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7. Mention two ways of harvesting rainwater

Answer»

There are two ways of harvesting rainwater1 Surface runoff harvesting:Rainwater flow away as surface runoff .This runoff could be caught and used for recharging aquifers by adopting appropriate methods.2 Roof top rainwater harvesting:In this system rainwater is collected from the building roof and store in tank or diverted into recharge wells. This system mainly constitutes of following sub components: CatchmentsTransportationFirst flushFilter"

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