Irrigation Engineering
A counter berm is

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

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Irrigation Engineering
Lacy's regime condition is obtained if

Silt charge in the channel is variable
Silt grade in the channel is variable
Discharge in the channel is variable
Channel flows in unlimited, incoherent alluvium of the same character as that transported material

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Irrigation Engineering
An artesian aquifer is the one where

water table serves as upper surface of zone of saturation
water is under pressure between two impervious strata
water surface under the ground is at atmospheric pressure
None of these

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