Duncan Dam
E433880
Duncan Dam is a major hydroelectric and flood-control dam on the Duncan River in British Columbia, forming part of the Columbia River Treaty system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Duncan Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3695871 — 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: Duncan Dam Context triple: [Columbia River hydropower system, includesFacility, Duncan Dam]
-
A.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
-
B.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
-
C.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
D.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
-
E.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
- 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: Duncan Dam Target entity description: Duncan Dam is a major hydroelectric and flood-control dam on the Duncan River in British Columbia, forming part of the Columbia River Treaty system.
-
A.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
-
B.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
-
C.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
D.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
-
E.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
flood control dam
ⓘ
hydroelectric dam ⓘ |
| basinCountry | Canada ⓘ |
| completionDate | 1967 ⓘ |
| constructionBegan | 1964 ⓘ |
| country | Canada ⓘ |
| createsReservoir | Duncan Lake NERFINISHED ⓘ |
| hasFloodControlStorage | yes ⓘ |
| hasFunction |
mitigate spring flooding
ⓘ
seasonal storage of spring runoff ⓘ support downstream power generation ⓘ |
| isAssociatedWith |
Canadian federal government
NERFINISHED
ⓘ
International Joint Commission NERFINISHED ⓘ United States federal government NERFINISHED ⓘ |
| isComponentOf | Columbia River Treaty Canadian storage dams NERFINISHED ⓘ |
| isUpstreamOf |
Columbia River mainstem dams in the United States
NERFINISHED
ⓘ
Corra Linn Dam NERFINISHED ⓘ Kootenay Lake NERFINISHED ⓘ |
| locatedIn | British Columbia ⓘ |
| locatedInContinent | North America ⓘ |
| locatedInCountrySubdivision | Province of British Columbia NERFINISHED ⓘ |
| locatedInHydrologicRegion | Pacific Northwest NERFINISHED ⓘ |
| locatedInRegion | Southeastern British Columbia NERFINISHED ⓘ |
| locatedOnRiver | Duncan River NERFINISHED ⓘ |
| nearCity |
Kaslo, British Columbia
NERFINISHED
ⓘ
Nakusp, British Columbia NERFINISHED ⓘ |
| openingDate | 1967 ⓘ |
| operator | BC Hydro NERFINISHED ⓘ |
| ownedBy | BC Hydro NERFINISHED ⓘ |
| partOf |
Columbia River Treaty storage projects
NERFINISHED
ⓘ
Columbia River Treaty system NERFINISHED ⓘ |
| partOfAgreement | Columbia River Treaty between Canada and the United States NERFINISHED ⓘ |
| primaryFunctionInTreaty |
provide storage for downstream U.S. hydroelectric projects
ⓘ
reduce flood risk on the Columbia River ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ |
| regulatesFlowFor | Columbia River system NERFINISHED ⓘ |
| regulatesFlowOf | Duncan River NERFINISHED ⓘ |
| reservoirName | Duncan Lake Reservoir NERFINISHED ⓘ |
| riverSystem | Columbia River basin NERFINISHED ⓘ |
| watercourse | Duncan River NERFINISHED ⓘ |
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: Duncan Dam Description of subject: Duncan Dam is a major hydroelectric and flood-control dam on the Duncan River in British Columbia, forming part of the Columbia River Treaty system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.