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Rooftop rain water harvesting
Rain water is captured from the roof catchments and stored in reservoirs. Harvested rain water can be stored in sub-surface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks.

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Bamboo Dripping Irrigation System
An ingenious system of tapping of stream, springwater and rainwater, by using bamboo pipes to irrigate plantations.

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Rain water harvesting using virdas
Virdas are shallow wells about 3 to 5m deep, dug in low depressions called Jheels(tanks). Here, the inhabitants collect enough rainwater to ensure the availability of fresh water throughout the year.

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Rain water harvesting using different water bodies
Every village in Tamil Nadu should possess three water bodies: one for irrigation, one for cattle and an Oorani (pond) for drinking water. All of them should be rain fed.

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Rainwater Harvesting In Taanka(Tanks/Kunds)
Rainwater or surface run-off from rooftops, courtyards, or artificially prepared catchments flow into the tank through filtered inlets in
the wall of the pit.