Factors affecting river discharge

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  • Created by: Bethhy
  • Created on: 14-04-14 12:37
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  • Factors affecting river discharge
    • Human Factors
      • Building Urban areas around the river.
        • Impermeable materials used as building and infrastructure materials
          • Concrete
          • Tarmac
        • Infiltration
          • Impermeable materials used as building and infrastructure materials
            • Concrete
            • Tarmac
          • Infiltration will be less in urban areas, this increases surface run off for example.
            • shorter lag time so river discharge increases massively very quickly
      • Building on Flood plains
        • Water not able to infiltrate back to the river easily
        • Stopping natural levees and other processes.
      • Not maintaining the river channel very well
        • Man made sediment in the river will disrupt river flow
        • Not enough dredging- this will reduce capacity and wetted load being carried
    • Physical Factors
      • Heavy, Continuous rainfall
        • Saturated land
        • weathering
      • Drainage basin characteristics
        • Larger drainage basin more water to one river
          • Tributaries
        • Steep valleys, quicker lag time
        • Gradient of the land

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