Sellyakh

Sellyakh
Сыалах / Сиэллээх
Course of the Sellyakh ONC map section
Mouth location in Yakutia, Russia
Location
CountryRussia
Physical characteristics
Source 
  coordinates70°48′01″N 140°41′48″E / 70.80028°N 140.69667°E / 70.80028; 140.69667
  elevation7 metres (23 ft)
MouthLaptev Sea
  location
Sellyakh Bay
  coordinates
71°28′53″N 140°01′42″E / 71.48139°N 140.02833°E / 71.48139; 140.02833
  elevation
0 metres (0 ft)
Length352 km (219 mi)
Basin size8,700 km2 (3,400 sq mi)

The Sellyakh (Russian: Сыалах or Сельлях; Yakut: Сиэллээх, Sielleex) is a river in the Sakha Republic (Yakutia), Russia. It has a length of 352 kilometres (219 mi) —counting the length of the Ilin-Sellyakh (Илин-Сыалаах) at its head— and a drainage basin area of 8,700 square kilometres (3,400 sq mi).

The river flows north of the Arctic Circle, across territories of the Ust-Yansky District marked by permafrost. The lower course of the river belongs to the Yana Delta Ramsar wetland site. There are no settlements along its course. The nearest town is Tumat.