The ancient Sri Lankan ‘tank cascades’ tackling drought Zinara Rathnayake Pinchal Weldurelage Siriwardene stands in front of a tank water cascade in Maeliya, Sri Lanka A 2,000-year-old Sri Lankan hydraulic system uses natural features to help harvest and store rainwater. Zinara Rathnayake By releasing water into irrigation canals, the tank cascades sustain the rice crop during the dry season Constructed …
