The Vargas Landslide, Venezuela 0.0 / 5 ? GeographyCase studiesA2/A-levelOCR Created by: berraCreated on: 12-04-16 21:23 The Vargas Landslide, Venezuela ... 1 of 16 When? December 1999 2 of 16 What went unnoticed? The accumulation of sediment in streams 3 of 16 How much rain fell in the two days prior? 914mm 4 of 16 What increased the shear stress? Slums built on the slopes 5 of 16 What was the name of the mountains? The Cordillera dela costa mountains 6 of 16 Why were the mountains a problem? Summit 10km away from the coast - high run-off giving streams lots of energy 7 of 16 Deaths? 15,000-30,000 8 of 16 How many affected? 214,000 9 of 16 How many refugees? 44,000 10 of 16 How many building swept away? 452 11 of 16 How much debris was added to coastal alluvial fans? 2 million m3 12 of 16 How many people were temporarily evacuated? 100,000 13 of 16 What was done to dams? Checks to ensure they can hold debris flows back 14 of 16 What was built to prevent future flows? Flood channels built on alluvial fans to allowing the passing of flows 15 of 16 What was done on a communal level? Re-alignment of streets and buildings in the direction of the debris flows 16 of 16
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