When a weir is constructed, the downstream .bed of the river goes on e – McqOptions

MCQOPTIONS

1.	When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?
A.	Retrogression
B.	Lowering down of bed
C.	Ponding on down stream
D.	All are correct
Answer» B. Lowering down of bed

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