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IB Geography: Drainage Basins: River Managemen: Dams
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IB Geography: Drainage Basins: River Managemen: Dams

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http://www.geographyalltheway.com/ib_geography/ib_drainage_basins/ib_flood_management.htm

http://www.geographyalltheway.com/ib_geography/ib_drainage_basins/ib_flood_management.htm

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  • 1. Dams
  • 2. Name that Dam
  • 3. 1
  • 4. 2
  • 5. 3
  • 6. 4
  • 7. 5
  • 8.
    • Reasons for building dams:
    • Water storage for drinking, industry or irrigation.
    • Hydroelectric power.
    • Flood control.
    • Regulation of river flow for navigation (river regime).
    • Other advantages:
    • Fish stocking.
    • Tourism.
    • Political reasons. Building dams shows the international community that economic development is occurring, so that overseas investors may choose that country.
  • 9.  
  • 10.
    • Disadvantages of dams:
    • 1% of a dam’s capacity is lost through silting each year.
    • There is increased likelihood of bank erosion downstream.
    • No renewal of fertile soils.
    • No input in dynamic depositional landforms like deltas.
    • Flooding areas of woodland and vegetation leads to rotting vegetation and huge releases of methane and carbon dioxide (greenhouse gases).
    • The displacement of people.
    • Huge cost – source of money (tied aid?)
  • 11.  
  • 12.  
  • 13.  
  • 14.  

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