Technology
The ancient Romans also had a complex system of aqueducts, which were used to transport water across long distances. The first Roman aqueduct was built in 312 BCE. The eleventh and final ancient Roman aqueduct was built in 226 CE. Put together, the Roman aqueducts extended over 450 kilometers, but less than seventy kilometers of this was above ground and supported by arches.
Cochituate Aqueduct
The aqueduct formed a key link in Boston's first major water supply system. Its genesis dates to 1845, when a Sudbury River tributary was impounded to form Lake Cochituate in Natick. The artificial lake, with of watershed, of storage, and yield of of water per day, became the cornerstone of Boston's public water system.