Gal Oya is a river in southeast Sri Lanka. Flowing about 108 km distance after originates in Madolsima, it is the 16th longest river in the country.
Gal Oya River G al Oya (Sinhala: ගල් ඔය; Tamil: கல் ஆறு) is a river in southeast Sri Lanka. Flowing about 108 km distance, it is the 16th longest river in the country (Withanage et al., 2014). It rises in Madolsima Hills at an elevation of 5000 ft. above mean sea level and flows towards the east coast of the country joining the Indian Ocean 16 km south of Kalmune (Withanage et al., 2014). It is situated between Mahaveli Basin to the west, Maduru Oya , Mundani Aru and Andalai Oya Basin to the north, Ambalam Oya, Pannal Oya, Karanda Oya, Heda Oya and Kumbukkan Oya Basin to the South and Indian Ocean to the east (Zahir & Kaleel, 2014). History The Gal Oya River is the main source feeding the Gal Oya scheme, the first major irrigation project undertaken by independent Sri Lanka that dammed the Gal Oya at Bintenne and other smaller rivers to create Senanayaka Samudraya , the largest reservoir in the country (Gunawardena, 2003; Withanage et al., 2014). In October 1937, the Inginiyagala Hydrometric station …
