human factors

• distance -

  • site close to construction materials = reduced cost of transport
• compensation -

  • the costs of moving those in the area to be flooded and loss of farmland will be expensive
• energy transportation -

  • sites close to farmland or urban areas would reduce the water / electrical energy lost during transportation
• land value -

  land to be flooded mustn't be of value eg. high quality farmland or historical / environmental importance