Aniene

Aniene
An 1886 German map of the settlements, roads, and aqueducts around ancient Rome. The Aniene is the principal left-hand tributary of the Tiber, joining it in northern Rome.
Location
Country	Italy
Physical characteristics
Source
• location	Filettino
• elevation	1,075 m (3,527 ft)
Mouth
• location	Tiber (Rome, ponte Salario)
• coordinates	41°56′30″N 12°30′07″E / 41.941745°N 12.50181°E / 41.941745; 12.50181
Length	99 km (62 mi)
Basin size	1,414 km2 (546 sq mi)
Basin features
Progression	Tiber→ Tyrrhenian Sea

The Aniene (pronounced [aˈnjɛːne]; Latin: Aniō), formerly known as the Teverone,^[1] is a 99-kilometer (62 mi) river in Lazio, Italy. It originates in the Apennines at Trevi nel Lazio and flows westward past Subiaco, Vicovaro, and Tivoli to join the Tiber in northern Rome. It formed the principal valley east of ancient Rome and became an important water source as the city's population expanded. The falls at Tivoli were noted for their beauty.^[1] Historic bridges across the river include the Ponte Nomentano, Ponte Mammolo, Ponte Salario, and Ponte di San Francesco, all of which were originally fortified with towers.