Tagus River estuary

E111382

estuary natural harbor tidal estuary

The Tagus River estuary is a large tidal estuary in western Portugal where the Tagus River meets the Atlantic Ocean, forming a broad natural harbor by Lisbon and supporting rich ecosystems and major maritime activities.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (13)

Label	Occurrences
Tagus estuary	22
Tagus River estuary canonical	20
Tagus River waterfront	9
Tagus Estuary	8
South Bank of Tagus River	1
South bank of the Tagus River	1
Tagus Estuary Natural Reserve	1
Tagus River estuary corridor	1
Tagus River floodplain	1
Tagus River navigation channel	1
Tagus River waterfront (nearby)	1
Tagus estuary area	1
north bank of the Tagus River	1

How this entity was disambiguated

This entity first appeared as the object of triple T876875 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Tagus River estuary
Context triple: [PTLIS, locatedOn, Tagus River estuary]

A. Tagus River
The Tagus River is the longest river on the Iberian Peninsula, flowing from central Spain through Portugal to the Atlantic Ocean.
B. Ebro Delta
The Ebro Delta is a large wetland and river delta in northeastern Spain known for its rich biodiversity, rice fields, and important bird habitats along the Mediterranean coast.
C. Manzanares River
The Manzanares River is a modest river in central Spain that flows through the city of Madrid and has historically shaped its landscape and development.
D. Guadalquivir River
The Guadalquivir River is one of Spain’s major rivers, flowing through Andalusia and the city of Seville before emptying into the Atlantic Ocean.
E. Henares River
The Henares River is a tributary of the Jarama in central Spain that flows through Castilla–La Mancha and the Community of Madrid, historically supporting towns such as Alcalá de Henares.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Tagus River estuary
Target entity description: The Tagus River estuary is a large tidal estuary in western Portugal where the Tagus River meets the Atlantic Ocean, forming a broad natural harbor by Lisbon and supporting rich ecosystems and major maritime activities.

A. Tagus River
The Tagus River is the longest river on the Iberian Peninsula, flowing from central Spain through Portugal to the Atlantic Ocean.
B. Ebro Delta
The Ebro Delta is a large wetland and river delta in northeastern Spain known for its rich biodiversity, rice fields, and important bird habitats along the Mediterranean coast.
C. Manzanares River
The Manzanares River is a modest river in central Spain that flows through the city of Madrid and has historically shaped its landscape and development.
D. Guadalquivir River
The Guadalquivir River is one of Spain’s major rivers, flowing through Andalusia and the city of Seville before emptying into the Atlantic Ocean.
E. Henares River
The Henares River is a tributary of the Jarama in central Spain that flows through Castilla–La Mancha and the Community of Madrid, historically supporting towns such as Alcalá de Henares.
F. None of above. chosen

Statements (58)

Predicate	Object
instanceOf	estuary ⓘ natural harbor ⓘ tidal estuary ⓘ
adjacentTo	Almada ⓘ Barreiro ⓘ Lisbon ⓘ Lisbon metropolitan area ⓘ Seixal ⓘ Setúbal District ⓘ Vila Franca de Xira ⓘ
country	Portugal ⓘ
emptiesInto	Atlantic Ocean ⓘ
hasBiodiversity	aquatic plants ⓘ benthic invertebrates ⓘ fish ⓘ migratory birds ⓘ wading birds ⓘ
hasCharacteristic	brackish water ⓘ broad shallow areas ⓘ high productivity ⓘ important nursery grounds for fish ⓘ large surface area ⓘ
hasConservationArea	Tagus Estuary Natural Reserve ⓘ linked to: Tagus River estuary
hasConservationStatus	partially protected area ⓘ
hasEcosystemType	mudflat ⓘ salt marsh ⓘ seagrass bed ⓘ wetland ⓘ
hasPort	Port of Lisbon ⓘ
hasRole	important corridor for migratory birds ⓘ key area for regional fisheries ⓘ major natural harbor for Lisbon ⓘ strategic area for maritime trade ⓘ
influencedBy	Atlantic Ocean currents ⓘ linked to: Atlantic Meridional Overturning Circulation freshwater inflow from Tagus River ⓘ tides ⓘ
knownFor	importance to Lisbon’s economy ⓘ rich birdlife ⓘ
locatedIn	Atlantic Ocean basin ⓘ linked to: Atlantic Ocean drainage basin Iberian Peninsula ⓘ western Portugal ⓘ
mouthOf	Tagus River ⓘ
partOf	Lisbon harbor ⓘ linked to: Port of Lisbon Lisbon metropolitan region ⓘ linked to: Lisbon metropolitan area Tagus River system ⓘ linked to: Tagus Basin
threatenedBy	climate change ⓘ dredging ⓘ habitat loss ⓘ industrial pollution ⓘ port activities ⓘ urbanization ⓘ
usedFor	birdwatching ⓘ commercial shipping ⓘ fishing ⓘ maritime transport ⓘ recreational boating ⓘ sailing ⓘ tourism ⓘ

How these facts were elicited