Catskill system reservoirs
E207914
The Catskill system reservoirs are a network of large upstate New York water storage basins that form a major component of New York City’s drinking water supply system.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Catskill system reservoirs canonical | 1 |
| Catskill water supply system | 1 |
| Catskill–Delaware water supply system | 1 |
| Catskill–Delaware water system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1857493 — 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: Catskill system reservoirs Context triple: [New York City distribution tunnels, waterSource, Catskill system reservoirs]
-
A.
Schoharie Reservoir
Schoharie Reservoir is a major upstate New York water supply reservoir that forms part of the New York City water system.
-
B.
Catskill-Delaware Watershed
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
-
C.
Rondout Reservoir
Rondout Reservoir is a major New York City water supply reservoir in the Catskill Mountains, formed by damming Rondout Creek and serving as a key component of the city’s Catskill–Delaware water system.
-
D.
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.
-
E.
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.
- 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: Catskill system reservoirs Target entity description: The Catskill system reservoirs are a network of large upstate New York water storage basins that form a major component of New York City’s drinking water supply system.
-
A.
Schoharie Reservoir
Schoharie Reservoir is a major upstate New York water supply reservoir that forms part of the New York City water system.
-
B.
Catskill-Delaware Watershed
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
-
C.
Rondout Reservoir
Rondout Reservoir is a major New York City water supply reservoir in the Catskill Mountains, formed by damming Rondout Creek and serving as a key component of the city’s Catskill–Delaware water system.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
component of municipal water supply
ⓘ
drinking water reservoir system ⓘ |
| associatedWith | Catskill watershed communities ⓘ |
| connectedBy | Catskill Aqueduct ⓘ |
| constructedFor | long-distance water conveyance to New York City ⓘ |
| conveysWaterVia | gravity-fed aqueduct system ⓘ |
| country | United States of America ⓘ |
| environmentalImpact | alteration of natural river flow regimes in Catskill region ⓘ |
| hasComponent |
Ashokan Reservoir
ⓘ
Cannonsville Reservoir ⓘ Neversink Reservoir ⓘ Pepacton Reservoir ⓘ Rondout Reservoir ⓘ Schoharie Reservoir ⓘ |
| hydrologicRegion |
Catskill-Delaware Watershed
ⓘ
surface form:
Catskill Mountains watershed
|
| infrastructureType | large-scale water storage basins ⓘ |
| locatedIn |
Upstate New York (broad sense)
ⓘ
surface form:
Upstate New York
|
| managedBy | New York City Department of Environmental Protection ⓘ |
| monitoredBy | water quality monitoring programs of NYCDEP ⓘ |
| owner |
New York City
ⓘ
surface form:
City of New York
|
| partOf | New York City water supply system ⓘ |
| primaryUse | drinking water supply ⓘ |
| regulates | seasonal variability in river flows feeding New York City supply ⓘ |
| secondaryUse |
flood control
ⓘ
recreation (restricted and regulated) ⓘ |
| servesPopulation | millions of residents of New York City metropolitan area ⓘ |
| significance | major component of New York City’s drinking water supply ⓘ |
| state | New York ⓘ |
| subjectTo | state and federal drinking water regulations ⓘ |
| suppliesWaterTo | New York City ⓘ |
| waterQualityProtection |
filtration avoidance program for New York City
ⓘ
watershed land management ⓘ |
| waterSourceType | surface water ⓘ |
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: Catskill system reservoirs Description of subject: The Catskill system reservoirs are a network of large upstate New York water storage basins that form a major component of New York City’s drinking water supply system.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Catskill water supply system
this entity surface form:
Catskill–Delaware water supply system
this entity surface form:
Catskill–Delaware water system