BY:Azam Khan 7-B                .ppt (1)
What Is Rainwater Harvesting?RWH consists of simple systems to collect,convey, and store rainwater. Rainwater capture isa...
Why Rainwater Harvesting?Conserve and supplement existing waterresourcesSupply water at one of the lowest costspossible ...
Why Not RWH? Not applicable in all climate conditions over the  world Collected water quality might be affected by  exte...
Condensation               Let’s take a look at      Precipitation   The Water                                  Cycle     ...
Condensation                      Average Rainfall                              Average Annual andPrecipitation           ...
Storage • Storage devices may be either above or below ground • Different types include      Storage Tanks      Water Co...
Establishing the need in India…                                  A news                                  article says     ...
SO AS WE ALL ARE THE HUMANBEINGSAND ITS OUR RESPONSIBILTY TOSAVE OUR GROUND WATER LEVEL  AND MAKE THEM RECHARGE ATTIME TO ...
.ppt (10)
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Rainwaterharvesting

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Rainwaterharvesting

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

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