ledc flooding case study

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  • ledc flooding case study
    • general infomation
      • place: South Asia (Bangladesh and India)
      • date: July and August 2007
      • rivers: Brahmaptura and Ganges
    • causes
      • heavy rainfall- in one region, 900mm of rain fell in July. the average in not usually more than 400mm in any one part of india
      • the continuous rainfall santurated the soil, increasing runoff into rivers
      • melting snow from glaiersin the Himalayan mountains increased the discharge of the Brahmuputra river.
      • the peak discharge of both rivers happened at the same time, which increased the discharge downstream
    • primary effects
      • over 2000 deaths
      • around 25 million people were made homeless
      • many factories closed and lots of livestock was killed
      • 112,000 houses were destroyed in India
      • rivers were polluted with rubbish and sewage
    • secondary effects
      • children lost out on education- 4,000 schools were affected by the flood
      • around 100,000 people caught waster-borne diseases; such as diarrhoea
      • flooded fields reduced basmati rice yields- prices rose by 10%
      • many farmers and factory workers became unemployed
    • flood management
      • bangladesh has a Flood Forecasting and Warning System with 85 monitoring stations. flood warnings can be issued 72 hours before a flood occurs, but the warnings dont reach rural communities
      • there are around 6000km of man-made levees to prevent flooding in bangladesh, but theyre easily eroded and not properly maintainened so are often breached
    • immediate response
      • many people didnt evacuate from areas that flooded and blocked transport links slowed down any evacuations that were attempted
      • other governments and international charities distributed food, water and other medical aid. technical equipment like rescue boats were sent to help people who were stranded
    • long-term responses
      • international charities have funded the rebuilding of homes and the agriculture and fishing industries
      • some homes have been rebuilt on stilts so theyre less likely to be damaged by future floods


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