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Rain Water Harvesting (4. Arid Regions (1. Agricultural fields were…
Rain Water Harvesting
4. Arid Regions
1. Agricultural fields were converted to rain water storage structures that allowed the water to stand and moisten the soil. Eg - Khadins in Jaisalmer & Johads in other parts of Rajasthan
2. In Bikaner, Phalodi & Barmer in Rajasthan all houses had underground tanks or tankas, as large as a big room, for storing drinking water
The tankas were part of the roof top rainwater harvesting system and were built inside the main house or the courtyard
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Usually the first spell of rain was not collected as this would clean the roofs and the pipes. Rain water from subsequent showers were collected
Rain water can be stored in tankas till the next rainfall making it a reliable source of drinking water
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Unfortunately, the practice of roof top rain water harvesting is on the decline in Rajasthan, as plenty of water is available through the perennial Rajasthan Channel
1. Hilly Areas
1. In hilly & mountainous regions, people built diversion channels like the guls or kuls of Western Himalayas for agriculture
2. Flood Plains
In the flood plains of Bengal, people built inundation channels to irrigate their fields
Why?
As dams have many disadvantages, water harvesting is a viable alternative - it is economical & environment friendly
3. Remote Villages
In Gendathur, a remote backward village in Mysore, villagers have installed rainwater harvesting in the roof tops to meet their water needs
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