Human-made channel for water / From Wikipedia, the free encyclopedia

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A flume is a human-made channel for water, in the form of an open declined gravity chute whose walls are raised above the surrounding terrain, in contrast to a trench or ditch.[1][2] Flumes are not to be confused with aqueducts, which are built to transport water, rather than transporting materials using flowing water as a flume does.[citation needed] Flumes route water from a diversion dam or weir to a desired materiel collection location. Flumes are usually made up of wood, metal or concrete.

Log flume in Sweden, August 2010

Many flumes took[when?] the form of wooden troughs elevated on trestles, often following the natural contours of the land. Originating as a part of a mill race, they were later used in the transportation of logs in the logging industry, known as a log flume. They were also extensively used in hydraulic mining and working placer deposits for gold, tin and other heavy minerals.