Question

what are the various methods ways for rain water harvesting

Answer 1

we can  put a things like bucket ,mug etc. on a terrace that conain water .

Answer 2

Rain water is the purest form of water and we should conserve it because it is free of coast and very useful for us in many ways. we can conserve rain water by different methods. :- 
1) Roof top rainwater harvesting.
2) By taking mug and tub we can conserve rain water.