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How can river flow be
managed – ‘hard engineering’
A. Hard Engineering Strategies
(p117)
• This uses technology in order to try to control
rivers.
• They tend to give immedi...
What is a dam and what does it
do?
How can river flow be managed – ‘hard engineering’
How can river flow be managed – ‘hard engineering’
Cross section of a dam
How can river flow be managed – ‘hard engineering’
Why are they built?
• Generate electricity
• Stop river flooding downstream
• Provide water for farmers, factories or
home...
1. Dams & Reservoirs
• Often part of a multi-purpose project (often to
control river flow, produce HEP, supply water, etc....
• Flooded Italian
Village
2. Channel (River)
Straightening
• This involves digging a straighter shorter channel in
areas where rivers meander. The l...
Example of Hard Engineering:
Three Gorges Dam, China
• Reduces flood risk from 1 in
10 yr event to 1 in 100 yr
event.
• 1....
Hard engineering ap
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Hard engineering ap

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Transcript of "Hard engineering ap"

  1. 1. How can river flow be managed – ‘hard engineering’
  2. 2. A. Hard Engineering Strategies (p117) • This uses technology in order to try to control rivers. • They tend to give immediate results but are expensive • Also in the future they may provide more problems. How can river flow be managed – ‘hard engineering’
  3. 3. What is a dam and what does it do? How can river flow be managed – ‘hard engineering’
  4. 4. How can river flow be managed – ‘hard engineering’
  5. 5. Cross section of a dam How can river flow be managed – ‘hard engineering’
  6. 6. Why are they built? • Generate electricity • Stop river flooding downstream • Provide water for farmers, factories or homes nearby.
  7. 7. 1. Dams & Reservoirs • Often part of a multi-purpose project (often to control river flow, produce HEP, supply water, etc.) • Recreation activities on Lake Powel, USA here • Major example is the 3 Gorges Dam in China. Costs Benefits How can river flow be managed – ‘hard engineering’
  8. 8. • Flooded Italian Village
  9. 9. 2. Channel (River) Straightening • This involves digging a straighter shorter channel in areas where rivers meander. The logic behind this is to speed up water flow in flood prone areas, and stop water from "hanging around". • This has occurred in York, but can cause flooding in downstream areas - a knock on consequence. Costs Benefits How can river flow be managed – ‘hard engineering’
  10. 10. Example of Hard Engineering: Three Gorges Dam, China • Reduces flood risk from 1 in 10 yr event to 1 in 100 yr event. • 1.4m people moved to build dam and reservoir. • What are the costs and benefits of the scheme? COSTS BENEFITS
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