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The tank cascade system (Sinhala: එල්ලංගාව, romanized: ellaṅgāva) is an ancient irrigation system spanning the island of Sri Lanka. It is a network of thousands of small irrigation tanks (Sinhala: වැව, romanized: wewa) draining to large reservoirs that store rainwater and surface runoff for later use.
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 ...
Sri Lanka Freedom Party: 22 March 2015 – 12 August 2020 Ministry of Irrigation and Water Resources Management Chamal Rajapaksa: Sri Lanka Podujana Peramuna: 12 August 2020 - Gotabaya Rajapaksa: Ministry of Irrigation Roshan Ranasinghe: Sri Lanka Podujana Peramuna: 23 May 2022 - Present: Gotabaya Rajapaksa: Ministry of Irrigation
The Mahaweli Development program (Sinhala: මහවැලි සංවර්ධන වැඩසටහන) is known as the largest multipurpose national development program in the history of Sri Lanka and is also considered the keystone of the government's development program that was initiated in 1961.
In 1902 the Director of Irrigation H. T. S. Ward came up with proposals for building a new irrigation tank on the Kanakarayan Aru in northern Ceylon. [4] Work in the tank, which had a catchment area of 227 sq mi (588 km 2) and was to hold 26 ft (8 m) [a] of water, began in July 1902 [b] but was delayed by the World War I.
configuration of domestic rainwater harvesting system in Uganda. [1]Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off.. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer, or a reservoir with percolation, so that it seeps down and restores the ground w
While floodwater harvesting belongs to the accepted irrigation methods, rainwater harvesting is usually not considered as a form of irrigation. Rainwater harvesting is the collection of runoff water from roofs or unused land and the concentration of this.
Parakrama Samudra (or King Parakrama's sea or the Sea of King Parakrama) is a shallow reservoir (), consisting of five separate wewa (reservoirs) (thopa, dumbutulu, erabadu, bhu, kalahagala tanks) connected by narrow channels in Polonnaruwa, Sri Lanka.