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A conduit is a channel or pipe designed to convey water, fluids, or protect electric cables. In water systems, conduits are typically covered or closed sections of aqueducts that transport water under pressure.1

These structures can be constructed from materials such as steel, reinforced concrete, cast iron, or asbestos cement. They are often placed below the hydraulic grade line to prevent air from becoming trapped within them. Conduits can also refer to open, man-made passageways for water, similar to canals or aqueducts.12

Additionally, natural conduits can form through geological processes, such as lava tubes, which are channels created by flowing lava.3

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