The Three Gorges Dam.

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GEOGRAPHY COURSEWORK

THREE GORGES DAM

INTRODUCTION

In this piece of coursework, I will be studying about the Three Gorges Dam. The Three Gorges Dam is to be located on the Yangtze River near the city of Yichang in China. The dam project is set at a cost of 17billion pounds. China is one of the worlds worst hit flood areas. The Yangtze River is the longest river in China. It is very unpredictable and frequently floods the surrounding lands killing thousands of people and disrupting the community’s way of life. Because of this, the government had to crate a way to tame the river. The building of the three gorges dams was the solution. The dam will also boost Chinas hydroelectric project. It is set to be the world’s largest hydroelectric project and will include 26 generators that will produce over 18000 megawatts of electricity. The expectancy is also that it will bring 10 000-tonne ships to travel as far as Chongqing. The project will promote the development of fishery in the reservoir, tourism and recreational activities. It will improve the water quality of the middle and lower reach of the river during the dry season; and it will bring favourite conditions into being for the scheme of South to North trans-basin water transfer.

The Yangtze River has over the centuries been used as a travel highway for Chinese ships and sea transport. It is the world’s third longest River behind the Nile and the Amazon. It is 3, 964miles long. Across the centuries, its fertile banks have been used as farmland by the local people and are inhabited by millions of people.

 Location: The chosen site for the project is in Sandouping, northwest of Yichang city in Hubei Province and is located at the downstream entrance to Xiling Gorge, 40 kilometers upstream from Gezhouba Dam.

The dam comes with advantages and disadvantages. The advantages have already been mentioned above. The disadvantages are mostly environmental. The natural beauty of the area will be lost, as it will be cleared to make way for the dam. The dam will be built at an enormous cost and it will result in over 2 million people being relocated to new lands.

 


THE CHINESE FLOODS OF 1991

Between late May and early August 1991,China suffered severe floods affecting 18 provinces. There was widespread destruction and loss of life. Between 206BC and 1949 the frequency of flooding in china was one in two years, that is a total of 1902 major floods between the mentioned periods. Flood prone areas are shown in the middle and lower parts of Chinas major rivers. The Yangtze River and the Songhia River were mainly the cause of the floods.

Causes of the flooding

Excessive rainfall was the major factor. One area, the Anhui Province received 35-50% of its annual 1200mm between a month that is between 18 May and 16 June. Reservoirs were too full to cope with the floods because the floods were too early large proportions of China were hit at one time. Silting in rivers had reduced the carrying capacity of the rivers. Most rainwater was channelled into the lower parts of the rivers. Intensive agricultural land use resulted in increased surface run-off because inward infiltration was reduced.

Effects of the floods

  • 206 million people were affected
  • Chinas bread basket province of Anhui was worst hit and 4.35billion kilograms of grain were lost
  • Cities were drowned
  • 1100 factories were forced to suspend production
  • Infrastructure including roads and bridges and hospitals and schools were damaged.
  • Chinas grand canal was closed after embankments collapsed, suspending trade and tourist traffic
  • Flood barriers were destroyed

Here is a report form one news agency website-www.archive.greenpeace.org

WORST FLOODS THIS CENTURY IN THE YANGTSE RIVER.

1,000 die, 10 million are made homeless, and some 20% of China's croplands are submerged. Chinese scientists blame the floods on global warming. Flooding since May has killed around 1,800 people and affected more than half of China's population of 1.1 billion, across central, eastern and northern China. Exceptional rainstorms fall in eastern China throughout June and into July. The Yangtze River overflows its banks in many places and threatens Shanghai and Nanjing. The floods result in over 1,300 deaths and some 10 million homeless people. At one stage 20 percent of the croplands of China are estimated to be under water. Rainfall from June to mid-July reaches amounts more than half the average annual rainfall. The worst floods in 50 years in east China cause an estimated $800 million damage. Health authorities express concern at the rapid spread of water-borne dysentery, typhoid, hepatitis and malaria as two million homeless people camp in unsanitary roadside camps. More than half the summer wheat crop in east- central China is destroyed. Chinese scientists blame the early arrival of the floods on global warming.

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Relief and aid after 1991 floods.

Information taken from

Li Kashing donated US$50 million dollars

In July, Tzu Chi set up an account that would accept donations to help victims

Master Cheng Yen donated US$15 000 in August

From October to December a fund raising event was held until December

Tzui Chi members donated 19 687 coats to 22 counties and towns

1635 cotton coats and pants and 984 comforters were delivered to Xinghua, Jiangsu in

December

11451 cotton coats and pants, 5776 comforters, 858 825 kilograms of rice and ...

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