Differentiate between weir and barrage

Differentiate between weir and barrage
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1 Answer

Answer :

Weir
Barrage
Initial cost of weir is low
Initial cost of barrage is high.
Area of submergence is more due to large afflux.
Area of submergence less due to less afflux
Due to crest there is problem of silting
There is good control over silt entry into canal. 
The raising and lowering of shutter is not convenient it requires more time and labour as it is done manually. 
The raising and lowering of gate is convenient as it can be operated mechanically
The control over flood is not possible.
There is good control over flood situation.
It is difficult to inspect and repair.
These provide better facilities for inspection and repair of various structures
Roadway is not possible across river
Road way can be provided across the river
Storage of water is done by crest and very little by or nil portion of water is by gate
In barrage most of water storage is done by shutter and very less or nil portion of water is by crest
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