The Ulakhan-Botuobuya (Russian: Улахан-Ботуобуя or Большая Ботуобуя; "Big Botuobuya"; Yakut: Улахан Ботуобуйа) is a river in Yakutia (Sakha Republic), Russia. It is a right hand tributary of the Vilyuy, with a length of 459 kilometres (285 mi) and a drainage basin area of 17,500 square kilometres (6,800 sq mi).[1]

Ulakhan-Botuobuya Улахан-Ботуобуя
Mouth location in Yakutia, Russia
Location
Country	Yakutia, Russia
Physical characteristics
Source
• location	Lena Plateau
• coordinates	61°03′40″N 111°06′03″E
• elevation	419 m (1,375 ft)
Mouth	Vilyuy
• coordinates	62°57′11″N 112°47′12″E
• elevation	173 m (568 ft)
Length	459 km (285 mi)
Basin size	17,500 km2 (6,800 sq mi)
Discharge
• average	62 m3/s (2,200 cu ft/s)
Basin features
Progression	Vilyuy→ Lena→ Laptev Sea

The river flows across mostly uninhabited territory of Mirninsky District. There is a pontoon bridge of the A331 highway stretch between Mirny and Udachny crossing the river just before its confluence with the Vilyuy.[2]

Course

The Ulakhan-Botuobuya begins in the Lena Plateau at an elevation of 317 metres (1,040 ft). It flows first roughly eastwards and then northeastwards across the Vilyuy Plateau within a wide valley. Finally it bends again and heads northwards. The smaller Ochchuguy-Botuobuya runs roughly parallel to it further to the east. Finally the Ulakhan-Botuobuya joins the right bank of the Vilyuy 1,294 kilometres (804 mi) from its mouth, a few miles downstream of the Vilyuy Dam. The river freezes between October and late May.[3]

The largest tributary of the Ulakhan-Botuobuya is the 58 kilometres (36 mi) long Tas-Yuryakh (Таас-Юрэх) that joins it from the right.[4]

See also

• List of rivers of Russia

References

External links

• Fishing & Tourism in Yakutia

На других языках

[de] Ulachan-Botuobuja

[it] Ulachan-Botuobuja

[ru] Улахан-Ботуобуя