Question

describe any two techniques of roof crop rainwater harvesting? Where is the most common in practiced?

Answer 1

Rooftop rain water harvesting is the technique through which rain water is collected from the roof catchments and stored in reservoirs. Harvested rain water can be stored in sub surface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks.
In hilly terrains, rain water harvesting is preferred.