Mansfield Dam
E699048
Mansfield Dam is a large concrete dam on the Colorado River in central Texas, built for flood control, water supply, and hydroelectric power generation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mansfield Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7844571 — 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: Mansfield Dam Context triple: [Lake Travis, createdBy, Mansfield 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.
O’Sullivan Dam
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.
-
C.
Moondarra Dam
Moondarra Dam is a major water storage and irrigation structure in Queensland, Australia, built to supply water to the nearby city of Mount Isa and its mining operations.
-
D.
Roxburgh Dam
Roxburgh Dam is a major hydroelectric power station in New Zealand’s South Island, known for harnessing the Clutha River / Mata-Au to generate electricity.
-
E.
Tulloch Dam
Tulloch Dam is a concrete gravity dam on the Stanislaus River in California that forms Tulloch Reservoir for irrigation, hydroelectric power generation, 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: Mansfield Dam Target entity description: Mansfield Dam is a large concrete dam on the Colorado River in central Texas, built for flood control, water supply, and hydroelectric power generation.
-
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.
O’Sullivan Dam
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.
-
C.
Moondarra Dam
Moondarra Dam is a major water storage and irrigation structure in Queensland, Australia, built to supply water to the nearby city of Mount Isa and its mining operations.
-
D.
Roxburgh Dam
Roxburgh Dam is a major hydroelectric power station in New Zealand’s South Island, known for harnessing the Clutha River / Mata-Au to generate electricity.
-
E.
Tulloch Dam
Tulloch Dam is a concrete gravity dam on the Stanislaus River in California that forms Tulloch Reservoir for irrigation, hydroelectric power generation, and recreation.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
arch-gravity dam
ⓘ
concrete dam ⓘ hydroelectric dam ⓘ |
| alsoKnownAs | Marshall Ford Dam (original name) NERFINISHED ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionFunding | Public Works Administration NERFINISHED ⓘ |
| constructionStartDate | 1937 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| creates | Lake Travis NERFINISHED ⓘ |
| floodControlFunction | protects Austin metropolitan area ⓘ |
| hasPowerPlant | yes ⓘ |
| hasSpillway | yes ⓘ |
| height |
278 feet
ⓘ
about 85 meters ⓘ |
| impounds | Lake Travis NERFINISHED ⓘ |
| installedCapacity | about 108 MW ⓘ |
| length |
7089 feet
ⓘ
about 2160 meters ⓘ |
| locatedIn | Travis County, Texas NERFINISHED ⓘ |
| locatedNear | Austin, Texas NERFINISHED ⓘ |
| locatedOnRiver | Colorado River NERFINISHED ⓘ |
| managesRiver | Lower Colorado River NERFINISHED ⓘ |
| mapFeature | Colorado River basin in Texas NERFINISHED ⓘ |
| namedFor | Joseph J. Mansfield NERFINISHED ⓘ |
| nearCity | Austin, Texas NERFINISHED ⓘ |
| numberOfSpillwayGates | 24 ⓘ |
| openingDate | 1941 ⓘ |
| operator | Lower Colorado River Authority NERFINISHED ⓘ |
| owner | Lower Colorado River Authority NERFINISHED ⓘ |
| partOf | Lower Colorado River Authority system ⓘ |
| powerPlantType | conventional hydroelectric ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ water supply ⓘ |
| recreationActivity |
boating
ⓘ
fishing ⓘ swimming ⓘ |
| region | Central Texas NERFINISHED ⓘ |
| renamedAfter | Joseph J. Mansfield NERFINISHED ⓘ |
| reservoirName | Lake Travis NERFINISHED ⓘ |
| reservoirUse |
industrial water supply
ⓘ
municipal water supply ⓘ recreation ⓘ |
| spillwayType | gated spillway ⓘ |
| state | Texas ⓘ |
| typeOfConcreteDam | multiple-arch gravity dam ⓘ |
| watercourse | Colorado River (Texas) NERFINISHED ⓘ |
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: Mansfield Dam Description of subject: Mansfield Dam is a large concrete dam on the Colorado River in central Texas, built for flood control, water supply, and hydroelectric power generation.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.