What's the longest river in sri lanka?
- DianeLv 59 years agoFavorite Answer
Mahaweli river (Mahaweli Ganga)
It's 335 km long
Orginates from Hatton plateau
Mouth - Bay of Bengal
- 9 years ago
The Mahaweli River (Sinhala, literally "Great Sandy River") is a 335 km (208 mi) long river, ranking as the longest river in Sri Lanka.
ts drainage basin is the largest in the country, and covers almost one-fifth of the total area of the island.
The river reaches the Bay of Bengal on the southwestern side of Trincomalee Bay.Source(s): wikipedia