The Tagus ( ; es, Tajo ; pt, Tejo ; see below) is the longest river in the

Iberian Peninsula The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, def ...

. The river rises in the

Montes Universales Montes Universales is a long mountain range in the southeastern end of the Iberian System. Its highest point is the 1,935 m high summit known as Caimodorro. The 1,830 m high Muela de San Juan is another important peak. Administratively, the Mon ...

near

Teruel Teruel () is a city in Aragon, located in eastern Spain, and is also the capital of Teruel Province. It has a population of 35,675 in 2014 making it the least populated provincial capital in the country. It is noted for its harsh climate, with ...

, in mid-eastern

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

, flows , generally west with two main south-westward sections, to empty into the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

in Lisbon. Its

drainage basin A drainage basin is an area of land where 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, ...

covers – exceeded in the peninsula only by the

Douro The Douro (, , ; es, Duero ; la, Durius) is the highest-flow river of the Iberian Peninsula. It rises near Duruelo de la Sierra in Soria Province, central Spain, meanders south briefly then flows generally west through the north-west part o ...

. The river is highly used. Several dams and diversions supply drinking water to key population centres of central Spain and Portugal; dozens of hydroelectric stations create power. Between dams it follows a very constricted course, but after Almourol, Portugal it has a wide

alluvial Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. All ...

valley, prone to flooding. Its mouth is a large estuary culminating at the major

port A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as H ...

, and Portuguese capital, Lisbon. The source is specifically: in political geography, at the Fuente de García in the Frías de Albarracín municipality; in physical geography, within the notably high range, the

Sistema Ibérico The Iberian System ( es, Sistema Ibérico, ) is one of the major systems of mountain ranges in Spain. It consists of a vast and complex area of mostly relatively high and rugged mountain chains and massifs located in the central region of th ...

(Iberian System), of the Sierra de Albarracín Comarca. All the major tributaries are

right bank In geography, a bank is the land alongside a body of water. Different structures are referred to as ''banks'' in different fields of geography, as follows. In limnology (the study of inland waters), a stream bank or river bank is the terrai ...

, which is locally to the north. The river flows in Spain, along the two countries' border and in

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...

. The main cities the rivers passes through consecutively are

Aranjuez Aranjuez () is a city and municipality of Spain, part of the Community of Madrid. Located in the southern end of the region, the main urban nucleus lies on the left bank of Tagus, a bit upstream the discharge of the Jarama. , the municipality h ...

, Toledo and

Talavera de la Reina Talavera de la Reina () is a city and municipality of Spain, part of the autonomous community of Castile–La Mancha. Its population of 83,303 makes it the second most populated municipality of the province of Toledo and the fourth largest in the ...

in Spain, and

Abrantes Abrantes () is a municipality in the central Médio Tejo subregion of Portugal. The population was 39,325, in an area of . The municipality includes several parishes divided by the Tagus River, which runs through the middle of the municipalit ...

, Santarém,

Almada Almada () is a city and a municipality in Portugal, located on the southern margin of the Tagus River, on the opposite side of the river from Lisbon. The two cities are connected by the 25 de Abril Bridge. The population in 2011 was 174,030, in a ...

and Lisbon in Portugal. The Spanish capital,

Madrid Madrid ( , ) is the capital and most populous city of Spain. The city has almost 3.4 million inhabitants and a Madrid metropolitan area, metropolitan area population of approximately 6.7 million. It is the Largest cities of the Europ ...

, lies in the upper

Course

In Spain

The first notable city on the Tagus is

Sacedón Sacedón is a city located in the province of Guadalajara, Castile-La Mancha, Spain. According to the 2007 census A census is the procedure of systematically acquiring, recording and calculating information about the members of a given popul ...

. Below

it receives the combined flow of the

Jarama Jarama () is a river in central Spain. It flows north to south, and passes east of Madrid where the El Atazar Dam is built on a tributary, the Lozoya River. It flows into the river Tagus in Aranjuez. The Manzanares is a tributary of the Jaram ...

Henares The Henares () is a river in Spain, tributary of the Jarama. It has its source in the Sierra Ministra, in the village of Horna, near Sigüenza, in the province of Guadalajara. Its tributaries are the Torote, the Sorbe, the Cañamares, the S ...

, Algodor and

Tajuña The Tajuña (; from the Latin ''Tagonius'') is a river in central Spain, flowing through the provinces of Guadalajara and Madrid. It is a tributary of the river Jarama which in turn is a tributary of the Tagus. It rises in the Sierra de Solorio, n ...

. Below Toledo it receives the Guadarrama River. Above

it receives the Alberche. At Valdeverdeja is the upper end of the long upper reservoir, the ''Embalse de Valdecañas'', beyond which are the '' Embalse de Torrejon'', into which flow the Tiétar, and the lower reservoir, the

Alcántara Dam The Alcántara Dam, also known as the José María de Oriol Dam, is a buttress dam on the Tagus River near Alcántara in the province of Cáceres, Spain. It is named after the politician and captain of the Spanish electricity industry José Mar� ...

into which flows the Alagón at the lower end. A canal and aqueduct are between the Tagus and the

Segura Segura (, ; la, Thader; ar, شقورة, Shaqūrah, or ) is a medium-sized river in southeastern Spain. It has its source in the Sierra de Segura. Course The river begins at Santiago Pontones ( province of Jaén), passes Calasparra, C ...

for the Tagus-Segura Water Transfer. The Sanctuary of Christ the King and the Tagus River

In Portugal

After forming the border it enters Portugal, passing Vila Velha de Ródão,

Constância Constância () is a municipality in Santarém District in Portugal. The population in 2011 was 4,056, in an area of 80.37 km². The present Mayor is António Manuel dos Santos Mendes, elected by the Unitary Democratic Coalition. The municip ...

