Karun-4 Dam
E804173
Karun-4 Dam is a major hydroelectric and water storage dam in Iran, built on the Karun River to generate power and support regional water management.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Karun-4 Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9460038 — 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: Karun-4 Dam Context triple: [Karun River, hasDam, Karun-4 Dam]
-
A.
Karun-3 Dam
Karun-3 Dam is a large hydroelectric and flood-control dam in Iran, built on the Karun River to generate power and regulate water resources.
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B.
Karun-1 Dam
Karun-1 Dam is a major hydroelectric arch dam in southwestern Iran, built on the Karun River to generate power and control floods.
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C.
Karaj Dam
Karaj Dam is a major Iranian concrete arch dam near the city of Karaj that provides water supply, irrigation, and hydroelectric power to the Tehran region.
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D.
Sefid-Rud Dam
Sefid-Rud Dam is a major hydroelectric and irrigation dam in northern Iran that regulates the flow of the Sefid-Rud River and supports agriculture in the surrounding region.
-
E.
Aji-IV Dam
Aji-IV Dam is a water reservoir and irrigation dam built on the Aji River in Gujarat, India, primarily serving regional water supply and agricultural needs.
- 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: Karun-4 Dam Target entity description: Karun-4 Dam is a major hydroelectric and water storage dam in Iran, built on the Karun River to generate power and support regional water management.
-
A.
Karun-3 Dam
Karun-3 Dam is a large hydroelectric and flood-control dam in Iran, built on the Karun River to generate power and regulate water resources.
-
B.
Karun-1 Dam
Karun-1 Dam is a major hydroelectric arch dam in southwestern Iran, built on the Karun River to generate power and control floods.
-
C.
Karaj Dam
Karaj Dam is a major Iranian concrete arch dam near the city of Karaj that provides water supply, irrigation, and hydroelectric power to the Tehran region.
-
D.
Sefid-Rud Dam
Sefid-Rud Dam is a major hydroelectric and irrigation dam in northern Iran that regulates the flow of the Sefid-Rud River and supports agriculture in the surrounding region.
-
E.
Aji-IV Dam
Aji-IV Dam is a water reservoir and irrigation dam built on the Aji River in Gujarat, India, primarily serving regional water supply and agricultural needs.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
arch dam
ⓘ
hydroelectric dam ⓘ reservoir dam ⓘ |
| annualGeneration | about 2100 GWh ⓘ |
| builtBy | Iranian contractors ⓘ |
| catchmentArea | about 29,000 km² ⓘ |
| commissioningDate | 2011 ⓘ |
| constructionStart | 1997 ⓘ |
| country | Iran ⓘ |
| crestElevation | about 1032 m above sea level ⓘ |
| crestWidth | 15 m ⓘ |
| damVolume | 1,700,000 m³ ⓘ |
| designedBy | Mahab Ghodss Consulting Engineering Company NERFINISHED ⓘ |
| downstreamFrom | Karun-1 Dam NERFINISHED ⓘ |
| fundedBy | Government of Iran NERFINISHED ⓘ |
| heightFromFoundation | 230 m ⓘ |
| heightFromRiverBed | about 220 m ⓘ |
| impact |
creation of Karun-4 Reservoir
ⓘ
increased electricity supply in southwestern Iran ⓘ reduction of downstream flooding risk ⓘ regulation of Karun River flow ⓘ |
| installedCapacity | 1000 MW ⓘ |
| length | 440 m ⓘ |
| locatedInMountainRange | Zagros Mountains NERFINISHED ⓘ |
| locatedInProvince | Chaharmahal and Bakhtiari Province NERFINISHED ⓘ |
| locatedOnRiver | Karun River NERFINISHED ⓘ |
| nearCity |
Izeh
NERFINISHED
ⓘ
Lordegan NERFINISHED ⓘ |
| numberOfTurbines | 4 ⓘ |
| openingDate | 2011 ⓘ |
| operator | Iran Water and Power Resources Development Company NERFINISHED ⓘ |
| owner | Iran Water and Power Resources Development Company NERFINISHED ⓘ |
| partOfCascade | Karun River hydropower cascade NERFINISHED ⓘ |
| plantType | conventional hydroelectric power plant ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation support ⓘ regional water management ⓘ water storage ⓘ |
| reservoirActiveCapacity | about 1,400,000,000 m³ ⓘ |
| reservoirSurfaceArea | 29 km² ⓘ |
| reservoirTotalCapacity | 2,190,000,000 m³ ⓘ |
| riverBasin | Karun River basin NERFINISHED ⓘ |
| spillwayCapacity | about 6500 m³/s ⓘ |
| spillwayType | gated spillway ⓘ |
| turbineCapacity | 250 MW ⓘ |
| turbineType | Francis turbine ⓘ |
| upstreamFrom | Karun-3 Dam 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: Karun-4 Dam Description of subject: Karun-4 Dam is a major hydroelectric and water storage dam in Iran, built on the Karun River to generate power and support regional water management.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.