Cherry Valley Dam
E544525
Cherry Valley Dam is a concrete arch dam in Tuolumne County, California, that creates Cherry Lake as part of the Hetch Hetchy water and hydroelectric system serving the San Francisco Bay Area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cherry Valley Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5754734 — 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: Cherry Valley Dam Context triple: [Cherry Creek (Tuolumne County, California), impoundedBy, Cherry Valley Dam]
-
A.
Kensico Dam
Kensico Dam is a massive early-20th-century masonry dam in Valhalla, New York, that forms the Kensico Reservoir and serves as a key component of New York City's water supply system.
-
B.
Rondout Dam
Rondout Dam is a major earthen dam in New York that impounds the Rondout Reservoir as part of the New York City water supply system.
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C.
Watertown Dam
Watertown Dam is a historic low-head dam on the Charles River in Watertown, Massachusetts, that once powered local industry and now helps regulate river flow and fish passage.
-
D.
Titicus Reservoir
Titicus Reservoir is a man-made lake in Westchester County, New York, that serves as one of the key water supply reservoirs for New York City.
-
E.
Holyoke Dam
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
- 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: Cherry Valley Dam Target entity description: Cherry Valley Dam is a concrete arch dam in Tuolumne County, California, that creates Cherry Lake as part of the Hetch Hetchy water and hydroelectric system serving the San Francisco Bay Area.
-
A.
Kensico Dam
Kensico Dam is a massive early-20th-century masonry dam in Valhalla, New York, that forms the Kensico Reservoir and serves as a key component of New York City's water supply system.
-
B.
Rondout Dam
Rondout Dam is a major earthen dam in New York that impounds the Rondout Reservoir as part of the New York City water supply system.
-
C.
Watertown Dam
Watertown Dam is a historic low-head dam on the Charles River in Watertown, Massachusetts, that once powered local industry and now helps regulate river flow and fish passage.
-
D.
Titicus Reservoir
Titicus Reservoir is a man-made lake in Westchester County, New York, that serves as one of the key water supply reservoirs for New York City.
-
E.
Holyoke Dam
Holyoke Dam is a historic hydroelectric dam on the Connecticut River in Holyoke, Massachusetts, known for powering the city’s early industrial development.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
concrete arch dam
ⓘ
dam ⓘ |
| completedIn | 1956 ⓘ |
| constructionBegan | 1953 ⓘ |
| constructionMaterial | concrete ⓘ |
| coordinates | 38.047°N 119.886°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Cherry Lake NERFINISHED ⓘ |
| damType | arch dam ⓘ |
| hasPowerPlant | Cherry hydroelectric facilities ⓘ |
| height |
315 feet
ⓘ
96 meters ⓘ |
| impounds | Cherry Creek NERFINISHED ⓘ |
| length |
244 meters
ⓘ
800 feet ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Stanislaus National Forest NERFINISHED ⓘ Tuolumne County, California NERFINISHED ⓘ |
| locatedNear | Yosemite National Park NERFINISHED ⓘ |
| locatedOn | Cherry Creek NERFINISHED ⓘ |
| openingYear | 1956 ⓘ |
| operator | San Francisco Public Utilities Commission NERFINISHED ⓘ |
| ownedBy | City and County of San Francisco NERFINISHED ⓘ |
| partOf |
Hetch Hetchy Project
NERFINISHED
ⓘ
Hetch Hetchy hydroelectric system NERFINISHED ⓘ Hetch Hetchy water system NERFINISHED ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ water storage ⓘ |
| reservoirCapacity | 273,500 acre-feet ⓘ |
| reservoirElevation |
1,433 meters
ⓘ
4,700 feet ⓘ |
| reservoirName | Cherry Lake NERFINISHED ⓘ |
| reservoirSurfaceArea | 1,500 acres ⓘ |
| riverBasin | Tuolumne River basin NERFINISHED ⓘ |
| serves | San Francisco Bay Area NERFINISHED ⓘ |
| spillwayType | overflow spillway ⓘ |
| usedFor |
municipal water supply
ⓘ
recreation at Cherry Lake ⓘ |
| watershed | Sierra Nevada NERFINISHED ⓘ |
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: Cherry Valley Dam Description of subject: Cherry Valley Dam is a concrete arch dam in Tuolumne County, California, that creates Cherry Lake as part of the Hetch Hetchy water and hydroelectric system serving the San Francisco Bay Area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Cherry Creek (Tuolumne County, California)