Sluiceway n. An artificial channel into which water is let by a sluice; specifically, a trough constructed over the bed of a stream, so that logs, lumber, or rubbish can be floated down to some convenient place of delivery.
... took charge. In almost unbroken series the logs shot through the sluiceways into the river below, where they were received by the jam crew and started on the next stage of their long journey to the mills. In a day the dam was passed. One of the younger men rode the last log through the sluiceway, standing upright as it darted down the chute into the eddy below. The crowd of townspeople cheered. The boy waved his hat and birled the ... — The Rules of the Game • Stewart Edward White