Don Pedro Reservoir
E138313
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Don Pedro Reservoir canonical | 4 |
| New Don Pedro Reservoir | 1 |
| Stanislaus River Reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1109530 — 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: Don Pedro Reservoir Context triple: [Tuolumne River, formsReservoir, Don Pedro Reservoir]
-
A.
Crystal Springs Reservoir
Crystal Springs Reservoir is a large artificial lake system on the San Francisco Peninsula that serves as a major drinking water source and scenic open-space area for the region.
-
B.
Amawalk Reservoir
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
-
C.
Ice House Reservoir
Ice House Reservoir is a popular alpine lake in California’s Sierra Nevada known for camping, boating, and fishing within the Eldorado National Forest.
-
D.
San Luis Reservoir
San Luis Reservoir is a large artificial lake in California that serves as a major water storage facility for irrigation and municipal use in the state’s Central Valley.
-
E.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution 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: Don Pedro Reservoir Target entity description: Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
A.
Crystal Springs Reservoir
Crystal Springs Reservoir is a large artificial lake system on the San Francisco Peninsula that serves as a major drinking water source and scenic open-space area for the region.
-
B.
Amawalk Reservoir
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
-
C.
Ice House Reservoir
Ice House Reservoir is a popular alpine lake in California’s Sierra Nevada known for camping, boating, and fishing within the Eldorado National Forest.
-
D.
San Luis Reservoir
San Luis Reservoir is a large artificial lake in California that serves as a major water storage facility for irrigation and municipal use in the state’s Central Valley.
-
E.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
artificial lake
ⓘ
reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| catchmentArea |
Tuolumne River
ⓘ
surface form:
Tuolumne River watershed
|
| completionDate | 1971 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createdBy | New Don Pedro Dam ⓘ |
| damType | earth-and-rockfill dam ⓘ |
| hasFacility | Don Pedro Recreation Agency facilities ⓘ |
| hasInflow | Tuolumne River ⓘ |
| hasOutflow | Tuolumne River ⓘ |
| hasPowerPlant | Don Pedro Dam hydroelectric plant ⓘ |
| hasPurpose |
power generation
ⓘ
public recreation ⓘ water conservation ⓘ |
| isArtificial | true ⓘ |
| isUpstreamOf |
Modesto
ⓘ
surface form:
Modesto, California
Turlock ⓘ
surface form:
Turlock, California
|
| locatedIn |
California, United States
ⓘ
surface form:
California
Sierra Nevada foothills ⓘ Tuolumne County ⓘ
surface form:
Tuolumne County, California
|
| locatedInRegion |
San Joaquin River Basin
ⓘ
surface form:
California Central Valley watershed
Sierra Nevada ⓘ |
| locatedOnRiver | Tuolumne River ⓘ |
| managesWaterFor |
flood control
ⓘ
irrigation ⓘ municipal water supply ⓘ |
| maximumCapacity | about 2,030,000 acre-feet ⓘ |
| namedAfter | Don Pedro Dam ⓘ |
| nearCity |
La Grange, California
ⓘ
Sonora, California ⓘ |
| openingDate | 1971 ⓘ |
| operator |
Modesto Irrigation District
ⓘ
Turlock Irrigation District ⓘ |
| partOf |
Central Valley Project
ⓘ
surface form:
Central Valley Project service area (indirectly via local districts)
|
| primaryUse |
hydroelectric power generation
ⓘ
recreation ⓘ water storage ⓘ |
| recreationalActivity |
boating
ⓘ
camping ⓘ fishing ⓘ swimming ⓘ water skiing ⓘ |
| region | Sierra Nevada foothills ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| surfaceArea | about 13,000 acres ⓘ |
| usedBy |
Modesto Irrigation District
ⓘ
Turlock Irrigation District ⓘ |
| waterBodyType | freshwater lake ⓘ |
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: Don Pedro Reservoir Description of subject: Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Stanislaus River Reservoir
this entity surface form:
New Don Pedro Reservoir