Yan Oya

Yan Oya
Physical characteristics
Source 
  locationRitigala
Mouth 
  location
Pulmoddai
  coordinates
08°55′04″N 81°00′58″E / 8.91778°N 81.01611°E / 8.91778; 81.01611
  elevation
Sea level
Length142 km (88 mi)
Discharge 
  maximum412 106Sq.m

The Yan Oya is the fifth-longest river of Sri Lanka. The 142 km (88 mi) long river's catchment area receives approximately 2,371 million cubic metres of rain per year, and approximately 17 percent of the water reaches the sea. The Yan Oya has a catchment area of 1,520 square kilometres.