Eufaula Dam
E254771
Eufaula Dam is a major flood-control and hydroelectric dam on the Arkansas River in Oklahoma that forms Lake Eufaula, one of the largest reservoirs in the United States.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Eufaula Dam canonical | 1 |
| Lake Eufaula Lock and Dam | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2265550 — 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: Eufaula Dam Context triple: [Arkansas River, hasDam, Eufaula Dam]
-
A.
Wheeler Dam
Wheeler Dam is a hydroelectric dam on the Tennessee River in northern Alabama that forms Wheeler Lake and helps provide power, navigation, and flood control in the region.
-
B.
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.
-
C.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
D.
La Grange Dam
La Grange Dam is a historic diversion dam on California’s Tuolumne River that supplies irrigation water to agricultural lands in the San Joaquin Valley.
-
E.
Guntersville Dam
Guntersville Dam is a Tennessee Valley Authority hydroelectric dam and navigation lock on the Tennessee River in northern Alabama.
- 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: Eufaula Dam Target entity description: Eufaula Dam is a major flood-control and hydroelectric dam on the Arkansas River in Oklahoma that forms Lake Eufaula, one of the largest reservoirs in the United States.
-
A.
Wheeler Dam
Wheeler Dam is a hydroelectric dam on the Tennessee River in northern Alabama that forms Wheeler Lake and helps provide power, navigation, and flood control in the region.
-
B.
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.
-
C.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
D.
La Grange Dam
La Grange Dam is a historic diversion dam on California’s Tuolumne River that supplies irrigation water to agricultural lands in the San Joaquin Valley.
-
E.
Guntersville Dam
Guntersville Dam is a Tennessee Valley Authority hydroelectric dam and navigation lock on the Tennessee River in northern Alabama.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
flood control structure ⓘ hydroelectric dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionBegan | 1956 ⓘ |
| constructionCost | about 121 million US dollars ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| damHeight | approximately 114 feet ⓘ |
| damLength | approximately 3,200 feet ⓘ |
| damType | earth-fill dam ⓘ |
| formsReservoir | Lake Eufaula ⓘ |
| hasPowerPlant | yes ⓘ |
| inflowRiver | Arkansas River ⓘ |
| isMajorReservoirCreator | yes ⓘ |
| locatedIn | Oklahoma ⓘ |
| locatedInCounty |
McIntosh County, Oklahoma
ⓘ
Pittsburg County, Oklahoma ⓘ |
| locatedNearCity | Eufaula, Oklahoma ⓘ |
| locatedOnRiver | Arkansas River ⓘ |
| managingAgency |
U.S. Army Corps of Engineers
ⓘ
surface form:
U.S. Army Corps of Engineers Tulsa District
|
| notableFor | creating one of the largest reservoirs in the United States by surface area ⓘ |
| openingDate | 1964 ⓘ |
| operator |
U.S. Army Corps of Engineers
ⓘ
surface form:
United States Army Corps of Engineers
|
| outflowRiver | Arkansas River ⓘ |
| partOfProject |
McClellan–Kerr Arkansas River Navigation System
ⓘ
surface form:
Arkansas River navigation and flood control system
|
| powerPlantCapacity | approximately 90 megawatts ⓘ |
| powerPlantTurbineType | hydroelectric turbine ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ navigation improvement ⓘ recreation ⓘ water supply ⓘ |
| region | eastern Oklahoma ⓘ |
| reservoirMaxCapacity | approximately 3,000,000 acre-feet ⓘ |
| reservoirName | Lake Eufaula ⓘ |
| reservoirShorelineLength | approximately 600 miles ⓘ |
| reservoirSurfaceArea | approximately 102,000 acres ⓘ |
| reservoirType | artificial lake ⓘ |
| riverSystem | Mississippi River basin ⓘ |
| spillwayType | gated spillway ⓘ |
| supportsActivity |
boating
ⓘ
camping ⓘ fishing ⓘ wildlife habitat management ⓘ |
| usedFor |
downstream flood risk reduction
ⓘ
peak power generation ⓘ supporting barge navigation on the Arkansas 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: Eufaula Dam Description of subject: Eufaula Dam is a major flood-control and hydroelectric dam on the Arkansas River in Oklahoma that forms Lake Eufaula, one of the largest reservoirs in the United States.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lake Eufaula Lock and Dam