Pros and cons of dam

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I am working at KWS in Malindi, Kenya, as a teacher of environment.
In this presentation, good point and bad point of using dam to create electricity, and how people trying to save biodiversity, such as migration fish are discussed.

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Pros and cons of dam

  1. 1. Pros and Cons of Dam Takatoshi AKAI JOCV/JICA KWS Malindi Marine Park
  2. 2. Outline• Quiz• Advantages of large dams• Disadvantages of large dams• Case Study: Kenya Power
  3. 3. Fire Power Thermal Recycle Land Thermal generationNuclear Power Hydro Power Tidal Current Power Solar Power Wind Power Wave Power Gas/Fire Power Bio mass power
  4. 4. Advantages of large dams 1/2• It can produce cheap electricity (hydropower)• It provides water for year round irrigation of cropland
  5. 5. Advantages of large dams 2/2 Downstream flooding is reducedReservoir is usefulfor recreationand fishing
  6. 6. Disadvantages of large dams Enormous losses of water through evaporationEspecially in summer!
  7. 7. Mass of water willcause earthquakes Expensive to buildDanger ofcollapse flooded land destroys forests or cropland and displaces people
  8. 8. Migration and spawningof some fish are disrupted,and killed by turbine. Solution: Fish way
  9. 9. Case Study : Kenya Power produce electricity by nuclear 17 May 2012They are planning to build 1 million KW class nuclear power station.According to Energy Regulation Committee ( ERC ) , Kenya is able to produce 1.5 million KW.However, ERC forecast, Kenya will require 1.8 million KW by 2016.Kenya is 3rd country, which planningto build nuclear power plant by 2015.Other countries, such as South Africaand Nigeria also planning to buildnuclear power plant.
  10. 10. Conclusion

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