A structure similar to a dam used to control the flow of water into a canal from a body of water such as a river with gateways that can be opened and closed with gates to increase or decrease the volume of water flowing through it.
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A structure similar to a dam used to control the flow of water into a canal from a body of water such as a river with gateways that can be opened and closed with gates to increase or decrease the volume of water flowing through it.