Notes
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Outline
1
Estimating Catchment Runoff
2
Infiltration methods
  • Soil Conservation Service (SCS)
    Curve Number (CN) method
  • Horton’s equation
    ‘moving curve’ method
  • Green & Ampt model
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SCS Curve Number method
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Horton equation
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Green & Ampt model
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Rainfall-Runoff models (1)
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Rainfall-Runoff models (2)
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Calculating the Runoff (1)
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Calculating the Runoff (2)
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Calculating the Runoff (3)
  • Overland flow routing choices:
  • Combine effective rainfall with:
    • triangular response function
    • rectangular response function
    • single linear reservoir response function
  • Combine infiltration & other losses with outflow from idealized inclined plane.
    (Similar to SWMM RUNOFF method)