Roosevelt Dam
E171706
Roosevelt Dam is a historic masonry and concrete arch dam on Arizona’s Salt River, built in the early 20th century to provide water storage, flood control, and hydroelectric power for the region.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Roosevelt Dam canonical | 2 |
| Theodore Roosevelt Dam | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1258921 — 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: Roosevelt Dam Context triple: [Bureau of Reclamation, hasDams, Roosevelt Dam]
-
A.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
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B.
Folsom Dam
Folsom Dam is a large concrete dam on the American River in California that provides flood control, water storage, and hydroelectric power for the Sacramento region.
-
C.
Hollywood Dam
Hollywood Dam is a concrete arch-gravity dam in the Hollywood Hills of Los Angeles that impounds the Hollywood Reservoir as part of the city’s water supply system.
-
D.
Davis Dam
Davis Dam is a concrete gravity-arch dam on the Colorado River between Nevada and Arizona that forms Lake Mohave and helps regulate water releases from Hoover Dam.
-
E.
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.
- 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: Roosevelt Dam Target entity description: Roosevelt Dam is a historic masonry and concrete arch dam on Arizona’s Salt River, built in the early 20th century to provide water storage, flood control, and hydroelectric power for the region.
-
A.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
B.
Folsom Dam
Folsom Dam is a large concrete dam on the American River in California that provides flood control, water storage, and hydroelectric power for the Sacramento region.
-
C.
Hollywood Dam
Hollywood Dam is a concrete arch-gravity dam in the Hollywood Hills of Los Angeles that impounds the Hollywood Reservoir as part of the city’s water supply system.
-
D.
Davis Dam
Davis Dam is a concrete gravity-arch dam on the Colorado River between Nevada and Arizona that forms Lake Mohave and helps regulate water releases from Hoover Dam.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
arch dam
ⓘ
concrete dam ⓘ gravity arch dam ⓘ historic place ⓘ masonry dam ⓘ |
| alsoKnownAs |
Roosevelt Dam
ⓘ
surface form:
Theodore Roosevelt Dam
|
| associatedWithProject |
Salt River Project
ⓘ
surface form:
Salt River irrigation project
|
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| completionDate | 1911 ⓘ |
| constructionEra | early 20th century ⓘ |
| constructionStartDate | 1905 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designedBy |
Bureau of Reclamation
ⓘ
surface form:
U.S. Reclamation Service engineers
|
| function | regulation of Salt River flows ⓘ |
| hasHydroelectricPlant | yes ⓘ |
| height |
approximately 280 feet (original)
ⓘ
approximately 357 feet (after modification) ⓘ |
| historicSignificance | first major reclamation project dam in Arizona ⓘ |
| impounds | Theodore Roosevelt Lake NERFINISHED ⓘ |
| length | approximately 1,210 feet ⓘ |
| listedOn | National Register of Historic Places ⓘ |
| locatedIn |
Arizona
ⓘ
Gila County, Arizona ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOnWatercourse | Salt River ⓘ |
| managingAgency |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| materialUsed |
concrete
ⓘ
masonry ⓘ |
| modification | raised and reconstructed in the 1980s–1990s ⓘ |
| namedAfter | Theodore Roosevelt ⓘ |
| nearbyCity | Roosevelt, Arizona ⓘ |
| NRHPType | National Historic Landmark ⓘ |
| openingDate | 1911 ⓘ |
| operator | Salt River Project ⓘ |
| owner |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| partOf |
Salt River Project
ⓘ
U.S. Bureau of Reclamation projects ⓘ |
| powerGenerationType | hydroelectric ⓘ |
| providesWaterTo |
Phoenix metropolitan area
ⓘ
Salt River ⓘ
surface form:
Salt River Valley
|
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ water storage ⓘ |
| regionServed | central Arizona ⓘ |
| reservoirName | Theodore Roosevelt Lake NERFINISHED ⓘ |
| riverSystem |
Gila River
ⓘ
surface form:
Gila River basin
|
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: Roosevelt Dam Description of subject: Roosevelt Dam is a historic masonry and concrete arch dam on Arizona’s Salt River, built in the early 20th century to provide water storage, flood control, and hydroelectric power for the region.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Theodore Roosevelt Dam
this entity surface form:
Theodore Roosevelt Dam