Granby Dam
E551466
Granby Dam is a major earthfill dam in Colorado that forms Lake Granby, a key storage reservoir supplying water for irrigation, municipal use, and power generation in the region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Granby Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5525174 — 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: Granby Dam Context triple: [Colorado-Big Thompson Project, hasComponent, Granby Dam]
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
Hinckley Dam
Hinckley Dam is a large reservoir dam in upstate New York that impounds West Canada Creek to provide water supply, flood control, and recreation for the surrounding region.
-
C.
Lewiston Dam
Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
-
D.
Burn Mill Dam
Burn Mill Dam is a watercourse or controlled outflow channel associated with Kinghorn Loch in Fife, Scotland.
-
E.
Merwin Dam
Merwin Dam is a hydroelectric dam on Washington State’s Lewis River that forms Lake Merwin and generates power for the region.
- 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: Granby Dam Target entity description: Granby Dam is a major earthfill dam in Colorado that forms Lake Granby, a key storage reservoir supplying water for irrigation, municipal use, and power generation in the region.
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
Hinckley Dam
Hinckley Dam is a large reservoir dam in upstate New York that impounds West Canada Creek to provide water supply, flood control, and recreation for the surrounding region.
-
C.
Lewiston Dam
Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
-
D.
Burn Mill Dam
Burn Mill Dam is a watercourse or controlled outflow channel associated with Kinghorn Loch in Fife, Scotland.
-
E.
Merwin Dam
Merwin Dam is a hydroelectric dam on Washington State’s Lewis River that forms Lake Merwin and generates power for the region.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
earthfill dam
ⓘ
embankment dam ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| constructionBegan | 1941 ⓘ |
| constructionMaterial |
earthfill
ⓘ
rockfill ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| creates | Lake Granby ⓘ |
| crestElevation | about 8,280 feet above sea level ⓘ |
| elevationOfReservoir | about 8,280 feet at full pool ⓘ |
| formsReservoir | Lake Granby ⓘ |
| hasFeature |
crest roadway
ⓘ
outlet works for water diversion ⓘ |
| hasHydroelectricPlant | Granby Powerplant ⓘ |
| height | about 298 feet ⓘ |
| impounds | Colorado River ⓘ |
| length | about 861 feet ⓘ |
| locatedIn |
Colorado
ⓘ
Grand County, Colorado ⓘ |
| locatedInWatershed |
Upper Colorado River Basin
ⓘ
linked to:
Colorado River Basin
|
| managingAgency | U.S. Bureau of Reclamation Eastern Colorado Area Office ⓘ |
| near | Granby, Colorado ⓘ |
| openingDate | 1950 ⓘ |
| operator |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| owner |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| partOf | Colorado-Big Thompson Project ⓘ |
| powerPlantCapacity | about 3 megawatts ⓘ |
| project |
Colorado-Big Thompson transbasin diversion
ⓘ
linked to:
Colorado-Big Thompson Project
|
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation water storage ⓘ municipal water supply ⓘ |
| regionServed |
Northern Colorado
ⓘ
South Platte River Basin ⓘ
linked to:
South Platte River
|
| reservoirCapacity | about 539,800 acre-feet ⓘ |
| reservoirName | Lake Granby ⓘ |
| reservoirSurfaceArea | about 7,250 acres ⓘ |
| river | Colorado River ⓘ |
| spillwayCapacity | about 15,000 cubic feet per second ⓘ |
| spillwayType | uncontrolled overflow spillway ⓘ |
| suppliesWaterTo |
Front Range municipalities
ⓘ
linked to:
Front Range, Colorado
northern Colorado irrigation districts ⓘ |
| supportsUse |
boating on Lake Granby
ⓘ
fishing on Lake Granby ⓘ recreation on Lake Granby ⓘ |
| waterConveyance |
Adams Tunnel
ⓘ
Colorado-Big Thompson Project distribution system ⓘ |
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: Granby Dam Description of subject: Granby Dam is a major earthfill dam in Colorado that forms Lake Granby, a key storage reservoir supplying water for irrigation, municipal use, and power generation in the region.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.