Q. Unit hydrograph method for flood estimation is applied to :

A
Large basins
B
Hilly areas
C
Small and medium sized basin
D
All of the above
Solution:
  • It is a direct run off hydrograph based on linear systems theory.
  • It can be used to estimate the flood in the entire water shed irrespective of the topographical difference.
  • Unit hydrograph assumes uniform distribution of rainfall over the catchment.
  • Also the intensity is assumed constant for the duration of rainfall excess.
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