Central Valley watershed system
E883009
The Central Valley watershed system is a vast, interconnected network of rivers, tributaries, and drainage basins in California that channels water from surrounding mountains through the agriculturally rich Central Valley.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Central Valley watershed | 1 |
| Central Valley watershed system canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10656629 — 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: Central Valley watershed system Context triple: [San Joaquin River Basin, partOf, Central Valley watershed system]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
American River watershed
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.
-
E.
San Francisco River basin
The San Francisco River basin is a watershed in Bogotá that drains the slopes of the Eastern Hills and channels water through part of the city’s urban area.
- 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: Central Valley watershed system Target entity description: The Central Valley watershed system is a vast, interconnected network of rivers, tributaries, and drainage basins in California that channels water from surrounding mountains through the agriculturally rich Central Valley.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
American River watershed
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.
-
E.
San Francisco River basin
The San Francisco River basin is a watershed in Bogotá that drains the slopes of the Eastern Hills and channels water through part of the city’s urban area.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
hydrological system
ⓘ
watershed system ⓘ |
| associatedWith |
Central Valley Project
NERFINISHED
ⓘ
State Water Project NERFINISHED ⓘ |
| containsInfrastructure |
canals
ⓘ
dams ⓘ levees ⓘ pumping plants ⓘ reservoirs ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| drainageBasinOf |
Kings River
NERFINISHED
ⓘ
Sacramento River NERFINISHED ⓘ San Joaquin River NERFINISHED ⓘ Tulare Lake basin NERFINISHED ⓘ |
| drains |
Central Valley
NERFINISHED
ⓘ
interior of California ⓘ |
| ecologicalRole |
supports migratory bird habitat
ⓘ
supports riparian ecosystems ⓘ |
| ecoregion | California Central Valley grasslands ⓘ |
| flowsInto |
Pacific Ocean
NERFINISHED
ⓘ
San Francisco Bay NERFINISHED ⓘ |
| hasPart |
American River watershed
NERFINISHED
ⓘ
Feather River watershed NERFINISHED ⓘ Kaweah River watershed NERFINISHED ⓘ Kern River watershed NERFINISHED ⓘ Kings River NERFINISHED ⓘ Kings River watershed NERFINISHED ⓘ Merced River watershed NERFINISHED ⓘ Sacramento River watershed NERFINISHED ⓘ San Joaquin River watershed NERFINISHED ⓘ Stanislaus River watershed NERFINISHED ⓘ Tulare Lake watershed NERFINISHED ⓘ Tuolumne River watershed NERFINISHED ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Central Valley NERFINISHED ⓘ |
| managedBy |
California Department of Water Resources
NERFINISHED
ⓘ
U.S. Bureau of Reclamation NERFINISHED ⓘ |
| mouth | Sacramento–San Joaquin River Delta NERFINISHED ⓘ |
| primaryUse |
industrial water supply
ⓘ
irrigation ⓘ municipal water supply ⓘ |
| sourceRegion |
Cascade Range
NERFINISHED
ⓘ
Coast Ranges NERFINISHED ⓘ Sierra Nevada NERFINISHED ⓘ |
| supports | Central Valley agriculture ⓘ |
| threat |
agricultural runoff
ⓘ
climate change impacts ⓘ groundwater overdraft ⓘ habitat loss ⓘ |
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: Central Valley watershed system Description of subject: The Central Valley watershed system is a vast, interconnected network of rivers, tributaries, and drainage basins in California that channels water from surrounding mountains through the agriculturally rich Central Valley.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Central Valley watershed