Recharge wells can pick storm water and send it to the aquifer. This can mitigate urban flooding, enhance ground water levels and make available well water for supplemental purpose. Depending on lithology conditions , ground water levels and recharge rates, these recharge wells need to be designed. In Bangalore a 3 feet diameter and 20 feet deep well works in most places and can cover 250 square metre of plot area including roof area well.
More info: www.rainwaterclub.org
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