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_________________?

Related Mcqs:

Unit of runoff in M.K.S. system is________________?

A. cubic metre/sec B. metre/sec C. cubic metre D. square metre...

For wave action in dams, the maximum height of freeboard is generally taken to be equal to_______________?

A. 0.5 hw B. 0.75 hw C. 1.25 hw D. 1.50 hw where hw is height of wave...

A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If <j) index remains at the same value, the runoff due to 10 cm of rainfall in 12 hours in the catchment is___________________?

A. 4.5 cm B. 6.0 cm C. 7.5 cm D. 9.0 cm...

A divide wall is provided_______________?

A. at right angle to the axis of weir B. parallel to the axis of weir and up-stream of it C. parallel to the axis of weir and down-stream of it D. at an inclination to the axis of weir...

Instantaneous unit hydrograph is a hydrograph of________________?

1) unit duration 2) unit rainfall excess 3) infinitely small duration 4) infinitely small rainfall excess The correct answer is? A. (1) and (2) B. (1)and(4) C. (2) and (3) D. (3) and (4)...