Entroncamento Entroncamento () is a Portuguese municipality in district of Santarém in the Médio Tejo Subregion (''Middle Tagus'') of the Centro Region. The population in 2011 was 20,206, in an area of 13.73 km². Situated in the Ribatejo, it benefits ...

, Santarém and

Vila Franca de Xira Vila Franca de Xira () is a city and municipality in the Lisbon District in Portugal. The population in 2021 was 137,659, in an area of 318.19 km2. Situated on both banks of the Tagus River, 32 km north-east of the Portuguese capital ...

at the head of the long narrow estuary, which has Lisbon at its mouth. The estuary is protected by the Tagus Estuary Natural Reserve. Two bridges span the river at Lisbon: the

Vasco da Gama Bridge The Vasco da Gama Bridge ( pt, Ponte Vasco da Gama; ) is a cable-stayed bridge flanked by viaducts that spans the Tagus River in Parque das Nações in Lisbon, the capital of Portugal. It is the second longest bridge in Europe, after the Cri ...

– the second longest bridge in Europe, with a total length of – and the

25 de Abril Bridge The 25 de Abril Bridge ( pt, Ponte 25 de Abril, 25th of April Bridge, ) is a suspension bridge connecting the city of Lisbon, capital of Portugal, to the municipality of Almada on the left (south) bank of the Tagus river. It has a total len ...

. The Port of Lisbon, straddling its mouth, is one of Europe's busiest. The Portuguese Alentejo region and the former

Ribatejo Province The Ribatejo () is the most central of the traditional provinces of Portugal, with no coastline or border with Spain. The region is crossed by the Tagus river (''Ribatejo'' translates to "upper Tagus", or more precisely, "up the Tagus" relativ ...

take their names from the river: Alentejo, from ''além Tejo'' ("beyond the Tejo") and Ribatejo probably from ''arriba Tejo'' (an archaic phrase for "upper Tejo"). However, the Spanish word means "riverside", or "riviera", implying that Ribatejo can also mean very generically "the side of Tejo". Many instances of towns in Spain have this prefix.

Name

The river's Latin name is ''Tagus''. While the etymology is unclear, the most probable etymological origin for the hydronym ''Tagus'' is Indo-European *(s)tag- ('to drip'). It is known under different names in the languages of Iberia: , , gl, Río Texo, , pt, Tejo, es, Tajo. It is known in

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...

as and

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

as (''Tágos'').

Geology

The lower Tagus is on a

fault line In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic ...

. Slippage along it has caused numerous

earthquake An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, fr ...

s, the major ones being those of 1309,

1531 Year 1531 ( MDXXXI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. Events January–June * January 26 – Lisbon, Portugal is hit by an earthquake, in which thousands die. * Fe ...

and

1755 Events January–March * January 23 (O. S. January 12, Tatiana Day, nowadays celebrated on January 25) – Moscow University is established. * February 13 – The kingdom of Mataram on Java is divided in two, creating th ...

History

The Pepper Wreck, properly the wreck of the ''Nossa Senhora dos Mártires'', is a shipwreck located and excavated at the mouth of the Tagus between 1996 and 2001. The river had strategic value to the Spanish and Portuguese empires, as it guarded the approach to Lisbon. In 1909, the region experienced a strong and damaging

In popular culture

A major river, the Tagus is brought to mind in the songs and stories of the Portuguese. A popular

fado Fado (; "destiny, fate") is a music genre that can be traced to the 1820s in Lisbon, Portugal, but probably has much earlier origins. Fado historian and scholar Rui Vieira Nery states that "the only reliable information on the history of fado was ...

song in Lisbon notes that, while people get older, the Tagus remains young (“My hair getting white, the Tagus is always young”). The author,

Fernando Pessoa Fernando António Nogueira Pessoa (; 13 June 1888 – 30 November 1935) was a Portuguese poet, writer, literary critic, translator, publisher, and philosopher, described as one of the most significant literary figures of the 20th century and ...

, wrote a poem that begins:

The Tagus is more beautiful than the river that flows through my village.
But the Tagus is not more beautiful than the river that flows through my village...

Richard Crashaw Richard Crashaw (c. 1613 – 21 August 1649) was an English poet, teacher, High Church Anglican cleric and Roman Catholic convert, who was one of the major metaphysical poets in 17th-century English literature. Crashaw was the son of a famous ...

(died 1649) wrote a poem "Saint Mary Magdalene, or the Weeper". This refers to the "Golden" Tagus as wanting Mary Magdalene's silver tears. In classical poetry, the Tagus was famous for its gold-bearing sands (the catalogued works of:

Catullus Gaius Valerius Catullus (; 84 - 54 BCE), often referred to simply as Catullus (, ), was a Latin poet of the late Roman Republic who wrote chiefly in the neoteric style of poetry, focusing on personal life rather than classical heroes. His ...

29.19;

Ovid Pūblius Ovidius Nāsō (; 20 March 43 BC – 17/18 AD), known in English as Ovid ( ), was a Roman poet who lived during the reign of Augustus. He was a contemporary of the older Virgil and Horace, with whom he is often ranked as one of the th ...

's ''Amores'' 1.15.34;

Juvenal Decimus Junius Juvenalis (), known in English as Juvenal ( ), was a Roman poet active in the late first and early second century CE. He is the author of the collection of satirical poems known as the '' Satires''. The details of Juvenal's life ...

's ''Satires'' 3.55; and others).

References

{{Authority control Rivers of Spain Rivers of Portugal International rivers of Europe Rivers of Castilla–La Mancha Rivers of Extremadura Rivers of the Community of Madrid Geography of Lisbon Belém (Lisbon) Portugal–Spain border