F2 - SEM1 - What Is Flooding - Case Study Flashcards
When is the the three gorges project launched and completed?
launched in 1994
completed in 2009
What is the objective of Three Gorges Project?
solve flooding problem in Chang Jiang Basin
What is the world’s largest dam?
The Three Gorges Dam
What are the purposes The Three Gorges Dam serves?
- flood control <- main
- hydro-electri power generation
- navigation
- drought relief
What are the benefits of the Three Gorges Dam?
reservoir can hold a large volume of water. It protects millions of people and farmlands downstream
Social benefits
1. residents are relocated to areas with a better living environment
Economic benefits
1. supply of water and hydro-electric power supports farming and industrial development
2. navigation is improved. it facilitates water transport and boosts tourism development
Environmental benefits
1. hydro-electric power helps improve air quality by reducing the use iof fossil fuels and carbon emissions
What are the problems of the Three Gorges Dam?
silting problem in the reservoir will reduce its capacity. flooding may still occur
Social problems
1. many people are forced to leave their homeland. Their social ties are lost
Economic problems
1. supply of hydro-electric power maybe unstable. farmlands downstream also lose their nutrient supply from the river. farming and industrial developmant are hindered
2. ships are left stranded during the dry season when the water level falls. navigation is hindered
Environmental problems
1. rivervalleys are drowned. wildlife habitats and natural scenery are destroyed
2. water and silt in the reservior create great pressure on the dam. Earthquakes may happen
Cultural problems
1. Many historical sites are drowned, causing huge cultural loss
What are the dimensions of Three Gorges Project?
181m equals = 60 storey height
2300 width
reservoir capacity 39.3 billion m3 = 140 high island reservoirs
