submerged weir

submerged weir

[səb′mərjd ′wer]
(civil engineering)
A dam which, when in use, has the downstream water level at an elevation equal to or higher than the crest of the dam.
References in periodicals archive ?
The permanent closure of 10 gates have formed an island and a submerged weir which has reduced the flood capacity of the barrage from 1.5 million to 900,000 cusecs.
The proposed project would involve the construction and operation of a water intake, a power tunnel, a powerhouse, a tail race, a submerged weir, a construction camp, a bridge, and access roads.