Question

4 Important Ways Used in Rainwater Harvesting in India

Answer 1

Every year as the summer sets in, water becomes scarce across the length and breadth of India. Can you imagine living in an Indian city and not having a water connection at your home? Well, a Bengaluru scientist has just done that.

By rainwater harvesting to meet all his family’s requirement of water at his home, Mr. A R Shivakumar, a senior scientist in Karnataka State Council for Science and Technology has not paid for water bill for 22 years. His family uses harvested rainwater for bathing, washing and even drinking.

Answer 2

Hey friend Ur answer is

Storage of rainwater on the surface for future use

In this method, traditional water harvesting structures like artificial lakes, ponds etc. are used as such or after proper revival.

Recharge of ground water

The structures used for recharge of ground water are:

Hand Pumps:The water should pass through a filter bed before percolation in existing hand pumps. They are used for recharging aquifiers.

Pits:

They are (1-2) m wide and 3 m deep. They are also back filled with gravels and coarse sand to aid filtration before percolation to the ground. They are used for recharging a shallow aquifer.

Dug wells:

The rain water, after filtration, is put into existing dug wells for storage.

Rooftop and road rop collection of rainwater:

In urban areas, these methods are very useful to recharge aquifers.

Rooftop rainwater harvesting

It is a system of catching rainwater where it falls. In rooftop harvesting, the roof becomes the catchments, and the rainwater is collected from the roof of the house/building. It can either be stored in a tank or diverted to artificial recharge system. This method is less expensive and very effective and if implemented properly helps in augmenting the groundwater level of the area.

In India, rainwater harvesting has been in practice for more than 4000 years. It is basically a simple process of accumulating and storing of rainwater. Rainwater harvesting systems, since ancient times, has been applied as a supply for drinking water, water for irrigation, and water for livestock.

The systems are easy to construct from locally sourced inexpensive materials, and it has proved to be a success in most areas. The prime advantage of rainwater is that the quality of water is usually good, and it does not necessitate any treatment before consumption. Household rainfall catchments can significantly contribute where the source of drinking water is contaminated and scarce.




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