American River watershed
E358009
The American River watershed is a major river basin in Northern California that drains the western slopes of the Sierra Nevada and supplies water, recreation, and habitat to the Sacramento region.
All labels observed (3)
| Label | Occurrences |
|---|---|
| American River watershed canonical | 8 |
| American River basin | 1 |
| American River region | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3424316 — 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: American River watershed Context triple: [Colfax, California, locatedNear, American River watershed]
-
A.
San Joaquin River Basin
The San Joaquin River Basin is a major watershed in California’s Central Valley that drains the San Joaquin River and its tributaries, supporting extensive agriculture, ecosystems, and communities.
-
B.
Sacramento River Basin
The Sacramento River Basin is a major watershed in Northern California that drains the Sacramento River and its tributaries, supporting extensive agriculture, ecosystems, and water supply for the region.
-
C.
Trinity River Basin
The Trinity River Basin is a major watershed in northwestern California that drains the Trinity River and its tributaries, supporting regional water supply, ecosystems, and recreation.
-
D.
Santa Clara River watershed
The Santa Clara River watershed is a major river basin in Southern California that drains diverse mountain and valley landscapes before emptying into the Pacific Ocean near Ventura.
-
E.
Kaweah River watershed
The Kaweah River watershed is a mountainous drainage basin in California’s southern Sierra Nevada that channels snowmelt and rainfall through steep canyons and forests before flowing into the San Joaquin Valley.
- 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: American River watershed Target entity description: The American River watershed is a major river basin in Northern California that drains the western slopes of the Sierra Nevada and supplies water, recreation, and habitat to the Sacramento region.
-
A.
San Joaquin River Basin
The San Joaquin River Basin is a major watershed in California’s Central Valley that drains the San Joaquin River and its tributaries, supporting extensive agriculture, ecosystems, and communities.
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B.
Sacramento River Basin
The Sacramento River Basin is a major watershed in Northern California that drains the Sacramento River and its tributaries, supporting extensive agriculture, ecosystems, and water supply for the region.
-
C.
Trinity River Basin
The Trinity River Basin is a major watershed in northwestern California that drains the Trinity River and its tributaries, supporting regional water supply, ecosystems, and recreation.
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D.
Santa Clara River watershed
The Santa Clara River watershed is a major river basin in Southern California that drains diverse mountain and valley landscapes before emptying into the Pacific Ocean near Ventura.
-
E.
Kaweah River watershed
The Kaweah River watershed is a mountainous drainage basin in California’s southern Sierra Nevada that channels snowmelt and rainfall through steep canyons and forests before flowing into the San Joaquin Valley.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
drainage basin
ⓘ
river basin ⓘ watershed ⓘ |
| contains |
American River Parkway
ⓘ
Auburn State Recreation Area ⓘ Folsom Dam ⓘ Folsom Lake ⓘ Lake Natoma ⓘ Middle Fork American River ⓘ Nimbus Dam ⓘ North Fork American River ⓘ South Fork American River ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| drains | western slopes of the Sierra Nevada ⓘ |
| ecoregion |
Central Valley
ⓘ
Sierra Nevada ⓘ |
| hasLandUse |
agricultural lands
ⓘ
forests ⓘ rangelands ⓘ urban areas ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Northern California ⓘ Sacramento River Basin ⓘ
surface form:
Sacramento River basin
|
| majorCityInWatershed |
Folsom
ⓘ
surface form:
Folsom, California
Rancho Cordova ⓘ
surface form:
Rancho Cordova, California
Sacramento ⓘ
surface form:
Sacramento, California
|
| managedBy |
California Department of Water Resources
ⓘ
Sacramento Area Flood Control Agency ⓘ Bureau of Reclamation ⓘ
surface form:
U.S. Bureau of Reclamation
|
| mouthLocation |
Sacramento River
ⓘ
surface form:
Sacramento River at Sacramento, California
|
| primaryRiver | American River ⓘ |
| provides |
fish habitat
ⓘ
municipal water supply ⓘ recreation ⓘ wildlife habitat ⓘ |
| servesRegion | Sacramento metropolitan area ⓘ |
| subjectTo |
drought impacts
ⓘ
flood risk ⓘ seasonal snowmelt runoff ⓘ |
| supportsSpecies |
Chinook salmon
ⓘ
steelhead trout ⓘ |
| tributaryOf | Sacramento River ⓘ |
| usedFor |
boating
ⓘ
drinking water supply ⓘ fishing ⓘ flood control ⓘ hydropower generation ⓘ irrigation ⓘ whitewater recreation ⓘ 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: American River watershed Description of subject: The American River watershed is a major river basin in Northern California that drains the western slopes of the Sierra Nevada and supplies water, recreation, and habitat to the Sacramento region.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
American River region
this entity surface form:
American River basin