Gardiner Dam
E524832
Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Gardiner Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5360543 — 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: Gardiner Dam Context triple: [South Saskatchewan River, hasDam, Gardiner Dam]
-
A.
Holyoke Dam
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
-
B.
Lewiston Dam
Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
-
C.
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.
-
D.
La Grange Dam
La Grange Dam is a historic diversion dam on California’s Tuolumne River that supplies irrigation water to agricultural lands in the San Joaquin Valley.
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E.
Goodwin Dam
Goodwin Dam is a concrete gravity diversion dam on California’s Stanislaus River that helps regulate river flow and supplies irrigation water to surrounding agricultural areas.
- 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: Gardiner Dam Target entity description: Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
-
A.
Holyoke Dam
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
-
B.
Lewiston Dam
Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
-
C.
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.
-
D.
La Grange Dam
La Grange Dam is a historic diversion dam on California’s Tuolumne River that supplies irrigation water to agricultural lands in the San Joaquin Valley.
-
E.
Goodwin Dam
Goodwin Dam is a concrete gravity diversion dam on California’s Stanislaus River that helps regulate river flow and supplies irrigation water to surrounding agricultural areas.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
earth-fill dam
ⓘ
hydroelectric dam ⓘ infrastructure ⓘ |
| constructionStartDate | 1959 ⓘ |
| continent | North America ⓘ |
| country | Canada ⓘ |
| creates | Lake Diefenbaker irrigation system NERFINISHED ⓘ |
| formsReservoir | Lake Diefenbaker NERFINISHED ⓘ |
| hasFunction |
drought mitigation
ⓘ
ice control ⓘ river flow regulation ⓘ |
| hasHydroelectricPlant | Coteau Creek Hydroelectric Station NERFINISHED ⓘ |
| hasSpillway | yes ⓘ |
| height | 64 m ⓘ |
| installedCapacity | 186 MW ⓘ |
| isAmong | largest earth-filled dams in Canada ⓘ |
| length | 5000 m ⓘ |
| locatedIn |
Rural Municipality of Coteau No. 255
NERFINISHED
ⓘ
Rural Municipality of Loreburn No. 254 NERFINISHED ⓘ Saskatchewan NERFINISHED ⓘ |
| locatedNear |
Elbow, Saskatchewan
NERFINISHED
ⓘ
Outlook, Saskatchewan NERFINISHED ⓘ |
| locatedOnRiver | South Saskatchewan River NERFINISHED ⓘ |
| material |
clay core
ⓘ
earth-fill ⓘ rock riprap ⓘ |
| namedAfter | James G. Gardiner NERFINISHED ⓘ |
| nearHighway |
Highway 219 (Saskatchewan)
NERFINISHED
ⓘ
Highway 44 (Saskatchewan) NERFINISHED ⓘ |
| openingDate | 1967 ⓘ |
| operator | SaskPower NERFINISHED ⓘ |
| owner | SaskPower NERFINISHED ⓘ |
| partOf | South Saskatchewan River Project NERFINISHED ⓘ |
| plantName | Coteau Creek Hydroelectric Station NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ recreation ⓘ water supply ⓘ |
| region | Central Saskatchewan NERFINISHED ⓘ |
| reservoirName | Lake Diefenbaker NERFINISHED ⓘ |
| reservoirSurfaceArea | about 430 km² ⓘ |
| reservoirTotalCapacity | about 9.4 km³ ⓘ |
| turbineCount | 3 ⓘ |
| turbineType | Francis turbine ⓘ |
| watercourseDam | South Saskatchewan 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: Gardiner Dam Description of subject: Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.