Olguydakh
Олгуйдах / Олгуйдаах
Panorama of the river
Olguydakh is located in Sakha Republic
Olguydakh
Mouth location in Yakutia, Russia
Location
Federal SubjectYakutia
Physical characteristics
Source 
 • locationLake Toymoku
Vilyuy Plateau
 • coordinates64°16′22″N 112°17′37″E / 64.27278°N 112.29361°E / 64.27278; 112.29361
 • elevation427 m (1,401 ft)
MouthAkhtaranda
 • coordinates
63°27′02″N 112°06′50″E / 63.45056°N 112.11389°E / 63.45056; 112.11389
 • elevation
250 m (820 ft)
Length191 km (119 mi)
Basin size5,450 km2 (2,100 sq mi)
Basin features
ProgressionAkhtaranda → Vilyuy→ Lena→ Laptev Sea

The Olguydakh (Russian: Олгуйдах; Yakut: Олгуйдаах), is a river in Yakutia (Sakha Republic), Russia. It is a left hand tributary of the Akhtaranda, part of the Vilyuy basin. The river is 191 kilometres (119 mi) long and has a drainage basin of 5,450 square kilometres (2,100 sq mi).[1]

The river flows across an uninhabited sector of Mirninsky District.[2][3] An area where mysterious events reportedly took place lies near the abandoned Olguydakh village on the banks of the lower course of the river.[4]

Course

The Olguydakh belongs to the upper stretch of the Vilyuy basin. It originates in the northeastern end of lake Toymoku (Yakut: Тоймоку) of the Vilyuy Plateau. The river heads first northwards for a short stretch, then it bends and heads roughly southeastwards and southwards, meandering slightly for the remainder of its course. There are many small lakes in its basin.[2] In its last stretch the Olguydakh turns to the southwest. Its mouth is at the confluence with the 227 km (141 mi) long Alymdya from the right to form the Akhtaranda, 75 km (47 mi) from its mouth in the Vilyuy Reservoir.[5] There is a bridge of the Aykhal—Chernyshevsky highway over the Olguydakh.[6]

Tributaries

The main tributary of the Olguydakh is the 80 kilometres (50 mi) long Aallaakh (Ааллаах) from the left. The river freezes in mid October and stays under ice until mid May.[1]

See also

References

  1. 1 2 "Река Олгуйдаах in the State Water Register of Russia". textual.ru (in Russian).
  2. 1 2 "Q-49-50 Topographic Chart (in Russian)". Retrieved 20 April 2023.
  3. ↑ "P-49-50 Topographic Chart (in Russian)". Retrieved 20 April 2023.
  4. ↑ Mysteries of Siberia's 'Valley of Death'
  5. ↑ Nature.ykt
  6. ↑ Google Earth
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