A weir /ˈwɪər/ is a barrier across the horizontal width of the ... - dofaq.co
weir

A weir /ˈwɪər/ is a barrier across the horizontal width of the ...

wikipedia - 02 Sep 2015
A weir /ˈwɪər/ is a barrier across the horizontal width of the river that alters the flow characteristics of the water and usually results in a change in the vertical height of the river level. There are many designs of weir, but commonly water flows freely over the top of the weir crest before cascading down to a lower level.

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