East Basin of Ashokan Reservoir
E299095
The East Basin of Ashokan Reservoir is one of the two main water-holding sections of the Ashokan Reservoir in New York, playing a key role in storing and supplying drinking water to New York City.
All labels observed (1)
| Label | Occurrences |
|---|---|
| East Basin of Ashokan Reservoir canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2735273 — 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: East Basin of Ashokan Reservoir Context triple: [Ashokan Reservoir, hasPart, East Basin of Ashokan Reservoir]
-
A.
Katonah Reservoir
Katonah Reservoir is a man-made water body in Westchester County, New York, that forms part of the New York City water supply system.
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B.
Boonton Reservoir
Boonton Reservoir is a man-made lake in northern New Jersey that serves as a major water supply source and recreational area for the surrounding region.
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C.
Titicus Reservoir
Titicus Reservoir is a man-made lake in Westchester County, New York, that serves as one of the key water supply reservoirs for New York City.
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D.
Union Valley Reservoir
Union Valley Reservoir is a large man-made lake in California’s Sierra Nevada used for recreation and hydroelectric power within Eldorado National Forest.
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E.
Kensico Reservoir
Kensico Reservoir is a major New York City water supply reservoir located in Westchester County, New York, known for its role in storing and regulating drinking water from the Catskill and Delaware systems.
- 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: East Basin of Ashokan Reservoir Target entity description: The East Basin of Ashokan Reservoir is one of the two main water-holding sections of the Ashokan Reservoir in New York, playing a key role in storing and supplying drinking water to New York City.
-
A.
Katonah Reservoir
Katonah Reservoir is a man-made water body in Westchester County, New York, that forms part of the New York City water supply system.
-
B.
Boonton Reservoir
Boonton Reservoir is a man-made lake in northern New Jersey that serves as a major water supply source and recreational area for the surrounding region.
-
C.
Titicus Reservoir
Titicus Reservoir is a man-made lake in Westchester County, New York, that serves as one of the key water supply reservoirs for New York City.
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D.
Union Valley Reservoir
Union Valley Reservoir is a large man-made lake in California’s Sierra Nevada used for recreation and hydroelectric power within Eldorado National Forest.
-
E.
Kensico Reservoir
Kensico Reservoir is a major New York City water supply reservoir located in Westchester County, New York, known for its role in storing and regulating drinking water from the Catskill and Delaware systems.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
reservoir basin
ⓘ
water supply infrastructure ⓘ |
| accessRestrictedBy | New York City Department of Environmental Protection regulations ⓘ |
| basinOf | New York City water supply system ⓘ |
| connectedTo | West Basin of Ashokan Reservoir ⓘ |
| country | United States of America ⓘ |
| function |
drinking water storage
ⓘ
drinking water supply to New York City ⓘ |
| hasEnvironmentalRole |
aquatic habitat
ⓘ
flood control moderation within reservoir system ⓘ |
| hasInfrastructure |
intake works for Catskill Aqueduct
ⓘ
monitoring and control facilities ⓘ |
| locatedIn |
New York State
ⓘ
Ulster County ⓘ
surface form:
Ulster County, New York
|
| near |
Town of Hurley, New York
ⓘ
Town of Olive, New York ⓘ |
| oneOf | two main basins of Ashokan Reservoir ⓘ |
| operatedBy | New York City Department of Environmental Protection ⓘ |
| ownedBy |
New York City
ⓘ
surface form:
City of New York
|
| partOf |
Ashokan Reservoir
ⓘ
Ashokan Reservoir impoundment of Esopus Creek ⓘ Catskill–Delaware water supply system ⓘ
surface form:
New York City Department of Environmental Protection Catskill-Delaware system operations
New York City watershed lands ⓘ |
| partOfSystem |
Catskill–Delaware water supply system
ⓘ
surface form:
Catskill water supply system
|
| primaryUse | potable water supply ⓘ |
| receivesWaterFrom | Ashokan Reservoir watershed ⓘ |
| regulatedBy | New York State Department of Environmental Conservation ⓘ |
| regulatesFlowTo |
Catskill Aqueduct
ⓘ
surface form:
Catskill Aqueduct intake structures
|
| separatedBy | dividing weir at Ashokan Reservoir ⓘ |
| separatedFrom | West Basin of Ashokan Reservoir ⓘ |
| servesPopulation |
New York City residents
ⓘ
downstream communities via New York City water system ⓘ |
| subjectTo |
drinking water quality standards
ⓘ
watershed protection rules ⓘ |
| use |
municipal water supply
ⓘ
raw water storage prior to treatment ⓘ |
| waterManagedFor |
New York City demand patterns
ⓘ
seasonal hydrologic conditions in Catskill region ⓘ |
| waterSourceFor | Catskill Aqueduct ⓘ |
| waterType | freshwater ⓘ |
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: East Basin of Ashokan Reservoir Description of subject: The East Basin of Ashokan Reservoir is one of the two main water-holding sections of the Ashokan Reservoir in New York, playing a key role in storing and supplying drinking water to New York City.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.