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Concept
Barbegal aqueduct and mills
Summary
The Barbegal aqueduct and mills was a Roman watermill complex located on the territory of the commune of Fontvieille, Bouches-du-Rhône, near the town of Arles, in southern France. The complex has been referred to as "the greatest known concentration of mechanical power in the ancient world" and the 16 overshot wheels are considered to be the largest ancient mill complex.
Another similar mill complex existed on the Janiculum in Rome, and there are suggestions that further such complexes existed at other major Roman sites, such as Amida (Mesopotamia).
The Barbegal site is located 12 kilometres east northeast of Arles near Fontvieille, where the Arles aqueduct passed near a steep escarpment. The mills consisted of 16 water wheels in two parallel sets of eight descending a steep hillside. There are substantial masonry remains of the water channels and foundations of the individual mills, together with a staircase rising up the hill upon which the mills were built. The mills operated from the beginning of the 2nd century until about the end of the 3rd century. The capacity of the mills has been estimated at 4.5 tons of flour per day, enough to supply bread for as many as 10,000 or perhaps even 30–40,000 inhabitants of Arelate at that time. It is thought that the wheels were overshot water wheels with the outflows driving successive wheels to the base of the hill.
The Roman aqueducts that fed the mills were also built to supply water to the town of Arles (then called Arelate). The two aqueducts joined just north of the mill complex and a sluice controlled the water supply to the complex.
Barbegal mill 06.jpg|Mill
Barbegal aqueduct 04.jpg|Aqueduct
Barbegal mill 05.jpg|Remains of the complex
Barbegal mill 02.jpg|The sixteen overshot wheels
Musée de l'Arles antique, Arles, France (16168385326).jpg|Model of the water mills at Barbegal in Musée de l'Arles antique
Vertical water mills were well known to the Romans, being described by Vitruvius in his De architectura of 25 BC, and mentioned by Pliny the Elder in his Naturalis Historiæ of 77 AD.
Official source
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Related concepts (13)
Ancient Roman technology
Roman technology is the collection of antiques, skills, methods, processes, and engineering practices which supported Roman civilization and made possible the expansion of the economy and military of ancient Rome (753 BC – 476 AD). The Roman Empire was one of the most technologically advanced civilizations of antiquity, with some of the more advanced concepts and inventions forgotten during the turbulent eras of Late Antiquity and the early Middle Ages.
Reverse overshot water wheel
Frequently used in mines and probably elsewhere (such as agricultural drainage), the reverse overshot water wheel was a Roman innovation to help remove water from the lowest levels of underground workings. It is described by Vitruvius in his work De architectura published circa 25 BC. The remains of such systems found in Roman mines by later mining operations show that they were used in sequences so as to lift water a considerable height.
Ausonius
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