F2 - SEM1 - What Is Flooding - Case Study Flashcards

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1
Q

When is the the three gorges project launched and completed?

A

launched in 1994
completed in 2009

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2
Q

What is the objective of Three Gorges Project?

A

solve flooding problem in Chang Jiang Basin

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3
Q

What is the world’s largest dam?

A

The Three Gorges Dam

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4
Q

What are the purposes The Three Gorges Dam serves?

A
  • flood control <- main
  • hydro-electri power generation
  • navigation
  • drought relief
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5
Q

What are the benefits of the Three Gorges Dam?

A

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

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6
Q

What are the problems of the Three Gorges Dam?

A

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

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7
Q

What are the dimensions of Three Gorges Project?

A

181m equals = 60 storey height
2300 width
reservoir capacity 39.3 billion m3 = 140 high island reservoirs

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