Fort Peck Dam
E449298
Fort Peck Dam is a massive earthfill dam in northeastern Montana that creates Fort Peck Lake and plays a key role in flood control, hydroelectric power generation, and water management in the Missouri River system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Fort Peck Dam canonical | 4 |
| Fort Peck Project | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4528890 — 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: Fort Peck Dam Context triple: [Missouri River Basin, hasMajorDam, Fort Peck Dam]
-
A.
Buffalo Bill Dam
Buffalo Bill Dam is a historic concrete arch-gravity dam on the Shoshone River in Wyoming, once one of the tallest in the world and now a key engineering landmark and visitor attraction.
-
B.
Gavins Point Dam
Gavins Point Dam is a major Missouri River dam near Yankton, South Dakota, known for hydroelectric power generation, flood control, and recreation on Lewis and Clark Lake.
-
C.
Minidoka Dam
Minidoka Dam is an early 20th-century Bureau of Reclamation irrigation and hydroelectric dam on the Snake River in southern Idaho.
-
D.
McNary Dam
McNary Dam is a large hydroelectric dam and navigation lock complex on the Columbia River in the Pacific Northwest of the United States.
-
E.
Dworshak Dam
Dworshak Dam is a large concrete gravity dam on the North Fork Clearwater River in Idaho, primarily used for hydroelectric power generation, flood control, and recreation.
- 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: Fort Peck Dam Target entity description: Fort Peck Dam is a massive earthfill dam in northeastern Montana that creates Fort Peck Lake and plays a key role in flood control, hydroelectric power generation, and water management in the Missouri River system.
-
A.
Buffalo Bill Dam
Buffalo Bill Dam is a historic concrete arch-gravity dam on the Shoshone River in Wyoming, once one of the tallest in the world and now a key engineering landmark and visitor attraction.
-
B.
Gavins Point Dam
Gavins Point Dam is a major Missouri River dam near Yankton, South Dakota, known for hydroelectric power generation, flood control, and recreation on Lewis and Clark Lake.
-
C.
Minidoka Dam
Minidoka Dam is an early 20th-century Bureau of Reclamation irrigation and hydroelectric dam on the Snake River in southern Idaho.
-
D.
McNary Dam
McNary Dam is a large hydroelectric dam and navigation lock complex on the Columbia River in the Pacific Northwest of the United States.
-
E.
Dworshak Dam
Dworshak Dam is a large concrete gravity dam on the North Fork Clearwater River in Idaho, primarily used for hydroelectric power generation, flood control, and recreation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
earthfill dam
ⓘ
hydroelectric dam ⓘ |
| authorizedBy | Rivers and Harbors Act of 1935 NERFINISHED ⓘ |
| constructionBeganUnder | Public Works Administration NERFINISHED ⓘ |
| constructionStartDate | 1933 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Fort Peck Lake NERFINISHED ⓘ |
| crosses | Missouri River NERFINISHED ⓘ |
| function | water management in the Missouri River system ⓘ |
| hasPowerPlant | Fort Peck Power Plant NERFINISHED ⓘ |
| height |
approximately 250 feet
ⓘ
approximately 76 meters ⓘ |
| length |
approximately 21,000 feet
ⓘ
approximately 6,400 meters ⓘ |
| listedAs | major dam on the Missouri River ⓘ |
| locatedIn |
Montana
NERFINISHED
ⓘ
northeastern Montana ⓘ |
| locatedInCounty |
McCone County, Montana
NERFINISHED
ⓘ
Valley County, Montana NERFINISHED ⓘ |
| locatedNear | Fort Peck, Montana NERFINISHED ⓘ |
| locatedOnRiver | Missouri River NERFINISHED ⓘ |
| managedBy | U.S. Army Corps of Engineers Omaha District NERFINISHED ⓘ |
| material |
earthfill
ⓘ
rolled earth and rockfill ⓘ |
| nearbyCity | Glasgow, Montana NERFINISHED ⓘ |
| notableFor | being one of the largest earthfill dams in the world at the time of its construction ⓘ |
| numberOfPowerhouses | 2 ⓘ |
| openingDate | 1940 ⓘ |
| operator | United States Army Corps of Engineers NERFINISHED ⓘ |
| partOf |
Missouri River Mainstem System
NERFINISHED
ⓘ
Pick–Sloan Missouri Basin Program NERFINISHED ⓘ |
| powerPlantType | hydroelectric power plant ⓘ |
| provides |
flood protection for downstream communities
ⓘ
hydroelectric power to the regional grid ⓘ navigation flow support on the Missouri River ⓘ recreational opportunities at Fort Peck Lake ⓘ storage for irrigation water ⓘ |
| purpose |
fish and wildlife conservation
ⓘ
flood control ⓘ hydroelectric power generation ⓘ irrigation water supply ⓘ navigation support ⓘ recreation ⓘ |
| regionServed | Missouri River Basin NERFINISHED ⓘ |
| reservoirCapacity | one of the largest man-made reservoirs in the United States by volume ⓘ |
| reservoirName | Fort Peck Lake NERFINISHED ⓘ |
| reservoirSurfaceArea | over 245,000 acres ⓘ |
| status | operational ⓘ |
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: Fort Peck Dam Description of subject: Fort Peck Dam is a massive earthfill dam in northeastern Montana that creates Fort Peck Lake and plays a key role in flood control, hydroelectric power generation, and water management in the Missouri River system.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Fort Peck Project