Canal - Wikipedia 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
What is a canal? - NOAAs National Ocean Service A canal is a human-made waterway that allows boats and ships to pass from one body of water to another Canals are also used to transport water for irrigation and other human uses
Canals and inland waterways | Description, History, Types . . . The first lock was not built on an English canal until the 16th century, and the canal era proper dates from the construction of the Bridgewater Canal to carry coal from Worsley to Manchester in the 18th century by the engineer James Brindley
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