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Hydrology & Irrigation

Double Mass Curve and DAD Analysis

Steep rise in...

Question

Steep rise in the flow-mass curve during a certain period indicates:

A

Very high evaporation losses during that period

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B

Flash floods during that period

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C

Sudden spurt in irrigation demand during that period

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D

Sudden rise in demand for water to meet hydropower generation

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Solution

The correct option is B Flash floods during that period
Flow mass curve is a plot of the cumulative discharge volume against time plotted in chronological order, the slope of the mass at any point represents rate of flow at that instant, so flash flood during a period will show steep rise in the flow mass curve.

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