Rollins Dam
E654926
Rollins Dam is a concrete gravity dam in Nevada County, California, that creates Rollins Reservoir for water storage, hydroelectric power generation, and recreation on the Bear River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rollins Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6947941 — 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: Rollins Dam Context triple: [Bear River (Feather River tributary), hasDam, Rollins Dam]
-
A.
Buford Dam
Buford Dam is a large hydroelectric and flood-control dam in Georgia that creates Lake Lanier and helps regulate water flow and supply for the Atlanta metropolitan area.
-
B.
Hartwell Dam
Hartwell Dam is a large hydroelectric and flood-control dam on the Savannah River that creates Lake Hartwell along the Georgia–South Carolina border.
-
C.
Jackson Bluff Dam
Jackson Bluff Dam is a hydroelectric dam on the Ochlockonee River in Florida, best known for impounding the river to form Lake Talquin.
-
D.
High Rock Dam
High Rock Dam is a hydroelectric dam in North Carolina that impounds the Yadkin River to form High Rock Lake, a major reservoir for power generation and recreation.
-
E.
Barker Dam
Barker Dam is a historic water reservoir and popular scenic spot located within Joshua Tree National Park in California.
- 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: Rollins Dam Target entity description: Rollins Dam is a concrete gravity dam in Nevada County, California, that creates Rollins Reservoir for water storage, hydroelectric power generation, and recreation on the Bear River.
-
A.
Buford Dam
Buford Dam is a large hydroelectric and flood-control dam in Georgia that creates Lake Lanier and helps regulate water flow and supply for the Atlanta metropolitan area.
-
B.
Hartwell Dam
Hartwell Dam is a large hydroelectric and flood-control dam on the Savannah River that creates Lake Hartwell along the Georgia–South Carolina border.
-
C.
Jackson Bluff Dam
Jackson Bluff Dam is a hydroelectric dam on the Ochlockonee River in Florida, best known for impounding the river to form Lake Talquin.
-
D.
High Rock Dam
High Rock Dam is a hydroelectric dam in North Carolina that impounds the Yadkin River to form High Rock Lake, a major reservoir for power generation and recreation.
-
E.
Barker Dam
Barker Dam is a historic water reservoir and popular scenic spot located within Joshua Tree National Park in California.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionMaterial | concrete ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Rollins Reservoir NERFINISHED ⓘ |
| damType | gravity dam ⓘ |
| hasFunction |
flow regulation
ⓘ
groundwater recharge support ⓘ |
| hasHydroelectricPlant | Rollins Powerplant NERFINISHED ⓘ |
| hasName | Rollins Dam NERFINISHED ⓘ |
| hasRecreationActivity |
boating
ⓘ
camping ⓘ fishing ⓘ swimming ⓘ |
| hasReservoir | Rollins Reservoir NERFINISHED ⓘ |
| hasReservoirUse |
irrigation
ⓘ
municipal water supply ⓘ |
| hasSpillway | yes ⓘ |
| impounds | Bear River NERFINISHED ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Nevada County, California NERFINISHED ⓘ |
| locatedInCountry |
United States of America
ⓘ
surface form:
United States
|
| locatedInCounty | Nevada County NERFINISHED ⓘ |
| locatedInState |
California, United States
ⓘ
surface form:
California
|
| locatedInWatershed | Bear River watershed NERFINISHED ⓘ |
| locatedNear |
Chicago Park, California
NERFINISHED
ⓘ
Colfax, California NERFINISHED ⓘ |
| locatedOnWatercourse | Bear River NERFINISHED ⓘ |
| operatedBy | Nevada Irrigation District NERFINISHED ⓘ |
| ownedBy | Nevada Irrigation District NERFINISHED ⓘ |
| partOf | Bear River Project NERFINISHED ⓘ |
| purpose |
hydroelectric power generation
ⓘ
recreation ⓘ water storage ⓘ |
| region | Sierra Nevada foothills NERFINISHED ⓘ |
| riverSystem | Sacramento River basin NERFINISHED ⓘ |
| usedFor |
flood control
ⓘ
peaking power generation ⓘ |
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: Rollins Dam Description of subject: Rollins Dam is a concrete gravity dam in Nevada County, California, that creates Rollins Reservoir for water storage, hydroelectric power generation, and recreation on the Bear River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Bear River (Feather River tributary)