The Vargas Landslide, Venezuela

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  • Created by: berra
  • Created on: 12-04-16 21:23
The Vargas Landslide, Venezuela
...
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When?
December 1999
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What went unnoticed?
The accumulation of sediment in streams
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How much rain fell in the two days prior?
914mm
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What increased the shear stress?
Slums built on the slopes
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What was the name of the mountains?
The Cordillera dela costa mountains
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Why were the mountains a problem?
Summit 10km away from the coast - high run-off giving streams lots of energy
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Deaths?
15,000-30,000
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How many affected?
214,000
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How many refugees?
44,000
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How many building swept away?
452
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How much debris was added to coastal alluvial fans?
2 million m3
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How many people were temporarily evacuated?
100,000
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What was done to dams?
Checks to ensure they can hold debris flows back
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What was built to prevent future flows?
Flood channels built on alluvial fans to allowing the passing of flows
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What was done on a communal level?
Re-alignment of streets and buildings in the direction of the debris flows
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Other cards in this set

Card 2

Front

When?

Back

December 1999

Card 3

Front

What went unnoticed?

Back

Preview of the front of card 3

Card 4

Front

How much rain fell in the two days prior?

Back

Preview of the front of card 4

Card 5

Front

What increased the shear stress?

Back

Preview of the front of card 5
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