Neversink Dam
E729298
Neversink Dam is a large earthen reservoir dam in New York’s Catskill Mountains that forms part of the New York City water supply system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Neversink Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8297827 — 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: Neversink Dam Context triple: [Neversink River, impoundedBy, Neversink Dam]
-
A.
Rondout Dam
Rondout Dam is a major earthen dam in New York that impounds the Rondout Reservoir as part of the New York City water supply system.
-
B.
Kensico Dam
Kensico Dam is a massive early-20th-century masonry dam in Valhalla, New York, that forms the Kensico Reservoir and serves as a key component of New York City's water supply system.
-
C.
Shawmut Dam
Shawmut Dam is a hydroelectric dam located on Maine’s Kennebec River, used for power generation and river flow management.
-
D.
Palisades Dam
Palisades Dam is a large earthfill dam in eastern Idaho that provides irrigation water storage, hydroelectric power, and flood control on the upper Snake River.
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E.
Watertown Dam
Watertown Dam is a historic low-head dam on the Charles River in Watertown, Massachusetts, that once powered local industry and now helps regulate river flow and fish passage.
- 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: Neversink Dam Target entity description: Neversink Dam is a large earthen reservoir dam in New York’s Catskill Mountains that forms part of the New York City water supply system.
-
A.
Rondout Dam
Rondout Dam is a major earthen dam in New York that impounds the Rondout Reservoir as part of the New York City water supply system.
-
B.
Kensico Dam
Kensico Dam is a massive early-20th-century masonry dam in Valhalla, New York, that forms the Kensico Reservoir and serves as a key component of New York City's water supply system.
-
C.
Shawmut Dam
Shawmut Dam is a hydroelectric dam located on Maine’s Kennebec River, used for power generation and river flow management.
-
D.
Palisades Dam
Palisades Dam is a large earthfill dam in eastern Idaho that provides irrigation water storage, hydroelectric power, and flood control on the upper Snake River.
-
E.
Watertown Dam
Watertown Dam is a historic low-head dam on the Charles River in Watertown, Massachusetts, that once powered local industry and now helps regulate river flow and fish passage.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
earthfill dam
ⓘ
reservoir dam ⓘ |
| accessRestricted | yes ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| completionDate | 1953 ⓘ |
| constructionMaterial |
earth
ⓘ
rock fill ⓘ |
| constructionStartDate | 1941 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Neversink River NERFINISHED ⓘ |
| damType | earthen embankment ⓘ |
| formsReservoir | Neversink Reservoir NERFINISHED ⓘ |
| hasCatchmentArea | Neversink River watershed NERFINISHED ⓘ |
| hasOutletWorks | yes ⓘ |
| hasSpillway | yes ⓘ |
| height | about 195 feet ⓘ |
| isPartOfInfrastructure | New York City water tunnels and reservoirs network NERFINISHED ⓘ |
| length | about 2,000 feet ⓘ |
| locatedIn |
Catskill Mountains
NERFINISHED
ⓘ
New York State NERFINISHED ⓘ Sullivan County, New York NERFINISHED ⓘ Town of Neversink NERFINISHED ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| locatedInWatershed | Delaware River watershed NERFINISHED ⓘ |
| locatedOnRiver | Neversink River NERFINISHED ⓘ |
| managingAgency | New York City Department of Environmental Protection NERFINISHED ⓘ |
| namedAfter | Neversink River NERFINISHED ⓘ |
| nearbySettlement |
Grahamsville, New York
NERFINISHED
ⓘ
Neversink, New York NERFINISHED ⓘ |
| openingDate | 1954 ⓘ |
| operatedBy | New York City Department of Environmental Protection NERFINISHED ⓘ |
| ownedBy |
New York City
ⓘ
surface form:
City of New York
|
| partOf |
Catskill water supply system
NERFINISHED
ⓘ
New York City water supply system NERFINISHED ⓘ |
| primaryUse | drinking water supply ⓘ |
| purpose |
flood control
ⓘ
flow regulation ⓘ municipal water supply ⓘ |
| regionServed | New York City metropolitan area NERFINISHED ⓘ |
| reservoirCapacity | about 34 billion US gallons ⓘ |
| reservoirSurfaceArea | about 1,500 acres ⓘ |
| reservoirUse |
raw water storage
ⓘ
seasonal flow regulation ⓘ |
| usedForRecreation | limited, regulated ⓘ |
| waterSupplyTo | New York City NERFINISHED ⓘ |
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: Neversink Dam Description of subject: Neversink Dam is a large earthen reservoir dam in New York’s Catskill Mountains that forms part of the New York City water supply system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.