An artificial bar or obstruction placed in a river or watercourse to increase the depth of water; as, the barrages of the Nile.

French for weir, a low dam used to control the height and flow of water on a canalized river.

a dam across a tidally-affected inlet or estuary and blocks the egress to the ocean

an artificial water barrier to promote irrigation

a construction across the mouth of a river that prevents the entry of seawater; behind a barrage' the water is fresh.

Any artificial obstruction placed in water to increase water level or divert it. Usually the idea is to control peak flow for later release.

A barrier, such as a low earth dam, which impounds water for irrigation.

A barrage is a relatively low, gated dam built across a river to regulate water discharge. In the Asian subcontinent, barrages are primarily used to divert water into canals for irrigation and sometimes to facilitate navigation. During monsoon season flows, the gates are generally left open. They are then progressively lowered as the flood recedes.

Specifically any of the five low weirs at the mouth of the River Murray constructed to exclude seawater from the Lower Lakes (eg: Lake Albert & Lake Alexandrina).