Nickajack Dam
E107373
Nickajack Dam is a hydroelectric and navigation dam on the Tennessee River in southeastern Tennessee, forming Nickajack Lake and helping control flooding and support regional power generation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nickajack Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T781457 — 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: Nickajack Dam Context triple: [Tennessee River, hasDam, Nickajack Dam]
-
A.
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.
-
B.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
C.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
-
D.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
E.
Trinity Dam
Trinity Dam is a major earthfill dam on the Trinity River in Northern California, forming Trinity Lake and providing water storage, hydroelectric power, and flood control as part of the state’s large federal water management system.
- 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: Nickajack Dam Target entity description: Nickajack Dam is a hydroelectric and navigation dam on the Tennessee River in southeastern Tennessee, forming Nickajack Lake and helping control flooding and support regional power generation.
-
A.
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.
-
B.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
C.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
-
D.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
E.
Trinity Dam
Trinity Dam is a major earthfill dam on the Trinity River in Northern California, forming Trinity Lake and providing water storage, hydroelectric power, and flood control as part of the state’s large federal water management system.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ navigation dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| commissioned | 1967 ⓘ |
| constructionBegan | 1964 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| downstreamFrom | Chickamauga Dam ⓘ |
| elevationAtCrest | about 633 feet above sea level ⓘ |
| formsReservoir | Nickajack Lake ⓘ |
| hasEnergySource | hydropower ⓘ |
| hasFunction |
controls water levels on the Tennessee River
ⓘ
facilitates barge traffic ⓘ generates hydroelectric power ⓘ |
| hasLock | navigation lock ⓘ |
| hasSpillwayType | gate-controlled overflow ⓘ |
| hasUse |
boating
ⓘ
fishing ⓘ wildlife observation ⓘ |
| helpsControl | flooding on the Tennessee River ⓘ |
| isPartOf |
Tennessee Valley Authority
ⓘ
surface form:
Tennessee Valley Authority dam system
|
| locatedIn |
Marion County, Tennessee
ⓘ
Tennessee (eastern portion) ⓘ
surface form:
southeastern Tennessee
|
| locatedInCountry |
United States of America
ⓘ
surface form:
United States
|
| locatedNear |
Chattanooga
ⓘ
surface form:
Chattanooga, Tennessee
Nickajack Cave ⓘ |
| locatedOnRiver | Tennessee River ⓘ |
| managingAgency | Tennessee Valley Authority ⓘ |
| opened | 1967 ⓘ |
| operator | Tennessee Valley Authority ⓘ |
| ownedBy | Tennessee Valley Authority ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ navigation ⓘ recreation ⓘ |
| regionServed |
Tennessee Valley
ⓘ
southeastern Tennessee ⓘ |
| replacedStructure | Hales Bar Dam ⓘ |
| reservoirName | Nickajack Lake ⓘ |
| reservoirPurpose |
flood control
ⓘ
hydroelectric power ⓘ navigation ⓘ |
| riverSystem |
Tennessee River
ⓘ
surface form:
Tennessee River system
|
| supports |
inland navigation
ⓘ
regional power generation ⓘ |
| upstreamFrom | Guntersville Dam ⓘ |
| watercourse | Tennessee 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: Nickajack Dam Description of subject: Nickajack Dam is a hydroelectric and navigation dam on the Tennessee River in southeastern Tennessee, forming Nickajack Lake and helping control flooding and support regional power generation.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Tennessee Valley region