Saville Dam
E821074
Saville Dam is a large masonry dam in Barkhamsted, Connecticut, that creates the Barkhamsted Reservoir, a major water supply source for the Hartford area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Saville Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9089252 — 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: Saville Dam Context triple: [Barkhamsted, Connecticut, hasPart, Saville Dam]
-
A.
Cluny Dam
Cluny Dam is a hydroelectric dam on Tasmania’s Derwent River that forms part of the state’s power generation and water management system.
-
B.
O’Sullivan Dam
O’Sullivan Dam is a major earth-fill dam in central Washington State that forms Potholes Reservoir and plays a key role in irrigation and water management for the Columbia Basin Project.
-
C.
Keswick Dam
Keswick Dam is a concrete gravity dam on the Sacramento River in Northern California that regulates flows and generates hydroelectric power as part of the region’s large federal water management system.
-
D.
Hinze Dam
Hinze Dam is a major rock and earth-fill dam on the Gold Coast in Queensland, Australia, that creates Advancetown Lake and supplies water, flood mitigation, and recreation for the region.
-
E.
Roxburgh Dam
Roxburgh Dam is a major hydroelectric power station in New Zealand’s South Island, known for harnessing the Clutha River / Mata-Au to generate electricity.
- 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: Saville Dam Target entity description: Saville Dam is a large masonry dam in Barkhamsted, Connecticut, that creates the Barkhamsted Reservoir, a major water supply source for the Hartford area.
-
A.
Cluny Dam
Cluny Dam is a hydroelectric dam on Tasmania’s Derwent River that forms part of the state’s power generation and water management system.
-
B.
O’Sullivan Dam
O’Sullivan Dam is a major earth-fill dam in central Washington State that forms Potholes Reservoir and plays a key role in irrigation and water management for the Columbia Basin Project.
-
C.
Keswick Dam
Keswick Dam is a concrete gravity dam on the Sacramento River in Northern California that regulates flows and generates hydroelectric power as part of the region’s large federal water management system.
-
D.
Hinze Dam
Hinze Dam is a major rock and earth-fill dam on the Gold Coast in Queensland, Australia, that creates Advancetown Lake and supplies water, flood mitigation, and recreation for the region.
-
E.
Roxburgh Dam
Roxburgh Dam is a major hydroelectric power station in New Zealand’s South Island, known for harnessing the Clutha River / Mata-Au to generate electricity.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
masonry dam
ⓘ
water supply dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| category |
Buildings and structures in Litchfield County, Connecticut
ⓘ
Dams in Connecticut ⓘ Water supply infrastructure in Connecticut ⓘ |
| constructionStartDate | 1936 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| creates | Barkhamsted Reservoir NERFINISHED ⓘ |
| crosses | Farmington River NERFINISHED ⓘ |
| function | impoundment of Farmington River ⓘ |
| hasDownstreamRiver | Farmington River NERFINISHED ⓘ |
| hasPublicAccessAlongRoad | yes ⓘ |
| hasSpillway | yes ⓘ |
| hasStructure |
gatehouse
ⓘ
intake tower ⓘ |
| hasViewpoint | roadway along dam crest ⓘ |
| height | approximately 135 feet ⓘ |
| isPartOf | Metropolitan District Commission water system NERFINISHED ⓘ |
| isTouristAttraction | yes ⓘ |
| length | approximately 1,950 feet ⓘ |
| locatedIn |
Barkhamsted, Connecticut
NERFINISHED
ⓘ
Connecticut ⓘ Litchfield County, Connecticut NERFINISHED ⓘ |
| locatedInWatershed | Farmington River watershed NERFINISHED ⓘ |
| locatedNear |
Barkhamsted Center, Connecticut
NERFINISHED
ⓘ
Route 318, Connecticut NERFINISHED ⓘ |
| material | masonry ⓘ |
| namedAfter | Calvin D. Saville NERFINISHED ⓘ |
| nearCommunityRelocatedForReservoir | Barkhamsted Hollow NERFINISHED ⓘ |
| openingDate | 1940s ⓘ |
| operator | Metropolitan District Commission of Connecticut NERFINISHED ⓘ |
| owner | Metropolitan District Commission of Connecticut NERFINISHED ⓘ |
| partOf | Hartford regional water supply system NERFINISHED ⓘ |
| primaryPurpose | municipal water supply ⓘ |
| regionServed | Greater Hartford NERFINISHED ⓘ |
| reservoirName | Barkhamsted Reservoir NERFINISHED ⓘ |
| reservoirType | artificial lake ⓘ |
| reservoirUse | drinking water supply ⓘ |
| riverSystem | Connecticut River watershed NERFINISHED ⓘ |
| waterSupplyFor | Hartford, Connecticut metropolitan area 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: Saville Dam Description of subject: Saville Dam is a large masonry dam in Barkhamsted, Connecticut, that creates the Barkhamsted Reservoir, a major water supply source for the Hartford area.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.