Foster Dam
E644137
Foster Dam is a hydroelectric and flood-control dam located on the South Santiam River in western Oregon, forming Foster Lake near the city of Sweet Home.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Foster Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6710358 — 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: Foster Dam Context triple: [Santiam River, hasDam, Foster Dam]
-
A.
Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
-
B.
Merwin Dam
Merwin Dam is a hydroelectric dam on Washington State’s Lewis River that forms Lake Merwin and generates power for the region.
-
C.
Belver Dam
Belver Dam is a hydroelectric dam on the Tagus River in Portugal, used primarily for power generation and river flow regulation.
-
D.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
E.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
- 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: Foster Dam Target entity description: Foster Dam is a hydroelectric and flood-control dam located on the South Santiam River in western Oregon, forming Foster Lake near the city of Sweet Home.
-
A.
Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
-
B.
Merwin Dam
Merwin Dam is a hydroelectric dam on Washington State’s Lewis River that forms Lake Merwin and generates power for the region.
-
C.
Belver Dam
Belver Dam is a hydroelectric dam on the Tagus River in Portugal, used primarily for power generation and river flow regulation.
-
D.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
E.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
concrete-gravity dam
ⓘ
flood-control dam ⓘ hydroelectric dam ⓘ |
| builder | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| catchmentArea | South Santiam River basin NERFINISHED ⓘ |
| completedIn | 1968 ⓘ |
| constructionBegan | 1961 ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| downstreamOf | Green Peter Dam NERFINISHED ⓘ |
| formsReservoir |
Foster Lake
NERFINISHED
ⓘ
Foster Reservoir NERFINISHED ⓘ |
| hasPowerPlant | Foster Dam Powerhouse NERFINISHED ⓘ |
| hasSpillway | gated spillway ⓘ |
| height | about 126 feet ⓘ |
| installedCapacity | about 20 megawatts ⓘ |
| length | about 4,565 feet ⓘ |
| locatedIn |
Linn County, Oregon
NERFINISHED
ⓘ
Willamette River basin NERFINISHED ⓘ |
| locatedNear | Sweet Home, Oregon NERFINISHED ⓘ |
| locatedOnRiver | South Santiam River NERFINISHED ⓘ |
| managesFloodRiskFor | communities along the South Santiam River ⓘ |
| nearbyCity | Sweet Home, Oregon NERFINISHED ⓘ |
| numberOfTurbines | 2 ⓘ |
| openingYear | 1968 ⓘ |
| operatedBy |
U.S. Army Corps of Engineers
NERFINISHED
ⓘ
U.S. Army Corps of Engineers Portland District NERFINISHED ⓘ |
| ownedBy | United States government ⓘ |
| partOf | Willamette Valley Project NERFINISHED ⓘ |
| partOfSystemWith | Green Peter Dam NERFINISHED ⓘ |
| provides |
downstream flow augmentation for fish habitat
ⓘ
water level regulation for Foster Lake recreation ⓘ |
| purpose |
downstream flow regulation
ⓘ
flood control ⓘ hydroelectric power generation ⓘ recreation support ⓘ |
| region | western Oregon NERFINISHED ⓘ |
| reservoirCapacity | about 60,000 acre-feet ⓘ |
| state | Oregon ⓘ |
| supportsRecreationAt | Foster Lake NERFINISHED ⓘ |
| turbineType | Francis turbine ⓘ |
| upstreamOf | Sweet Home, Oregon NERFINISHED ⓘ |
| watercourse | South Santiam River 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: Foster Dam Description of subject: Foster Dam is a hydroelectric and flood-control dam located on the South Santiam River in western Oregon, forming Foster Lake near the city of Sweet Home.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.