Irrigation Engineering
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

250 years
150 years
200 years
50 years

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Irrigation Engineering
Which one of the following statements is correct?

The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream
All listed here
The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land
The canal system and the drainage system are complementary

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