Question

After using the convolution method, the peak flow value from a 4-hr duration unit hydrograph is...

After using the convolution method, the peak flow value from a 4-hr duration unit hydrograph is four (4) times bigger than the peak flow of the original 1-hr duration unit hydrograph event. True or False? Explain.

Engineering   Civil-Engineering   
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Answer #1

This statement is FALSE.

Peak flow of a hydrograph is the maximum flow in the catchment at a particular time. The comparison of peak flows between two unit hydrographs can be done on the basis of their Excess rainfall intensity

( ERI) . The hyetograph showing excess rainfall ( excluding base flow ) is known as Excess Rainfall Hyetograph ( ERH ).

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