An ogee spillway of a concrete gravity dam having FRL of 328 m and MWL of 340 m

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Question

An ogee spillway of a concrete gravity dam having FRL of 328 m and MWL of 340 m is provided with vertical gates between piers erected on the spillway. The effective length of the spillway is 60 m. The discharge through the spillway when gates are opened up to the actual reservoir level of 331.0 m will be_____________

Options:

A . 850 cumecs

B . 1700 cumecs

C . 2800 cumecs

D . 1000 cumecs

Answer: Option B
Answer: (b).1700 cumecs

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