Sobradinho Dam
E840359
Sobradinho Dam is a large hydroelectric and flood-control dam on Brazil’s São Francisco River, notable for creating one of the world’s largest artificial reservoirs.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Sobradinho Reservoir | 4 |
| Sobradinho Dam canonical | 2 |
| Barragem de Sobradinho | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10071596 — 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: Sobradinho Dam Context triple: [São Francisco River, hasDam, Sobradinho Dam]
-
A.
Santo Antônio Dam
Santo Antônio Dam is a large hydroelectric power plant in Brazil, built on the Madeira River near Porto Velho to generate electricity as part of the Madeira River energy complex.
-
B.
Três Marias Dam
Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
-
C.
São Simão Dam
São Simão Dam is a large hydroelectric power facility in Brazil known for generating electricity and forming the São Simão Reservoir on the Paranaíba River.
-
D.
Gouvães Dam
Gouvães Dam is a hydroelectric dam in northern Portugal that forms part of the Tâmega River energy complex, contributing to regional power generation and water management.
-
E.
Barra Bonita Dam
Barra Bonita Dam is a hydroelectric and navigation dam complex in the state of São Paulo, Brazil, known for regulating the Tietê River and forming the Barra Bonita Reservoir.
- 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: Sobradinho Dam Target entity description: Sobradinho Dam is a large hydroelectric and flood-control dam on Brazil’s São Francisco River, notable for creating one of the world’s largest artificial reservoirs.
-
A.
Santo Antônio Dam
Santo Antônio Dam is a large hydroelectric power plant in Brazil, built on the Madeira River near Porto Velho to generate electricity as part of the Madeira River energy complex.
-
B.
Três Marias Dam
Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
-
C.
São Simão Dam
São Simão Dam is a large hydroelectric power facility in Brazil known for generating electricity and forming the São Simão Reservoir on the Paranaíba River.
-
D.
Gouvães Dam
Gouvães Dam is a hydroelectric dam in northern Portugal that forms part of the Tâmega River energy complex, contributing to regional power generation and water management.
-
E.
Barra Bonita Dam
Barra Bonita Dam is a hydroelectric and navigation dam complex in the state of São Paulo, Brazil, known for regulating the Tietê River and forming the Barra Bonita Reservoir.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
flood control structure
ⓘ
gravity dam ⓘ hydroelectric dam ⓘ |
| basinCountry | Brazil ⓘ |
| category |
Dams in Brazil
ⓘ
Hydroelectric power stations in Brazil ⓘ |
| connectsWith |
Itaparica Dam (downstream in cascade system)
ⓘ
linked to:
Itaparica Dam
|
| constructionBegan | 1973 ⓘ |
| continent | South America ⓘ |
| country | Brazil ⓘ |
| createsReservoir |
Sobradinho Reservoir
ⓘ
linked to:
Sobradinho Dam
|
| designedFor | run-of-river and storage operation ⓘ |
| hasPart |
Sobradinho Reservoir
ⓘ
linked to:
Sobradinho Dam
|
| hasPowerStation | Sobradinho Hydroelectric Power Plant ⓘ |
| height | 41 m ⓘ |
| impact |
displacement of local communities
ⓘ
modification of São Francisco River flow regime ⓘ |
| inflow | São Francisco River ⓘ |
| installedCapacity | 1050 MW ⓘ |
| languageOfWorkOrName | Portuguese ⓘ |
| length | 1230 m ⓘ |
| locatedIn | semi-arid region of Brazil ⓘ |
| locatedInAdministrativeTerritorialEntity | Bahia ⓘ |
| locatedInHydrologicalBasin |
São Francisco River basin
ⓘ
linked to:
São Francisco River Basin
|
| locatedNear | Sobradinho, Bahia ⓘ |
| locatedOnRiver | São Francisco River ⓘ |
| managingAgency |
Companhia Hidro Elétrica do São Francisco
ⓘ
linked to:
São Francisco River hydropower system
|
| nativeName |
Barragem de Sobradinho
ⓘ
linked to:
Sobradinho Dam
|
| notableFor | creating one of the world’s largest artificial reservoirs ⓘ |
| numberOfTurbines | 6 ⓘ |
| openingDate | 1979 ⓘ |
| operator |
CHESF
ⓘ
linked to:
Chesf
|
| outflow | São Francisco River ⓘ |
| ownedBy | Eletrobras ⓘ |
| partOf |
Brazilian national interconnected power system
ⓘ
linked to:
Brazilian National Interconnected System
São Francisco River hydroelectric complex ⓘ
linked to:
São Francisco River hydropower system
|
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ water regulation ⓘ |
| region |
Northeast Region, Brazil
ⓘ
linked to:
Northeast Region of Brazil
|
| reservoirCapacity | 34.1 km³ ⓘ |
| reservoirElevation | 392 m ⓘ |
| reservoirName |
Sobradinho Reservoir
ⓘ
linked to:
Sobradinho Dam
|
| reservoirSurfaceArea | 4214 km² ⓘ |
| reservoirType | artificial lake ⓘ |
| status | operational ⓘ |
| turbineType | Francis turbine ⓘ |
| usesWatercourse | São Francisco River ⓘ |
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: Sobradinho Dam Description of subject: Sobradinho Dam is a large hydroelectric and flood-control dam on Brazil’s São Francisco River, notable for creating one of the world’s largest artificial reservoirs.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sobradinho Dam
linked to: Sobradinho Dam
linked to: Sobradinho Dam
linked to: Sobradinho Dam
linked to: Sobradinho Dam