Deduru Oya

Deduru Oya
Aerial view of the mouth of Deduru River, Chilaw.
Physical characteristics
Source 
 • locationKurunegala District
Mouth 
 • location
MAHO
 • coordinates
07°36′50″N 79°48′12″E / 7.61389°N 79.80333°E / 7.61389; 79.80333
 • elevation
Sea level
Length142 km (88 mi)
Basin size2,620 km2 (1,010 sq mi)

The Deduru Oya (Tamil: மாயவன் ஆறு) is the sixth-longest river of Sri Lanka. The 142 km (88 mi) long river runs across four provinces and five districts.