Nachchaduwa wewa (Also known as Mahadaragala Reservoir) is a

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

near Thammannakulama, Sri Lanka. The reservoir is used to store water brings from

Kala Wewa Kala Wewa ( Sinhala:කලා වැව) built by the King Datusena in 460 A.D, is a twin reservoir complex (Kala Wewa & Balalu Wewa) which has a capacity of 123 million cubic meters. This reservoir complex has facilitated with a stone made spil ...

through Yoda Ela channel. The reservoir was severely damaged in 1957 flood and the restoration of the tank was completed in 1958.

History

This tank is believed to be one of the sixteen large reservoirs built by

King Mahasen Mahasena, also known in some records as Mahasen, was a king of Sri Lanka who ruled the country from 277 to 304 CE. He started the construction of large tanks or reservoirs in Sri Lanka, and built sixteen such tanks. After becoming king, Mahasena ...

(277 – 304). It is said that he built this tank to supply water to the city and to safeguard the city from floods. However the chronicle Mahavamsa have made a reference to this reservoir during the time of King Moggallana II (540 - 560).

References

Reservoirs in Sri Lanka Lakes of Sri Lanka {{SriLanka-geo-stub