Island Park Dam
E726759
Island Park Dam is an earthfill dam on the Henrys Fork of the Snake River in eastern Idaho, primarily used for irrigation water storage and flood control.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Island Park Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7881375 — 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: Island Park Dam Context triple: [Island Park, Idaho, servedBy, Island Park Dam]
-
A.
Palisade Dam
Palisade Dam is an irrigation and water storage structure located on the Sevier River in central Utah, supporting local agriculture and recreation.
-
B.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
-
C.
Libby Dam
Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
-
D.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
E.
Forge Dam
Forge Dam is a popular recreational park and former industrial mill site along Porter Brook in Sheffield, England, known for its woodland walks, playground, and café.
- 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: Island Park Dam Target entity description: Island Park Dam is an earthfill dam on the Henrys Fork of the Snake River in eastern Idaho, primarily used for irrigation water storage and flood control.
-
A.
Palisade Dam
Palisade Dam is an irrigation and water storage structure located on the Sevier River in central Utah, supporting local agriculture and recreation.
-
B.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
-
C.
Libby Dam
Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
-
D.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
E.
Forge Dam
Forge Dam is a popular recreational park and former industrial mill site along Porter Brook in Sheffield, England, known for its woodland walks, playground, and café.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
earthfill dam
ⓘ
embankment dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionBegan | 1937 ⓘ |
| constructionMaterial | earthfill ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crestElevation | 6350 feet ⓘ |
| hasSpillwayType | uncontrolled overflow spillway ⓘ |
| hasUse |
fish and wildlife habitat support
ⓘ
recreation ⓘ |
| height | 91 feet ⓘ |
| impounds | Island Park Reservoir NERFINISHED ⓘ |
| length | 960 feet ⓘ |
| locatedIn |
Fremont County, Idaho
NERFINISHED
ⓘ
Idaho ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInRegion |
Upper Snake River Basin
NERFINISHED
ⓘ
eastern Idaho NERFINISHED ⓘ |
| locatedOnWaterway |
Henrys Fork
NERFINISHED
ⓘ
Henrys Fork of the Snake River NERFINISHED ⓘ |
| managingAgency | United States Bureau of Reclamation NERFINISHED ⓘ |
| near | Island Park, Idaho NERFINISHED ⓘ |
| opened | 1939 ⓘ |
| operator | United States Bureau of Reclamation NERFINISHED ⓘ |
| ownedBy | United States Bureau of Reclamation NERFINISHED ⓘ |
| partOf | Minidoka Project NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
irrigation water storage ⓘ |
| reservoirCapacity | 135200 acre-feet ⓘ |
| reservoirName | Island Park Reservoir NERFINISHED ⓘ |
| reservoirSurfaceArea | 4700 acres ⓘ |
| river | Henrys Fork 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: Island Park Dam Description of subject: Island Park Dam is an earthfill dam on the Henrys Fork of the Snake River in eastern Idaho, primarily used for irrigation water storage and flood control.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.