Rainfall and other forms of Precipitation

Tarun Bharat Sangh and Rajendar Singh started a massive campaign to spread awareness of traditional water harvesting structures in order to restore the water resources of arid Rajasthan. The aim was to popularize the use of such traditional structures across the country.

Climage Change, Indias perceptions, positions, policies and possibilities, written by Jyoti K Parikh and Kirit Parikh, Indira Gandhi

CMWSSB or Metro Water was established in 1978 and serves 180 sq kms of area and 5.5 million population.

The map shows that there is a decreasing trend of rainfall over most of peninsular India (barring Maharashtra) including the western part of the Gangetic plain and the north eastern states apart from Assam.

An increasing trend of rainfall has been observed for the eastern part of the Gangetic plain, Assam, Telengana and all coastal regions of the country.

This map shows the regions in the country that are regularly affected by floods.

The major flood prone regions are Punjab, Haryana, most of the Gangetic plains including Uttar Pradesh, North Bihar and West Bengal, the Brahmaputra valley, coastal Andhra Pradesh and Orissa, and South Gujarat.

Overview

Rainwater is amongst the purest water one can get distilled as it is by the sun. However, in a rainwater harvesting system, the water comes in contact with several surfaces, such as the roof or gutters. Its flow becomes possibly mixed with leaves or dust.

Overview

Rainwater harvesting is an option which has been adopted in many areas of the world where conventional water supply systems have failed to meet the needs of the people. Examples of RWH systems can be found in all the great civilisations throughout history.

Here's an eToolkit on rainwater harvesting that tells you all that you need to know to harvest rain successfully.

1) Overview: