Mad River
E669568
Mad River is a waterway in northwestern California that flows through the ancestral lands of the Wiyot people before emptying into the Pacific Ocean.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mad River canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5368896 — 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: Mad River Context triple: [Wiyot people, traditionalTerritory, Mad River]
-
A.
Mad River
Mad River is a tributary of the Great Miami River in western Ohio known for its clear, cold waters and popularity for fishing and paddling.
-
B.
Mad River
Mad River is a tributary stream in New Hampshire that feeds into the Pemigewasset River within the Merrimack River watershed.
-
C.
Waters River
Waters River is a small waterway in Massachusetts that flows through the town of Danvers.
-
D.
Mad River (Vermont)
Mad River (Vermont) is a scenic mountain river in central Vermont known for its clear waters, popular trout fishing, and role in regional outdoor recreation.
-
E.
Contoocook River
The Contoocook River is a scenic river in southern New Hampshire known for its northward flow and popular recreational activities such as fishing, paddling, and whitewater boating.
- 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: Mad River Target entity description: Mad River is a waterway in northwestern California that flows through the ancestral lands of the Wiyot people before emptying into the Pacific Ocean.
-
A.
Mad River
Mad River is a tributary of the Great Miami River in western Ohio known for its clear, cold waters and popularity for fishing and paddling.
-
B.
Mad River
Mad River is a tributary stream in New Hampshire that feeds into the Pemigewasset River within the Merrimack River watershed.
-
C.
Waters River
Waters River is a small waterway in Massachusetts that flows through the town of Danvers.
-
D.
Mad River (Vermont)
Mad River (Vermont) is a scenic mountain river in central Vermont known for its clear waters, popular trout fishing, and role in regional outdoor recreation.
-
E.
Contoocook River
The Contoocook River is a scenic river in southern New Hampshire known for its northward flow and popular recreational activities such as fishing, paddling, and whitewater boating.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinSize | approximately 497 square miles ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crossedBy |
California State Route 299
NERFINISHED
ⓘ
U.S. Route 101 NERFINISHED ⓘ |
| emptiesInto | Pacific Ocean NERFINISHED ⓘ |
| flowsThrough |
Arcata, California
NERFINISHED
ⓘ
Blue Lake, California NERFINISHED ⓘ Humboldt County, California NERFINISHED ⓘ McKinleyville, California NERFINISHED ⓘ Trinity County, California NERFINISHED ⓘ |
| flowsThroughAncestralLandsOf | Wiyot people NERFINISHED ⓘ |
| hasIndigenousAssociation | Wiyot people NERFINISHED ⓘ |
| hasLandUseInWatershed |
forestry
ⓘ
ranching ⓘ rural residential development ⓘ |
| hasNearbyCity |
Arcata, California
NERFINISHED
ⓘ
Blue Lake, California NERFINISHED ⓘ |
| hasNearbyCommunity | McKinleyville, California NERFINISHED ⓘ |
| hasTributary |
Blue Lake Slough
NERFINISHED
ⓘ
Maple Creek NERFINISHED ⓘ North Fork Mad River NERFINISHED ⓘ South Fork Mad River NERFINISHED ⓘ |
| length | approximately 113 miles ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Humboldt County, California NERFINISHED ⓘ Trinity County, California NERFINISHED ⓘ northwestern California ⓘ |
| locatedInTraditionalTerritoryOf | Wiyot people NERFINISHED ⓘ |
| managedBy |
California Department of Fish and Wildlife
NERFINISHED
ⓘ
local water districts ⓘ |
| mouthLocatedIn |
Humboldt County, California
NERFINISHED
ⓘ
Pacific Ocean NERFINISHED ⓘ near McKinleyville, California ⓘ |
| partOf | California North Coast hydrologic region NERFINISHED ⓘ |
| region | North Coast of California NERFINISHED ⓘ |
| sourceElevation | about 2,900 feet ⓘ |
| sourceLocatedIn |
Coast Ranges
NERFINISHED
ⓘ
Trinity County, California NERFINISHED ⓘ |
| subjectTo |
habitat degradation concerns
ⓘ
sedimentation issues ⓘ |
| supportsSpecies |
Chinook salmon
NERFINISHED
ⓘ
coho salmon ⓘ steelhead trout ⓘ |
| usedFor |
boating
ⓘ
fishing ⓘ irrigation ⓘ municipal water supply ⓘ recreation ⓘ |
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: Mad River Description of subject: Mad River is a waterway in northwestern California that flows through the ancestral lands of the Wiyot people before emptying into the Pacific Ocean.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.