Libby Dam
E436194
Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Libby Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3695872 — 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: Libby Dam Context triple: [Columbia River hydropower system, includesFacility, Libby Dam]
-
A.
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.
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B.
McNary Dam
McNary Dam is a large hydroelectric dam and navigation lock complex on the Columbia River in the Pacific Northwest of the United States.
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C.
Hollywood Dam
Hollywood Dam is a concrete arch-gravity dam in the Hollywood Hills of Los Angeles that impounds the Hollywood Reservoir as part of the city’s water supply system.
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D.
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.
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E.
Palisade Dam
Palisade Dam is an irrigation and water storage structure located on the Sevier River in central Utah, supporting local agriculture and recreation.
- 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: Libby Dam Target entity description: Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
-
A.
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.
-
B.
McNary Dam
McNary Dam is a large hydroelectric dam and navigation lock complex on the Columbia River in the Pacific Northwest of the United States.
-
C.
Hollywood Dam
Hollywood Dam is a concrete arch-gravity dam in the Hollywood Hills of Los Angeles that impounds the Hollywood Reservoir as part of the city’s water supply system.
-
D.
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.
-
E.
Palisade Dam
Palisade Dam is an irrigation and water storage structure located on the Sevier River in central Utah, supporting local agriculture and recreation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
flood control structure ⓘ hydroelectric dam ⓘ |
| affects | Kootenai River flow regime ⓘ |
| associatedWith | Lake Koocanusa Bridge NERFINISHED ⓘ |
| benefits |
downstream flood protection in Canada
ⓘ
downstream flood protection in the United States ⓘ |
| classification | large dam ⓘ |
| constructionStartDate | 1966 ⓘ |
| coordinatedWith | other Columbia River Basin dams ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Kootenai River NERFINISHED ⓘ |
| dedicationDate | August 24, 1975 ⓘ |
| hasEnvironmentalImpact |
affects Kootenai River white sturgeon
ⓘ
alters downstream fish habitat ⓘ |
| height |
about 129 meters
ⓘ
about 422 feet ⓘ |
| installedCapacity | about 525 megawatts ⓘ |
| jurisdiction | U.S. Army Corps of Engineers Seattle District NERFINISHED ⓘ |
| length |
about 3,055 feet
ⓘ
about 930 meters ⓘ |
| locatedIn | Lincoln County, Montana NERFINISHED ⓘ |
| locatedNear | U.S.–Canada border NERFINISHED ⓘ |
| locatedOnRiver | Kootenai River NERFINISHED ⓘ |
| manages | spring snowmelt flooding ⓘ |
| namedAfter | nearby town of Libby ⓘ |
| nearestCity | Libby, Montana NERFINISHED ⓘ |
| numberOfTurbines | 5 ⓘ |
| openingDate | 1972 ⓘ |
| operator | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| owner | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| partOf | Columbia River Treaty projects NERFINISHED ⓘ |
| partOfRiverBasin | Columbia River Basin NERFINISHED ⓘ |
| primaryPurpose |
flood control
ⓘ
hydroelectric power generation ⓘ |
| provides | peaking power to the regional grid ⓘ |
| regionServed | Pacific Northwest ⓘ |
| regulates | Columbia River Basin runoff ⓘ |
| reservoir | Lake Koocanusa NERFINISHED ⓘ |
| reservoirCapacity |
about 7.3 million acre-feet
ⓘ
about 9.0 cubic kilometers ⓘ |
| secondaryPurpose |
recreation
ⓘ
water regulation for downstream navigation ⓘ |
| spillwayType | gated overflow spillway ⓘ |
| supports |
boating on Lake Koocanusa
ⓘ
recreational fishing on Lake Koocanusa ⓘ |
| turbineType | Francis turbine ⓘ |
| upstreamFrom | Kootenai Falls 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: Libby Dam Description of subject: Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.