Reno (river)

The Reno () is a river of northeastern Italy that starts in the Northern Apennines mountain range in Tuscany but flows mainly through the Emilia-Romagna region. It is one of the longest river in Italy.

Geography
The Reno river has a length of , and a drainage basin with an area of approximately .

Course

The Reno river starts in the Apennines to the northwest of the city of Pistoia, Pistoia province (Tuscany). The Reno is formed by the confluence, at about  above sea level, of two streams: Reno di Prunetta (with its source at an altitude of ) and the Reno di Campolungo.

Its upper course, going to the west, marks the border between Tuscany and Emilia-Romagna. In this part, there are  several artificial reservoirs whose dams are used for hydro-electric energy production.

In Sant'Agostino, the river turns to the southwest and passes west of Bologna, at Casalecchio di Reno.
In its lower course the Reno receives the water of numerous streams, some of which are seasonal (they have water only when it rains)

The Reno was a tributary of the Po until the middle of the 18th century when the course was changed to avoid the frequent floods. It now joins the Adriatic Sea near Casalborsetti, south-east of the Valli di Comacchio, a lagoon in the commune of Comacchio.

The Reno flows through many municipalities; some of them in the lower course, in the Emilia-Romagna region, are:
 Province of Bologna
 Porretta Terme
 Vergato
 Marzabotto
 Sasso Marconi
 Casalecchio di Reno
 Bologna
 Province of Ferrara
 Cento
 Argenta
 Comacchio

Main tributaries 
The main tributaries of the Reno river are:

Left tributaries:
 Silla - 18 km
 Samoggia - 44 km

Right tributaries:
 Limentra di Sambuca- 19.4 km
 Eastern Limentra - 41 km
 Setta - 47 km
 Idice - 80 km
 Savena - 54 km, tributary of the Idice
 Sillaro- 66 km
 Santerno - 103 km, the most important by its length and its discharge of 16 m³/s (570 cu ft/s).
 Senio - 92

Gallery

Related pages
 List of rivers of Italy

References

Other websites

 Gruppo di Stude Pianura del Reno website  
 Biblioteca idraulica italiana 

Category:Rivers of Italy