O’Sullivan Dam
E322932
O’Sullivan Dam is a major earth-fill dam in central Washington State that forms Potholes Reservoir and plays a key role in irrigation and water management for the Columbia Basin Project.
All labels observed (1)
| Label | Occurrences |
|---|---|
| O’Sullivan Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2884163 — 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: O’Sullivan Dam Context triple: [Columbia Basin Project, hasComponent, O’Sullivan Dam]
-
A.
Hume Dam
Hume Dam is a major concrete gravity dam in southeastern Australia that forms Lake Hume and plays a key role in water storage, irrigation, and flood control in the Murray–Darling Basin.
-
B.
Brownlee Dam
Brownlee Dam is a major hydroelectric dam on the Snake River in the western United States, forming Brownlee Reservoir and playing a key role in regional power generation and water management.
-
C.
Melton Hill Dam
Melton Hill Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in East Tennessee, forming Melton Hill Lake and providing power generation, recreation, and flood control for the Knoxville area.
-
D.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
-
E.
Norris Dam
Norris Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in eastern Tennessee, notable as TVA’s first major dam project and a key component of regional flood control and power generation.
- 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: O’Sullivan Dam Target entity description: O’Sullivan Dam is a major earth-fill dam in central Washington State that forms Potholes Reservoir and plays a key role in irrigation and water management for the Columbia Basin Project.
-
A.
Hume Dam
Hume Dam is a major concrete gravity dam in southeastern Australia that forms Lake Hume and plays a key role in water storage, irrigation, and flood control in the Murray–Darling Basin.
-
B.
Brownlee Dam
Brownlee Dam is a major hydroelectric dam on the Snake River in the western United States, forming Brownlee Reservoir and playing a key role in regional power generation and water management.
-
C.
Melton Hill Dam
Melton Hill Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in East Tennessee, forming Melton Hill Lake and providing power generation, recreation, and flood control for the Knoxville area.
-
D.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
-
E.
Norris Dam
Norris Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in eastern Tennessee, notable as TVA’s first major dam project and a key component of regional flood control and power generation.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
earth-fill dam
ⓘ
embankment dam ⓘ |
| associatedProtectedArea | Potholes State Park ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionBegan | 1947 ⓘ |
| constructionMaterial |
earth
ⓘ
rockfill ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designedFor | large-scale agricultural development of Columbia Basin ⓘ |
| engineeringProject |
Columbia Basin Project
ⓘ
surface form:
Columbia Basin Project main works
|
| feedsIrrigationDistrict |
Columbia Basin Project
ⓘ
surface form:
Columbia Basin irrigation areas
|
| formsReservoir | Potholes Reservoir ⓘ |
| function |
regulates flows to downstream irrigation canals
ⓘ
stores excess Columbia Basin Project water ⓘ |
| hasRecreationalActivities |
boating on Potholes Reservoir
ⓘ
fishing on Potholes Reservoir ⓘ waterfowl hunting in surrounding area ⓘ |
| hasSpillway | yes ⓘ |
| height | about 200 feet ⓘ |
| impact | supports irrigation for hundreds of thousands of acres of farmland ⓘ |
| length | about 19,000 feet ⓘ |
| locatedIn |
Washington
ⓘ
surface form:
Washington State
central Washington ⓘ |
| locatedInAdministrativeEntity | Grant County, Washington NERFINISHED ⓘ |
| locatedOnWaterbody | Potholes Reservoir ⓘ |
| managingAgency |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| namedAfter | local landowner or early settler with surname O’Sullivan ⓘ |
| nearbyCity |
Moses Lake, Washington
ⓘ
Othello, Washington ⓘ |
| opened | 1949 ⓘ |
| owner |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| partOf | Columbia Basin Project ⓘ |
| purpose |
flood control
ⓘ
irrigation ⓘ recreation support ⓘ water management ⓘ |
| regionServed |
Columbia Basin Project
ⓘ
surface form:
Columbia Basin Project irrigation area
|
| reservoirCapacity | approximately 1,000,000 acre-feet ⓘ |
| reservoirName | Potholes Reservoir ⓘ |
| reservoirUse |
irrigation water storage
ⓘ
recreation ⓘ |
| riverBasin | Columbia River Basin ⓘ |
| spillwayType | uncontrolled overflow spillway ⓘ |
| status | operational ⓘ |
| volume | on the order of tens of millions of cubic yards of earthfill ⓘ |
| waterSource |
Columbia Basin Project
ⓘ
surface form:
Columbia River via Columbia Basin Project canals
|
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: O’Sullivan Dam Description of subject: O’Sullivan Dam is a major earth-fill dam in central Washington State that forms Potholes Reservoir and plays a key role in irrigation and water management for the Columbia Basin Project.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.