Croton Lake
E848658
Croton Lake is a reservoir in Westchester County, New York, that serves as a key component of New York City’s drinking water supply system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Croton Lake canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4818226 — 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: Croton Lake Context triple: [Croton Watershed, contains, Croton Lake]
-
A.
Indian Lake
Indian Lake is a small town and popular outdoor recreation area in the central Adirondack Mountains of upstate New York, known for its forests, lakes, and wilderness activities.
-
B.
Waccabuc Lake
Waccabuc Lake is a scenic freshwater lake in the hamlet of Waccabuc in Lewisboro, Westchester County, New York, known for its quiet residential setting and recreational use by local residents.
-
C.
Nickajack Lake
Nickajack Lake is a man-made reservoir in southeastern Tennessee known for its scenic mountain surroundings, recreational boating and fishing, and the nearby Nickajack Cave wildlife area.
-
D.
Greenwood Lake
Greenwood Lake is a scenic glacial lake straddling the border of New York and New Jersey, popular for boating, fishing, and lakeside recreation.
-
E.
Caburgua Lake
Caburgua Lake is a scenic glacial lake in southern Chile, known for its clear waters, surrounding forests, and proximity to the Villarrica National Park and volcano.
- 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: Croton Lake Target entity description: Croton Lake is a reservoir in Westchester County, New York, that serves as a key component of New York City’s drinking water supply system.
-
A.
Indian Lake
Indian Lake is a small town and popular outdoor recreation area in the central Adirondack Mountains of upstate New York, known for its forests, lakes, and wilderness activities.
-
B.
Waccabuc Lake
Waccabuc Lake is a scenic freshwater lake in the hamlet of Waccabuc in Lewisboro, Westchester County, New York, known for its quiet residential setting and recreational use by local residents.
-
C.
Nickajack Lake
Nickajack Lake is a man-made reservoir in southeastern Tennessee known for its scenic mountain surroundings, recreational boating and fishing, and the nearby Nickajack Cave wildlife area.
-
D.
Greenwood Lake
Greenwood Lake is a scenic glacial lake straddling the border of New York and New Jersey, popular for boating, fishing, and lakeside recreation.
-
E.
Caburgua Lake
Caburgua Lake is a scenic glacial lake in southern Chile, known for its clear waters, surrounding forests, and proximity to the Villarrica National Park and volcano.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| accessPolicy | restricted public access ⓘ |
| basinCountry | United States of America ⓘ |
| connectsTo |
New Croton Aqueduct
NERFINISHED
ⓘ
New Croton Dam NERFINISHED ⓘ |
| country | United States of America ⓘ |
| ecosystemType | freshwater reservoir ⓘ |
| fedBy | Croton River tributaries ⓘ |
| formedBy | New Croton Dam NERFINISHED ⓘ |
| hasFunction | regulating Croton River flow ⓘ |
| hasInfrastructure | intake works for New Croton Aqueduct ⓘ |
| hasShorelineUseRestriction |
no boating without permit
ⓘ
no fishing without permit ⓘ no swimming ⓘ |
| hasTypeOfDam | gravity dam (New Croton Dam) ⓘ |
| isComponentOf | New York City surface water supply network NERFINISHED ⓘ |
| isUpstreamOf | lower Croton River NERFINISHED ⓘ |
| locatedEastOf | Hudson River NERFINISHED ⓘ |
| locatedIn |
New York State
NERFINISHED
ⓘ
Westchester County, New York ⓘ |
| locatedInProtectedArea | New York City water supply watershed lands NERFINISHED ⓘ |
| locatedNear |
Cortlandt, New York
NERFINISHED
ⓘ
Croton-on-Hudson, New York NERFINISHED ⓘ Yorktown, New York NERFINISHED ⓘ |
| locatedOnWatercourse | Croton River NERFINISHED ⓘ |
| managedBy | New York City Department of Environmental Protection NERFINISHED ⓘ |
| mouthTo | Croton River (downstream of dam) NERFINISHED ⓘ |
| nearRailLine | Metro-North Railroad Hudson Line (regionally nearby) NERFINISHED ⓘ |
| nearTransportRoute |
New York State Route 129
NERFINISHED
ⓘ
New York State Route 134 NERFINISHED ⓘ |
| operator | New York City Department of Environmental Protection NERFINISHED ⓘ |
| owner |
New York City
ⓘ
surface form:
City of New York
|
| partOf |
Croton River system
NERFINISHED
ⓘ
Croton Watershed NERFINISHED ⓘ Croton water supply system NERFINISHED ⓘ New York City Croton water supply zone ⓘ New York City water supply system ⓘ |
| primaryFunction | supplying drinking water to New York City ⓘ |
| region | Hudson Valley ⓘ |
| suppliesWaterTo |
New York City
NERFINISHED
ⓘ
parts of Westchester County ⓘ |
| use |
drinking water supply
ⓘ
flood control (secondary) ⓘ municipal water storage ⓘ |
| waterQualityProtection | subject to watershed regulations ⓘ |
| waterSource | Croton River NERFINISHED ⓘ |
| waterUseCategory | public water supply ⓘ |
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: Croton Lake Description of subject: Croton Lake is a reservoir in Westchester County, New York, that serves as a key component of New York City’s drinking water supply system.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.