West Basin of Ashokan Reservoir
E297366
The West Basin of Ashokan Reservoir is the western section of the Ashokan Reservoir in New York’s Catskill Mountains, serving as part of a major water supply system for New York City.
All labels observed (1)
| Label | Occurrences |
|---|---|
| West Basin of Ashokan Reservoir canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2735272 — 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: West Basin of Ashokan Reservoir Context triple: [Ashokan Reservoir, hasPart, West Basin of Ashokan Reservoir]
-
A.
Pepacton Reservoir
Pepacton Reservoir is a large man-made lake in the Catskill Mountains of New York that serves as a major component of New York City's drinking water supply system.
-
B.
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.
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C.
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.
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D.
Crystal Springs Reservoir
Crystal Springs Reservoir is a large artificial lake system on the San Francisco Peninsula that serves as a major drinking water source and scenic open-space area for the region.
-
E.
Hollywood Reservoir
Hollywood Reservoir is a man-made lake in the Hollywood Hills of Los Angeles, known for its scenic walking paths and iconic views of the Hollywood Sign.
- 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: West Basin of Ashokan Reservoir Target entity description: The West Basin of Ashokan Reservoir is the western section of the Ashokan Reservoir in New York’s Catskill Mountains, serving as part of a major water supply system for New York City.
-
A.
Pepacton Reservoir
Pepacton Reservoir is a large man-made lake in the Catskill Mountains of New York that serves as a major component of New York City's drinking water supply system.
-
B.
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.
-
C.
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.
-
D.
Crystal Springs Reservoir
Crystal Springs Reservoir is a large artificial lake system on the San Francisco Peninsula that serves as a major drinking water source and scenic open-space area for the region.
-
E.
Hollywood Reservoir
Hollywood Reservoir is a man-made lake in the Hollywood Hills of Los Angeles, known for its scenic walking paths and iconic views of the Hollywood Sign.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
reservoir basin
ⓘ
water body ⓘ |
| accessRestricted | true ⓘ |
| basinType | west basin ⓘ |
| connectedTo |
Catskill Aqueduct
ⓘ
East Basin of Ashokan Reservoir ⓘ |
| connectedVia |
Ashokan Reservoir
ⓘ
surface form:
Ashokan Reservoir outlet works
|
| country | United States of America ⓘ |
| hasFunction |
initial storage of Catskill system water
ⓘ
sedimentation of inflowing water ⓘ |
| hasShorelineUseRestriction |
controlled fishing access with permit
ⓘ
no motorized boating (with limited exceptions) ⓘ no swimming ⓘ |
| inflow | Esopus Creek ⓘ |
| locatedIn |
Catskill Mountains
ⓘ
New York State ⓘ Ulster County ⓘ
surface form:
Ulster County, New York
|
| locatedNear |
Town of Hurley, New York
ⓘ
Town of Olive, New York ⓘ Town of Shandaken, New York ⓘ |
| manMade | true ⓘ |
| operator | New York City Department of Environmental Protection ⓘ |
| ownedBy |
New York City
ⓘ
surface form:
City of New York
|
| partOf |
Ashokan Reservoir
ⓘ
Ashokan Reservoir ⓘ
surface form:
Ashokan Reservoir watershed
Catskill–Delaware water supply system ⓘ
surface form:
Catskill water supply system
New York City Department of Environmental Protection ⓘ
surface form:
New York City Department of Environmental Protection watershed lands
Catskill–Delaware water supply system ⓘ
surface form:
New York City water supply Catskill–Delaware system
New York City water supply system ⓘ |
| primaryUse | drinking water storage ⓘ |
| purpose | storage of drinking water for New York City ⓘ |
| region | Catskill Park ⓘ |
| regulatesFlowTo | East Basin of Ashokan Reservoir ⓘ |
| separatedBy | dividing weir ⓘ |
| separatedFrom | East Basin of Ashokan Reservoir ⓘ |
| use |
flood control (limited)
ⓘ
municipal water supply ⓘ |
| waterBody | Esopus Creek impoundment ⓘ |
| waterQualityRole | settling of suspended sediments from Esopus Creek ⓘ |
| waterSupplyFor | New York City ⓘ |
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: West Basin of Ashokan Reservoir Description of subject: The West Basin of Ashokan Reservoir is the western section of the Ashokan Reservoir in New York’s Catskill Mountains, serving as part of a major water supply system for New York City.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.