Carraízo Dam
E883499
Carraízo Dam is a major flood-control and water-supply structure in Puerto Rico that impounds the Loíza River to form the Carraízo Reservoir serving the San Juan metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Carraízo Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T10733338 — 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: Carraízo Dam Context triple: [Carraízo Reservoir, hasInfrastructure, Carraízo Dam]
-
A.
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.
-
B.
Valdecañas Dam
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.
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C.
La Torrassa Dam
La Torrassa Dam is a hydroelectric and water-regulation dam located on the Noguera Pallaresa River in the Catalan Pyrenees of Spain.
-
D.
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.
-
E.
Prado Dam
Prado Dam is a major flood-control and water-conservation structure on Southern California’s Santa Ana River, protecting downstream communities in Orange, Riverside, and San Bernardino counties.
- 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: Carraízo Dam Target entity description: Carraízo Dam is a major flood-control and water-supply structure in Puerto Rico that impounds the Loíza River to form the Carraízo Reservoir serving the San Juan metropolitan area.
-
A.
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.
-
B.
Valdecañas Dam
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.
-
C.
La Torrassa Dam
La Torrassa Dam is a hydroelectric and water-regulation dam located on the Noguera Pallaresa River in the Catalan Pyrenees of Spain.
-
D.
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.
-
E.
Prado Dam
Prado Dam is a major flood-control and water-conservation structure on Southern California’s Santa Ana River, protecting downstream communities in Orange, Riverside, and San Bernardino counties.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
flood-control structure ⓘ gravity dam ⓘ water-supply infrastructure ⓘ |
| affects | downstream flooding in Loíza River ⓘ |
| alsoKnownAs |
Loíza Dam
NERFINISHED
ⓘ
Represa Carraízo NERFINISHED ⓘ |
| basinCountry | Puerto Rico NERFINISHED ⓘ |
| completionDate | 1950s ⓘ |
| constructionStart | mid-20th century ⓘ |
| continent | North America ⓘ |
| country | Puerto Rico ⓘ |
| createsReservoir | Carraízo Reservoir NERFINISHED ⓘ |
| hasFunction |
regulation of Loíza River flow
ⓘ
storage of potable water ⓘ |
| hasPart | Carraízo Reservoir NERFINISHED ⓘ |
| hasRisk |
drought-related water shortages
ⓘ
sedimentation in reservoir ⓘ |
| impounds | Loíza River NERFINISHED ⓘ |
| isPartOf | water supply system of San Juan metropolitan area ⓘ |
| languageOfName | Spanish ⓘ |
| locatedIn | Trujillo Alto, Puerto Rico NERFINISHED ⓘ |
| locatedInAdministrativeTerritory | Municipality of Trujillo Alto NERFINISHED ⓘ |
| locatedInHydrologicalUnit | Loíza River watershed GENERATED ⓘ |
| locatedNear | Carraízo barrio NERFINISHED ⓘ |
| locatedOnRiver | Loíza River NERFINISHED ⓘ |
| managedBy | Puerto Rico Aqueduct and Sewer Authority NERFINISHED ⓘ |
| namedAfter | Carraízo area ⓘ |
| nearCity |
Caguas, Puerto Rico
NERFINISHED
ⓘ
San Juan, Puerto Rico NERFINISHED ⓘ |
| operator | Puerto Rico Aqueduct and Sewer Authority NERFINISHED ⓘ |
| primaryCitySupplied | San Juan, Puerto Rico GENERATED ⓘ |
| purpose |
flood control
ⓘ
irrigation water supply ⓘ municipal water supply ⓘ |
| region | Caribbean ⓘ |
| reservoirName | Carraízo Reservoir NERFINISHED ⓘ |
| reservoirUse |
drinking water supply
ⓘ
flood attenuation ⓘ |
| riverBasin | Loíza River basin NERFINISHED ⓘ |
| serves |
Bayamón, Puerto Rico
NERFINISHED
ⓘ
Carolina, Puerto Rico NERFINISHED ⓘ Guaynabo, Puerto Rico NERFINISHED ⓘ San Juan metropolitan area NERFINISHED ⓘ Trujillo Alto, Puerto Rico NERFINISHED ⓘ |
| usedFor | public water supply system of northern Puerto Rico ⓘ |
| waterSourceType | surface water ⓘ |
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: Carraízo Dam Description of subject: Carraízo Dam is a major flood-control and water-supply structure in Puerto Rico that impounds the Loíza River to form the Carraízo Reservoir serving the San Juan metropolitan area.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Carraízo Reservoir
subject surface form:
Carraízo Reservoir