Irrigation Engineering
A counter berm is

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

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Irrigation Engineering
A deep well

is always deeper than a shallow well
both (A) and (B)
has more discharge than a shallow well
is weaker structurally than a shallow well

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