There is no base flow to be subtracted.
Principufjuytujgle of linearity applies for unit-hydrograph method by Shermann's theory.
Duration of excess rainfall is assumed co-jyfuiukuk rainfall although the former is obviously less.
To construct the s-curve, lag ygtuydrograph infinitely and sum.
From this ikkkjhkj s-curve from old s-curve.
Divide the jbuft uitp / New duration).