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The main concrete dam measures approximately 350 m (1,150 ft) and creates the Rajanganaya Reservoir, which has a catchment area of 76,863.60 hectares (189,934.1 acres) and a total storage capacity of 100.37 million cubic metres (3,545 × 10 ^ 6 cu ft).
The Victoria Dam on 15 April 2011, three days after its 26th anniversary of opening Randenigala Dam in 2013 Upstream view of the Kotmale Dam Open spillways of the Rajanganaya Dam. Irrigation dams with a length and height of more than 100 m (330 ft) and 10 m (33 ft) are listed, including all the state-run hydroelectric power stations.
Parakrama Samudra, an ancient reservoir in Polonnaruwa. Moat surrounding Sigiriya.. The irrigation works in ancient Sri Lanka were some of the most complex irrigation systems of the ancient world.
Kala Wewa (Sinhala:කලා වැව), built by the King Datusena in 460 CE, is a reservoir complex consisting of two reservoirs, Kala Wewa and Balalu Wewa. It has the capacity to store 123 million cubic meters of water.
The Moragahakanda Dam, is a 65 m (213 ft) high gravity dam. The dam created the Moragahakanda Reservoir, which has an active storage capacity of 521,000,000 m 3 (1.84 × 10 10 cu ft) of water, [12] at a surface elevation of 185 m (607 ft). [13] Two additional embankment saddle dams will also be built to contain the Moragahakanda Reservoir.
The Kehelgamu Oya (translated into Kehelgamu River from Sinhala) is a major upstream tributary of the Kelani River.The tributary measures 50 km (31 mi) in length, originating in the hills of the Horton Plains National Park, before passing through the Castlereigh Reservoir.
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