Question
Download Solution PDFAccording to the Dicken's formula for estimating floods, the peak discharge is [proportional to: (A is catchment area)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Ryve’s Method
This formula is used only in Southern India.
\({Q_P} = {C_R}{A^{\frac{2}{3}}}\)
Rational Method
This method is based on the principle of the relationship between rainfall and runoff. Hence, it can be considered to be similar to empirical method.
\({Q_P} = \frac{1}{{36}}k{P_c}{A^1}\)
Dicken’s Method
It was earlier adopted only in Northern India but now it can be used in most of the States in India after proper modification of the constant.
\({Q_P} = {C_D}{A^{\frac{3}{4}}}\)
Inglis Method
This formula is used only in Maharashtra. Here three different cases are taken into consideration.
\({Q_P} = \frac{{124A}}{{\sqrt {A + 10.4} }} \cong 123\sqrt A\)
where
QP = Peak discharge in m3/s.
A = Area in km2.
CR = CD = coefficient applicable in certain region.
6 < CD < 30
6 < CR < 11
Last updated on Mar 26, 2025
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