Mattole River mouth
E358959
The Mattole River mouth is the remote coastal area where the Mattole River empties into the Pacific Ocean along Northern California’s rugged Lost Coast.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mattole Beach trailhead | 1 |
| Mattole River mouth canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3446423 — 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: Mattole River mouth Context triple: [Lost Coast, hasPart, Mattole River mouth]
-
A.
Nestucca River
The Nestucca River is a coastal river in northwestern Oregon known for its scenic forested corridor, salmon and steelhead fisheries, and popular recreation opportunities such as fishing, kayaking, and camping.
-
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.
Siuslaw River estuary
The Siuslaw River estuary is a coastal estuarine system on the central Oregon coast where the Siuslaw River meets the Pacific Ocean, supporting rich tidal wetlands and diverse fish and wildlife habitats.
-
D.
Yaquina River estuary
The Yaquina River estuary is a coastal estuarine ecosystem on the central Oregon coast known for its rich tidal wetlands, diverse wildlife habitat, and importance to local fisheries and recreation.
-
E.
Marys River Kalapuya
Marys River Kalapuya were a Native American subgroup of the Kalapuya people who traditionally lived along the Marys River in the Willamette Valley of present-day Oregon.
- 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: Mattole River mouth Target entity description: The Mattole River mouth is the remote coastal area where the Mattole River empties into the Pacific Ocean along Northern California’s rugged Lost Coast.
-
A.
Nestucca River
The Nestucca River is a coastal river in northwestern Oregon known for its scenic forested corridor, salmon and steelhead fisheries, and popular recreation opportunities such as fishing, kayaking, and camping.
-
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.
Siuslaw River estuary
The Siuslaw River estuary is a coastal estuarine system on the central Oregon coast where the Siuslaw River meets the Pacific Ocean, supporting rich tidal wetlands and diverse fish and wildlife habitats.
-
D.
Yaquina River estuary
The Yaquina River estuary is a coastal estuarine ecosystem on the central Oregon coast known for its rich tidal wetlands, diverse wildlife habitat, and importance to local fisheries and recreation.
-
E.
Marys River Kalapuya
Marys River Kalapuya were a Native American subgroup of the Kalapuya people who traditionally lived along the Marys River in the Willamette Valley of present-day Oregon.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
geographic feature
ⓘ
river mouth ⓘ |
| adjacentTo | Mattole Beach ⓘ |
| climate | cool marine climate ⓘ |
| coastType | rugged coastline ⓘ |
| conservationStatus | relatively undeveloped ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| environment | remote coastal area ⓘ |
| hasAccessPointFor | Lost Coast Trail ⓘ |
| hasEcosystem |
coastal dune ecosystem
ⓘ
river estuary ecosystem ⓘ |
| hasFeature |
driftwood accumulation
ⓘ
river delta area ⓘ wide gravel and sand beach ⓘ |
| hasHabitatFor |
marine mammals
ⓘ
salmon ⓘ shorebirds ⓘ steelhead trout ⓘ |
| hasRecreationSite | Mattole Campground ⓘ |
| hasVegetation |
coastal scrub
ⓘ
dune plants ⓘ grasses ⓘ |
| hasViewOf | Pacific Ocean ⓘ |
| hydrologicFeature |
sandbar formation
ⓘ
tidal influence ⓘ |
| isRemote | true ⓘ |
| isRoadAccessible | limited ⓘ |
| locatedIn |
Humboldt County
ⓘ
surface form:
Humboldt County, California
Northern California ⓘ |
| locatedOn | Pacific Ocean ⓘ |
| managedWithin | King Range National Conservation Area ⓘ |
| mouthOf | Mattole River ⓘ |
| near | Petrolia, California ⓘ |
| partOf |
Lost Coast region
ⓘ
surface form:
Lost Coast
|
| state |
California, United States
ⓘ
surface form:
California
|
| subjectTo |
heavy winter storms
ⓘ
strong coastal winds ⓘ |
| usedFor |
backpacking
ⓘ
beachcombing ⓘ hiking ⓘ wildlife viewing ⓘ |
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: Mattole River mouth Description of subject: The Mattole River mouth is the remote coastal area where the Mattole River empties into the Pacific Ocean along Northern California’s rugged Lost Coast.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Lost Coast
this entity surface form:
Mattole Beach trailhead