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Wikipedia: Canals are man-made channels for water. There are two types of canal:
Canals are created in one of three ways, or a combination of the three, depending on available water and available path:
Smaller transportation canals can carry barges or narrowboats, while ship canals allow seagoing ships to travel to an inland port (e.g. : Manchester Ship Canal), or from one sea or ocean to another (e.g.
![[Amsterdam gracht]](http://images.ookaboo.com/photo/s/Amsterdamcannel333_s.jpg "Amsterdam gracht")
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![[Canals can disrupt water circulation in marsh systems.]](http://images.ookaboo.com/photo/s/Viewing_man_made_canals_in_the_marsh_in_Louisiana_2C_Barataria_Basin_s.jpg "Canals can disrupt water circulation in marsh systems.")
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 from Mattisse |
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