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Drainage basins and rivers

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Chapter 17 Drainage basins and rivers * * * * * * * * * * Saturday, May 20, 2006 2:57 AM The Associated Press BEIJING (AP) Construction crews finished the ... – PowerPoint PPT presentation

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Title: Drainage basins and rivers


1
Chapter 17
  • Drainage basins and rivers

2
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3
The hydrological cycle
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5
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6
Drainage basin
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8
Velocity
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Discharge
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Gradient of a river
11
Vegetation
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Permeability of rocks
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Load
 
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Wetted perimeter
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Transportation
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solution
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River erosion
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  • River erosion

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Waterfalls
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Meander
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Case studies
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Case study
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Saturday, May 20, 2006 257 AM
The Associated Press BEIJING (AP) Construction
crews finished the dam of the world's largest
hydroelectric project on Saturday, state media
reported.The construction of the 607-foot high,
1.4-mile long dam across the Yangtze River does
not fully complete the hugely controversial Three
Gorges Dam project.The last 12 of the dam's 26
generators are to be installed over the next two
years, said the China Yangtze River Three Gorges
Project Development Corp. The project is set to
be completed in 2008, a year ahead of
schedule.Begun in 1993, the project has steamed
ahead with the backing of the communist
leadership despite objections to its 22 billion
cost and environmental and social impact.More
than 1.3 million people have been relocated to
make way for the dam and its reservoir.Environme
ntalists and engineers have warned that the
reservoir risks becoming polluted with waste from
cities and towns upriver, many of which lack
adequate sewage treatment plants.
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