Describe how the rainwater harvesting is carried out in semi-arid and arid parts of Rajasthan.

Rainwater harvesting is the accumulation and storage of rainwater for reuse on-site, rather than allowing it to run off. It is one of the simplest and oldest methods of self-supply of water. Its water is used for gardens, livestock, irrigation and domestic use. It is also used for drinking water and groundwater recharge.

Rainwater harvesting is carried out in their own manner in semi-arid and arid regions of Rajasthan. Houses have traditionally constructed underground tanks for storing rainwater which they use for drinking and other purposes. Tank was built in the basement and rainwater from the rooftop was collected in the tanks. It was built inside the main house giving a cooling effect to the rooms in the summer. It can be as large as big rooms.