Question

What is the method of rainwater harvesting which can be adopted by individual house owners?
Options
A.Construction of recharge trenches
B.On channel storage of water
C.Creation of new water bodies
D.Roof-top rain water harvesting

Answer 1

Hint: The ecosystem's most valuable, necessary, and abiotic portion is water. Today, we are all on the verge of water shortages, owing mostly to a lack of water management and contamination of water bodies. So, instead of wasting a drop of water, let us begin conserving it for future use.

Complete answer:
Rainwater harvesting is a basic method or equipment that collects, stores, conveys, and purifies rainwater that flows off of rooftops, parks, highways, open fields, and other surfaces for later use.
Rainwater harvesting is the practise of collecting and storing rainwater using artificially engineered structures that flow off of naturally or man-made catchment areas such as rooftops, compounds, rock surfaces, hill slopes, and artificially repaired impervious or semi-pervious ground surfaces.
The roof becomes the catchment of rooftop harvesting, and rainwater is obtained from the house's roof. It may be contained in a tank or redirected to a grid for artificial recharging. This solution is less costly and very reliable, and if correctly applied, it will help augment the area's groundwater level. Rooftop Rainwater Harvesting can be achieved on any house, big or small, as long as each of the following elements are used in the RWH system. The catchment area, storage, flushing, and filter media (sand gravel filter/charcoal filter) are the key components of the RWH scheme. Rooftop rainwater may be gathered and deposited for immediate use or recharged into the groundwater system.

Hence, option D is correct.

Note:
Rainwater harvesting is the practise of collecting and storing rainwater using artificially engineered structures that flow off of naturally or man-made catchment areas such as rooftops, compounds, rock surfaces, hill slopes, and artificially repaired impervious or semi-pervious ground surfaces.