This article lists ancient Roman aqueducts in the city of Rome.
Introduction
In order to meet the massive water needs of its huge population, the city of Rome was eventually supplied with 11 aqueducts by 226 AD, which were some of the city's greatest engineering achievements.
The total discharge of all aqueducts combine was 1,127,220 m3 (297,780,000 US gal) a day[1]: 347 , mostly sourced from the Aniene river and the Apennine Mountains[citation needed], serving a million citizens[citation needed]. Most of our information about Roman aqueducts come from statistics compiled in the late 1st century AD by Sextus Julius Frontinus, the Curator Aquarum.
These estimates may not have considered water loss. Modern engineers have questioned the validity of these figures and measured Anio Novuslimestone deposits to estimate the average wetted perimeter and surface roughness corresponding to only 2/3 of the flow figure given below.[2]
^Sturgeon, Clair; Shidlauski, Kristina (2015). "Illinois team solves ancient Roman water supply mystery". CEE. Fall 2015. Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign: 24.
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Frontinus (1925). Aqueducts of Rome. Translated by Bennett, C. E.; McElwain, Mary B. Cambridge, MA: Harvard University Press.