Caban Coch Reservoir
E233873
Caban Coch Reservoir is a scenic man-made lake in the Elan Valley of mid-Wales, known for its impressive stone dam and role in supplying water to Birmingham.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Caban Coch Reservoir canonical | 6 |
| Caban-coch Reservoir | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2115144 — 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: Caban Coch Reservoir Context triple: [Rhayader, hasNearbyReservoir, Caban Coch Reservoir]
-
A.
Harperrig Reservoir
Harperrig Reservoir is a man-made freshwater reservoir in the Pentland Hills of Scotland, used for water supply, fishing, and recreation.
-
B.
Foziling Reservoir
Foziling Reservoir is a major multipurpose water conservancy project in Anhui Province, China, known for flood control, irrigation, and water supply within the Huai River basin.
-
C.
Howden Reservoir
Howden Reservoir is a large man-made lake in Derbyshire’s Peak District, known as part of the Upper Derwent Valley chain of reservoirs supplying water to nearby cities and popular for its scenic surroundings and outdoor recreation.
-
D.
Smallwood Reservoir
Smallwood Reservoir is a vast man-made lake in Labrador, Canada, created for hydroelectric power generation as part of the Churchill River system.
-
E.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
- 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: Caban Coch Reservoir Target entity description: Caban Coch Reservoir is a scenic man-made lake in the Elan Valley of mid-Wales, known for its impressive stone dam and role in supplying water to Birmingham.
-
A.
Harperrig Reservoir
Harperrig Reservoir is a man-made freshwater reservoir in the Pentland Hills of Scotland, used for water supply, fishing, and recreation.
-
B.
Foziling Reservoir
Foziling Reservoir is a major multipurpose water conservancy project in Anhui Province, China, known for flood control, irrigation, and water supply within the Huai River basin.
-
C.
Howden Reservoir
Howden Reservoir is a large man-made lake in Derbyshire’s Peak District, known as part of the Upper Derwent Valley chain of reservoirs supplying water to nearby cities and popular for its scenic surroundings and outdoor recreation.
-
D.
Smallwood Reservoir
Smallwood Reservoir is a vast man-made lake in Labrador, Canada, created for hydroelectric power generation as part of the Churchill River system.
-
E.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ |
| architecturalStyleOfDam | Victorian engineering ⓘ |
| basinCountry | United Kingdom ⓘ |
| constructionMaterialOfDam | stone ⓘ |
| country | Wales ⓘ |
| createdBy | Caban Coch Dam ⓘ |
| elevation | approximately 260 metres above sea level ⓘ |
| feeds |
Garreg Ddu Reservoir (downstream via system)
ⓘ
linked to:
Garreg Ddu Reservoir
|
| hasAccessRoad | B4518 ⓘ |
| hasCatchmentArea | upland area of the Cambrian Mountains ⓘ |
| hasDamType | gravity dam ⓘ |
| hasFeature |
overflowing spillway that creates waterfall effect
ⓘ
stone-faced dam ⓘ |
| hasNearbyFacility |
Elan Valley Visitor Centre
ⓘ
linked to:
Elan Valley
|
| hasRecreationalUse |
sightseeing
ⓘ
walking ⓘ wildlife watching ⓘ |
| hasSpillway | overflow spillway over dam crest ⓘ |
| hasStructure | Caban Coch Dam ⓘ |
| isPartOf | historic Birmingham Corporation water scheme ⓘ |
| isScenic | true ⓘ |
| locatedIn |
Elan Valley
ⓘ
Powys ⓘ mid-Wales ⓘ
linked to:
Mid Wales
|
| managedBy | Dŵr Cymru Welsh Water ⓘ |
| near |
Elan Village
ⓘ
linked to:
Elan Valley Estate
Rhayader ⓘ |
| notUsedFor | hydroelectric power generation (primary purpose) ⓘ |
| openedForWaterSupplyToBirmingham | 1904 ⓘ |
| ownedBy | Welsh Water ⓘ |
| partOf |
Birmingham water supply system
ⓘ
Elan Valley Estate ⓘ Elan Valley Reservoirs ⓘ
linked to:
Elan Valley reservoirs
Elan Valley waterworks scheme ⓘ
linked to:
Elan Valley reservoirs
|
| purpose |
drinking water supply
ⓘ
municipal water supply ⓘ |
| region |
Ceredigion and Powys border area
ⓘ
linked to:
Mid Wales
|
| suppliesWaterTo | Birmingham ⓘ |
| usedFor |
hydraulic head for water supply system
ⓘ
water storage ⓘ |
| watercourse | River Elan ⓘ |
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: Caban Coch Reservoir Description of subject: Caban Coch Reservoir is a scenic man-made lake in the Elan Valley of mid-Wales, known for its impressive stone dam and role in supplying water to Birmingham.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Caban Coch Reservoir
linked to: Caban Coch Reservoir