Rainwaterharvesting
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Rainwaterharvesting

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7th greade

7th greade

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Rainwaterharvesting Rainwaterharvesting Presentation Transcript

  • BY:Azam Khan 7-B .ppt (1)
  • 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)
  • 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)
  • 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)
  • Condensation Let’s take a look at Precipitation The Water Cycle Evapotranspiration EvaporationInfiltration Surface Runoff Consumption Surface Water Sea water intrusion .ppt (5)
  • 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)
  • 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)
  • 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)
  • SO AS WE ALL ARE THE HUMANBEINGSAND ITS OUR RESPONSIBILTY TOSAVE OUR GROUND WATER LEVEL AND MAKE THEM RECHARGE ATTIME TO TIME .ppt (9)
  • .ppt (10)