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Irrigation is the artificial exploitation and distribution of water at project level aiming at application of water at field level to agricultural crops [1] in dry areas or in periods of scarce rainfall to assure or improve crop production. [2] This article discusses organizational forms and means of management of irrigation water at project level.
The irrigation works in ancient Sri Lanka were some of the most complex irrigation systems of the ancient world. 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.
Sri Lanka Freedom Party: 23 April 2010 - 9 January 2015 Mahinda Rajapaksa: Ministry of Irrigation and Water Resources Management Duminda Dissanayake: Sri Lanka Freedom Party: 12 January 2015 - 22 March 2015 Maithripala Sirisena: Ministry of Irrigation and Water Resources Management Gamini Vijith Vijithamuni Soysa: Sri Lanka Freedom Party
Sri Lanka irrigation engineers of this period were supposedly summoned or hired by other kingdoms for their expertise. [ 12 ] Nachchaduwa reservoir, located just outside Anuradhapura , is thought to be one of the 16 large reservoirs built by King Mahasena (276–303 CE).
The International Water Management Institute (IWMI) is a non-profit international water management research organisation under the One CGIAR [1] with its headquarters in Colombo, Sri Lanka, and offices across Africa and Asia. One CGIAR is a reformulation of CGIAR happend in the last few years.
The National Water Supply and Drainage Board (commonly abbreviated as NWSDB) is the National Organization responsible for the provision of safe drinking water and facilitating the provision of sanitation to the people in Sri Lanka. The organization had its beginning as a subdepartment under the Public Works Department for water supply and drainage.
Within this choice set, the preferred water tariff depends on multiple factors including: the goals of water pricing; the capacity of a water services supplier to allocate its costs, to price water, and to collect revenues from its customers; the price responsiveness of water consumers; and what is considered to be a fair or just water tariff. [4]
A tank cascade is a system of irrigation tanks in single or multiple chains where water from a higher tank flows into lower tanks. Examples of tank cascades include Sri Lanka's tank cascade system , [ 6 ] the Indian city of Bangalore's cascading lakes in the Varthur lake series, [ 7 ] and the Indian city of Madurai 's Vandiyur tank cascade system.