| | Aqueduct - Biocrawler (Site not responding. Last check: 2007-10-02) |
 | | Roman-style aqueducts were used as early as the 7th century BC, when the Assyrians built a limestone aqueduct 30 feet (10 m) high and 900 feet (300 m) long to carry water across a valley to their capital city, Nineveh; the full length of the aqueduct ran for 50 miles (80 km). |
 | | The longest Roman aqueduct was the one built in the 2nd century AD to supply Carthage in what is now Tunisia, which ran for 87 miles (141 km). |
 | | The Catskill Aqueduct carries water to New York over a distance of 120 miles (190 km), but it is dwarfed by aqueducts in the far west of the country, most notably the Colorado River Aqueduct which supplies the Los Angeles area with water from the Colorado River nearly 250 miles (400 km) to the east. |
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