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During the construction work of Headrace tunnel. The 4.5–5.2 m (14.8–17.1 ft) diameter, 12.89 km (8.0 mi) long Upper Kotmale Tunnel, the longest excavated tunnel in Sri Lanka, will be used to deliver the water to the powerhouse.
The Moragolla Dam is a planned hydroelectric dam in Moragolla, Sri Lanka.The dam is to be 35 m (115 ft) high and is planned to create the 1,980,000 m 3 (70,000,000 cu ft) Moragolla Reservoir with a maximum supply level at 548 m (1,798 ft) MSL. [1]
The Kotmale Dam is a large hydroelectric and irrigation dam in Kotmale, Sri Lanka. The dam generates power from three 67 MW turbines, with a total installed capacity to 201 MW, making it the second largest hydroelectric power station in Sri Lanka. Construction on the dam began in August 1979 and was ceremonially completed in February 1985. [1]
The reservoir's full supply level is 460 metres (1,510 ft) above main sea level, and the reservoir spreads 8 kilometres (5.0 mi) upstream at this level. The reservoir is u-shaped. [5] It covers an area of 897 ha. However, with the water leakage the water level was reduced to 430 metres (1,410 ft). [2] It is one of the largest reservoirs in Sri ...
Sri Lanka is pockmarked with many irrigation dams, with its water resource distributed across nearly the entirety of the island for agricultural purposes via artificial canals and streams. Utilization of hydro resources for agricultural production dates back to the pre-Colonial era , with the current crop production now largely dependent on ...
The earliest examples of irrigation works in Sri Lanka date from about 430 BCE, during the reign of King Pandukabhaya, and were under continuous development for the next thousand years. In addition to constructing underground canals , the Sinhalese were the first to build completely artificial reservoirs to store water , referred to as tanks ...
After the construction of Kala Wewa was completed, the king built another tank called Balalu Wewa (Sinhala: බලලු වැව) nearby and connected the two tanks together, with the resulting combined tank being the largest in Sri Lanka. [2] King Mahinda II, who ruled the country from 777 to 797 CE, expanded the tank further.
The maiden water release of the dam was in January 2017. [3] Morgahakanda/Kaluganga project is the last of the Great Mahaveli project [ 4 ] The larger combined project involves the construction of the Moragahakanda Dam and Reservoir, along with the separate Kalu Ganga Dam and Reservoir , for irrigation and power generation purposes.