Water on the Land

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  • Created by: Liam1909
  • Created on: 21-05-16 16:07

Boscastle Flood, 2004

16th August 2004

Causes:

  • Freak rainstorm causing 8in of rain in one day
  • Rainfall poured down the steep-vallied slopes and swelled the River Valency 
  • Storm was localised so was hard to predict

Effects:

  • River Valency discharged 500cm3 of water-the same as the River Thames at high tide
  • 58 buildings were flooded
  • 25 buildings were swept away
  • 84 cars swept away
  • £15 million worth of damage
  • many were traumastised by the event and increased levels of stress
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Boscastle Flood, 2004

Responses:

  • Evacuation of the town
  • Rescue helicopters went to save people who made their ways onto the tops of houses
  • No one died
  • Air rescue helicopters came to help 
  • Buildings were dried out by dehumidifiers and fans
  • 2005 saw several businesses open back up

Planning for the future:

  • Satellites and radar now used to help keep track of developments and warnings of future floods
  • Warnings now issued in Boscastle area
  • Met Office established a traffic light warning system-yellow for 'be aware', amber for 'be prepared' and red to 'take action'
  • Early warnings given out when 60% confident 
  • Flash flood warnings given out when 80% positive
  • Dedicated telephone lines now made-Floodline and Environment Agency's website has info
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Bangladesh Floods, 2004

July-September 2004

Causes:

  • Moonsoon Climate-period of high rainfall and snow causing soil to be saturated 
  • spring snow melt in Himalays increased water levels
  • Rivers silt up due to increased soil erosion
  • 80% of Bangladesh population live on floodplains
  • Poorly maintained levées 
  • Urbanisation on floodplains-increasing surface-run off

Effects:

  • Two-thirds of land covered by flood
  • Dhaka (capital) 2 metres underwater
  • 30 million people homless
  • 750 died
  • 60% submerged underwater
  • Poor health and contamination 
  • lack of clean water supplies and 20% decrease in production
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Bangladesh Floods, 2004

Responses:

  • Boats rescued people
  • Emergency supplies of food, water, tents and supplies
  • Fodder for livestock (food)
  • repair and rebuilding of houses and services
  • $74million sent by the UN

Planning for the future:

  • Reduction in deforesation in Nepal and Himalayas
  • 7 large dams costing $30-40million and 40 years to complete
  • created water flood, storage areas
  • developed Flood Warning system
  • built 350km enbankment-7 metres high at a cost of $6 billion 
  • built 5000 flood shelters to house future flood victims
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