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Rain Water Harvesting By Laxmi And Spoorti
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Rain Water Harvesting By Laxmi And Spoorti

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  • 1. Rain wateRRain wateR haRvestinghaRvesting By,By, Laxmi.vakkundLaxmi.vakkund && Spoorti.jamagoudSpoorti.jamagoud
  • 2. contentscontents •introductionintroduction •BenefitSBenefitS •methodSmethodS •WaterShed managementWaterShed management
  • 3. IntroductionIntroduction • Def’n:Def’n: It’s the process of collectingIt’s the process of collecting and storing rain water in a scientificand storing rain water in a scientific && Controlled manner for future use.Controlled manner for future use. It involves collection of rainIt involves collection of rain water from house rooftops , throughwater from house rooftops , through gutters ,its filtration and subsequentgutters ,its filtration and subsequent Storage in a reservoir.Storage in a reservoir.
  • 4. BENEFITSBENEFITS • Improves ground water availability and quality.Improves ground water availability and quality. • Reduces the effect of drought and flood.Reduces the effect of drought and flood. • Soil erosion will be reduced.Soil erosion will be reduced. • Immediate availability of fresh water.Immediate availability of fresh water. • Environment friendly for better livingEnvironment friendly for better living
  • 5. METHODSMETHODS • THERE ARE 3 METHODS OF RAINTHERE ARE 3 METHODS OF RAIN WATER HARVESTING..WATER HARVESTING.. ROOFTOP HARVESTING.ROOFTOP HARVESTING. OPEN SPACE HARVESTING.OPEN SPACE HARVESTING. GROUND WATER RE-CHARGE.GROUND WATER RE-CHARGE.
  • 6. ROOFTOP HARVESTINGROOFTOP HARVESTING • DEF’N:DEF’N: Rain water harvesting fromRain water harvesting from individual house roofs or roofs of flatsindividual house roofs or roofs of flats and complexes is called rooftopand complexes is called rooftop harvestingharvesting..
  • 7. OPEN SPACE HARVESTINGOPEN SPACE HARVESTING RainwaterRainwater harvestingharvesting undertaken inundertaken in parks &parks & open spaces byopen spaces by creatingcreating waterwater harvesting pondsharvesting ponds is defined asis defined as open spaceopen space
  • 8. STEPS INVOLVED IN OPENSTEPS INVOLVED IN OPEN SPACE HARVESTINGSPACE HARVESTING • In large parks, storage of rain water inIn large parks, storage of rain water in small ponds is possible. This allows groundsmall ponds is possible. This allows ground water recharge.water recharge. • Rainwater run-off from open space & pavedRainwater run-off from open space & paved areas can be stored in underground sumps.areas can be stored in underground sumps. • In the cities, rainwater run-off hasIn the cities, rainwater run-off has increased & ground water recharge hasincreased & ground water recharge has decreased due to asphalted roads &decreased due to asphalted roads & pavements.pavements.
  • 9. GROUND WATERGROUND WATER RE-CHARGERE-CHARGE • It is a method ofIt is a method of conservingconserving rainwater byrainwater by putting it back intoputting it back into the soil to increasethe soil to increase the decliningthe declining ground water tableground water table..
  • 10. •Before recharging, the water isBefore recharging, the water is filtered by passing it through afiltered by passing it through a filtration bed of sand & brokenfiltration bed of sand & broken bricks.bricks. •Rainwater can be harvested fromRainwater can be harvested from the roof tops or open spaces.Thethe roof tops or open spaces.The harvested water is directed intoharvested water is directed into the ground for recharging.the ground for recharging. •The filtered water is then directedThe filtered water is then directed into an open well or borewellinto an open well or borewell..
  • 11. WATERSHEDWATERSHED MANAGEMENTMANAGEMENT Watershed is anWatershed is an area of land fromarea of land from which rainwaterwhich rainwater drains out to adrains out to a common pointcommon point....
  • 12. TYPES OF WATERSHEDTYPES OF WATERSHED MANAGEMENTMANAGEMENT 11 MICRO-WATERSHEDMICRO-WATERSHED 22 SUB-WATERSHEDSUB-WATERSHED 33 MACRO-WATER-SHEDMACRO-WATER-SHED • Micro-watershed join together to form a sub-Micro-watershed join together to form a sub- watershed.watershed. • Many Sub-watershed make up a macro-Many Sub-watershed make up a macro- watershed.watershed. • Macro-watershed finally flow into the oceans.Macro-watershed finally flow into the oceans.
  • 13. AIMS OF WATERSHEDAIMS OF WATERSHED PROGRAMMESPROGRAMMES • To utilize the natural resources efficiently.To utilize the natural resources efficiently. • To maintain environmental and ecologicalTo maintain environmental and ecological balance.balance. • To increase the vegetative cover.To increase the vegetative cover. • To use the land to its optimum capabilityTo use the land to its optimum capability..