Croton Dam
E183858
Croton Dam is a historic masonry dam on New York’s Croton River that was a key early source of drinking water for New York City and is now a notable landmark within Old Croton Aqueduct State Historic Park.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Croton Dam canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1544109 — 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 Dam Context triple: [Old Croton Aqueduct State Historic Park, hasPart, Croton Dam]
-
A.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
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B.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
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C.
Nickajack Dam
Nickajack Dam is a hydroelectric and navigation dam on the Tennessee River in southeastern Tennessee, forming Nickajack Lake and helping control flooding and support regional power generation.
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D.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
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E.
Norris Dam
Norris Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in eastern Tennessee, notable as TVA’s first major dam project and a key component of regional flood control and power generation.
- 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 Dam Target entity description: Croton Dam is a historic masonry dam on New York’s Croton River that was a key early source of drinking water for New York City and is now a notable landmark within Old Croton Aqueduct State Historic Park.
-
A.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
-
B.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
C.
Nickajack Dam
Nickajack Dam is a hydroelectric and navigation dam on the Tennessee River in southeastern Tennessee, forming Nickajack Lake and helping control flooding and support regional power generation.
-
D.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
-
E.
Norris Dam
Norris Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in eastern Tennessee, notable as TVA’s first major dam project and a key component of regional flood control and power generation.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
historic structure ⓘ masonry dam ⓘ |
| accessibleVia |
Old Croton Aqueduct State Historic Park
ⓘ
surface form:
Old Croton Aqueduct State Historic Park trails
|
| associatedWith |
New York City Department of Parks and Recreation
ⓘ
New York State Office of Parks, Recreation and Historic Preservation ⓘ |
| basinServed |
Croton Watershed
ⓘ
New York City water supply system ⓘ |
| category |
Dams in New York State
ⓘ
Historic civil engineering works in the United States ⓘ Infrastructure of New York City water supply system ⓘ |
| connectedTo | Old Croton Aqueduct ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| creates | Croton Reservoir ⓘ |
| crosses | Croton River ⓘ |
| designedFor | long-term water storage ⓘ |
| engineeringDiscipline | civil engineering ⓘ |
| feature |
large spillway
ⓘ
scenic waterfall effect over spillway ⓘ |
| hasFunction |
impoundment of Croton River
ⓘ
regulation of downstream river flow ⓘ |
| heritageStatus | listed within Old Croton Aqueduct State Historic Park ⓘ |
| historicRole | early source of drinking water for New York City ⓘ |
| landmarkStatus | regional landmark in Westchester County ⓘ |
| locatedIn |
New York
ⓘ
surface form:
New York State
Westchester County, New York ⓘ |
| locatedOn | Croton River ⓘ |
| material |
concrete
ⓘ
stone masonry ⓘ |
| near |
Croton-on-Hudson, New York
ⓘ
New Croton Dam Road ⓘ |
| operator | New York City Department of Environmental Protection ⓘ |
| ownedBy | New York City Department of Environmental Protection ⓘ |
| partOf |
Croton Watershed
ⓘ
surface form:
Croton River watershed
Old Croton Aqueduct State Historic Park ⓘ |
| purpose |
drinking water storage
ⓘ
municipal water supply ⓘ |
| recreation |
hiking access nearby
ⓘ
picnic areas nearby ⓘ |
| significance |
key component of early New York City water system
ⓘ
notable regional landmark ⓘ |
| tourism |
popular photography location
ⓘ
popular sightseeing destination ⓘ |
| usedFor | recreation in surrounding parklands ⓘ |
| viewpointFor | Croton Gorge ⓘ |
| watercourse | Croton River ⓘ |
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 Dam Description of subject: Croton Dam is a historic masonry dam on New York’s Croton River that was a key early source of drinking water for New York City and is now a notable landmark within Old Croton Aqueduct State Historic Park.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.