area of open water surrounded by sea ice.[3]

Course

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The river rises in the Upper Kolyma Highlands, eastern limits of the Chersky Range, at the confluence of Left Seymchan and Right Seymchan. It flows first in a northeast direction, bending along its course until it flows in a southeastern direction. Finally it meets the Kolyma near Seymchan, 158 km (98 mi) from its mouth, downstream from the mouth of the Buyunda on the opposite bank.[4]

Together with the Buyunda that flows roughly northwards on the other side of the Kolyma basin, the Seymchan forms the Seymchan-Buyunda Depression, which limits the Upper Kolyma Highlands from the east.[5]

Its main tributaries are the Medvezhya and the Verina.

River Verina and Tuonnach Massif in the background.
River Medvezhya, another tributary of the Seymchan.

See also

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References

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  1. ^ "Река Сеймчан (в верховье Прав. Сеймчан) in the State Water Register of Russia". textual.ru (in Russian).
  2. ^ Ceyмчан Great Soviet Encyclopedia in 30 vols. / Ch. ed. A.M. Prokhorov - 3rd ed. - M, 1969-1978. (in Russian)
  3. ^ W.J. Stringer and J.E. Groves. 1991. Extent of Polynyas in the Bering and Chukchi Seas
  4. ^ 1,000,000 scale Operational Navigation Chart; Sheet D-8
  5. ^ "Water of Russia - Buyunda (in Russian)". Retrieved 6 January 2022.
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