before_revision: The Alter Strom, in the sea resort of Warnemnde, Germany. The Royal Canal in Ireland. Small boat canals such as the Basingstoke Canal fuelled the industrial revolution in much of Europe and the United States. Bridge on the Naviglio Grande, in the town of Cassinetta di Lugagnano, in Italy Canal in Broek in Waterland, Netherlands. Canal in Venice. Canals are waterways channels, or artificial waterways, for water conveyance, or to service water transport vehicles. They may also help with irrigation. It can be thought of as an artificial version of a river. Canals carry free surface flow under atmospheric pressure  . In most cases, the engineered works will have 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 is also known as a navigation when it parallels a river and shares part of its waters 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. In contrast, a canal cuts across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation.  Many canals have been built at elevations towering over valleys and other water ways crossing far below .
after_revision: The Alter Strom, in the sea resort of Warnemnde, Germany. The Royal Canal in Ireland. Small boat canals such as the Basingstoke Canal fuelled the industrial revolution in much of Europe and the United States. Bridge on the Naviglio Grande, in the town of Cassinetta di Lugagnano, in Italy Canal in Broek in Waterland, Netherlands. Canal in Venice. Canals are waterway channels, or artificial waterways, for water conveyance, or for servicing water transport vehicles. They carry free 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 river and shares part of its waters 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 .
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edit_actions: may also help with irrigation. It can be thought of as an artificial version of a river. Canals
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edit_actions: is also known as a navigation
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edit_actions: In contrast, a canal cuts
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edit_actions: The best-known example of such a canal is the Panama Canal.
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