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The St Lawrence Waterway has many locks what do locks do why are they needed on some canals but not on others'?
Wiki User
∙ 14y ago
Locks on canals are used as a means of effectively going up or down hill. Water will always find its own level, therefore letting water flow into a system of locks allows gradients to be navigated by the vessels using the waterway. The number of locks will depend on how flat or otherwise the land needed to be passed through!
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoTo get up and down things called hills
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Why are locks needed on some canals and not others?
Locks are needed when the waterway flows down/up hill. Instead of going over a waterfall, you 'lower' the vessel using a series of locks.
Why are locks needed on some canals but not not others?
because of the elevation
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Plow, writing, wheel and canals and many others.
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Yes there were other canals built because of the success of the Erie Canal. Canada built one and Ohio built several.
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