Sweetwater Reservoir
E699073
Sweetwater Reservoir is a man-made lake in San Diego County, California, that serves as a key water supply and recreational area for the surrounding communities.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sweetwater Reservoir canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T7798917 — 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: Sweetwater Reservoir Context triple: [State Route 125, passesNear, Sweetwater Reservoir]
-
A.
La Mesa Reservoir
La Mesa Reservoir is a major water storage facility in the Philippines that supplies potable water to Metro Manila and is located within the protected La Mesa Watershed.
-
B.
Stillwater Reservoir
Stillwater Reservoir is a large, remote man-made lake in the western Adirondack Mountains of New York, popular for boating, fishing, and backcountry recreation.
-
C.
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.
-
D.
Camanche Reservoir
Camanche Reservoir is a man-made lake in California used for water storage, flood control, recreation, and wildlife habitat along the Mokelumne River.
-
E.
Hills Creek Reservoir
Hills Creek Reservoir is a man-made lake in Oregon’s Cascade Range, popular for fishing, boating, and camping within the Willamette National Forest.
- 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: Sweetwater Reservoir Target entity description: Sweetwater Reservoir is a man-made lake in San Diego County, California, that serves as a key water supply and recreational area for the surrounding communities.
-
A.
La Mesa Reservoir
La Mesa Reservoir is a major water storage facility in the Philippines that supplies potable water to Metro Manila and is located within the protected La Mesa Watershed.
-
B.
Stillwater Reservoir
Stillwater Reservoir is a large, remote man-made lake in the western Adirondack Mountains of New York, popular for boating, fishing, and backcountry recreation.
-
C.
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.
-
D.
Camanche Reservoir
Camanche Reservoir is a man-made lake in California used for water storage, flood control, recreation, and wildlife habitat along the Mokelumne River.
-
E.
Hills Creek Reservoir
Hills Creek Reservoir is a man-made lake in Oregon’s Cascade Range, popular for fishing, boating, and camping within the Willamette National Forest.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| country |
United States
ⓘ
linked to:
United States of America
|
| createdBy | Sweetwater Dam ⓘ |
| hasCatchment |
Sweetwater River basin
ⓘ
linked to:
Sweetwater River Basin region
|
| hasEnvironmentalRole |
aquatic habitat
ⓘ
flood control support ⓘ |
| hasFeature |
access roads
ⓘ
shoreline recreation areas ⓘ water level control structures ⓘ |
| hasFunction | storage of treated and untreated water ⓘ |
| hasRecreationManagement | regulated public access ⓘ |
| hasSafetyConcern |
drowning risk
ⓘ
variable water levels ⓘ |
| hasType | surface water reservoir ⓘ |
| hasUseRestriction | subject to local water authority regulations ⓘ |
| isAccessibleFrom | local roads in San Diego County ⓘ |
| isArtificial | true ⓘ |
| isImpoundedBy | Sweetwater Dam ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
San Diego County, California ⓘ
linked to:
San Diego County
Sweetwater River watershed ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| locatedNear |
Bonita, California
ⓘ
Chula Vista, California ⓘ
linked to:
Chula Vista
National City, California ⓘ |
| manages | drinking water storage ⓘ |
| operatedBy | local water authority ⓘ |
| ownedBy | local water authority ⓘ |
| partOf | regional water supply system of San Diego County ⓘ |
| primaryInflow | Sweetwater River ⓘ |
| primaryOutflow | Sweetwater River ⓘ |
| purpose |
municipal water supply
ⓘ
recreation ⓘ |
| serves | surrounding communities in San Diego County ⓘ |
| subjectTo |
California water quality regulations
ⓘ
local environmental protection policies ⓘ |
| usedFor |
boating
ⓘ
fishing ⓘ outdoor recreation ⓘ |
| watercourse | Sweetwater River ⓘ |
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: Sweetwater Reservoir Description of subject: Sweetwater Reservoir is a man-made lake in San Diego County, California, that serves as a key water supply and recreational area for the surrounding communities.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.