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The Alazeya (Russian: Алазея; Yakut: Алаһыай, romanized: Alahıay) is a river in the northeastern part of Yakutia, Russia which flows into the Arctic between the basins of the larger Indigirka to the west and the Kolyma to the east.

Siberia Alaz.png
Location of the Alazeya in Far-East Siberia.
Native nameАлазея
Physical characteristics
 • locationConfluence of the Nelkan and Kadylchan
 • elevation116 m (381 ft)
 • location
East Siberian Sea
 • coordinates
70°51′42″N 153°40′46″E / 70.8618°N 153.6795°E / 70.8618; 153.6795Coordinates: 70°51′42″N 153°40′46″E / 70.8618°N 153.6795°E / 70.8618; 153.6795
 • elevation
0 m (0 ft)
Length1,590 km (990 mi) (total)
Basin size64,700 km2 (25,000 sq mi)
 • average320 m3/s (11,000 cu ft/s)


The river is 1,590 kilometres (990 mi) long. The area of its basin is 64,700 square kilometres (25,000 sq mi).[1] The Alazeya is formed by the confluence of the rivers Nelkan and Kadylchan in the slopes of the Alazeya Plateau. It crosses roughly northwards through the tundra meandering among the flat, marshy areas of the Kolyma Lowland, part of the greater East Siberian Lowland. Mount Kisilyakh-Tas is a notable kigilyakh site on the right bank of the Alazeya River at 69°42′N 155°0′E / 69.700°N 155.000°E / 69.700; 155.000.[2]

There are more than 24,000 lakes in its basin. The biggest tributary of the Alazeya is the Rassokha that joins it from the left in its lower course. Finally the Alazeya drains into the Kolyma Bay of the East Siberian Sea, close to Logashkino.

The river freezes in late September through early October and stays icebound until late May through early June.

Map of the Alazeya basin.


Dmitrii Zyryan was the first Russian to reach the Alazeya in 1641,[3] but did not found a permanent settlement.

See alsoEdit


  1. ^ Russian State Water Register - Alazeya River
  2. ^ Types of weathering
  3. ^ Lantzeff, George V., and Richard A. Pierce (1973). Eastward to Empire: Exploration and Conquest on the Russian Open Frontier, to 1750. Montreal: McGill-Queen's University Press.