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Rainwater Harvesting
 

Rainwater Harvesting

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This is a presentation done by me for my class seminar :) . ...

This is a presentation done by me for my class seminar :) .
Topic is based on Rainwater harvesting (Basic).(Not for commercial purposes)
Much useful for students . It contains better graphics and attractive images to make studies for students easier.
Follow me for new presentations.
enjoy !!

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  • Why cant you share this beautiful presentation.
    you had made an effort..and if it spreads to the community..its good for the society and for the nation,, is nt it?

    i would like to get a copy of your PPT for the propaganda of rain water harvesting. if you dont mind, please share.

    muabhilash@gmail.com
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    Rainwater Harvesting Rainwater Harvesting Presentation Transcript

    • WHAT IS RAIN WATER HARVESTING?
    • •Due to rapid urbanization, infiltration of rain water into the sub-soil has decreased drastically and recharging of ground water has diminished.
    • ROOFTOP RAIN WATER HARVESTING Rooftop Rain Water Harvesting is the technique through which rain water is captured from the roof catchments and stored in reservoirs. Harvested rain water can be stored in sub-surface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks
    • • Storage of direct use • Recharging ground water aquifer - Recharging dug wells - Recharging pits - Recharging tube well
    • SURFACE RUNOFF HARVESTING • Harvesting of surface runoff and storage of the same into reservoirs such as water pans makes it available for use when required.
    • •In this method of collecting rainwater for irrigation, water flowing along the ground during the rains will be collected to a tank below the surface of the ground..
    • Dating back 200 years, tribes in northeast India have used bamboo drip irrigation as a means of bringing water to seasonal crops. This timeless and traditional technology uses locally available material while harnessing the forces of gravity. An assortment of holed bamboo shoots zig-zag downhill, diverting the natural flow of streams and springs across terraced cropland.
    • • BAWODI: • Traditional step wells are called vavadi in Gujarat, or baoris or bavadis in Rajasthan and northern India. • They were secular structures from which everyone could draw water. • Most of them are defunct today.
    • JOHADS • A johad is a crescent-shaped bund which is built across a sloping catchment to capture the surface water before it runs off. • Water accumulating in the johad percolates in the soil to augment the groundwater. The groundwater then can be used when there is no rainfall.
    • Kunds • Covered underground tank, developed primarily for tackling drinking water problems. • Usually constructed with local materials or cement, kunds were more prevalent in regions where groundwater is saline. • Before the onset of rains every year, meticulous care was taken to clean up the catchment of the kunds. • Cattle grazing and entry with shoes into the catchment area of the kunds was strictly prohibited. • The proximity of a kund to the house or village saved time and effort in searching for drinking water.
    • •MOHAMED NIHAL •HISHAM MOHAMED SHAREEF •SHAHID SHAMSUDDEEN •AJMAL T.A •SHIYAS M.K •ABHAY •AESHKAR •RAHEEL •SHAHAM •MUBARAK