The Reno () is a river of
Emilia-Romagna
Emilia-Romagna (, , both , ; or ; ) is an Regions of Italy, administrative region of northern Italy, comprising the historical regions of Emilia (region), Emilia and Romagna. Its capital is Bologna. It has an area of , and a population of 4.4 m ...
and
Tuscany
Tuscany ( ; ) is a Regions of Italy, region in central Italy with an area of about and a population of 3,660,834 inhabitants as of 2025. The capital city is Florence.
Tuscany is known for its landscapes, history, artistic legacy, and its in ...
, northern
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
. At ,
[Reno]
''Enciclopedia on line'', Istituto Treccani
Institute Giovanni Treccani for the publication of the Italian Encyclopedia (), also known as Treccani Institute or simply Treccani, is a cultural institution of national interest, active in the publishing field, founded by Giovanni Treccani ...
. it is the tenth longest river in Italy (the sixth longest of those that flow directly into the sea) and the most important of the region apart from the
Po.
It has a
drainage basin
A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...
of .
[ The annual average discharge at the mouth is about ; at the point where the river flows into the Pianura Padana (Po River Plain), it amounts to about . The highest values registered at its outflow into the Po Plain have approached , but the typical value when the river is in flood is around .][ The minimal discharge reported is .
]
Name
The name of the river has the same etymology as the name of the Rhine
The Rhine ( ) is one of the List of rivers of Europe, major rivers in Europe. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms part of the Swiss-Liechtenstein border, then part of the Austria–Swit ...
, as both derive from the same Celtic hydronym
''Rēnos'', the Reno basin being situated within Gallia Cisalpina, in what was the territory of the Boii
The Boii (Latin language, Latin plural, singular ''Boius''; ) were a Celts, Celtic tribe of the later Iron Age, attested at various times in Cisalpine Gaul (present-day Northern Italy), Pannonia (present-day Austria and Hungary), present-day Ba ...
before the Roman conquest of 220 BC. In Italian
Italian(s) may refer to:
* Anything of, from, or related to the people of Italy over the centuries
** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom
** Italian language, a Romance languag ...
both rivers are called ''Reno'', and in Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
both were called ''Rhenus''.
In 43 BC the pact establishing the Second triumvirate
The Second Triumvirate was an extraordinary commission and magistracy created at the end of the Roman republic for Mark Antony, Lepidus, and Octavian to give them practically absolute power. It was formally constituted by law on 27 November ...
was signed on an islet of the river near ''Bononia'' (Bologna).
The river is mentioned by Dante Alighieri
Dante Alighieri (; most likely baptized Durante di Alighiero degli Alighieri; – September 14, 1321), widely known mononymously as Dante, was an Italian Italian poetry, poet, writer, and philosopher. His ''Divine Comedy'', originally called ...
in Canto XVIII of his '' Inferno'' where he defines the Bolognesi as those "living between the Savena
The Savena () is a river in the Tuscany and Emilia-Romagna regions of Italy. The source of the river is in the province of Florence west of Firenzuola in the Appennino Tosco-Emiliano mountains. The river flows north into the province of Bologna ...
and the Reno".
The Reno gave its name to a department of the Cispadane Republic (1796–1797), the Cisalpine Republic
The Cisalpine Republic (; ) was a sister republic or a client state of France in Northern Italy that existed from 1797 to 1799, with a second version until 1802.
Creation
After the Battle of Lodi in May 1796, Napoleon Bonaparte organized two ...
(1797–1802), the Italian Republic
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
(1802–1805) and the Kingdom of Italy
The Kingdom of Italy (, ) was a unitary state that existed from 17 March 1861, when Victor Emmanuel II of Kingdom of Sardinia, Sardinia was proclamation of the Kingdom of Italy, proclaimed King of Italy, until 10 June 1946, when the monarchy wa ...
(1805–1814).[
]
Geography
The river rises at the north side of the Apennine Mountains
The Apennines or Apennine Mountains ( ; or Ἀπέννινον ὄρος; or – a singular with plural meaning; )Latin ''Apenninus'' (Greek or ) has the form of an adjective, which would be segmented ''Apenn-inus'', often used with nouns s ...
at about above sea level near the village Prunetta in the province of Pistoia (Tuscany
Tuscany ( ; ) is a Regions of Italy, region in central Italy with an area of about and a population of 3,660,834 inhabitants as of 2025. The capital city is Florence.
Tuscany is known for its landscapes, history, artistic legacy, and its in ...
).[ Its upper course marks the border between Tuscany and Emilia-Romagna and it flows through a forested area crossed by the Pistoia–Bologna railway.][ Its upper valley is part of the ]Natura 2000
Natura 2000 is a network of nature protection areas in the territory of the European Union. It is made up of Special Areas of Conservation and Special Protection Areas designated under the Habitats Directive and the Birds Directive, respectiv ...
protected area Tre Limentre - Reno.Natura 2000 - Standard data form Tre Limentre - Reno
European Environment Agency, December 2022. The upper basin is characterized by several reservoirs which are used for hydro-electric energy production.[ The power produced in the basin of the Reno basin is second, for Apennine rivers, only to that of the Nera- Velino in ]Umbria
Umbria ( ; ) is a Regions of Italy, region of central Italy. It includes Lake Trasimeno and Cascata delle Marmore, Marmore Falls, and is crossed by the Tiber. It is the only landlocked region on the Italian Peninsula, Apennine Peninsula. The re ...
.
At Casalecchio di Reno, west of Bologna
Bologna ( , , ; ; ) is the capital and largest city of the Emilia-Romagna region in northern Italy. It is the List of cities in Italy, seventh most populous city in Italy, with about 400,000 inhabitants and 150 different nationalities. Its M ...
, it leaves the mountains and enters the Po Plain. The Reno was a tributary of the Po near Ferrara
Ferrara (; ; ) is a city and ''comune'' (municipality) in Emilia-Romagna, Northern Italy, capital of the province of Ferrara. it had 132,009 inhabitants. It is situated northeast of Bologna, on the Po di Volano, a branch channel of the main ...
until the second half of the 18th century when its course was diverted to lessen the risk of devastating floods. It now joins the Adriatic Sea
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Se ...
near Casal Borsetti, south-east of the Valli di Comacchio.[
The most important tributaries include the Limentra orientale, ]Silla
Silla (; Old Korean: wikt:徐羅伐#Old Korean, 徐羅伐, Yale romanization of Korean, Yale: Syerapel, Revised Romanization of Korean, RR: ''Seorabeol''; International Phonetic Alphabet, IPA: ) was a Korean kingdom that existed between ...
, Setta, Samoggia, Idice, Sillaro, Santerno and Senio.[
]
Footnotes
External links
Historical and geographical info
{{Coord missing, Italy
Rivers of Italy
Rivers of the Province of Ferrara
Rivers of the Province of Pistoia
Rivers of the Metropolitan City of Bologna
Rivers of the Apennines