Valdecañas Dam
E572814
Valdecañas Dam is a large hydroelectric and water-regulation dam on the Tagus River in Spain, known for forming the Valdecañas Reservoir used for power generation, irrigation, and recreation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Valdecañas Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5774158 — 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: Valdecañas Dam Context triple: [Tagus Basin, hasInfrastructure, Valdecañas Dam]
-
A.
San Roque Dam
San Roque Dam is one of the largest dams in the Philippines, serving as a major source of hydroelectric power, irrigation, and flood control in the Luzon region.
-
B.
Alicurá Dam
Alicurá Dam is a large hydroelectric dam in Argentina’s Patagonia region, known for forming the Alicurá Reservoir and generating power on the Limay River.
-
C.
Alcántara Dam
Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
-
D.
Piedra del Águila Dam
Piedra del Águila Dam is a major hydroelectric dam in Argentine Patagonia, known for its large power-generating capacity and role in regulating the Limay River.
-
E.
Arroyito Dam
Arroyito Dam is a hydroelectric and flood-control dam located on Argentina’s Limay River in the Patagonia region.
- 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: Valdecañas Dam Target entity description: Valdecañas Dam is a large hydroelectric and water-regulation dam on the Tagus River in Spain, known for forming the Valdecañas Reservoir used for power generation, irrigation, and recreation.
-
A.
San Roque Dam
San Roque Dam is one of the largest dams in the Philippines, serving as a major source of hydroelectric power, irrigation, and flood control in the Luzon region.
-
B.
Alicurá Dam
Alicurá Dam is a large hydroelectric dam in Argentina’s Patagonia region, known for forming the Alicurá Reservoir and generating power on the Limay River.
-
C.
Alcántara Dam
Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
-
D.
Piedra del Águila Dam
Piedra del Águila Dam is a major hydroelectric dam in Argentine Patagonia, known for its large power-generating capacity and role in regulating the Limay River.
-
E.
Arroyito Dam
Arroyito Dam is a hydroelectric and flood-control dam located on Argentina’s Limay River in the Patagonia region.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
gravity dam ⓘ hydroelectric dam ⓘ |
| alsoKnownAs | Presa de Valdecañas NERFINISHED ⓘ |
| basinCountry | Spain NERFINISHED ⓘ |
| constructionBegan | 1957 ⓘ |
| country | Spain ⓘ |
| formsReservoir | Valdecañas Reservoir NERFINISHED ⓘ |
| hasStructure |
intake tower
ⓘ
powerhouse ⓘ spillway ⓘ |
| hasUse |
boating
ⓘ
sport fishing ⓘ swimming ⓘ tourism ⓘ |
| height | 96 m ⓘ |
| impounds | Tagus River NERFINISHED ⓘ |
| length | 430 m ⓘ |
| locatedIn |
Extremadura
NERFINISHED
ⓘ
province of Cáceres NERFINISHED ⓘ western Spain ⓘ |
| locatedInProtectedArea | Tagus River Natural Area (Zona de Especial Protección para las Aves) NERFINISHED ⓘ |
| locatedNear |
Bohonal de Ibor
NERFINISHED
ⓘ
El Gordo NERFINISHED ⓘ |
| locatedOnRiver | Tagus River NERFINISHED ⓘ |
| numberOfTurbines | 4 ⓘ |
| openingDate | 1964 ⓘ |
| operator | Iberdrola NERFINISHED ⓘ |
| ownedBy | Iberdrola NERFINISHED ⓘ |
| partOf | Spanish hydroelectric system ⓘ |
| plantCapacity | 240 MW ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ recreation ⓘ water regulation ⓘ |
| regionServed |
Extremadura
NERFINISHED
ⓘ
Tagus river basin NERFINISHED ⓘ |
| reservoirCapacity | 1460000000 m3 ⓘ |
| reservoirName | Embalse de Valdecañas NERFINISHED ⓘ |
| reservoirSurfaceArea | 7300 ha ⓘ |
| riverBasin | Tagus basin NERFINISHED ⓘ |
| turbineType | Francis turbine ⓘ |
| waterUse |
agricultural irrigation
ⓘ
industrial use ⓘ municipal supply ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Valdecañas Dam Description of subject: Valdecañas Dam is a large hydroelectric and water-regulation dam on the Tagus River in Spain, known for forming the Valdecañas Reservoir used for power generation, irrigation, and recreation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.