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Question

When the outflow from a storage reservoir is uncontrolled as in a freely operating spillway, the peak of outflow hydrograph occurs at

A
the point of intersection of the inflow and outflow hydrographs
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B
a point, after the intersection of the inflow and outflow hydrographs
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C
the tail of inflow hydrographs
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D
a point, before the intersection of the inflow and outflow hydrographs
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Solution

The correct option is A the point of intersection of the inflow and outflow hydrographs
When outflow from a reservoir is uncontrolled as in freely operating spillway, then the peak of outflow hydrograph will occur at a point of intersection of inflow and outflow curves, whereas if outflow from a reservoir is controlled, then peak will occur after the intersection of the curve.

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