| Ulakhan-Botuobuya
Улахан-Ботуобуя
| |
|---|---|
Ulakhan-Botuobuya river and Tas-Yuryakh village Sentinel-2 image
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  Mouth location in Yakutia, Russia | |
| Location | |
| Country | Yakutia, Russia |
| Physical characteristics | |
| Source | |
| • location | Lena Plateau |
| • coordinates | 61°03′40″N 111°06′03″E / 61.06111°N 111.10083°E / 61.06111; 111.10083 |
| • elevation | 419 m (1,375 ft) |
| Mouth | Vilyuy |
• coordinates | 62°57′11″N 112°47′12″E / 62.95306°N 112.78667°E / 62.95306; 112.78667 |
• 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 Ulakhan-Botuobuya (Russian: Улахан-Ботуобуя or Большая Ботуобуя; "Big Botuobuya"; Yakut: Улахан Ботуобуйа, Ulaxan Botuobuya) 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]
The river flows across mostly uninhabited territory of Mirninsky District. Botuobuyinsky Nasleg is located in its middle course. 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]
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]
