Gross Reservoir
E722491
Gross Reservoir is a large man-made lake in the foothills of the Rocky Mountains in Colorado, primarily used for water storage and outdoor recreation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Gross Reservoir canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8094909 — 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: Gross Reservoir Context triple: [Boulder County, Colorado, United States, contains, Gross Reservoir]
-
A.
Canistear Reservoir
Canistear Reservoir is a man-made lake in northern New Jersey that serves as a water supply and recreational area within the township of West Milford.
-
B.
Fengman Reservoir
Fengman Reservoir is a major artificial lake and hydroelectric reservoir on the upper Songhua River in Jilin Province, China, known for its role in power generation, flood control, and regional water supply.
-
C.
Kama Reservoir
Kama Reservoir is a large artificial lake in Russia formed by damming the Kama River, used primarily for hydroelectric power generation, navigation, and water regulation.
-
D.
Yellowtail Reservoir
Yellowtail Reservoir is a man-made lake on the Bighorn River in Montana, created by Yellowtail Dam and used primarily for water storage, hydroelectric power, and recreation.
-
E.
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.
- 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: Gross Reservoir Target entity description: Gross Reservoir is a large man-made lake in the foothills of the Rocky Mountains in Colorado, primarily used for water storage and outdoor recreation.
-
A.
Canistear Reservoir
Canistear Reservoir is a man-made lake in northern New Jersey that serves as a water supply and recreational area within the township of West Milford.
-
B.
Fengman Reservoir
Fengman Reservoir is a major artificial lake and hydroelectric reservoir on the upper Songhua River in Jilin Province, China, known for its role in power generation, flood control, and regional water supply.
-
C.
Kama Reservoir
Kama Reservoir is a large artificial lake in Russia formed by damming the Kama River, used primarily for hydroelectric power generation, navigation, and water regulation.
-
D.
Yellowtail Reservoir
Yellowtail Reservoir is a man-made lake on the Bighorn River in Montana, created by Yellowtail Dam and used primarily for water storage, hydroelectric power, and recreation.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionType | impoundment of South Boulder Creek ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createdBy | Gross Dam NERFINISHED ⓘ |
| environmentalConcern |
impacts on South Boulder Creek ecosystem
ⓘ
impacts on nearby forests and wildlife habitat ⓘ |
| expansionPurpose | increase water storage capacity for Denver Water ⓘ |
| function |
flow regulation of South Boulder Creek
ⓘ
water supply for Denver metropolitan area ⓘ |
| hasAccessVia |
Flagstaff Road
NERFINISHED
ⓘ
Gross Dam Road NERFINISHED ⓘ |
| hasActivity |
ice fishing (seasonal, subject to conditions)
ⓘ
non-motorized boating ⓘ |
| hasRegulation | no body contact with water ⓘ |
| hasScenicViewsOf | Rocky Mountains foothills NERFINISHED ⓘ |
| hasShorelineUseRestriction | no fires along most shoreline ⓘ |
| hasStructure | Gross Dam NERFINISHED ⓘ |
| inflow | South Boulder Creek NERFINISHED ⓘ |
| isPartOfWatershed | South Platte River basin NERFINISHED ⓘ |
| isSubjectOf | Gross Reservoir Expansion Project NERFINISHED ⓘ |
| locatedIn |
Boulder County, Colorado
NERFINISHED
ⓘ
foothills of the Rocky Mountains ⓘ |
| locatedSouthwestOf | Boulder, Colorado NERFINISHED ⓘ |
| locatedWestOf | Denver, Colorado NERFINISHED ⓘ |
| managedBy | Denver Water NERFINISHED ⓘ |
| namedAfter | Denver Water former chief engineer Dwight D. Gross NERFINISHED ⓘ |
| nearCity |
Boulder, Colorado
NERFINISHED
ⓘ
Denver, Colorado NERFINISHED ⓘ |
| operator | Denver Water NERFINISHED ⓘ |
| outflow | South Boulder Creek NERFINISHED ⓘ |
| partOf | Denver Water system NERFINISHED ⓘ |
| primaryUse | municipal water storage ⓘ |
| prohibits |
camping on most shorelines
ⓘ
swimming ⓘ |
| recreationAreaType | day-use area ⓘ |
| recreationManagedBy | Denver Water NERFINISHED ⓘ |
| region | Front Range NERFINISHED ⓘ |
| state | Colorado ⓘ |
| surfaceElevation | about 7,225 feet ⓘ |
| use |
boating
ⓘ
fishing ⓘ hiking ⓘ outdoor recreation ⓘ picnicking ⓘ |
| watercourse | South Boulder Creek 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: Gross Reservoir Description of subject: Gross Reservoir is a large man-made lake in the foothills of the Rocky Mountains in Colorado, primarily used for water storage and outdoor recreation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.