Longhorn Dam
E453617
Longhorn Dam is a concrete dam on the Colorado River in Austin, Texas, that impounds the river to form Lady Bird Lake and helps manage water levels and flow through the city.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Longhorn Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4190277 — 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: Longhorn Dam Context triple: [Lady Bird Lake, createdBy, Longhorn Dam]
-
A.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
B.
Lewisville Dam
Lewisville Dam is an earthen embankment dam in North Texas that impounds the Elm Fork of the Trinity River to form Lewisville Lake for flood control, water supply, and recreation.
-
C.
J.C. Boyle Dam
J.C. Boyle Dam is a hydroelectric dam on the Klamath River in southern Oregon, known for power generation and its role in regional water and environmental management.
-
D.
Eufaula Dam
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.
-
E.
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.
- 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: Longhorn Dam Target entity description: Longhorn Dam is a concrete dam on the Colorado River in Austin, Texas, that impounds the river to form Lady Bird Lake and helps manage water levels and flow through the city.
-
A.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
B.
Lewisville Dam
Lewisville Dam is an earthen embankment dam in North Texas that impounds the Elm Fork of the Trinity River to form Lewisville Lake for flood control, water supply, and recreation.
-
C.
J.C. Boyle Dam
J.C. Boyle Dam is a hydroelectric dam on the Klamath River in southern Oregon, known for power generation and its role in regional water and environmental management.
-
D.
Eufaula Dam
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.
-
E.
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.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
concrete dam
ⓘ
gravity dam ⓘ |
| affects |
Colorado River flow through Austin
ⓘ
Lady Bird Lake water level ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| cityServed | Austin, Texas NERFINISHED ⓘ |
| constructionMaterial | concrete ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Lady Bird Lake NERFINISHED ⓘ |
| crosses | Colorado River (Texas) NERFINISHED ⓘ |
| formerNameOfReservoir | Town Lake NERFINISHED ⓘ |
| hasFunction | maintain constant lake level through downtown Austin ⓘ |
| impounds | Colorado River (Texas) NERFINISHED ⓘ |
| isPartOf | Austin, Texas water management system ⓘ |
| locatedInCity | Austin, Texas NERFINISHED ⓘ |
| locatedInCountry |
United States of America
ⓘ
surface form:
United States
|
| locatedInCounty | Travis County, Texas NERFINISHED ⓘ |
| locatedInState | Texas NERFINISHED ⓘ |
| locatedOnRiver | Colorado River (Texas) NERFINISHED ⓘ |
| near |
Holly Shores at Town Lake Metropolitan Park
NERFINISHED
ⓘ
Lady Bird Lake Hike-and-Bike Trail NERFINISHED ⓘ |
| operator | City of Austin NERFINISHED ⓘ |
| owner | City of Austin NERFINISHED ⓘ |
| partOf | Lower Colorado River basin NERFINISHED ⓘ |
| purpose |
flood management support
ⓘ
flow regulation ⓘ recreation support ⓘ water level control ⓘ |
| 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: Longhorn Dam Description of subject: Longhorn Dam is a concrete dam on the Colorado River in Austin, Texas, that impounds the river to form Lady Bird Lake and helps manage water levels and flow through the city.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.