What is rain water harvesting ? Write two techniques of rain water harvesting ?

Dear Student,

The process by which rain water is collected and stored either to recharge the ground water or for use in the future is known as rainwater harvesting. In India rain water harvesting is an age old practice followed in many areas. Bawris are traditional architectural wonders that were built in the state of Rajasthan. They were used for collecting water. 

There are two ways of harvesting rainwater:

Surface runoff harvesting: In urban areas, rain water flows away from the surface is collected and used for various purposes.

Rooftop rain water harvesting: The rainwater on the roofs of the buildings is collected through canals that drain the water into ground reservoirs. This stored water is later utilised.

Regards