Prado Dam
E613327
Prado Dam is a major flood-control and water-conservation structure on Southern California’s Santa Ana River, protecting downstream communities in Orange, Riverside, and San Bernardino counties.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Prado Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6659556 — 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: Prado Dam Context triple: [Santa Ana River, hasDam, Prado Dam]
-
A.
Valdecañas Dam
Valdecañas Dam is a large hydroelectric and water-regulation dam on the Tagus River in Spain, known for forming the Valdecañas Reservoir used for power generation, irrigation, and recreation.
-
B.
San Roque Dam
San Roque Dam is one of the largest dams in the Philippines, serving as a major source of hydroelectric power, irrigation, and flood control in the Luzon region.
-
C.
Alcántara Dam
Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
-
D.
Piedra del Águila Dam
Piedra del Águila Dam is a major hydroelectric dam in Argentine Patagonia, known for its large power-generating capacity and role in regulating the Limay River.
-
E.
Don Pedro Dam
Don Pedro Dam is a major embankment dam on the Tuolumne River in California, forming Don Pedro Reservoir and serving as a key source of water storage, hydroelectric power, and recreation 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: Prado Dam Target entity description: Prado Dam is a major flood-control and water-conservation structure on Southern California’s Santa Ana River, protecting downstream communities in Orange, Riverside, and San Bernardino counties.
-
A.
Valdecañas Dam
Valdecañas Dam is a large hydroelectric and water-regulation dam on the Tagus River in Spain, known for forming the Valdecañas Reservoir used for power generation, irrigation, and recreation.
-
B.
San Roque Dam
San Roque Dam is one of the largest dams in the Philippines, serving as a major source of hydroelectric power, irrigation, and flood control in the Luzon region.
-
C.
Alcántara Dam
Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
-
D.
Piedra del Águila Dam
Piedra del Águila Dam is a major hydroelectric dam in Argentine Patagonia, known for its large power-generating capacity and role in regulating the Limay River.
-
E.
Don Pedro Dam
Don Pedro Dam is a major embankment dam on the Tuolumne River in California, forming Don Pedro Reservoir and serving as a key source of water storage, hydroelectric power, and recreation in the region.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
earthfill dam
ⓘ
flood control structure ⓘ water conservation structure ⓘ |
| associatedWith | Santa Ana Watershed Project Authority ⓘ |
| catchmentArea | about 2,255 square miles ⓘ |
| completionDate | 1941 ⓘ |
| constructionStartDate | 1936 ⓘ |
| coordinates | 33.889°N 117.635°W ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crestElevation | about 566 feet above mean sea level ⓘ |
| downstreamOf | Seven Oaks Dam ⓘ |
| hasOutletWorks | gated outlet works ⓘ |
| hasSpillway | concrete overflow spillway ⓘ |
| height | about 106 feet ⓘ |
| length | about 2,280 feet ⓘ |
| locatedIn |
Riverside County, California
ⓘ
linked to:
Riverside County
|
| locatedNear |
Chino, California
ⓘ
linked to:
City of Chino
Corona, California ⓘ |
| locatedOnRiver | Santa Ana River ⓘ |
| nearFacility |
Prado Olympic Shooting Park
ⓘ
Prado Regional Park ⓘ Prado Wetlands ⓘ |
| notableEvent | subject to major flood risk reassessments after 1969 and 1980 storms ⓘ |
| openingYear | 1941 ⓘ |
| operatedByDistrict | USACE Los Angeles District ⓘ |
| operator | U.S. Army Corps of Engineers ⓘ |
| ownedBy | United States government ⓘ |
| partOfProject |
Santa Ana River Mainstem Project
ⓘ
linked to:
Santa Ana River flood control system
|
| protectsCity |
Anaheim, California
ⓘ
linked to:
Anaheim
Chino, California ⓘ
linked to:
City of Chino
Corona, California ⓘ Fullerton, California ⓘ
linked to:
Fullerton
Garden Grove, California ⓘ
linked to:
Garden Grove
Orange, California ⓘ Riverside, California ⓘ Santa Ana, California ⓘ
linked to:
Santa Ana
|
| protectsCounty |
Orange County, California
ⓘ
Riverside County, California ⓘ
linked to:
Riverside County
San Bernardino County, California ⓘ
linked to:
San Bernardino County
|
| providesHabitat | wetlands for migratory birds ⓘ |
| purpose |
flood control
ⓘ
recreation ⓘ water conservation ⓘ |
| region | Southern California ⓘ |
| reservoirCapacity | about 362,000 acre-feet at spillway crest ⓘ |
| reservoirName |
Prado Basin
ⓘ
linked to:
Sepulveda Basin
Prado Flood Control Basin ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| underwentModification | embankment and outlet modifications as part of Santa Ana River Mainstem improvements ⓘ |
| upstreamOf | Orange County Water District recharge facilities ⓘ |
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: Prado Dam Description of subject: Prado Dam is a major flood-control and water-conservation structure on Southern California’s Santa Ana River, protecting downstream communities in Orange, Riverside, and San Bernardino counties.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.