Chatfield Dam
E597968
Chatfield Dam is a large flood-control and water-storage structure in Colorado that creates Chatfield Reservoir on the South Platte River near Denver.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chatfield Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6248985 — 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: Chatfield Dam Context triple: [South Platte River, hasDam, Chatfield Dam]
-
A.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
-
B.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
C.
Howden Dam
Howden Dam is a large masonry dam in Derbyshire, England, forming part of the Upper Derwent Valley reservoir system and known for its impressive architecture and role in regional water supply.
-
D.
Merwin Dam
Merwin Dam is a hydroelectric dam on Washington State’s Lewis River that forms Lake Merwin and generates power for the region.
-
E.
Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
- 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: Chatfield Dam Target entity description: Chatfield Dam is a large flood-control and water-storage structure in Colorado that creates Chatfield Reservoir on the South Platte River near Denver.
-
A.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
-
B.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
C.
Howden Dam
Howden Dam is a large masonry dam in Derbyshire, England, forming part of the Upper Derwent Valley reservoir system and known for its impressive architecture and role in regional water supply.
-
D.
Merwin Dam
Merwin Dam is a hydroelectric dam on Washington State’s Lewis River that forms Lake Merwin and generates power for the region.
-
E.
Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
flood control structure ⓘ water storage structure ⓘ |
| associatedProtectedArea | Chatfield State Park NERFINISHED ⓘ |
| basin | South Platte River basin NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Chatfield Reservoir NERFINISHED ⓘ |
| hasUse |
flood mitigation
ⓘ
recreation ⓘ water supply ⓘ wildlife habitat support ⓘ |
| impounds | South Platte River NERFINISHED ⓘ |
| locatedIn | Colorado ⓘ |
| locatedInCounty |
Arapahoe County, Colorado
NERFINISHED
ⓘ
Douglas County, Colorado NERFINISHED ⓘ Jefferson County, Colorado NERFINISHED ⓘ |
| locatedNear | Denver NERFINISHED ⓘ |
| locatedOnRiver | South Platte River NERFINISHED ⓘ |
| managingAgency | United States Army Corps of Engineers NERFINISHED ⓘ |
| nearCity | Littleton, Colorado NERFINISHED ⓘ |
| partOfProject | South Platte River flood control system NERFINISHED ⓘ |
| primaryFunction | flood control ⓘ |
| purpose |
reduction of flood risk on the South Platte River
ⓘ
storage of municipal and industrial water supplies ⓘ |
| region | Front Range urban corridor NERFINISHED ⓘ |
| secondaryFunction | water storage ⓘ |
| state | Colorado ⓘ |
| supportsRecreationAt | Chatfield Reservoir NERFINISHED ⓘ |
| waterBodyFormed | Chatfield Reservoir 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: Chatfield Dam Description of subject: Chatfield Dam is a large flood-control and water-storage structure in Colorado that creates Chatfield Reservoir on the South Platte River near Denver.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.