Kala Oya is a river in northwest Sri Lanka. It originates at Dambulla, Kandalama mountains and enters the Indian Ocean at Gangewadiya in Wilpattu Park
Kala Oya River K ala Oya (Sinhala: කලා ඔය; Tamil: கலா ஓயா) is a river in northwest Sri Lanka. It originates at Dambulla, Kandalama mountains at an elevation of around 870 metres Above the Mean Sea Level (Iresh, 2020; Iresh et al, 2021). In the lower reaches, a few tributaries join the river and it enters into the Indian Ocean at Gangewadiya belonging to the Wilpattu National Park (Iresh et al, 2021). It is the third-longest river in the country (Iresh, 2020). History King Vankanasika Tissa (111-114 A.D.) is said to have built the Mahamangala Viharaya temple on the bank of the Gona-nadi [(present Kala Oya ) Nicholas, 1963]. King Datusena (459-477 A.D.) built Kala Wewa by damming the waters of Kala Oya (Arumugam, 1969). The River Basin The Kala Oya River basin extending in an area of about 2,870 km 2 is the 3rd largest basin among the named 103 major river basins in Sri Lanka (Iresh et al, 2021; Perera et al., 2018; Vidanage et al., 2005; Young et al., 2009). The upper part of the basin falls within the Mata…
