4.6

• Choice of Site

  • High Percipitation to provide sufficient water
  • Low temperatures to prevent evaporation
  • Build on strong rock so water doesnt drain
  • Built up high to have a good potential for HEP
  • Narrow steep sided valley for economical reasons
• Dams ADV

  • Provides Jobs
  • Creation of habitad for wetland species
  • Greener alternative for energy generation
  • Generates electricity via HEP
  • Flood control
  • Fossil fuel consumption is reduced
• Dams DISADV

  • Forced relocation of people
  • Water supply is altered downstream
  • Very expensive
  • Flooding land
  • Disruption of fish life cycles and other organisms
  • Reducing jobs for farms if fisheries are affected
• Dams Sustainability

  • Alternative way of electricity generation without greenhouse gas emissions
• Dams Unsustainability

  • Reservoirs can become silted due to material carried into them by rivers
  • Dam structure can be under a lot of pressure and can eventually fail
  • Negative effects on the enviorment and fish populations