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In Ancient Rome, the Aqua Alsietina (sometimes called Aqua Augusta) was the earlier of the two western Roman aqueducts (with the aqua Traiana), erected sometime around 2 BC, during the reign of emperor Augustus. It was the only water supply for the Transtiberine region, on the right bank of the river Tiber until the Aqua Traiana was built.

The length of this mainly subterranean aqueduct was 22000 paces (about 32.8 km) and it had arches over 358 paces (about 0.53 km).

This aqueduct acquired water mainly from Lacus Alsietinus (a small lake in southern Etruria, currently known as Lago di Martignano) and some from Lacus Sabatinus (Lago di Bracciano). This water was not suitable for drinking, however, and Augustus used it to fill his naumachia in Trastevere to allow the public to enjoy sham naval battles. The water surplus was used for the irrigation of Caesar's horti (gardens) and for the irrigation of fields.

Sextus Julius Frontinus ascribes only a meager volume to the Aqua Alsietina in about 97.

It was joined by the aqua Traiana, probably in 109 AD, to share a common lower path into Rome, though their routes are uncertain.

Some traces of this aqueduct were discovered in 1720. An inscribed stone slab was found in 1887 near the Via Claudia, the only ancient written record of the Aqua Alsietina.

The fountain of the Acqua Paola in Rome, built under Pope Paul V announces on its triumphal arch that "Paul V restored the ancient ducts of the Aqua Alsietina". But this was wrong, in fact it was a reconstruction of the Aqua Traiana. But that was unknown by that time.

See also

• List of aqueducts in the city of Rome
• List of aqueducts in the Roman Empire
• List of Roman aqueducts by date
• Parco degli Acquedotti
• Ancient Roman technology
• Roman engineering

References

1. Frontinus, De aquaeductu
2. Frontinus, De aquaeductu

• Samuel Ball Platner - A Topographical Dictionary of Ancient Rome, London: Oxford University Press, 1929
• Rabun Taylor (July 1997). "Torrent or Trickle? The Aqua Alsietina, the Naumachia Augusti, and the Transtiberim". American Journal of Archaeology. 101 (3): 465–492. doi:10.2307/507107. JSTOR 507107. S2CID 193075395.

External links

• Aqua Alsietina
• Photo of the ruins

v t e Roman aqueducts
Croatia	Aqueduct of Diocletian
France	Aqueduct of the Gier Aqueduct of Luynes Barbegal aqueduct Pont du Gard
Germany	Eifel Aqueduct
Italy	Aqua Alexandrina Aqua Alsietina Aqua Anio Novus Aqua Anio Vetus Aqua Appia Aqua Augusta (Naples) Aqua Augusta (Rome) Aqua Crabra Aqua Claudia Aqua Julia Aqua Marcia Aqua Tepula Aqua Traiana Aqua Virgo Caldaccoli Aqueduct Pont d'Aël
Jordan	Gadara Aqueduct
Luxembourg	Raschpëtzer Qanat
Spain	Aqueduct of Segovia Aqüeducte de s'Argamassa Acueducto de los Milagros Caños de Carmona Les Ferreres Aqueduct Roman aqueducts of Toledo San Lázaro Roman aqueduct
Tunisia	Zaghouan Aqueduct
Turkey	Aqueduct of Valens Ballıgerme Lamas Aqueduct Olba Aqueduct
United Kingdom	Dolaucothi Gold Mines
List of Roman aqueducts

41°53′12″N 12°28′10″E / 41.88667°N 12.46944°E / 41.88667; 12.46944

• Ancient Roman aqueducts in Rome