What is rainwater harvesting? Describe the method of rainwater harvesting.

Rainwater harvesting is the collection of rainwater and storing it for future use. In this system, rainwater is collected from the rooftops by means of pipes into the storage tank for later use.

Some methods of rainwater harvesting are given below:
  1. Rooftop rainwater harvesting: In this system, the rainwater from the rooftop is collected in a storage tank, through pipes.
  2. Another method is a big pit dug near the house for collecting rainwater. This pit is filled with different layers of bricks, coarse gravel, sand, or granite pieces.

Extra information:

Rainwater harvesting structures are as follows:

handpumps, dug wells, rooftop collection of rainwater, filters, flushes, and pits.

The main purpose of rainwater harvesting is the preservation of clean water, as due to the increasing demand for clean water, its scarcity has increased and resulted in the depletion of groundwater.

This method is simple, cost-effective, and eco-friendly in nature.

The various advantages of water stored under the ground are:

(i) Groundwater does not evaporate like open bodies of water such as rivers and lakes.

(ii) Groundwater also helps in recharging wells by increasing their water level.

(iii) It also provides moisture for the vegetation over a vast area as roots can absorb the groundwater and provide for the growing crop.

(iv) As groundwater is well protected beneath the ground, it is protected from contamination by animals, and human wastes, and also prevents the breeding of insects.


Simply Easy Learning

Updated on: 20-Mar-2023


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