Hard Engineering Schemes - Mega Dams

Question 1

Mega dams

Answer 1

(3 gorges dam) = hard engineering schemes that cost = significant amount of money + have controversial socio-economic + environmental effects

Question 2

3 Gorges Dam pro

Answer 2

• 3 Gorges Dam is designed 2 control flooding on the Riger Yangtze + improve the supply of water by regulating the flow
  Benefit locals by providing HEP energy + making the river navigable. Crucial = economic development = China 2 reduce its reliance on fossil fuels in particular coal
  Water held back by the Dam can also contribute to the water being transferred by the S-N WT

Question 3

3 Gorges Dams cons

Answer 3

632km2 of land was flooded including 1,500 villages + towns 2 form the reservoir behind the dam
1.3 million Chinese residents were relocated + local history from those villages = lost
Water quality = poor because of the surface runoff allowing industrial waste, sewage + agricultural chemical run off to enter into the Yangtze further upstream
Ecosystems were flooded + destroyed leaving animals w/o a habitat. Vegetation decay led 2 release of methane