Kerr Dam
E659722
Kerr Dam is a large hydroelectric and flood-control structure on the Roanoke River that creates Kerr Lake (also known as Buggs Island Lake) along the Virginia–North Carolina border.
All labels observed (2)
| Label | Occurrences |
|---|---|
| John H. Kerr Dam | 2 |
| Kerr Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6994931 — 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: Kerr Dam Context triple: [Roanoke River, hasDam, Kerr 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.
-
B.
Duncan Dam
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.
-
C.
Tieton Dam
Tieton Dam is a concrete multiple-arch dam in central Washington State that provides irrigation water storage, flood control, and hydroelectric power as part of the U.S. Bureau of Reclamation’s Yakima River basin developments.
-
D.
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.
-
E.
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.
- 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: Kerr Dam Target entity description: Kerr Dam is a large hydroelectric and flood-control structure on the Roanoke River that creates Kerr Lake (also known as Buggs Island Lake) along the Virginia–North Carolina border.
-
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.
Duncan Dam
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.
-
C.
Tieton Dam
Tieton Dam is a concrete multiple-arch dam in central Washington State that provides irrigation water storage, flood control, and hydroelectric power as part of the U.S. Bureau of Reclamation’s Yakima River basin developments.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
flood control structure
ⓘ
gravity dam ⓘ hydroelectric dam ⓘ |
| alsoKnownAs |
Buggs Island Dam
NERFINISHED
ⓘ
John H. Kerr Dam NERFINISHED ⓘ |
| associatedReservoirShorelineStates |
North Carolina
NERFINISHED
ⓘ
Virginia NERFINISHED ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| countrySubdivision |
Granville County, North Carolina
NERFINISHED
ⓘ
Halifax County, Virginia NERFINISHED ⓘ Mecklenburg County, Virginia NERFINISHED ⓘ Vance County, North Carolina NERFINISHED ⓘ Warren County, North Carolina NERFINISHED ⓘ |
| createsReservoir |
Buggs Island Lake
NERFINISHED
ⓘ
Kerr Lake NERFINISHED ⓘ |
| formsBoundaryBetween |
North Carolina
NERFINISHED
ⓘ
Virginia NERFINISHED ⓘ |
| hasFunction |
generates electricity
ⓘ
reduces downstream flooding ⓘ regulates flow of the Roanoke River ⓘ |
| hasUse |
boating
ⓘ
camping ⓘ fishing ⓘ |
| impounds | Roanoke River NERFINISHED ⓘ |
| locatedIn |
North Carolina
ⓘ
Virginia ⓘ |
| locatedInWatershed | Roanoke River basin NERFINISHED ⓘ |
| locatedOn | Roanoke River NERFINISHED ⓘ |
| locatedOnBorderOf |
North Carolina
NERFINISHED
ⓘ
Virginia NERFINISHED ⓘ |
| namedAfter | John H. Kerr NERFINISHED ⓘ |
| operatedBy | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| owner | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ recreation ⓘ water supply ⓘ |
| region |
Southern United States
ⓘ
surface form:
Southeastern United States
|
| reservoirAlsoKnownAs |
Buggs Island Lake
NERFINISHED
ⓘ
Kerr Lake NERFINISHED ⓘ |
| reservoirName | John H. Kerr Reservoir NERFINISHED ⓘ |
| riverCrossed | Roanoke River NERFINISHED ⓘ |
| state |
North Carolina
NERFINISHED
ⓘ
Virginia ⓘ |
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: Kerr Dam Description of subject: Kerr Dam is a large hydroelectric and flood-control structure on the Roanoke River that creates Kerr Lake (also known as Buggs Island Lake) along the Virginia–North Carolina border.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
John H. Kerr Dam