Pardee Reservoir
E504220
Pardee Reservoir is a man-made lake in the Sierra Nevada foothills of California that serves as a major water storage and supply source for the East Bay region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pardee Reservoir canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4856395 — 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: Pardee Reservoir Context triple: [Mokelumne River area, contains, Pardee Reservoir]
-
A.
Palisade Reservoir
Palisade Reservoir is a man-made lake in central Utah used primarily for irrigation, recreation, and local water storage.
-
B.
Patterson Reservoir
Patterson Reservoir is a water storage facility in California that forms part of the State Water Project’s South Bay Aqueduct system.
-
C.
Cannonsville Reservoir
Cannonsville Reservoir is a major New York City water supply reservoir located in the western Catskill Mountains on the West Branch of the Delaware River.
-
D.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
E.
Marathon Reservoir
Marathon Reservoir is an artificial lake in Greece that serves as a major water supply source for the Athens metropolitan 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: Pardee Reservoir Target entity description: Pardee Reservoir is a man-made lake in the Sierra Nevada foothills of California that serves as a major water storage and supply source for the East Bay region.
-
A.
Palisade Reservoir
Palisade Reservoir is a man-made lake in central Utah used primarily for irrigation, recreation, and local water storage.
-
B.
Patterson Reservoir
Patterson Reservoir is a water storage facility in California that forms part of the State Water Project’s South Bay Aqueduct system.
-
C.
Cannonsville Reservoir
Cannonsville Reservoir is a major New York City water supply reservoir located in the western Catskill Mountains on the West Branch of the Delaware River.
-
D.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
E.
Marathon Reservoir
Marathon Reservoir is an artificial lake in Greece that serves as a major water supply source for the Athens metropolitan area.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| accessRestricted | true ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| catchmentArea | Mokelumne River watershed NERFINISHED ⓘ |
| constructionCompleted | 1929 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createdBy | Pardee Dam NERFINISHED ⓘ |
| damType | concrete arch dam ⓘ |
| elevation | approximately 190 meters above sea level ⓘ |
| hasDam | Pardee Dam NERFINISHED ⓘ |
| hasFunction |
drinking water supply
ⓘ
flood control ⓘ recreation ⓘ |
| hasShoreLength | tens of kilometers (approximate) ⓘ |
| isInEcosystem | Sierra Nevada foothill ecosystem ⓘ |
| isInHydrologicRegion | San Joaquin River hydrologic region NERFINISHED ⓘ |
| isMajorSourceOf | East Bay Municipal Utility District water supply ⓘ |
| isPartOf | California State water infrastructure ⓘ |
| isProtectedFor | drinking water quality ⓘ |
| isUpstreamOf | Camanche Reservoir NERFINISHED ⓘ |
| locatedEastOf | San Francisco Bay Area NERFINISHED ⓘ |
| locatedIn |
Amador County, California
NERFINISHED
ⓘ
Calaveras County, California NERFINISHED ⓘ Sierra Nevada foothills ⓘ Sierra Nevada, California NERFINISHED ⓘ |
| managedBy | East Bay Municipal Utility District NERFINISHED ⓘ |
| namedAfter | George C. Pardee NERFINISHED ⓘ |
| nearestCity | Valley Springs, California NERFINISHED ⓘ |
| operator | East Bay Municipal Utility District NERFINISHED ⓘ |
| partOf |
East Bay Municipal Utility District water system
NERFINISHED
ⓘ
Mokelumne River Project NERFINISHED ⓘ |
| primaryUse |
municipal water supply
ⓘ
water storage ⓘ |
| recreationalActivity |
boating
ⓘ
camping ⓘ fishing ⓘ |
| region | Northern California ⓘ |
| riverImpounded | Mokelumne River NERFINISHED ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| suppliesWaterTo |
Alameda County, California
NERFINISHED
ⓘ
Contra Costa County, California NERFINISHED ⓘ East Bay region of the San Francisco Bay Area NERFINISHED ⓘ |
| watercourse | Mokelumne River NERFINISHED ⓘ |
| waterQualityUse | treated as drinking water source ⓘ |
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: Pardee Reservoir Description of subject: Pardee Reservoir is a man-made lake in the Sierra Nevada foothills of California that serves as a major water storage and supply source for the East Bay region.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.