Iron Gate Dam
E408087
Iron Gate Dam is a hydroelectric and water-storage dam on the Klamath River in northern California, known for its role in regional power generation and its involvement in major river restoration and dam removal efforts.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Iron Gate Dam canonical | 2 |
| Iron Gate Reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4015914 — 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: Iron Gate Dam Context triple: [Klamath River, hasDam, Iron Gate Dam]
-
A.
Keystone Dam
Keystone Dam is a major flood-control and hydroelectric dam in northeastern Oklahoma that forms Keystone Lake on the Arkansas River.
-
B.
Salto Grande Dam
Salto Grande Dam is a large hydroelectric dam and binational power station on the Uruguay River, jointly operated by Argentina and Uruguay.
-
C.
Istra hydroelectric dam
The Istra hydroelectric dam is a power-generating and water-regulating structure associated with the Istrinskoye Reservoir in the Moscow region of Russia.
-
D.
Krasnoyarsk Dam
The Krasnoyarsk Dam is a massive Soviet-era hydroelectric power station in Siberia, Russia, known for its large reservoir and significant role in regional power generation and river navigation.
-
E.
Grandval Dam
Grandval Dam is a large hydroelectric dam in southern France, known for impounding the Truyère River to form the Lac de Grandval 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: Iron Gate Dam Target entity description: Iron Gate Dam is a hydroelectric and water-storage dam on the Klamath River in northern California, known for its role in regional power generation and its involvement in major river restoration and dam removal efforts.
-
A.
Keystone Dam
Keystone Dam is a major flood-control and hydroelectric dam in northeastern Oklahoma that forms Keystone Lake on the Arkansas River.
-
B.
Salto Grande Dam
Salto Grande Dam is a large hydroelectric dam and binational power station on the Uruguay River, jointly operated by Argentina and Uruguay.
-
C.
Istra hydroelectric dam
The Istra hydroelectric dam is a power-generating and water-regulating structure associated with the Istrinskoye Reservoir in the Moscow region of Russia.
-
D.
Krasnoyarsk Dam
The Krasnoyarsk Dam is a massive Soviet-era hydroelectric power station in Siberia, Russia, known for its large reservoir and significant role in regional power generation and river navigation.
-
E.
Grandval Dam
Grandval Dam is a large hydroelectric dam in southern France, known for impounding the Truyère River to form the Lac de Grandval reservoir.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
hydroelectric dam ⓘ water-storage dam ⓘ |
| associatedWith |
Klamath River dam removal project
ⓘ
Klamath River salmon restoration ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| blocksFishMigration |
anadromous salmon
ⓘ
steelhead trout ⓘ |
| completionDate | 1962 ⓘ |
| constructionBegan | 1950s ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| environmentalImpact |
alteration of sediment transport
ⓘ
changes in water temperature ⓘ disruption of fish passage ⓘ |
| hasFishHatchery | Iron Gate Fish Hatchery ⓘ |
| hasFunction |
peaking power generation
ⓘ
recreation support on Iron Gate Reservoir ⓘ |
| hasReservoir |
Iron Gate Dam
self-linksurface differs
ⓘ
surface form:
Iron Gate Reservoir
|
| hasSpillwayType | gated overflow spillway ⓘ |
| hasStructureMaterial | concrete ⓘ |
| hasTurbineType | Francis turbines ⓘ |
| height |
approximately 173 feet
ⓘ
approximately 53 meters ⓘ |
| installedCapacity | approximately 18 megawatts ⓘ |
| involvedIn |
large-scale dam removal initiative
ⓘ
major river restoration efforts ⓘ |
| length |
approximately 173 meters
ⓘ
approximately 568 feet ⓘ |
| locatedDownstreamOf |
Copco No. 1 Dam
NERFINISHED
ⓘ
Copco No. 2 Dam NERFINISHED ⓘ J.C. Boyle Dam NERFINISHED ⓘ |
| locatedIn |
Northern California
ⓘ
Siskiyou County, California NERFINISHED ⓘ |
| locatedOnRiver | Klamath River ⓘ |
| locatedUpstreamOf |
Klamath River estuary
ⓘ
surface form:
Klamath River mouth at the Pacific Ocean
|
| nearestCity |
Hornbrook, California
ⓘ
Yreka, California ⓘ |
| operatedBy | PacifiCorp ⓘ |
| ownedBy | PacifiCorp ⓘ |
| partOf | Klamath River Hydroelectric Project ⓘ |
| plannedAction | dam removal ⓘ |
| purpose |
flow regulation
ⓘ
hydroelectric power generation ⓘ water storage ⓘ |
| regulatesFlowFor | downstream Klamath River reaches ⓘ |
| riverBasin |
Klamath Basin
ⓘ
surface form:
Klamath River Basin
|
| subjectOfAgreement |
Klamath Hydroelectric Settlement Agreement
ⓘ
surface form:
Klamath Basin Restoration Agreement
Klamath Hydroelectric Settlement Agreement ⓘ |
| watercourseDammed | Klamath River ⓘ |
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: Iron Gate Dam Description of subject: Iron Gate Dam is a hydroelectric and water-storage dam on the Klamath River in northern California, known for its role in regional power generation and its involvement in major river restoration and dam removal efforts.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Iron Gate Reservoir