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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.
[7] [8] The waters were then diverted to Giant's Tank by a 12 mi (19 km) inlet channel (alawakkai). [1] [8] The tank had a catchment area of 38 sq mi (98 km 2). [1] The name Giant's Tank was the English translation of the local name for the tank - Sodayan Kattu Karai (giant built embankment). [1] [7] The tank is now known as Kattukarai Kulam in ...
The Giritale tank (Sinhala: ගිරිතලේ වැව) is a reservoir in Giritale and Minneriya in Sri Lanka. It was built by King Agbo II (608-618). It is believed that the tank was renovated by King Parakramabahu, the Great (1153–1186). [2] Later, it was subjected to renovation in 1905, 1942 and 1952 during colonial era. [1]
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 ...
Major irrigation schemes of Sri Lanka, as evident from the earliest written records in the Mahawansa, date back to the fourth century BCE (Parker, 1881; [1] Brohier, 1934). ). The purpose and determination in the construction of the irrigation systems are depicted by the words of Parakrama Bahu I, 1153–1186 CE: "Let not even a drop of rain water go to the sea without benefiting
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Topographic map of Sri Lanka. Sri Lanka, an island in South Asia shaped as a teardrop or a pear/mango, [168] lies on the Indian Plate, a major tectonic plate that was formerly part of the Indo-Australian Plate. [169] It is in the Indian Ocean southwest of the Bay of Bengal, between latitudes 5° and 10° N, and longitudes 79° and 82° E. [170]
The tank was built by Kulakkottan (604-614 AD) and further developed by King Parakramabahu the Great. [2] It was also known as Gangathala Vapi at the time. The reservoir has a catchment area of 216 km 2 (83 sq mi) and a capacity of 135 million cubic metres (4.8 × 10 9 cu ft).