Feather River near Marysville, California
E1020591
Feather River near Marysville, California is a section of the Feather River in Northern California that serves as the confluence point where the Yuba River joins it before the combined flow continues toward the Sacramento River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Feather River near Marysville, California canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13080909 — 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: Feather River near Marysville, California Context triple: [Yuba River, mouthLocation, Feather River near Marysville, California]
-
A.
Middle Fork Feather River
The Middle Fork Feather River is a major tributary of California’s Feather River system, flowing through the northern Sierra Nevada and contributing significant water and scenic canyon landscapes before reaching Lake Oroville.
-
B.
Feather River headwaters
The Feather River headwaters are the high-elevation source streams and wetlands in the mountains of Northern California that feed the Feather River, an important tributary of the Sacramento River and key component of the state’s water supply.
-
C.
South Fork Feather River
The South Fork Feather River is a major tributary of the Feather River in Northern California, flowing through the Sierra Nevada and contributing significantly to regional water storage and hydroelectric power.
-
D.
North Fork Feather River
The North Fork Feather River is a major tributary of California’s Feather River, flowing through the northern Sierra Nevada and supporting regional hydroelectric power, recreation, and wildlife habitat.
-
E.
West Branch Feather River
West Branch Feather River is a major tributary of California’s Feather River, flowing through the Sierra Nevada and contributing to the region’s water supply and hydroelectric system.
- 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: Feather River near Marysville, California Target entity description: Feather River near Marysville, California is a section of the Feather River in Northern California that serves as the confluence point where the Yuba River joins it before the combined flow continues toward the Sacramento River.
-
A.
Middle Fork Feather River
The Middle Fork Feather River is a major tributary of California’s Feather River system, flowing through the northern Sierra Nevada and contributing significant water and scenic canyon landscapes before reaching Lake Oroville.
-
B.
Feather River headwaters
The Feather River headwaters are the high-elevation source streams and wetlands in the mountains of Northern California that feed the Feather River, an important tributary of the Sacramento River and key component of the state’s water supply.
-
C.
South Fork Feather River
The South Fork Feather River is a major tributary of the Feather River in Northern California, flowing through the Sierra Nevada and contributing significantly to regional water storage and hydroelectric power.
-
D.
North Fork Feather River
The North Fork Feather River is a major tributary of California’s Feather River, flowing through the northern Sierra Nevada and supporting regional hydroelectric power, recreation, and wildlife habitat.
-
E.
West Branch Feather River
West Branch Feather River is a major tributary of California’s Feather River, flowing through the Sierra Nevada and contributing to the region’s water supply and hydroelectric system.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
geographic feature
ⓘ
river reach ⓘ |
| downstreamFlowsTo | Sacramento River NERFINISHED ⓘ |
| ecoregion | Central Valley riparian habitat ⓘ |
| flowsThrough | Marysville, California vicinity NERFINISHED ⓘ |
| hasConfluenceWith | Yuba River NERFINISHED ⓘ |
| hasFloodRisk | levee-protected floodplain ⓘ |
| hasNearbyInfrastructure |
bridges at Marysville–Yuba City area
ⓘ
levee system ⓘ |
| hasWatercourseType | alluvial river ⓘ |
| hydrologicUnitOf | Sacramento River Basin NERFINISHED ⓘ |
| isNear |
Yuba City, California
NERFINISHED
ⓘ
confluence of Yuba River and Feather River ⓘ |
| isPartOf | California State Water Project service area NERFINISHED ⓘ |
| isUpstreamOf | Feather River–Sacramento River confluence NERFINISHED ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Marysville, California NERFINISHED ⓘ Northern California ⓘ United States of America ⓘ
surface form:
United States
Yuba County, California NERFINISHED ⓘ |
| monitoredBy | United States Geological Survey NERFINISHED ⓘ |
| partOf |
Feather River
NERFINISHED
ⓘ
Sacramento Valley NERFINISHED ⓘ |
| receivesInflowFrom |
Yuba River
NERFINISHED
ⓘ
upstream Feather River ⓘ |
| usedFor |
boating
ⓘ
flood control system ⓘ irrigation water supply ⓘ recreational fishing ⓘ |
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: Feather River near Marysville, California Description of subject: Feather River near Marysville, California is a section of the Feather River in Northern California that serves as the confluence point where the Yuba River joins it before the combined flow continues toward the Sacramento River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.