Canals

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  Canals

  Canals are artificial waterways, built for boats or ships to travel across land, or simply to transfer water from one place to another. In most cases, a navigable canal has a...

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  Locks

  Canals need to be level, so engineering solutions are needed when a canal is built in upland areas. As with railways or motorways, cuttings or tunnels can be dug in order to...

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  History of canals

  The oldest known canals were irrigation channels built in Mesopotamia (in present-day Iraq) in around 4000 BC. Irrigation systems were also a feature of other early civilizations...

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  Aqueducts

  Canals with sources of water at a higher level, such as springs, lakes or mountain streams, may carry water to a place at a lower level where it is needed. Canals built for this...

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