Eel River Basin
E152570
The Eel River Basin is a major watershed in northwestern California known for its rugged terrain, high sediment loads, and ecologically important river system draining to the Pacific Ocean.
All labels observed (9)
| Label | Occurrences |
|---|---|
| Eel River | 14 |
| Eel River Valley | 3 |
| Eel River Basin canonical | 1 |
| Eel River area | 1 |
| Eel River basin | 1 |
| Eel River floodplain | 1 |
| Eel River valley | 1 |
| South Fork Eel River | 1 |
| South Fork Eel River corridor | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T545408 — 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: Eel River Basin Context triple: [Cape Mendocino, near, Eel River Basin]
-
A.
Carson River
The Carson River is a significant river in the western United States that flows through eastern California and western Nevada, playing a key role in the region’s ecology, agriculture, and water supply.
-
B.
Yaquina River
The Yaquina River is a coastal river in western Oregon that flows through forested valleys before emptying into the Pacific Ocean at Yaquina Bay near Newport.
-
C.
Klamath River
The Klamath River is a major river in southern Oregon and northern California known for its salmon runs, ecological significance, and ongoing water and dam-removal controversies.
-
D.
Owens River
The Owens River is a river in eastern California that flows through the Owens Valley along the eastern Sierra Nevada and has been central to the region’s water supply and environmental history.
-
E.
Tuolumne River
The Tuolumne River is a major Sierra Nevada waterway in California known for its scenic alpine meadows, deep granite canyons, and popular whitewater rafting and fishing opportunities.
- 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: Eel River Basin Target entity description: The Eel River Basin is a major watershed in northwestern California known for its rugged terrain, high sediment loads, and ecologically important river system draining to the Pacific Ocean.
-
A.
Carson River
The Carson River is a significant river in the western United States that flows through eastern California and western Nevada, playing a key role in the region’s ecology, agriculture, and water supply.
-
B.
Yaquina River
The Yaquina River is a coastal river in western Oregon that flows through forested valleys before emptying into the Pacific Ocean at Yaquina Bay near Newport.
-
C.
Klamath River
The Klamath River is a major river in southern Oregon and northern California known for its salmon runs, ecological significance, and ongoing water and dam-removal controversies.
-
D.
Owens River
The Owens River is a river in eastern California that flows through the Owens Valley along the eastern Sierra Nevada and has been central to the region’s water supply and environmental history.
-
E.
Tuolumne River
The Tuolumne River is a major Sierra Nevada waterway in California known for its scenic alpine meadows, deep granite canyons, and popular whitewater rafting and fishing opportunities.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
drainage basin
ⓘ
river basin ⓘ watershed ⓘ |
| borderedBy | Pacific Ocean coast of northern California ⓘ |
| climate | Mediterranean climate ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| drainsInto | Pacific Ocean ⓘ |
| geology | Franciscan Complex ⓘ |
| hasCharacteristic |
ecologically important river system
ⓘ
high sediment loads ⓘ rugged terrain ⓘ |
| hasConservationConcern |
protection of anadromous fish runs
ⓘ
water quality impairment from sediment ⓘ |
| hasEcosystemType |
anadromous fish habitat
ⓘ
riparian habitat ⓘ temperate rainforest ⓘ |
| hasHydrologicFeature |
Eel River estuary
ⓘ
floodplain wetlands ⓘ |
| hasIssue |
flooding
ⓘ
habitat degradation ⓘ sedimentation ⓘ |
| hasLandUse |
forestry
ⓘ
ranching ⓘ rural residential development ⓘ |
| hasMainRiver |
Eel River Basin
self-linksurface differs
ⓘ
surface form:
Eel River
|
| hasManagementAuthority |
California State Water Resources Control Board
ⓘ
North Coast Regional Water Quality Control Board ⓘ |
| hasPrecipitationPattern | winter-dominated rainfall ⓘ |
| hasTributary |
Mattole River
ⓘ
Middle Fork Eel River ⓘ North Fork Eel River ⓘ South Fork Eel River ⓘ Van Duzen River ⓘ |
| isKnownFor | high sediment yield relative to discharge ⓘ |
| isPartOf |
North Coast of California
ⓘ
surface form:
California North Coast hydrologic region
|
| locatedIn |
Glenn County
ⓘ
surface form:
Glenn County, California
Humboldt County ⓘ
surface form:
Humboldt County, California
Lake County, California ⓘ Mendocino County ⓘ
surface form:
Mendocino County, California
Tehama County ⓘ
surface form:
Tehama County, California
Trinity Alps ⓘ
surface form:
Trinity Alps region
Trinity County, California ⓘ North Coast of California ⓘ
surface form:
northwestern California
|
| namedAfter |
Eel River Basin
self-linksurface differs
ⓘ
surface form:
Eel River
|
| partOf | Northern California Coast Ranges ⓘ |
| supportsSpecies |
Chinook salmon
ⓘ
coho salmon ⓘ steelhead trout ⓘ |
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: Eel River Basin Description of subject: The Eel River Basin is a major watershed in northwestern California known for its rugged terrain, high sediment loads, and ecologically important river system draining to the Pacific Ocean.
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
South Fork Eel River
this entity surface form:
South Fork Eel River corridor
this entity surface form:
Eel River Valley
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River floodplain
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River Valley
this entity surface form:
Eel River
this entity surface form:
Eel River
this entity surface form:
Eel River area
this entity surface form:
Eel River
this entity surface form:
Eel River Valley
this entity surface form:
Eel River
this entity surface form:
Eel River basin
this entity surface form:
Eel River valley