SEE: Water: 5.5C

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  • 5.5C: Impacts of flooding
    • Environmental
      • Soils
        • Wildlife in the soils can be poisoned by polluted flood water
      • Ecosystems
        • In a natural ecosystem, flooding is good! It replenishes groundwater, fills wetlands, can trigger breeding
          • However, if an ecosystem has been impacted by human activities then flooding can become negative
            • Excessive overland flow can lead to excess in nutrients causing eutrophication and destruction of aquatic plants
      • TLD, river banks eroded adding to future flood risks. Rivers also choked with debris/sewage
    • Social impacts
      • Post-flood morbidity from disease such as cholera
      • Structural damage to property
        • Extremely high in megacities such as Mumbai, where growth has outstripped flood defence systems
      • TLD 2015
        • 5,200 homes flooded
        • Local services closed
    • Economic impacts
      • Escalating food prices due to shortages of products as agriculture is impacted
      • Services/busineses being flooded mean people are out of jobs
        • E.g. 1,000 lost their jobs in 2015 TLD flooding due to flooding of a factory
      • May reduce income from tourism
        • Cumbria experienced dry tourism for a year after 2015 floods
      • TLD
        • £400-500 million in costs
        • £250 million in insurance
    • Flooding statistics
      • Between 1990-2010, there were 3,000 flooding disasters globally
      • 90% of flood deaths in Asia
      • 50% of economic damage via floods in Asia

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