Idukki Arch Dam
E847023
The Idukki Arch Dam is a massive double-curvature concrete arch dam in Kerala, India, renowned for its hydroelectric power generation and dramatic setting between steep granite hills.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Idukki Arch Dam canonical | 3 |
| Idukki Dam | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10141640 — 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: Idukki Arch Dam Context triple: [Idukki district, knownFor, Idukki Arch Dam]
-
A.
Mattupetty Dam
Mattupetty Dam is a scenic concrete storage dam and popular lakeside tourist spot near Munnar in Kerala, India, known for its tranquil reservoir, boating, and surrounding hill views.
-
B.
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.
-
C.
Ralco Dam
Ralco Dam is a major hydroelectric power plant in Chile, known for its large reservoir and controversial impact on the local environment and indigenous communities.
-
D.
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.
-
E.
Hirakud Dam
Hirakud Dam is one of the world’s longest earthen dams, built across the Mahanadi River in Odisha, India, primarily for flood control, irrigation, and hydroelectric 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: Idukki Arch Dam Target entity description: The Idukki Arch Dam is a massive double-curvature concrete arch dam in Kerala, India, renowned for its hydroelectric power generation and dramatic setting between steep granite hills.
-
A.
Mattupetty Dam
Mattupetty Dam is a scenic concrete storage dam and popular lakeside tourist spot near Munnar in Kerala, India, known for its tranquil reservoir, boating, and surrounding hill views.
-
B.
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.
-
C.
Ralco Dam
Ralco Dam is a major hydroelectric power plant in Chile, known for its large reservoir and controversial impact on the local environment and indigenous communities.
-
D.
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.
-
E.
Hirakud Dam
Hirakud Dam is one of the world’s longest earthen dams, built across the Mahanadi River in Odisha, India, primarily for flood control, irrigation, and hydroelectric power generation.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
arch dam
ⓘ
concrete dam ⓘ hydroelectric dam ⓘ |
| builtAcross | Periyar River NERFINISHED ⓘ |
| category |
Dams in Kerala
ⓘ
Hydroelectric power stations in Kerala ⓘ |
| connectedTo |
Cheruthoni Dam
NERFINISHED
ⓘ
Kulamavu Dam NERFINISHED ⓘ |
| constructionBegan | 1969 ⓘ |
| constructionMaterial | mass concrete ⓘ |
| continent | Asia ⓘ |
| country | India ⓘ |
| crosses | Periyar River NERFINISHED ⓘ |
| damType | double-curvature arch dam ⓘ |
| designedBy | Central Water and Power Commission of India NERFINISHED ⓘ |
| formsReservoir | Idukki Reservoir NERFINISHED ⓘ |
| height |
about 168.91 metres
ⓘ
about 554 feet ⓘ |
| inaugurated | 1975 ⓘ |
| installedCapacity | about 780 MW ⓘ |
| length |
about 1200 feet
ⓘ
about 365.85 metres ⓘ |
| locatedBetween |
Kurathi hill
NERFINISHED
ⓘ
Kuravan hill NERFINISHED ⓘ |
| locatedIn |
Idukki district
NERFINISHED
ⓘ
Kerala NERFINISHED ⓘ |
| managedBy | Kerala State Electricity Board Limited NERFINISHED ⓘ |
| material | concrete ⓘ |
| nearCity | Idukki NERFINISHED ⓘ |
| nearTown | Cheruthoni NERFINISHED ⓘ |
| notableFor |
double-curvature arch design
ⓘ
dramatic setting between steep granite hills ⓘ one of the highest arch dams in Asia ⓘ |
| openingDate | 1975 ⓘ |
| operator | Kerala State Electricity Board NERFINISHED ⓘ |
| owner | Kerala State Electricity Board NERFINISHED ⓘ |
| partOf | Idukki Hydroelectric Project NERFINISHED ⓘ |
| powerStation | Idukki Hydroelectric Power Station NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ power generation ⓘ |
| region | Western Ghats NERFINISHED ⓘ |
| reservoirName | Idukki Reservoir NERFINISHED ⓘ |
| reservoirUse |
irrigation support in downstream areas
ⓘ
power generation ⓘ |
| river | Periyar River NERFINISHED ⓘ |
| safetyFeature | spillway provided at Cheruthoni Dam ⓘ |
| state | Kerala NERFINISHED ⓘ |
| tourism | major tourist attraction in Idukki district ⓘ |
| valley | Periyar gorge 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: Idukki Arch Dam Description of subject: The Idukki Arch Dam is a massive double-curvature concrete arch dam in Kerala, India, renowned for its hydroelectric power generation and dramatic setting between steep granite hills.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Idukki Dam