Amawalk Reservoir
E25108
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Amawalk Reservoir canonical | 17 |
| Amawalk Reservoir (part) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T91449 — 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: Amawalk Reservoir Context triple: [Croton River, hasPart, Amawalk Reservoir]
-
A.
Cross River Reservoir
Cross River Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
-
B.
East Branch Reservoir
East Branch Reservoir is a man-made water supply reservoir in New York’s Croton Watershed that helps provide drinking water to New York City.
-
C.
Middle Branch Reservoir
Middle Branch Reservoir is a man-made lake in New York’s Croton Watershed that serves as part of the New York City water supply system.
-
D.
Croton Falls Reservoir
Croton Falls Reservoir is a man-made lake in Westchester County, New York, that serves as part of New York City's Croton water supply system.
-
E.
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.
- 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: Amawalk Reservoir Target entity description: Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
-
A.
Cross River Reservoir
Cross River Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
-
B.
East Branch Reservoir
East Branch Reservoir is a man-made water supply reservoir in New York’s Croton Watershed that helps provide drinking water to New York City.
-
C.
Middle Branch Reservoir
Middle Branch Reservoir is a man-made lake in New York’s Croton Watershed that serves as part of the New York City water supply system.
-
D.
Croton Falls Reservoir
Croton Falls Reservoir is a man-made lake in Westchester County, New York, that serves as part of New York City's Croton water supply system.
-
E.
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.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ |
| accessRestricted | true ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| category |
New York City water supply system
ⓘ
Reservoirs in Westchester County, New York ⓘ |
| constructionType | impounding reservoir ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| environmentalManagement | subject to watershed protection regulations ⓘ |
| feeds | downstream Croton system reservoirs ⓘ |
| hasDam | Amawalk Dam ⓘ |
| hasUseRestriction |
controlled fishing access
ⓘ
no body-contact recreation ⓘ no swimming ⓘ |
| inflow |
Amawalk River
ⓘ
linked to:
Waccabuc River
|
| isComponentOf |
Croton water supply subsystem of NYC
ⓘ
linked to:
Croton water supply system
|
| isPartOfInfrastructureFor | New York City Department of Environmental Protection water supply ⓘ |
| isUpstreamOf | New Croton Reservoir ⓘ |
| isWithinJurisdictionOf |
State of New York
ⓘ
linked to:
U.S. state of New York
Westchester County government ⓘ
linked to:
Westchester County, New York
|
| locatedIn |
Hudson River watershed
ⓘ
New York State ⓘ
linked to:
New York
Northeastern United States ⓘ Town of Somers, New York ⓘ
linked to:
Town of Somers
Town of Yorktown, New York ⓘ
linked to:
Town of Yorktown
Westchester County, New York ⓘ |
| locatedNear |
Hamlet of Amawalk, New York
ⓘ
linked to:
Hamlet of Cross River, New York
|
| locatedNorthOf | New York City ⓘ |
| locatedOn | Amawalk River valley ⓘ |
| operator | New York City Department of Environmental Protection ⓘ |
| outflow |
Amawalk River
ⓘ
linked to:
Waccabuc River
|
| ownedBy |
City of New York
ⓘ
linked to:
New York City
|
| partOf |
Croton River system
ⓘ
linked to:
Croton River
Croton Watershed ⓘ Croton water supply system ⓘ New York City water supply system ⓘ upstate New York water supply system of New York City ⓘ
linked to:
New York City water supply system
|
| primaryFunction | supplying water to New York City ⓘ |
| purpose | municipal water supply ⓘ |
| recreation | limited and regulated ⓘ |
| region |
Lower Hudson Valley
ⓘ
linked to:
Hudson Valley
|
| typeOfWaterBody | freshwater lake ⓘ |
| use | drinking water source ⓘ |
| watercourse |
Amawalk River
ⓘ
linked to:
Waccabuc River
|
| waterQualityProtection | regulated by New York City watershed rules ⓘ |
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: Amawalk Reservoir Description of subject: Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Amawalk Reservoir