King Vasabha(65AD) Diverted the Amban Ganga at Elahera. The Anicut at Hattota Amuna on Kalu Ganga, a tributary of Amban Ganga was constructed by Aggabodhi II in 608 AD, to supplement the waters of Amban Ganga along the Elahera canal to feed a small reservoir build at Minneriya. The King Mahasen in 275 AD, expanded and extended the canal to Minneriya and to Kaudullla Wewa, the tanks build by him. In 604 AD, King Aggabodhi II, further extended the canal to Giritale and Kantalai to augment the tanks he built.

On the Main Mahaweli, King Datusena in (459AD) built the Yakundewa anicut to divert water to irrigate the left bank fields. This was extended by King Aggabodhi II, and in 575 AD, it was further extended by King Sena II to Angamedilla. The Angamedilla canal was built by King Upatissa in 368 AD, to feed Topawewa.built by him. This canal was further extended and developed by King Parakramabahu I in 1153 AD to feed the Parakrama Samudraya, Topawewa and Nikawewa. He connected the Giritale to Prarakrama Samudraya by a canal. The excellent construction of the ancient period the Kalinga anicut on Mahaweli is credited to King Mahasen (275 AD), and he built the Right Bank (RB) canal called Gotami Ela, which carried waters to Maduru oya. The LB canal of the Kalinga Anicut carried water to across Amban Ganga below Parakrama Samudra almost up to KaudullaThe construction of this is credited to the King Datusena (459 AD), and it served the fields of Tampalgamam Bay in Trincomalee. Another canal took water to the Allai Tank. Hence the Kalinga Ela, Gothami Ela, Allai Channels irrigated the entire Mahaweli Delta from the ancient times in addition to the Elahera and Angamedilla canals which were restored in the last century.

Angamedilla Related references