I want ppt on rain water harvesting to present it in school. ....etc

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I would like free animated Ppts/movies for increasing grade 4 children's environmental awareness ... more pictorial and less written slides would suit the age group. ....etc

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i want to know how to make a model of rain water harvesting?
hi i want a in formation to make a demo of rain water harvesting plz help me
....etc

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i need the traffic rules ppt for kids please send. ....etc

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Hi,
Pleasel send me the subject ppt or pdf file whichever you have.

Thanks

senthil ....etc

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how to wright seminar report on rain water harvesting? ....etc

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RAINWATER HARVESTING AND ARTIFICIAL RECHARGE TO GROUND WATER


WHAT IS RWH?
RWH refers to collection and storage of rainwater and also other activity such as

harvesting surface water extracting ground water , prevention of loss through

evaporation and seepage


PURPOSES OF RWH
Stored for ready use in containers ground or below ground
Charged into the ground for withdrawal later


BENEFITS OF RWH
Rainwater harvesting prevents flooding of lowlying areas
Rain water harves ....etc

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INTRODUCTION
Rainwater harvesting is the accumulating and storing, of rainwater for reuse, before it reaches the aquifer. It has been used to provide drinking water, water for livestock, water for irrigation, as well as other typical uses given to water. Rainwater collected from the roofs of houses, tents and local institutions, can make an important contribution to the availability of drinking water. Water collected from the ground, sometimes from areas which are especially prepared for this purpose, is called Storm ....etc

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Dear sir,...

I am sharath and I am a student, I want more information about rain water harvesting, as I have decided to prepare academic project report on this topic, so please help me?

Please do the above needful,..

Thank you,... ....etc

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Submitted By
DILEEP RAJ.K


ABSTRACT
Water is most abundant component on earth surface, constituting about 70% of the planet surface. Although some 70% of the Earth's surface is covered by water much of this is saline. However freshwater is available in almost all populated areas of the earth although it may be expensive to access the water and the supply may not always be sustainable. Only 4% of the available water is suitable for drinking purpose.
Throughout most of the world, the most common contamination ....etc

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