| Oldzho Yakut:Олдьо | |
|---|---|
  Location in theSakha Republic, Russia | |
| Location | |
| Country | Russia |
| Physical characteristics | |
| Source | |
| • location | Khadaranya Range |
| • coordinates | 68°38′35″N138°08′38″E / 68.64306°N 138.14389°E /68.64306; 138.14389 |
| • elevation | 1,100 m (3,600 ft) |
| Mouth | Yana River |
• coordinates | 68°25′13″N134°54′25″E / 68.42028°N 134.90694°E /68.42028; 134.90694 |
• elevation | 102 m (335 ft) |
| Length | 330 km (210 mi) |
| Basin size | 16,100 km2 (6,200 sq mi) |
| Discharge | |
| • average | 110 m3/s (3,900 cu ft/s) |
| Basin features | |
| Progression | Yana→Laptev Sea |
TheOldzho (Russian:Ольджо;Yakut:Олдьо,Olco), also known as Oldyo (Ольдё) or Olduo (Олдьуо), is a river in theVerkhoyansk District,Sakha Republic,Russia. It is a righttributary of theYana.
The length of the river is 330 kilometres (210 mi) and the area of its drainage basin 16,100 square kilometres (6,200 sq mi).[1] There are no settlements near the river. The nearest city isBatagay, and the nearest airfieldBatagay Airport.[2]
Grayling andlenok are found in the waters of the river.[3]
River Oldzho originates in a lake in the northeast of theKhadaranya Range, located in a valley formed by the northeastern slopes of the Khadaranya and the southern end of theBurkat Range. The river flows first northwestwards, then makes a wide bend at the northern end of the Khadaranya Range and flows roughly southwestwards. After passing the northwestern end of theYmiysky Range its course forms meanders and the Oldzo is joined on its left side by theNenneli (Неннели), its largest tributary.[2] Finally it reaches the right bank of the Yana 587 km (365 mi) from its mouth and about 30 km (19 mi) downstream from the confluence of theAdycha.
Atrail goes along the Oldzho valley that joins the middle Yana basin with the valley of theIndigirka. The Oldzho is frozen between October and May.[4]
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