Boca Dam
E138549
Boca Dam is an earthfill dam in Nevada County, California, that creates Boca Reservoir on the Little Truckee River for water storage, flood control, and recreation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Boca Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1090134 — 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 Dam Context triple: [Truckee River, hasDam, Boca Dam]
-
A.
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.
-
B.
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.
-
C.
Nickajack Dam
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.
-
D.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
-
E.
Norris Dam
Norris Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in eastern Tennessee, notable as TVA’s first major dam project and a key component of regional flood control and power generation.
- 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 Dam Target entity description: Boca Dam is an earthfill dam in Nevada County, California, that creates Boca Reservoir on the Little Truckee River for water storage, flood control, and recreation.
-
A.
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.
-
B.
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.
-
C.
Nickajack Dam
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.
-
D.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
-
E.
Norris Dam
Norris Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in eastern Tennessee, notable as TVA’s first major dam project and a key component of regional flood control and power generation.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
earthfill dam
ⓘ
embankment dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Boca Reservoir ⓘ |
| hasName | Boca Dam self-link ⓘ |
| hasOutflow | Little Truckee River ⓘ |
| impounds | Little Truckee River ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Nevada County, California ⓘ |
| locatedInMountainRange | Sierra Nevada ⓘ |
| locatedNear |
Truckee
ⓘ
surface form:
Truckee, California
|
| locatedOnRiver | Little Truckee River ⓘ |
| manages | Boca Reservoir ⓘ |
| partOf |
Truckee River
ⓘ
surface form:
Truckee River Basin
|
| purpose |
flood control
ⓘ
recreation ⓘ water storage ⓘ |
| reservoirName | Boca Reservoir ⓘ |
| riverSystem |
Truckee River
ⓘ
surface form:
Truckee River system
|
| usedFor |
fishery enhancement
ⓘ
irrigation water supply ⓘ municipal water supply ⓘ outdoor recreation ⓘ |
| watercourse | Little Truckee 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: Boca Dam Description of subject: Boca Dam is an earthfill dam in Nevada County, California, that creates Boca Reservoir on the Little Truckee River for water storage, flood control, and recreation.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.