Coast Fork Willamette River
E844190
The Coast Fork Willamette River is a tributary of the Willamette River in western Oregon, flowing north through rural valleys and communities before joining the Middle Fork near Springfield.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Coast Fork Willamette River canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9228152 — 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: Coast Fork Willamette River Context triple: [Cottage Grove, Oregon, traversedBy, Coast Fork Willamette River]
-
A.
Middle Fork Willamette River
The Middle Fork Willamette River is a major tributary of Oregon’s Willamette River, flowing through forested mountain terrain and reservoirs before joining the main stem near Eugene.
-
B.
Calapooia River
The Calapooia River is a tributary of the Willamette River in western Oregon, flowing through the Willamette Valley and contributing to the region’s agricultural and ecological landscape.
-
C.
Siuslaw River
The Siuslaw River is a coastal river in western Oregon that flows through the Coast Range to the Pacific Ocean, supporting rich salmon runs and the historic timber and fishing communities along its banks.
-
D.
Clackamas River
The Clackamas River is a tributary of the Willamette River in northwestern Oregon, known for its scenic forested watershed, hydroelectric dams, and popular recreational activities like fishing, rafting, and kayaking.
-
E.
Santiam River
The Santiam River is a major river in western Oregon that flows through the Cascade Range and Willamette Valley, supporting recreation, hydropower, and important salmon and steelhead runs.
- 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: Coast Fork Willamette River Target entity description: The Coast Fork Willamette River is a tributary of the Willamette River in western Oregon, flowing north through rural valleys and communities before joining the Middle Fork near Springfield.
-
A.
Middle Fork Willamette River
The Middle Fork Willamette River is a major tributary of Oregon’s Willamette River, flowing through forested mountain terrain and reservoirs before joining the main stem near Eugene.
-
B.
Calapooia River
The Calapooia River is a tributary of the Willamette River in western Oregon, flowing through the Willamette Valley and contributing to the region’s agricultural and ecological landscape.
-
C.
Siuslaw River
The Siuslaw River is a coastal river in western Oregon that flows through the Coast Range to the Pacific Ocean, supporting rich salmon runs and the historic timber and fishing communities along its banks.
-
D.
Clackamas River
The Clackamas River is a tributary of the Willamette River in northwestern Oregon, known for its scenic forested watershed, hydroelectric dams, and popular recreational activities like fishing, rafting, and kayaking.
-
E.
Santiam River
The Santiam River is a major river in western Oregon that flows through the Cascade Range and Willamette Valley, supporting recreation, hydropower, and important salmon and steelhead runs.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinLandUse |
agriculture
ⓘ
forestry ⓘ rural residential ⓘ |
| confluenceLocation | near Springfield, Oregon ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| ecoregion | temperate rainforest-influenced region of western Oregon ⓘ |
| flowsDirection | north ⓘ |
| flowsInto | Willamette River (via confluence with Middle Fork) NERFINISHED ⓘ |
| flowsThrough |
Cottage Grove, Oregon
NERFINISHED
ⓘ
Creswell, Oregon area NERFINISHED ⓘ rural valleys ⓘ |
| formsConfluenceWith | Middle Fork Willamette River NERFINISHED ⓘ |
| formsReservoir | Cottage Grove Lake NERFINISHED ⓘ |
| hasNearbyCity |
Eugene, Oregon
NERFINISHED
ⓘ
Springfield, Oregon NERFINISHED ⓘ |
| hasRecreation |
boating
ⓘ
fishing ⓘ swimming ⓘ wildlife viewing ⓘ |
| hasTributary |
Camas Swale Creek
NERFINISHED
ⓘ
Row River NERFINISHED ⓘ |
| impoundedBy | Cottage Grove Dam NERFINISHED ⓘ |
| locatedIn |
Douglas County, Oregon
NERFINISHED
ⓘ
Lane County, Oregon NERFINISHED ⓘ Oregon ⓘ western Oregon NERFINISHED ⓘ |
| managedBy | U.S. Army Corps of Engineers (for flood-control structures) NERFINISHED ⓘ |
| mouthLocation |
Springfield, Oregon area
NERFINISHED
ⓘ
confluence with Middle Fork Willamette River ⓘ |
| partOf |
Pacific Northwest river systems
ⓘ
Willamette River basin NERFINISHED ⓘ |
| region | Willamette Valley NERFINISHED ⓘ |
| sourceLocation |
Calapooya Mountains
NERFINISHED
ⓘ
southern Willamette Valley region ⓘ |
| tributaryOf | Willamette River NERFINISHED ⓘ |
| usedFor |
flood control
ⓘ
irrigation ⓘ recreation ⓘ |
| watercourseType | perennial stream ⓘ |
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: Coast Fork Willamette River Description of subject: The Coast Fork Willamette River is a tributary of the Willamette River in western Oregon, flowing north through rural valleys and communities before joining the Middle Fork near Springfield.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.