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  • 1. .ppt (1)
    PRESENTATION ON
    RAIN WATER HARVESTING
    BY:
    VAIBHAV SHARMA
  • 2. .ppt (2)
    What Is Rainwater Harvesting?
    • RWH consists of simple systems to collect, convey, and store rainwater. Rainwater capture is accomplished primarily from roof-top, surface runoff, and other surfaces.
    • 3. RWH either captures stored rainwater for direct use (irrigation, production, washing, drinking water, etc.) or is recharged into the local ground water and is call artificial recharge.
  • .ppt (3)
    Why Rainwater Harvesting?
    • Conserve and supplement existing water resources
    • 4. Supply water at one of the lowest costs possible for a supplemental supply source.
    • 5. Commitment as a corporate citizen - showcasing environmental concerns
    • 6. Replenishing local ground water, where lowering of water tables has occured
  • .ppt (4)
    Why Not RWH?
    • Not applicable in all climate conditions over the world
    • 7. Collected water quality might be affected by external factors
    • 8. Performance seriously affected by climate fluctuations that sometimes are hard to predict
    • 9. Collected rainwater can be degraded with the inclusion of waste water runoff
  • .ppt (5)
    Condensation
    Let’s take a look at
    The Water Cycle
    Precipitation
    Evapotranspiration
    Evaporation
    Infiltration
    Surface Runoff
    Surface Water
    Consumption
    Groundwater
    Sea water intrusion
  • 10. .ppt (6)
    Condensation
    Average Rainfall
    Average Annual and Monthly Precipitation – Average rainfall over one year period and monthly intervals and usually based on global atmosphere
    Precipitation
    Consumption
    Groundwater
    Surface Water
  • 11. .ppt (7)
    Storage
    • Storage devices may be either above or below ground
    • 12. Different types include
    • 13. Storage Tanks
    • 14. Water Containers
    • 15. Lagoons or Lined Ponds
    • 16. Size based on rainfall pattern, demand, budget and area
  • .ppt (8)
    Establishing the need in India…
    A news article says that ground water levels in New Delhi are falling and RWH will become mandatory.
  • 17. .ppt (9)
    SO AS WE ALL ARE THE HUMAN BEINGS
    AND ITS OUR RESPONSIBILTY TO SAVE OUR GROUND WATER LEVEL
    AND MAKE THEM RECHARGE AT TIME TO TIME
    BY RAIN WATER HARVESTING
  • 18. .ppt (10)