Tiber

Tiber River
The Tiber in Rome
Country	Italy
Basin
Main source	Mount Fumaiolo 1,268 m (4,160 ft)
River mouth	Tyrrhenian Sea
Basin size	17,375 km2 (6,709 sq mi)
Physical characteristics
Length	406 km (252 mi)
Discharge	Average rate: 239 m3/s (8,400 cu ft/s) (in Rome)

The Tiber (/ˈtaɪbər/, Latin Tiberis, Italian , Italian pronunciation: [ˈteːvere]) is the third-longest river in Italy, rising in the Apennine Mountains in Emilia-Romagna and flowing 406 kilometres (252 mi) through Umbria and Lazio, where it is joined by the Aniene river, to the Tyrrhenian Sea, between Ostia and Fiumicino. It drains a basin estimated at 17,375 square kilometres (6,709 sq mi). The river has achieved lasting fame as the main watercourse of the city of Rome, founded on its eastern banks.

The river rises at Mount Fumaiolo in central Italy and flows in a generally southerly direction past Perugia and Rome to meet the sea at Ostia. Popularly called ("the blond"), in reference to the yellowish colour of its water, the Tiber has heavily advanced at the mouth by about 3 kilometres (2 miles) since Roman times, leaving the ancient port of Ostia Antica 6 kilometres (4 miles) inland. However, it does not form a proportional delta, owing to a strong north-flowing sea current close to the shore, to the steep shelving of the coast, and to slow tectonic subsidence.