human causes - flooding

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  • Human Causes
    • Urbanisation
      • More people in towns and cities
      • Floodplain development/built upon
      • The impermeable surfaces increase overlandflow, and decrease infiltration meaning water gets to the channel quicker
    • Deforestation
      • Greater risk of soil erosion and increase sediment in the river
      • Lack of interception and storage of water
      • and other changes in vegetation cover e.g agriculture
    • River Management
      • Embankments
      • Dams
      • Artificial levees and channels, increasing the flood risk elsewhere
    • Climate Change
      • Enhanced Greenhouse effect increasing the sea temperature
      • increases evaporation leading to more water in the atmosphere, increasing frequency and severity of extreame events
      • More snow melt water

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