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Rainwater harvesting is the accumulation and deposition of rainwater for reuse on-site, rather than allowing it to run off. Its uses include water for garden, water for livestock, water for irrigation, water for domestic use with proper treatment, and indoor heating for houses etc.

In many places the water collected is just redirected to a deep pit with percolation. The harvested water can be used as drinking water as well as for storage and other purpose like irrigation.

One method of rainwater harvesting is rooftop harvesting. With rooftop harvesting, most any surface — tiles, metal sheets, plastics, but not grass or palm leaf — can be used to intercept the flow of rainwater and provide a household with high-quality drinking water and year-round storage

Rainwater harvesting provides an independent water supply during regional water restrictions and in developed countries is often used to supplement the main supply. It provides water when there is a drought, can help mitigate flooding of low-lying areas, and reduces demand on wells which may enable ground water levels to be sustained. It also helps in the availability of potable water as rainwater is substantially free of salinity and other salts.

Set up system for Rain water Harvesting

Rainwater harvesting systems can be installed with minimal skills. The system should be sized to meet the water demand throughout the dry season since it must be big enough to support daily water consumption. Specifically, the rainfall capturing area such as a building roof must be large enough to maintain adequate flow. The water storage tank size should be large enough to contain the captured water.

water harvesting - haryali

rain water harvesting

New Approaches

Instead of using the roof for catchment, the Rain Saucer, which looks like an upside down umbrella, collects rain straight from the sky. This decreases the potential for contamination and makes potable water for developing countries a potential application. Other applications of this free standing rainwater collection approach are sustainable gardening and small plot farming.

Advantages of Rain water Harvest

• Rainwater harvesting will improve water supply, food production, and ultimately food security.
• Water insecure households or individuals in rural areas will benefit the most from rainwater harvesting systems.
• Since rainwater harvesting leads to water supply which leads to food security, this will greatly contribute to income generation.

Rain water harvesting is good for our environment and by this simple measure we can store the water and get ample benefit for all the human mass and livestock we have got in all over world. Water shortage will be no more a problem if one does use this technique. We are living in such world today that every drop of water save is Gold like precious.

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