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Name the old-age water harvesting techniques/structures of Rajasthan still in use today.
Khadins, tanks and nadis are the old-age water harvesting techniques/structures of Rajasthan still in use today. Khadins is a traditional way of harvesting rainwater and it is mainly followed by people of Rajasthan. These are very long earthen embankments which are built across the lower edge of the sloping farmlands which are called bund. Rainwater flows down the slopes and fills the bunds to form a reservoir. Pathways are made from bund to nearby well which are mainly dug behind the bund where water seeps and fills the wells.