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Aqueducts are man-made channels that can be made from various materials and constructed in different ways. They carry water for irrigation, transportation, and to supply large populations with clean water. Many ancient aqueducts still exist, and modern ones are built with pipes.
An aqueduct is an artificial channel through which water is transferred from one place to another. Aqueducts can be made from many different types of materials, such as brick, concrete, metal, or wood, and constructed in a variety of ways, such as as tunnels, canals, or bridges. An aqueduct can carry a small amount of water as well as an amount large enough to carry jet skis, and water can be moved through the use of pumps or simply by gravity.
The main use of aqueducts is to carry clean water to a large population of people, for example in a city, but they are also used to irrigate crops where there is naturally little or no water. Yet another use of the aqueduct is for transportation as they can allow large barges to pass over difficult terrain such as valleys and ravines. There are also side benefits to using aqueducts, for example they can help control flooding.
It is unknown when or where the first aqueducts were built, but many still remain from ancient times. In particular, in the city of Rome, some aqueducts still exist and those that were once in operation were used to transport millions of liters of water through the Roman colonies every day. Other ancient cities that used the aqueduct were Jerusalem and Athens. In the latter city there was an aqueduct which was a tunnel and was 4200 feet long and bored by hand. In more recent history, London built its first aqueduct in 1609, a 38-mile-long river that brought water to the city’s growing population.
Aqueducts are still in use today, but most are built with pipes and other materials. In New York City in 1842, the Croton Aqueduct used iron pipes to carry water across the Harlem River on a viaduct. Other similar large aqueducts followed in various cities around the world, especially in Great Britain. One notable modern aqueduct is the Colorado Aqueduct in Southern California which carries water across the desert from the Colorado River. Another aqueduct in California is actually 685 miles long. Many large-scale aqueducts are now in operation, serving to transport water to growing populations of people around the world.
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