Irrigation Engineering
As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at

same level
lower level
higher level
any of the above depending on the design

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Irrigation Engineering
A counter berm is

A vertical benching provided on the outer edge of the bank
A horizontal benching provided on the outside slope
A vertical benching provided on the inner edge of the bank
A horizontal benching provided on the inside slope

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