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UNDER THE GUIDANCE OF Ms.D.TARANGINI
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Rain Water Harvesting System & Management
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Contents : DEFINITION PRINCIPLE USE OBJECTIVES PROCEDURE
INVOLVED LOCATION OF STUDY
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What is rain water harvesting ? It is the activity of direct
collection of rain water and other activities aimed at harvesting
surface and ground water. It is the activity of direct collection
of rain water and other activities aimed at harvesting surface and
ground water. It also includes prevention of losses through
evaporation and seepage and all other hydrological and engineering
interventions. It also includes prevention of losses through
evaporation and seepage and all other hydrological and engineering
interventions. Rain water can be stored for direct use or can be
recharged into the ground water aquifer Rain water can be stored
for direct use or can be recharged into the ground water
aquifer
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RAIN WATER HARVESTING?. RAIN WATER HARVESTING?. Rain Water
Harvesting RWH- process of collecting, conveying & storing
water from rainfall in an area for beneficial use. Storage in
tanks, reservoirs, underground storage- groundwater
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PRINCIPLE:
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Why Rain water be harvested ? To conserve & augment the
storage of ground water To reduce water table depletion To improve
the quality of ground water To arrest sea water intrusion in
coastal areas To avoid flood & water stagnation in urban
areas
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OBJECTIVES : Economics Reduces water bills Reduced water demand
- water supply utility saves money on treatment and pumping Reduces
cost of infrastructure necessary for water supply Environment
Energy saved no pumping of water to our homes If water is hard,
adding soft rainwater improves water quality Improves groundwater
situation Reduces demand for water at city/village level Other
Simple, cost-effective, easy to construct and maintain Viable in
urban and rural areas, slums, low income housing, apartments Can
offset the need for multipurpose river projects
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HOW? The concept is simple Collect Store and use Recharge
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RAIN WATER HARVESTING Rain Roof Top Filtration or Recharge to
ground water Storage Rooftop Water
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Rainwater harvesting today Collection (Catchment) Flat /
sloping roofs Leaf and grit filter, First flush device
Transportation: Downtake pipes Storage in tanks Recharge into open
wells / borewells / percolation pits / trenches