Holyoke Dam
E152968
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Holyoke Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1217051 — 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: Holyoke Dam Context triple: [Holyoke, Massachusetts, hasLandmark, Holyoke Dam]
-
A.
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.
-
B.
Skowhegan Dam
Skowhegan Dam is a hydroelectric dam on the Kennebec River in Skowhegan, Maine, used for power generation and river flow control.
-
C.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
-
D.
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.
-
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: Holyoke Dam Target entity description: Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
-
A.
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.
-
B.
Skowhegan Dam
Skowhegan Dam is a hydroelectric dam on the Kennebec River in Skowhegan, Maine, used for power generation and river flow control.
-
C.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
-
D.
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.
-
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 (47)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ |
| associatedWith |
Holyoke Gas and Electric Department
ⓘ
surface form:
Holyoke Gas & Electric
|
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| category |
Buildings and structures in Holyoke, Massachusetts
ⓘ
Dams on the Connecticut River ⓘ Energy infrastructure in Massachusetts ⓘ Hydroelectric power plants in Massachusetts ⓘ |
| cityServed | Holyoke, Massachusetts NERFINISHED ⓘ |
| constructionStart | 1847 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county |
Hampden County, Massachusetts
ⓘ
surface form:
Hampden County
|
| energySource | hydropower ⓘ |
| feature | fish ladder ⓘ |
| fishPassageFor |
American shad
ⓘ
Atlantic salmon ⓘ river herring ⓘ |
| hasPowerPlant |
Holyoke Gas and Electric hydroelectric facilities
ⓘ
surface form:
Holyoke Hydroelectric Plant
|
| hasSpillway | yes ⓘ |
| height | approximately 12 meters ⓘ |
| historicRole |
powering Holyoke’s early industrial development
ⓘ
supporting paper mills in Holyoke ⓘ supporting textile mills in Holyoke ⓘ |
| influenced |
development of Holyoke’s paper industry
ⓘ
development of Holyoke’s textile industry ⓘ |
| length | approximately 1,020 meters ⓘ |
| locatedIn | Holyoke, Massachusetts NERFINISHED ⓘ |
| locatedOnRiver | Connecticut River ⓘ |
| material |
concrete (current dam)
ⓘ
timber (original dam) ⓘ |
| near |
Interstate 391
NERFINISHED
ⓘ
South Hadley Falls ⓘ |
| nearbyCity |
Chicopee, Massachusetts
ⓘ
South Hadley, Massachusetts ⓘ |
| opened | 1849 ⓘ |
| operator |
Holyoke Gas and Electric Department
ⓘ
surface form:
Holyoke Gas & Electric Department
|
| partOf | Holyoke Canal System ⓘ |
| purpose |
hydroelectric power generation
ⓘ
industrial power supply ⓘ |
| reconstructed |
1900
ⓘ
1901 ⓘ |
| region | New England ⓘ |
| significance |
central to the planned industrial city of Holyoke
ⓘ
one of the earliest large-scale industrial hydropower sites in the United States ⓘ |
| state | Massachusetts ⓘ |
| status | operational ⓘ |
| watercourse | Connecticut 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: Holyoke Dam Description of subject: Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.