what is internal waterways
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Despite modern technological advances in air and ground transportation, inland waterways continue to fill a vital role and, in many areas, to grow substantially. This article traces the history of canal building from the earliest times to the present day and describes both the constructional and operational engineering techniques used and the major inland waterways and networks throughout the world.
Transport by inland waterways may be by navigable rivers or those made navigable by canalization (dredging and bank protection) or on artificial waterways called canals. Many inland waterways are multipurpose, providing drainage, irrigation, water supply, and generation of hydroelectric power as well as navigation. The lay of the land (topography) and particularly changes in water levels require that many rivers be regulated to make them fully navigable, thus enabling vessels to proceed from one water level to another. The chief regulating method is the lock, the development of which contributed significantly to the Industrial Revolution and the development of modern industrial society.
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