Irrigation Engineering
The useful storage is the volume of water stored in the reservoir between

normal pool level and maximum pool level
minimum pool level and normal pool level
minimum pool level and maximum pool level
river bed and minimum pool level

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Irrigation Engineering
A counter berm is

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

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Irrigation Engineering
Infiltration rate is always

more than the infiltration capacity
equal to or more than the infiltration capacity
less than the infiltration capacity
equal to or less than the infiltration capacity

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