Boca Reservoir
E525218
Boca Reservoir is a man-made lake in Nevada County, California, used primarily for water storage, flood control, and recreation as part of the Truckee River system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Boca Reservoir canonical | 8 |
How this entity was disambiguated
This entity first appeared as the object of triple T5487162 — 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: Boca Reservoir Context triple: [Truckee River Operating Agreement, affects, Boca Reservoir]
-
A.
El Pardo Reservoir
El Pardo Reservoir is a dammed water body near Madrid, Spain, primarily used for water supply, flood control, and recreation along the Manzanares River.
-
B.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
C.
Otis Reservoir
Otis Reservoir is a large recreational lake in western Massachusetts known for boating, fishing, and lakeside vacation homes.
-
D.
Vasona Reservoir
Vasona Reservoir is a man-made lake in Los Gatos, California, popular for recreation such as boating, fishing, and picnicking within Vasona Lake County Park.
-
E.
Trinidad Reservoir
Trinidad Reservoir is a man-made lake in southern Colorado that serves as the central recreational and scenic feature of Trinidad Lake State Park.
- 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: Boca Reservoir Target entity description: Boca Reservoir is a man-made lake in Nevada County, California, used primarily for water storage, flood control, and recreation as part of the Truckee River system.
-
A.
El Pardo Reservoir
El Pardo Reservoir is a dammed water body near Madrid, Spain, primarily used for water supply, flood control, and recreation along the Manzanares River.
-
B.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
C.
Otis Reservoir
Otis Reservoir is a large recreational lake in western Massachusetts known for boating, fishing, and lakeside vacation homes.
-
D.
Vasona Reservoir
Vasona Reservoir is a man-made lake in Los Gatos, California, popular for recreation such as boating, fishing, and picnicking within Vasona Lake County Park.
-
E.
Trinidad Reservoir
Trinidad Reservoir is a man-made lake in southern Colorado that serves as the central recreational and scenic feature of Trinidad Lake State Park.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Nevada County NERFINISHED ⓘ |
| createdBy | Boca Dam NERFINISHED ⓘ |
| hasActivity |
boating
ⓘ
camping ⓘ fishing ⓘ ice fishing ⓘ snowmobiling ⓘ swimming ⓘ water skiing ⓘ |
| hasFeature |
boat ramps
ⓘ
campgrounds ⓘ day-use areas ⓘ picnic areas ⓘ |
| hasFishSpecies |
kokanee salmon
ⓘ
trout ⓘ |
| impoundedBy | Boca Dam NERFINISHED ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Nevada County, California NERFINISHED ⓘ Sierra Nevada NERFINISHED ⓘ |
| locatedNear | Truckee, California NERFINISHED ⓘ |
| managingAgency | United States Bureau of Reclamation NERFINISHED ⓘ |
| nearHighway | Interstate 80 NERFINISHED ⓘ |
| nearRiver | Truckee River NERFINISHED ⓘ |
| operator | United States Bureau of Reclamation NERFINISHED ⓘ |
| outflow | Little Truckee River NERFINISHED ⓘ |
| partOf | Truckee River system NERFINISHED ⓘ |
| partOfProject | Washoe Project NERFINISHED ⓘ |
| primaryUse |
flood control
ⓘ
recreation ⓘ water storage ⓘ |
| purpose |
fish and wildlife enhancement
ⓘ
flood control on Truckee River ⓘ irrigation water storage ⓘ municipal water supply support ⓘ recreational use ⓘ |
| recreationArea | Tahoe National Forest NERFINISHED ⓘ |
| recreationManagedBy | United States Forest Service NERFINISHED ⓘ |
| region |
Northern California
ⓘ
western United States NERFINISHED ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| watercourse | Little Truckee 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: Boca Reservoir Description of subject: Boca Reservoir is a man-made lake in Nevada County, California, used primarily for water storage, flood control, and recreation as part of the Truckee River system.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.