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Tiber (Tevere)
River
Fiume tevere.JPG
The Tiber in Rome
Country Italy
Regions Emilia-Romagna, Tuscany, Umbria, Lazio
Provinces Forlì-Cesena, Arezzo, Perugia, Terni, Viterbo, Rieti, Roma
Comuni Pieve Santo Stefano, Sansepolcro, Città di Castello, Umbertide, Orte, Rome
Tributaries
 - left Chiascio, Nera, Aniene
 - right Nestore, Paglia
City Rome
Source Mount Fumaiolo
 - location Forlì-Cesena, Emilia-Romagna, Italy
 - elevation 1,268 m (4,160 ft)
 - coordinates 43°47′13″N 12°04′40″E / 43.78694°N 12.07778°E / 43.78694; 12.07778
Mouth Tyrrhenian Sea
 - location Ostia, Lazio, Italy
 - elevation m (0 ft)
 - coordinates 41°44′26″N 12°14′00″E / 41.74056°N 12.23333°E / 41.74056; 12.23333
Length 405 km (252 mi)
Basin 17,375 km² (6,709 sq mi)
Discharge for Rome
 - average 231 /s (8,158 cu ft/s)

The Tiber (Latin: Tiberis, Italian: Tevere) is a famous river in Italy. It is the third-longest river in the country. It starts in the Apennine Mountains in Emilia-Romagna. From there, it flows mostly through Umbria and Lazio. Finally, it reaches the Tyrrhenian Sea near the towns of Ostia and Fiumicino.

This river is very well-known because the ancient city of Rome was built right on its eastern banks.

Where is the Tiber River located?

The Tiber River is about 405 km (252 mi) long. Its drainage basin (the area of land where water collects and flows into the river) covers about 17,375 km2 (6,709 sq mi). This is almost 5% of Italy's total land area.

It is the third longest river in Italy. Only the Po and the Adige rivers are longer. When it comes to the size of its drainage basin, the Tiber is the second largest, after the Po.

River Length (km) Watershed (km²)
Po 652 74,970
Adige 410 12,200
Tiber 405 17,375

How does the Tiber River flow?

The Tiber River begins near a small town called Balze. This town is in the Forlì-Cesena province, on the southern side of Monte Fumaiolo. The source of the river is made up of two springs. These springs are only 10 m (33 ft) apart in a forest on the mountain. They are at a high elevation of 1,268 m (4,160 ft) above sea level.

The Tiber flows through Emilia-Romagna for about 4 kilometres (2.5 miles). Then it enters Tuscany, passing through Pieve Santo Stefano and Sansepolcro. Between these two places, there is a dam that creates a large reservoir. This reservoir is called Montedoglio Lake (Italian: Lago di Montedoglio).

From there, the river flows through a wide flat area known as Val Tiberina. It then enters the Perugia province in Umbria. Here, it flows past the towns of Città di Castello and Umbertide.

South of Torgiano, the Chiascio river joins the Tiber from its left side. Later, at the Marsciano dam, the Nestore river joins from the right side. Soon after, another right tributary, the Paglia, also flows into the Tiber.

The river then forms the border between the Umbria region (province of Terni) and the Lazio region (province of Viterbo). Near the city of Orte, its most important tributary, the Nera river, joins from the left.

The Tiber continues through the Lazio region, passing through the provinces of Viterbo, Rieti, and Rome. The Aniene river joins it before it flows right through the heart of Rome. Finally, the Tiber empties into the Tyrrhenian Sea between Ostia and Fiumicino.

What are the Tiber's main branches?

The Tiber River has several important tributaries, which are smaller rivers or streams that flow into it.

Tributary Length Discharge
Rivers joining from the left
Chiascio 82 km 19 m³/s
Nera 116 km 168 m³/s
Aniene 99 km 35 m³/s
Rivers joining from the right
Nestore 64 km 11 m³/s
Paglia 86 km 11 m³/s

How much water flows in the Tiber?

The average amount of water flowing out of the Tiber River into the sea is about 240 m3/s (8,500 cu ft/s). This is measured at its mouth.

The table below shows the average amount of water (in cubic meters) that flowed through the Tiber in Rome each month during 2011. You can see how the water level changes throughout the year.

644 548 491 316 205 175 97 84 91 324 897 840
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dic

Pictures of the Tiber River

Comune di Fiumicino and the Tiber River, near Rome
Comune di Fiumicino and the mouth of the Tiber, May 2013

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