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Presented By : Talha ArfiRegistration # 20090498
PRESENTATION SCHEMEWhy Dams?What is Dam?Types of DamsUses Of DamsDams-StatisticsImpacts of DamsConclusion
WHY DAMS?Water is essential for sustaining all life.Population movement and increase require water year round in remote ...
WHAT IS DAM?A structure to contain water.A solid barrier constructed at a suitable location across a river valley.Has m...
TYPES OF DAMS Gravity Dam       Arch DamButtress Dam     Embankment Dam
USES OF DAMSDirect Water UsageIndirect Uses
DIRECT WATER USAGEPrivate/DomesticCommercialIrrigationLivestockIndustrialMiningGeneral Public Supply
INDIRECT USESHydroelectric PowerFlood ControlTransportation
DAMS STATISTICSBy the end of the 20th century , there were 45,000 large  dams built in 150 countries .                   ...
IMPACTS OF DAMSEnvironmental ImpactsSociological ImpactsEconomical ImpactsEffects of Dams on Water Quality
Environmental ImpactsRiver PollutionErosionLoss of Aesthetic ViewAir PollutionNoise PollutionDust
SOCIOLOGICAL IMPACTSIndigenous People AffectedLoss of EcosystemsLoss of SpeciesDisplacement Of People
DISPLACEMENT OF PEOPLE BY         DAMS
ECONOMICAL IMPACTSAgriculturePower GenerationWater SupplyEmployment
EFFECTSON WATER QUALITYChange in TemperatureTurbidityDissolved Gas in the WaterEutrophication
CONCLUSIONSmall dams should be built instead of large damsCareful planning throughout the site selection , design and co...
QUESTION & ANSWERS SESSION
Dams or no dams97
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Dams or no dams97

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Dams or no dams97

  1. 1. Presented By : Talha ArfiRegistration # 20090498
  2. 2. PRESENTATION SCHEMEWhy Dams?What is Dam?Types of DamsUses Of DamsDams-StatisticsImpacts of DamsConclusion
  3. 3. WHY DAMS?Water is essential for sustaining all life.Population movement and increase require water year round in remote areas.Water collection and utilization is important.Ability to sustain dough and dry situations.
  4. 4. WHAT IS DAM?A structure to contain water.A solid barrier constructed at a suitable location across a river valley.Has mechanically engineered structure to direct and control flow of water and storage.
  5. 5. TYPES OF DAMS Gravity Dam Arch DamButtress Dam Embankment Dam
  6. 6. USES OF DAMSDirect Water UsageIndirect Uses
  7. 7. DIRECT WATER USAGEPrivate/DomesticCommercialIrrigationLivestockIndustrialMiningGeneral Public Supply
  8. 8. INDIRECT USESHydroelectric PowerFlood ControlTransportation
  9. 9. DAMS STATISTICSBy the end of the 20th century , there were 45,000 large dams built in 150 countries . International Commission on Large Dams (ICOLD)Displacement of 4 million people annually due to dams.Approximately 1,700 dams are being built , at the cost of about 50 million dollars per year.19% of electricity from hydro power-more than 50% in 63 countries.12% of all dams have a water supply function.75 countries have dams for flood control.Dam supports 30-40% of irrigated area and 12-16% of global food production. World Commission on Dams (WCD)
  10. 10. IMPACTS OF DAMSEnvironmental ImpactsSociological ImpactsEconomical ImpactsEffects of Dams on Water Quality
  11. 11. Environmental ImpactsRiver PollutionErosionLoss of Aesthetic ViewAir PollutionNoise PollutionDust
  12. 12. SOCIOLOGICAL IMPACTSIndigenous People AffectedLoss of EcosystemsLoss of SpeciesDisplacement Of People
  13. 13. DISPLACEMENT OF PEOPLE BY DAMS
  14. 14. ECONOMICAL IMPACTSAgriculturePower GenerationWater SupplyEmployment
  15. 15. EFFECTSON WATER QUALITYChange in TemperatureTurbidityDissolved Gas in the WaterEutrophication
  16. 16. CONCLUSIONSmall dams should be built instead of large damsCareful planning throughout the site selection , design and construction of dam is criticalSociological impacts should be considered along with the main objectives of water supply , power generation and flood controlEconomic incentives should be weighed against sociological impacts
  17. 17. QUESTION & ANSWERS SESSION

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