Aqua Anio Novus was an ancient aqueduct of Rome. Like the Aqua Claudia, it was begun by emperor Caligula in 38 AD and completed in 52 AD by Claudius, who dedicated them both on August 1. Together with the Aqua Anio Vetus, Aqua Marcia and Aqua Claudia, it is regarded as one of the "four great aqueducts of Rome."
Frontinus describes it source as "at the forty-second milestone on the Via Sublacensis in Simbruibe territory, from the Anio River, which flows muddy and turbid even without the bad effect of rain, since it has cultivated and such lands around it, and as a result, quite loose banks". Its flow at the intake was 197,000 cubic metres a day.
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