Middle Fork Eel River
E632569
The Middle Fork Eel River is a major, largely free-flowing tributary of Northern California’s Eel River, known for its remote canyon landscapes and important salmon and steelhead habitat.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Middle Fork Eel River canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6560514 — 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: Middle Fork Eel River Context triple: [Eel River Basin, hasTributary, Middle Fork Eel River]
-
A.
South Fork Eel River
The South Fork Eel River is a major tributary of Northern California’s Eel River, known for its scenic redwood-lined corridor and ecological importance for salmon and steelhead habitat.
-
B.
Mokelumne River
The Mokelumne River is a major river in the Sierra Nevada of California, known for its scenic canyons, hydroelectric projects, and role as a vital water source for agriculture and urban areas.
-
C.
Cle Elum River
The Cle Elum River is a tributary of the Yakima River in central Washington State, known for flowing through forested mountain terrain and supporting irrigation, recreation, and local ecosystems.
-
D.
Necanicum River
The Necanicum River is a coastal river in northwestern Oregon that flows through Clatsop County to the Pacific Ocean near the city of Seaside.
-
E.
Mattole River
The Mattole River is a remote, free-flowing river in Northern California’s Lost Coast region, known for its rugged watershed, salmon and steelhead habitat, and largely undeveloped surroundings.
- 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: Middle Fork Eel River Target entity description: The Middle Fork Eel River is a major, largely free-flowing tributary of Northern California’s Eel River, known for its remote canyon landscapes and important salmon and steelhead habitat.
-
A.
South Fork Eel River
The South Fork Eel River is a major tributary of Northern California’s Eel River, known for its scenic redwood-lined corridor and ecological importance for salmon and steelhead habitat.
-
B.
Mokelumne River
The Mokelumne River is a major river in the Sierra Nevada of California, known for its scenic canyons, hydroelectric projects, and role as a vital water source for agriculture and urban areas.
-
C.
Cle Elum River
The Cle Elum River is a tributary of the Yakima River in central Washington State, known for flowing through forested mountain terrain and supporting irrigation, recreation, and local ecosystems.
-
D.
Necanicum River
The Necanicum River is a coastal river in northwestern Oregon that flows through Clatsop County to the Pacific Ocean near the city of Seaside.
-
E.
Mattole River
The Mattole River is a remote, free-flowing river in Northern California’s Lost Coast region, known for its rugged watershed, salmon and steelhead habitat, and largely undeveloped surroundings.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinSize | approximately 745 square miles ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| flowsGenerally | southwest ⓘ |
| flowsThrough | remote canyon landscapes ⓘ |
| hasCharacteristic |
remote
ⓘ
rugged canyon ⓘ |
| hasHabitatType |
salmon habitat
ⓘ
steelhead trout habitat ⓘ |
| hasLandUse |
primarily undeveloped
ⓘ
timberlands in parts of the basin ⓘ |
| hasTributary |
Bald Creek
NERFINISHED
ⓘ
Black Butte River NERFINISHED ⓘ Buzzard Roost Creek NERFINISHED ⓘ Cherry Creek NERFINISHED ⓘ Elk Creek NERFINISHED ⓘ Hull Creek NERFINISHED ⓘ Indian Creek NERFINISHED ⓘ Maple Creek NERFINISHED ⓘ Mill Creek NERFINISHED ⓘ North Fork Middle Fork Eel River NERFINISHED ⓘ Oat Creek NERFINISHED ⓘ Rancheria Creek NERFINISHED ⓘ Rattlesnake Creek NERFINISHED ⓘ Salt Creek NERFINISHED ⓘ Short Creek NERFINISHED ⓘ Steelhead Creek NERFINISHED ⓘ Trout Creek NERFINISHED ⓘ Williams Creek NERFINISHED ⓘ Williams Valley Creek NERFINISHED ⓘ |
| isMostly | free-flowing ⓘ |
| length | approximately 70 miles ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Mendocino County, California NERFINISHED ⓘ Northern California ⓘ Trinity County, California NERFINISHED ⓘ |
| mouthElevation | about 900 feet ⓘ |
| mouthLocation |
Eel River
NERFINISHED
ⓘ
near Dos Rios, California ⓘ |
| partOf | Eel River watershed NERFINISHED ⓘ |
| protectedAreaStatus | partly within designated wilderness areas ⓘ |
| recreation |
backcountry hiking
ⓘ
fishing ⓘ whitewater boating ⓘ |
| riverSystem | Eel River NERFINISHED ⓘ |
| sourceElevation | approximately 4,000 feet ⓘ |
| sourceLocation |
Klamath Mountains
NERFINISHED
ⓘ
Trinity County, California NERFINISHED ⓘ Yolla Bolly Mountains NERFINISHED ⓘ |
| supportsSpecies |
Chinook salmon
ⓘ
coho salmon ⓘ steelhead trout ⓘ |
| tributaryOf | Eel 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: Middle Fork Eel River Description of subject: The Middle Fork Eel River is a major, largely free-flowing tributary of Northern California’s Eel River, known for its remote canyon landscapes and important salmon and steelhead habitat.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.