How is rainwater harvesting done? Explain.

Rainwater harvesting is done by

1. Storing rainwater and later using it in dry season - Harvesting of rainwater is done by storing it in tanks, ponds and Dams. The stored water is used directly for irrigation and other domestic purposes.
2. Recharging of groundwater - It is done by Rooftop rainwater Harvesting Method. Rainwater can be collected over the rooftops and can be channelized through small PVC pipes into the underground pits, sump, wells or borewells.