Coastal flooding - Hurricane Katrina , New Orleans

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  • Created by: Revisiola
  • Created on: 14-05-16 18:09
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  • Coastal flooding- Hurricane Katrina , New Orleans(2005)
    • Causes
      • Physical
        • Gulf of Mexico - vulnerable to hurricanes
          • Built up energy and magnitude as it traveled down the gulf of Mexico
        • CATEGORY 5
        • 51% of New Orleans is on or below sea level
          • Bowl  shaped
        • 10m storm surge
        • The area is surrounded by water sources - Mississippi river , lakes and the sea
      • Human
        • ineffective sea defences - levees breached in 3 places , designed for a category 3 hurricane
        • urbanised coast
          • impermeable surfaces
        • soft soil - urbanisation made the land sink further
    • Consequences
      • Socio-economic
        • estimated damage : $81 billion
        • 1,400 deaths
        • 20,000 sought shelter in the football stadium
        • oil production was interrupted which led to increased priced globally
        • The region supported 1 million non-farming jobs with 600,000 of them in New Orleans
        • Total economic impact on lousianna and mississippi  may exceed $150 billion
      • Physical
        • 80% of New Orleans was flooded
        • water was 6-12 miles inland
        • 1.3 M acres of forest land was destroyed - $5 billion
        • storm surges caused coastal erosion
        • breeding land was lost

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