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A catchment site within the system is referred to as a wewa (වැව) in Sinhala, and this term is translated into English as "tank". [7]These tanks are connected in a series, referred to as a cascade, so that an ephemeral waterflow can be used, stored for future use, or conveyed elsewhere. [7]
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 ...
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
Kuttam Pokuna (twin ponds or pools) are well preserved old bathing tanks or ponds in Sri Lanka. This pair of ponds was built by the Sinhalese in the ancient Anuradhapura Kingdom. They form part of the Abhayagiri vihāra complex and are an example of the works in the field of hydrological engineering, architecture and art of the ancient Sinhalese.
Chena is the oldest cultivation method in Sri Lanka, it goes far back as more than 5,000 years.(Before the Anuradhapura Kingdom) [1] [2] it the dry zone, the recovery of a chena plot proceeds through various stages of succession, (active chena, abandoned chena, chena re-growth, scrub with pioneer three species, scrub with secondary tree species, secondary forest, secondary forest with primary ...
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 ...
Southwestern Sri Lanka rivers and streams is a freshwater ecoregion in Sri Lanka. The ecoregion is listed in Global 200, a list of ecoregions compiled by the World Wide Fund for Nature for conservation priorities. [1] The extensive network of rivers and streams of Sri Lanka drains a total of 103 distinct natural river basins. [2]
The 2011 UNEP Green Economy Report notes that "[i]mproved soil organic matter from the use of green manures, mulching, and recycling of crop residues and animal manure increases the water holding capacity of soils and their ability to absorb water during torrential rains", [35] which is a way to optimize the use of rainfall and irrigation ...