Cheruthoni Dam
E848415
Cheruthoni Dam is a major concrete gravity dam in Kerala, India, forming part of the Idukki Hydroelectric Project and helping create one of the largest artificial lakes in the state.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Cheruthoni Dam canonical | 3 |
| Idukki Reservoir | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10141642 — 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: Cheruthoni Dam Context triple: [Idukki district, contains, Cheruthoni Dam]
-
A.
Orathuppalayam Dam
Orathuppalayam Dam is a reservoir and irrigation structure built across the Noyyal River in Tamil Nadu, India, primarily used for water storage and agricultural purposes.
-
B.
Mettur Dam
Mettur Dam is a major masonry dam in Tamil Nadu, India, built across the Kaveri River and known for its large reservoir and role in irrigation and power generation.
-
C.
Gajanur Dam
Gajanur Dam is a scenic reservoir and popular tourist spot in Karnataka, India, known for its lush surroundings and role in irrigation and water management near Shivamogga.
-
D.
Thippagondanahalli Dam
Thippagondanahalli Dam is a major reservoir and water supply structure near Bengaluru in Karnataka, India, built across the Arkavathi River to provide drinking water and irrigation.
-
E.
Kotmale Dam
Kotmale Dam is a major hydroelectric and irrigation dam in Sri Lanka, forming part of the Mahaweli Development Programme and creating the Kotmale Reservoir.
- 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: Cheruthoni Dam Target entity description: Cheruthoni Dam is a major concrete gravity dam in Kerala, India, forming part of the Idukki Hydroelectric Project and helping create one of the largest artificial lakes in the state.
-
A.
Orathuppalayam Dam
Orathuppalayam Dam is a reservoir and irrigation structure built across the Noyyal River in Tamil Nadu, India, primarily used for water storage and agricultural purposes.
-
B.
Mettur Dam
Mettur Dam is a major masonry dam in Tamil Nadu, India, built across the Kaveri River and known for its large reservoir and role in irrigation and power generation.
-
C.
Gajanur Dam
Gajanur Dam is a scenic reservoir and popular tourist spot in Karnataka, India, known for its lush surroundings and role in irrigation and water management near Shivamogga.
-
D.
Thippagondanahalli Dam
Thippagondanahalli Dam is a major reservoir and water supply structure near Bengaluru in Karnataka, India, built across the Arkavathi River to provide drinking water and irrigation.
-
E.
Kotmale Dam
Kotmale Dam is a major hydroelectric and irrigation dam in Sri Lanka, forming part of the Mahaweli Development Programme and creating the Kotmale Reservoir.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
hydroelectric dam ⓘ |
| access | road access from Cheruthoni town ⓘ |
| basinCountry | India ⓘ |
| connectedTo |
Idukki Dam
NERFINISHED
ⓘ
Kulamavu Dam NERFINISHED ⓘ |
| constructionBegan | 1969 ⓘ |
| constructionMaterial | concrete ⓘ |
| country | India ⓘ |
| creates |
Idukki Reservoir
NERFINISHED
ⓘ
one of the largest artificial lakes in Kerala ⓘ |
| damType | gravity ⓘ |
| designedFor | peak load power supply in Kerala grid ⓘ |
| floodEventYear | 2018 ⓘ |
| formsPartOf | Periyar river system NERFINISHED ⓘ |
| formsReservoirWith |
Idukki Dam
NERFINISHED
ⓘ
Kulamavu Dam NERFINISHED ⓘ |
| height | 138.2 metres ⓘ |
| impact | submergence of valleys in Idukki district ⓘ |
| length | 650.9 metres ⓘ |
| locatedIn |
Idukki district
NERFINISHED
ⓘ
Kerala NERFINISHED ⓘ |
| locatedInMountainRange | Western Ghats NERFINISHED ⓘ |
| managedBy | Kerala State Electricity Board Limited NERFINISHED ⓘ |
| near |
Cheruthoni town
ⓘ
Idukki town NERFINISHED ⓘ |
| nearProtectedArea | Idukki Wildlife Sanctuary NERFINISHED ⓘ |
| notableEvent | major controlled spill during 2018 Kerala floods ⓘ |
| numberOfSpillwayGates | 5 ⓘ |
| opened | 1976 ⓘ |
| operator | Kerala State Electricity Board NERFINISHED ⓘ |
| ownedBy | Government of Kerala NERFINISHED ⓘ |
| partOf | Idukki Hydroelectric Project NERFINISHED ⓘ |
| projectInstalledCapacity | 780 MW (Idukki Hydroelectric Project) NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ water storage ⓘ |
| region | Central Kerala NERFINISHED ⓘ |
| reservoirName | Idukki Reservoir NERFINISHED ⓘ |
| reservoirSurfaceArea | 60 square kilometres ⓘ |
| reservoirTotalCapacity | 1996 million cubic metres ⓘ |
| riverCrossed | Cheruthoni River NERFINISHED ⓘ |
| safetyRegulationAuthority | Central Water Commission of India NERFINISHED ⓘ |
| spillwayType | gated overflow spillway ⓘ |
| state | Kerala NERFINISHED ⓘ |
| status | operational ⓘ |
| tourism | popular viewpoint for Idukki Reservoir ⓘ |
| watercourse | Periyar River basin 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: Cheruthoni Dam Description of subject: Cheruthoni Dam is a major concrete gravity dam in Kerala, India, forming part of the Idukki Hydroelectric Project and helping create one of the largest artificial lakes in the state.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Idukki Reservoir
this entity surface form:
Idukki Reservoir