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Resource-use efficiency and environmental sustainability in the village tank cascade systems in the dry zone of Sri Lanka: An assessment using a bio-economic model
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.
Tanks and Reservoirs of Sri Lanka. Scale : 250k. ArcGIS Projected Coordinate System : SLD-Kandawala.prj. COD. 500+ Downloads. This dataset updates: Never. Use group message to communicate and collaborate with other members of your organisation.
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Sri Lanka’s tank cascades (a network of small tanks that store surface water) are one of the country’s greatest legacies from a remarkable hydraulic civilization, built by its ancient kings as a solution to the water scarcity in the country’s dry zone, over 2,000 years ago.
This country, at the core of the south east monsoon, has 80% of its territory covered by a dry zone prone to water scarcity. Its ancient kings built a sophisticated network of small tanks connected by canals to large reservoirs to collect and redistribute every single drop of rain the land received.
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