Sri Lanka, which lies just south of India, has about 80% of its area covered by a dry zone prone to water scarcity. This meant that people would only be able to work on their land during the wet season.
However, around 300 BC, King Pandukabhaya was the first of many ancient kings to start building a network of water tanks for rain harvesting – a network that still exists today. Canals connect the tanks to large reservoirs. This creates a cascading system that uses the natural topography of the land to collect every drop of rain and distribute it. It is a wisdom drawn from ancient times to cope with climate change. Read More