Mahaweli River

This is the longest river in Sri Lanka and is 335 km long and originates in the central highlands of Sri Lanka, specifically from the Horton Plains near Kirigalpoththa, and flows through diverse landscapes including mountains, valleys, and low-lying plains before emptying into the Bay of Bengal.

Its drainage basin covers 10,448 km, which is nearly one-fifth of the island's total area, making it the largest river basin in the country.Read more