Deduru Oya is a river in northwest Sri Lanka. Originates in the Central Province, it enters into the Indian Ocean at Chilaw. The river is 115 km long.
Deduru Oya River D eduru Oya (Sinhala: දැදුරු ඔය; Tamil: தெதரு ஆறு) is a river in northwest Sri Lanka. It originates from the foothills of Matale in Central Province, flows across the Kurunegala and Puttalam districts and enters into the Indian Ocean at Chilaw (Arumugam, 1969; Somaratne et al., 2003). The river is 115 km long and mainly comprises 8 tributaries (Somaratne et al., 2003; Wickramaarachchi, 2004). They include Ratwila Ela, Kospothu Oya, and Dik Oya in the upper basin; Maguru Oya, Hakwatuna Oya, and Kimbulwana Oya in the middle basin; and Kolamuna Oya, Thalagala Ela in the lower basin (Mishra et al., 2017). It is one of the three river basins which is situated more than one monsoonal zone (Arumugam, 1969). History The ancient name used in Pali chronicles to identify the Deduru Oya river was Jajjara-nadi (Nicholas, 1963). Parakramabahu I (reigned: 1153-1186 A.D.), in developing the resources of his principality of Dakkhinadesa , harnessed the waters of Jajjara-nadi by damming the river at three …
