Canal  

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 +"When [[Domenico Fontana]] accepted the appointment of architect to the Viceroy [[Juan de Zúñiga, 1st Duke of Peñaranda]] his crew, while building a [[canal]], confirmed the location of the ancient city of [[Pompeii]]."--Sholem Stein
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{{Template}} {{Template}}
-'''Canals''' are [[man-made]] channels for water. +'''Canals''' or '''artificial waterways''' are [[waterway]]s or [[river engineering|engineered]] [[channel (geography)|channel]]s built for [[drainage]] management or for conveyancing [[water transport]] [[watercraft|vehicle]]s. They carry free, calm surface flow under [[atmospheric pressure]], and can be thought of as artificial [[river]]s.
-There are two types of canal:+In most cases, a canal has a series of [[dam]]s and [[lock (water transport)|locks]] that create [[reservoir]]s of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a '''navigation canal''' when it parallels a natural river and shares part of the latter's [[discharge (hydrology)|discharge]]s and [[drainage basin]], and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its [[valley]].
-#[[Waterway]]s: [[navigable]] [[transport]]ation canals used for carrying ships and boats shipping goods and conveying people, further subdivided into two kinds:+A canal can cut across a [[drainage divide]] atop a [[ridge]], generally requiring an external water source above the highest [[elevation]]. The best-known example of such a canal is the [[Panama Canal]].
-##Those connected to existing [[lake]]s, [[river]]s, or [[ocean]]s. Included are inter-basin canals, such as the [[Suez Canal]], [[Erie Canal]], and the [[Panama Canal]].+
-##Those connected in a city network: such as the ''[[Grand Canal (Venice)|Canal Grande]]'' and others of [[Venice]] [[Italy]]; the ''[[gracht]]'' of [[Amsterdam]], and the waterways of [[Bangkok]].+
-#[[Aqueduct]]s: [[water supply]] canals that are used for the conveyance and delivery of [[potable]] water for human consumption, [[municipal]] uses, and [[agriculture]] [[irrigation]]. [[Rill]]s and [[acequia]]s are small versions.+
 +Many canals have been built at elevations, above valleys and other waterways. Canals with sources of water at a higher level can deliver water to a destination such as a city where water is needed. The [[Roman Empire]]'s [[aqueduct (bridge)|aqueduct]]s were such [[water supply]] canals.
 +
 +The term was once used to describe linear features seen on the surface of [[Mars]], ''[[Martian canals]]'', an optical illusion.
==See also== ==See also==
 +* [[Beaver]], a non-human animal also known for canal building
 +* [[Boat lift|Canal elevator]]
 +* ''[[Calle canal]]''
 +* [[Canal & River Trust]]
 +* [[Canal tunnel]]
 +* [[Environment Agency]]
 +* [[Horse-drawn boat]]
 +* [[Irrigation district]]
 +* [[Lists of canals]]
 +* [[List of navigation authorities in the United Kingdom]]
 +* [[List of waterways]]
 +* [[List of waterway societies in the United Kingdom]]
 +* [[Mooring]]
 +* [[Navigation authority]]
 +* [[Vindobona#Roman canals|Roman canals]] – (''[[Torksey]]'')
 +* [[Volumetric flow rate]]
 +* [[Water bridge]]
 +* [[British Waterways#Waterscape|Waterscape]]
 +* [[Water transportation]]
 +* [[Waterway restoration]]
 +* [[Waterways in the United Kingdom]]
 +* [[Weigh lock]]
 +
*''[[Kanał]]'' *''[[Kanał]]''
*[[KANAL - Centre Pompidou]] *[[KANAL - Centre Pompidou]]
{{GFDL}} {{GFDL}}

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"When Domenico Fontana accepted the appointment of architect to the Viceroy Juan de Zúñiga, 1st Duke of Peñaranda his crew, while building a canal, confirmed the location of the ancient city of Pompeii."--Sholem Stein

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Canals or artificial waterways are waterways or engineered channels built for drainage management or for conveyancing water transport vehicles. They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers.

In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as slack water levels, often just called levels. A canal can be called a navigation canal when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley.

A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal.

Many canals have been built at elevations, above valleys and other waterways. Canals with sources of water at a higher level can deliver water to a destination such as a city where water is needed. The Roman Empire's aqueducts were such water supply canals.

The term was once used to describe linear features seen on the surface of Mars, Martian canals, an optical illusion.

[edit]

See also


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