pros and cons of dam
DESCRIPTION
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.TRANSCRIPT
Pros and Cons of Dam
Takatoshi AKAI
JOCV/JICA
KWS Malindi Marine Park
Outline• Quiz
• Advantages of large dams
• Disadvantages of large dams
• Case Study: Kenya Power
Fire Power Land Thermal generationThermal Recycle
Nuclear Power Hydro Power Solar PowerTidal Current Power
Wind Power Wave Power Gas/Fire Power Bio mass power
Advantages of large dams 1/2
• It can produce cheap electricity (hydropower)
• It provides water for year round irrigation of cropland
Advantages of large dams 2/2
Downstream flooding is reduced
Reservoir is useful for recreation and fishing
Disadvantages of large dams
Enormous losses of water through evaporation
Especially in summer!
Mass of water will cause earthquakes
Danger of
collapse
flooded land destroys forests or cropland and displaces people
Expensive to build
Migration and spawning of some fish are disrupted, and killed by turbine.
Solution:Fish way
Case Study : Kenya Power produce electricity by nuclear
17 May 2012
They 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 planning to build nuclear power plant by 2015.
Other countries, such as South Africa and Nigeria also planning to build nuclear power plant.
Conclusion