Answer:
Different rainwater harvesting systems practised in India are: (i) In the semi-arid and arid regions of Rajasthan, all houses had underground tanks or tankas for storing drinking water. The tanks were connected to the sloping roofs of the houses through a pipe. Rain falling on the rooftops would travel down the pipe and was stored in these underground tankas. (ii) In the western Himalaya?s diversion channels called ?guls? or ?kuls? are built to utilize rainwater for agriculture. (iii) In arid and semi-arid regions of Rajasthan agricultural fields were converted into rain fed storage structures. Rainwater was allowed to stand and moisten the soil. These structures are called ?Khadins? and Johads?
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