Bethany Reservoir
E333951
Bethany Reservoir is a man-made water storage facility in California that serves as a key forebay and regulating reservoir for the State Water Project’s South Bay Aqueduct.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bethany Reservoir canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3135868 — 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: Bethany Reservoir Context triple: [South Bay Aqueduct, startPoint, Bethany Reservoir]
-
A.
Howden Reservoir
Howden Reservoir is a large man-made lake in Derbyshire’s Peak District, known as part of the Upper Derwent Valley chain of reservoirs supplying water to nearby cities and popular for its scenic surroundings and outdoor recreation.
-
B.
Union Reservoir
Union Reservoir is a popular recreational lake near Longmont, Colorado, known for activities such as boating, fishing, swimming, and picnicking.
-
C.
Bog Brook Reservoir
Bog Brook Reservoir is a small New York City water supply reservoir in southeastern New York State that forms part of the Croton Watershed system.
-
D.
Harperrig Reservoir
Harperrig Reservoir is a man-made freshwater reservoir in the Pentland Hills of Scotland, used for water supply, fishing, and recreation.
-
E.
Claerwen Reservoir
Claerwen Reservoir is a large upland water reservoir in mid Wales, known for its impressive dam and scenic surroundings within the Elan Valley.
- 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: Bethany Reservoir Target entity description: Bethany Reservoir is a man-made water storage facility in California that serves as a key forebay and regulating reservoir for the State Water Project’s South Bay Aqueduct.
-
A.
Howden Reservoir
Howden Reservoir is a large man-made lake in Derbyshire’s Peak District, known as part of the Upper Derwent Valley chain of reservoirs supplying water to nearby cities and popular for its scenic surroundings and outdoor recreation.
-
B.
Union Reservoir
Union Reservoir is a popular recreational lake near Longmont, Colorado, known for activities such as boating, fishing, swimming, and picnicking.
-
C.
Bog Brook Reservoir
Bog Brook Reservoir is a small New York City water supply reservoir in southeastern New York State that forms part of the Croton Watershed system.
-
D.
Harperrig Reservoir
Harperrig Reservoir is a man-made freshwater reservoir in the Pentland Hills of Scotland, used for water supply, fishing, and recreation.
-
E.
Claerwen Reservoir
Claerwen Reservoir is a large upland water reservoir in mid Wales, known for its impressive dam and scenic surroundings within the Elan Valley.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| connectedTo |
South Bay Aqueduct turnout facilities
ⓘ
linked to:
South Bay Aqueduct
South Bay Pumping Plant ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| elevation | about 120 meters above sea level ⓘ |
| fedBy |
California Aqueduct via South Bay Pumping Plant
ⓘ
linked to:
California Aqueduct
|
| hasPart | Bethany Reservoir State Recreation Area ⓘ |
| hasProtectedAreaDesignation | state recreation area (adjacent lands) ⓘ |
| locatedIn |
Alameda County, California
ⓘ
linked to:
Alameda County
California ⓘ
linked to:
California, United States
Diablo Range foothills ⓘ
linked to:
Diablo Range
|
| locatedNear |
Byron, California
ⓘ
Livermore, California ⓘ
linked to:
Livermore
|
| managingAgency | California Department of Parks and Recreation ⓘ |
| nearTransportRoute |
California State Route 4
ⓘ
Interstate 580 ⓘ |
| operator | California Department of Water Resources ⓘ |
| outflowsTo | South Bay Aqueduct ⓘ |
| partOf |
California State Water Project
ⓘ
linked to:
State Water Project
South Bay Aqueduct ⓘ |
| purpose |
industrial water supply
ⓘ
municipal water supply ⓘ regulation of flows in South Bay Aqueduct ⓘ |
| recreation |
boating
ⓘ
fishing ⓘ picnicking ⓘ windsurfing ⓘ |
| region | San Joaquin Valley–Bay Area interface ⓘ |
| status | operational ⓘ |
| use |
forebay
ⓘ
regulating reservoir ⓘ water storage ⓘ |
| watercourse | California Aqueduct ⓘ |
| waterManagementFunction |
balancing supply and demand in South Bay Aqueduct
ⓘ
flow regulation ⓘ short-term storage ⓘ |
| waterSupplyTo | South Bay region of the San Francisco Bay Area ⓘ |
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: Bethany Reservoir Description of subject: Bethany Reservoir is a man-made water storage facility in California that serves as a key forebay and regulating reservoir for the State Water Project’s South Bay Aqueduct.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.