Fontana Dam
E564186
Fontana Dam is a large hydroelectric dam in western North Carolina that impounds the Little Tennessee River to form Fontana Lake and provides power, flood control, and recreational opportunities in the surrounding Great Smoky Mountains region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fontana Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5661935 — 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: Fontana Dam Context triple: [Fontana Lake shoreline, hasAccessPoint, Fontana Dam]
-
A.
Sherman Dam
Sherman Dam is a hydroelectric and flood-control structure located on the Deerfield River in the northeastern United States.
-
B.
Roosevelt Dam
Roosevelt Dam is a historic masonry and concrete arch dam on Arizona’s Salt River, built in the early 20th century to provide water storage, flood control, and hydroelectric power for the region.
-
C.
La Mesa Dam
La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
-
D.
Wheeler Dam
Wheeler Dam is a hydroelectric dam on the Tennessee River in northern Alabama that forms Wheeler Lake and helps provide power, navigation, and flood control in the region.
-
E.
Perris Dam
Perris Dam is a large earthfill embankment dam in Riverside County, California, that forms Lake Perris as part of the state’s major water storage and distribution 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: Fontana Dam Target entity description: Fontana Dam is a large hydroelectric dam in western North Carolina that impounds the Little Tennessee River to form Fontana Lake and provides power, flood control, and recreational opportunities in the surrounding Great Smoky Mountains region.
-
A.
Sherman Dam
Sherman Dam is a hydroelectric and flood-control structure located on the Deerfield River in the northeastern United States.
-
B.
Roosevelt Dam
Roosevelt Dam is a historic masonry and concrete arch dam on Arizona’s Salt River, built in the early 20th century to provide water storage, flood control, and hydroelectric power for the region.
-
C.
La Mesa Dam
La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
-
D.
Wheeler Dam
Wheeler Dam is a hydroelectric dam on the Tennessee River in northern Alabama that forms Wheeler Lake and helps provide power, navigation, and flood control in the region.
-
E.
Perris Dam
Perris Dam is a large earthfill embankment dam in Riverside County, California, that forms Lake Perris as part of the state’s major water storage and distribution system.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
hydroelectric dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionStartDate | 1942 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| elevationAtCrest | about 1,710 feet above sea level ⓘ |
| hasCrossing | State Highway NC 28 NERFINISHED ⓘ |
| hasFeature |
overlook
ⓘ
visitor center ⓘ |
| height | about 480 feet ⓘ |
| impounds | Fontana Lake NERFINISHED ⓘ |
| installedCapacity | about 304 megawatts ⓘ |
| isOneOf | tallest dams in the eastern United States ⓘ |
| length | about 2,365 feet ⓘ |
| locatedIn |
Graham County, North Carolina
NERFINISHED
ⓘ
North Carolina ⓘ |
| locatedInRegion | Great Smoky Mountains NERFINISHED ⓘ |
| locatedNear |
Bryson City, North Carolina
NERFINISHED
ⓘ
Great Smoky Mountains National Park NERFINISHED ⓘ Robbinsville, North Carolina NERFINISHED ⓘ |
| locatedOnRiver | Little Tennessee River NERFINISHED ⓘ |
| managedBy | Tennessee Valley Authority NERFINISHED ⓘ |
| namedAfter | Fontana Village NERFINISHED ⓘ |
| near | Appalachian Trail NERFINISHED ⓘ |
| nearProtectedArea |
Appalachian Trail corridor
NERFINISHED
ⓘ
Great Smoky Mountains National Park NERFINISHED ⓘ |
| numberOfTurbines | 3 ⓘ |
| openingDate | 1944 ⓘ |
| operator | Tennessee Valley Authority NERFINISHED ⓘ |
| ownedBy | Tennessee Valley Authority NERFINISHED ⓘ |
| partOf | Tennessee Valley Authority system NERFINISHED ⓘ |
| primaryWartimePurpose | power supply for aluminum production ⓘ |
| providesRecreation |
boating
ⓘ
camping ⓘ fishing ⓘ hiking ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ navigation support ⓘ recreation ⓘ |
| region | western North Carolina NERFINISHED ⓘ |
| reservoirCapacity | about 4,600,000 acre-feet ⓘ |
| reservoirName | Fontana Lake NERFINISHED ⓘ |
| usedDuring | World War II ⓘ |
| watercourse | Little Tennessee 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: Fontana Dam Description of subject: Fontana Dam is a large hydroelectric dam in western North Carolina that impounds the Little Tennessee River to form Fontana Lake and provides power, flood control, and recreational opportunities in the surrounding Great Smoky Mountains region.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Tennessee Valley region