sir , i need some ppt on the topic Rainwater harvesting and water saving technique for sustainable crop production in unirrigated areas for my credit seminar. ....etc

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how to make 3d model of rainwater harvesting system without using thermocol ....etc

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HARVESTED RAINWATER IN SEMI-ARID


M. K. Khandelwal1,S. K.Shakya2, R. H. Ghaghada3, and G. R. Sharma4


Abstract:
A situation specific computer programme incorporating hydraulic design and
hydrological criteria, set of different runoff coefficient, CN=88 for runoff generation and
USDA,SCS,CN method is incorporated to design parameters for water harvesting structures
at title watershed. The computer programme is used with average of the daily rainfall time
(1971-97) t ....etc

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Presented By:
B.ANUSHA PRIYA,II.B.Tech(CE)
M.BHAVYA, II.B.Tech(CE)
KSRM COLLEGE OF ENGINEERING
KADAPA


RAINWATER HARVESTING
Abstract:
The paper outlines rainwater harvesting is being frequently used these days, however, the concept of water harvesting is not new for India. Water harvesting techniques had been evolved and developed centuries ago.
Living creatures of the universe are made of five basic elements ....etc

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Rainwater harvesting from rooftop catchments



The application of an appropriate rainwater harvesting technology can make possible the utilization of rainwater as a valuable and, in many cases, necessary water resource. Rainwater harvesting has been practiced for more than 4, 000 years, and, in most developing countries, is becoming essential owing to the temporal and spatial variability of rainfall. Rainwater harvesting is necessary in areas having significant rainf ....etc

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Please send me the Rainwater harvesting ppt in tamil language for academic use;
S.Needhidasan
....etc

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seminar on rainwater harvesting
towseef iqbal
ce 1055
abstract
HW JKIS HYT7S HY NHIYIOS JKJ ....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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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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VIRGINIA RAINWATER HARVESTING MANUAL



The Trend
Today’s rainwater harvesting systems have evolved significantly and offer
technologically advanced components. However, harvesting rooftop rainwater is more
popular in European countries like Germany and England than the United States.
Adoption is equally low in Virginia, with most adopters being rural dwellers with failing
wells with no local municipal line and large corporations wishing to conserve wate ....etc

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