The total capacity of a reservoir is 25 million cubic metres and dead storage is

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The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after

Options:

A . 50 years

B . 150 years

C . 200 years

D . 250 years

Answer: Option A

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