Home > Aqueduct
:This article is about the structure aqueduct, for the racecourse see Aqueduct Racetrack.An aqueduct is an artificial (man-made) channel that is constructed to convey water (properly called a canal) from one location to another. Many aqueducts are raised above the landscape, resembling bridges rather than rivers. Sufficiently large aqueducts may also be usable by ships. They are a kind of viaduct, carrying water instead of a road etc. While a road bridge often carries the road at a more elevated level than the rest of the road, such a variation of height is not possible for an aqueduct, of course.
Historically, many agricultural societies have constructed aqueducts to irrigate crops. Archimedes invented the water screw to raise water for use in irrigation of croplands.
Another widespread use for aqueducts is to supply large cities with clean drinking water. Some of the famed Roman aqueducts still supply water to Rome today. In California, USA, a large aqueduct runs in the central valley that transports water from North California to the Los Angeles area.
In modern civil engineering projects, detailed study and analysis of open channel flow is commonly required to support flood control, irrigation systems, and large water suppy systems when an aqueduct rather than a pipeline is the preferred solution.
Navigable aqueducts include:
- aqueduct near Roelofarendsveen, Netherlands: carries the Ringvaart canalCanal du Midi in Toulouse, France Canals are man-made waterways, usually connecting existing lakes, rivers, or oceans. They are used for transportation, often by barges or narrowboats on smaller canals, and by ships on ship canals that connect to the ocea over the A4 highwayA highway is a major road within a city, or linking several cities together. It includes roads known as interstate highway, freeway, motorway and autobahn, where a full description varies by country. Generally, a highway is a road which has multiple lanes and the HSLFor the HSL (also HLS) color space, see HLS color space The HSL South is the Dutch part of a new high-speed railroad being built between Schiphol Airport and Brussels. The Belgian part is called HSL4 . It is expected to be operational in 2007. High Speed being constructed, which are situated on land below the level of the canal (and below sea level)
- Gouwe aqueduct, near GoudaGouda (population 71,687) is a city in the western Netherlands, in the province of South Holland. Gouda, which was granted city rights in 1272, is famous for its Gouda cheese, smoking pipes and its 15th century town hall. External links http://www. platte, Netherlands: carries the Gouwe river over the A12 highway, which is on land below the level of the river
- the Pontcysyllte AqueductThe Pontcysyllte Aqueduct is an aqueduct which carries the Llangollen Canal over the valley of the River Dee, east of Llangollen in north Wales. The aqueduct is 1007 feet long, constructed of cast iron troughs mounted on 19 masonry arches, and carries the carries the Llangollen CanalThe Llangollen Canal was initially known as the 'Ellesmere Canal' and later as part of the Shropshire Union Canal'. The canal links Llangollen in north Wales with Nantwich in south Cheshire, via the town of Ellesmere in north-west Shropshire. It is regard over the River Dee in north WalesFor alternate meanings, see Wales (disambiguation Wales ( Welsh: Cymru pronounced /"k@mrI/ SAMPA, km IPA, 'Kumree' approximate pronunciation) is one of the four nations comprising the United Kingdom (the other three being England, Scotland and Northern Ir, and was designed by Thomas Telford and opened in 1805.
- the Union Canal in Scotland has many aqueducts, including the Slateford Aqueduct that takes the canal over the Water of Leith, the Almond Aqueduct over the River Almond at Ratho and the very impressive Avon Aqueduct over the River Avon. This is the second longest aqueduct in the United Kingdom.
- in recent years the building of the Lichfield Aqueduct prompted the UK governement to pass legislation preventing a road being built in the path of a canal being renovated without providing a tunnel or aqueduct for it to pass.
Roman aqueducts include:
See also:
Buildings and structures
Water
