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Question
In a barrage, the crest level is kept
A.
high with large gates
B.
high with no gates
C.
low with no gates
D.
low with large gates
Answer ( Option D)

low with large gates

Solution

Barrage is a structure similar to weir with the only difference that the crest is kept at a low level and ponding of water is accomplished mainly by means of gates. During floods these gates can be raised above HFL and thus enable the high flood to pass with minimum afflux.

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