Longest Rivers in Sri Lanka

Name of River 

Length 

Mahaweli Ganga 

335 km

Aruvi Aru 

164 km

Kala Oya 

148 km

Kelani Ganga 

145 km

Yan Oya 

142 km

Deduru Oya 

142 km

Walawe Ganga 

138 km

Maduru Oya 

135 km

Maha Oya 

134 km

Kalu Ganga 

129 km

Kirindi Oya 

117 km

Kumbukkan Oya 

116 km

Menik Oya 

114 km

Gin Ganga 

113 km

Mi Oya 

109 km

Gal Oya 

108 km

 

Rivers of Sri Lanka


Rivers
Mahavali Rever (Ganga) is the largest of the 103 river basins found in Sri Lanka. It covers about 16% of the island's total area. The river itself has a winding course, rising about 50 km south of Kandy and flowing north then north-east to the sea near Trincomalee covering a distance of 320 km. It is the only perennial river to cross the dry Zone. Sri Lanka’s all perenial revers are called Ganga,while seasonal streams are called Oya in Sinhala or Aru in Tamil. A number of rivers have now been developed both for irrigation and power. The Victoria project on Mahavali Ganga is one of the largest in Asia.


 

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