Aqua Claudia


Aqua Claudia, was an ancient Roman aqueduct that, like the Aqua Anio Novus, was begun by Emperor Caligula in 38 AD and finished by Emperor Claudius in 52 AD.
Together with Aqua Anio Novus, Aqua Anio Vetus, and Aqua Marcia, it is regarded as one of the "four great aqueducts of Rome".

Route

Its mainsprings, the Caeruleus and Curtius, were situated 300 paces to the left of the 38th milestone of the Via Sublacensis.
The total length was approximately, most of which was underground. The flow was about in 24 hours. Directly after its filtering tank, near the seventh mile of the Via Latina, it finally emerged onto arches, which increase in height as the ground falls toward the city, reaching over.
It is one of the two ancient aqueducts that flowed through the Porta Maggiore, the other being the Anio Novus. It is described in some detail by Frontinus in his work published in the later 1st century, De aquaeductu.
Nero extended the aqueduct with the Arcus Neroniani to the Caelian hill and Domitian further extended it to the Palatine when the Aqua Claudia could provide all 14 Roman districts with water.

Repairs

The aqueduct went through at least two major repairs. Tacitus suggests that the aqueduct was in use by AD 47. An inscription from Vespasian suggests that Aqua Claudia was used for ten years, then failed and was out of use for nine years. The first repair was done by Emperor Vespasian in 71 AD; it was repaired again in 81 AD by Emperor Titus.
Aqua Claudia maintained its structure and appearance for so long partly because of Roman concrete.
The church of San Tommaso in Formis was later built into the side of the aqueduct.

Gallery