Charles River Dam
E823981
The Charles River Dam is a major flood-control and navigation structure on the Charles River in Boston that regulates water levels between the river and Boston Harbor.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Charles River Dam canonical | 3 |
| New Charles River Dam | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9081411 — 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: Charles River Dam Context triple: [Leverett Circle, adjacentTo, Charles River Dam]
-
A.
Holyoke Dam
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
-
B.
Gardiner Dam
Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
-
C.
Hoist Dam
Hoist Dam is a hydroelectric dam on Michigan’s Dead River that helps generate power and regulate water flow in the region.
-
D.
Irving Dam
Irving Dam is a man-made structure on Michigan’s Thornapple River used primarily for water level control and related river management.
-
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: Charles River Dam Target entity description: The Charles River Dam is a major flood-control and navigation structure on the Charles River in Boston that regulates water levels between the river and Boston Harbor.
-
A.
Holyoke Dam
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
-
B.
Gardiner Dam
Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
-
C.
Hoist Dam
Hoist Dam is a hydroelectric dam on Michigan’s Dead River that helps generate power and regulate water flow in the region.
-
D.
Irving Dam
Irving Dam is a man-made structure on Michigan’s Thornapple River used primarily for water level control and related river management.
-
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 (26)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
flood control structure ⓘ navigation structure ⓘ |
| connectsTo | Boston Harbor ⓘ |
| controls | saltwater intrusion from Boston Harbor into Charles River ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Charles River ⓘ |
| hasFunction |
flood control
ⓘ
navigation control ⓘ storm surge protection ⓘ |
| isInfrastructureType | hydraulic engineering structure ⓘ |
| isNear |
Charlestown
ⓘ
North End, Boston ⓘ downtown Boston ⓘ |
| isPartOf | Boston flood protection system ⓘ |
| locatedIn |
Boston
ⓘ
linked to:
Boston, Massachusetts
Massachusetts ⓘ United States ⓘ
linked to:
United States of America
|
| manages | tidal influence from Boston Harbor ⓘ |
| partOf | Charles River Basin ⓘ |
| protects |
low-lying areas along the Charles River
ⓘ
parts of Boston from coastal flooding ⓘ |
| regulates |
water level between Charles River and Boston Harbor
ⓘ
water level of Charles River ⓘ |
| river | Charles River ⓘ |
| usedFor | navigation between Charles River and Boston Harbor ⓘ |
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: Charles River Dam Description of subject: The Charles River Dam is a major flood-control and navigation structure on the Charles River in Boston that regulates water levels between the river and Boston Harbor.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Charles River Dam