Red Bluff Diversion Dam
E313043
Red Bluff Diversion Dam is a concrete diversion structure on the Sacramento River in California that historically supplied irrigation water to regional canals and agricultural lands.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Red Bluff Diversion Dam canonical | 1 |
| Red Bluff Diversion Dam (nearby) | 1 |
| Red Bluff Diversion Dam fish passage facilities | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2853723 — 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: Red Bluff Diversion Dam Context triple: [Tehama-Colusa Canal, startPoint, Red Bluff Diversion Dam]
-
A.
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.
-
B.
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.
-
C.
Castaic Dam
Castaic Dam is a large embankment dam in Los Angeles County, California, that forms Castaic Lake and plays a key role in water storage and hydroelectric power generation for Southern California.
-
D.
Prosser Creek Dam
Prosser Creek Dam is an earthfill dam in Nevada County, California, that creates Prosser Creek Reservoir for water storage, flood control, and recreation in the Truckee River basin.
-
E.
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.
- 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: Red Bluff Diversion Dam Target entity description: Red Bluff Diversion Dam is a concrete diversion structure on the Sacramento River in California that historically supplied irrigation water to regional canals and agricultural lands.
-
A.
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.
-
B.
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.
-
C.
Castaic Dam
Castaic Dam is a large embankment dam in Los Angeles County, California, that forms Castaic Lake and plays a key role in water storage and hydroelectric power generation for Southern California.
-
D.
Prosser Creek Dam
Prosser Creek Dam is an earthfill dam in Nevada County, California, that creates Prosser Creek Reservoir for water storage, flood control, and recreation in the Truckee River basin.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
diversion dam ⓘ water infrastructure ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionBegan | 1960 ⓘ |
| constructionMaterial | concrete ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Sacramento River ⓘ |
| elevation | approximately 300 feet above sea level ⓘ |
| environmentalIssue | obstruction to salmon migration ⓘ |
| environmentalMitigation | modified operations to improve fish passage ⓘ |
| hasAssociatedCanal |
Corning Canal
ⓘ
Tehama-Colusa Canal ⓘ |
| hasFishPassageFacility |
fish ladders
ⓘ
fish screens ⓘ |
| hasFunction | diverts Sacramento River flows into canals ⓘ |
| hasSpillwayType | gated ogee spillway ⓘ |
| historicalUse |
supplied irrigation water to agricultural lands
ⓘ
supplied irrigation water to regional canals ⓘ |
| jurisdiction | federal ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Red Bluff, California ⓘ Tehama County ⓘ
surface form:
Tehama County, California
United States of America ⓘ
surface form:
United States
|
| locatedInHydrologicRegion |
Central Valley
ⓘ
surface form:
California Central Valley hydrologic region
|
| locatedInStateWaterSystem | California water system ⓘ |
| locatedOn | Sacramento River ⓘ |
| managedBy |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| nearCity | Red Bluff, California ⓘ |
| nearLandmark |
Red Bluff, California
ⓘ
surface form:
city of Red Bluff
|
| notableFor | impacts on anadromous fish migration ⓘ |
| opened | 1964 ⓘ |
| operator |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| owner |
Bureau of Reclamation
ⓘ
surface form:
United States Bureau of Reclamation
|
| partOf | Central Valley Project ⓘ |
| primaryBenefit |
irrigation supply for Corning Canal Service Area
ⓘ
irrigation supply for Tehama-Colusa Canal Service Area ⓘ |
| project | Central Valley Project ⓘ |
| purpose |
agricultural water supply
ⓘ
fish passage and control ⓘ irrigation water diversion ⓘ |
| region | Sacramento Valley ⓘ |
| riverBasin | Sacramento River Basin ⓘ |
| servesSector |
agriculture
ⓘ
irrigation districts ⓘ |
| status | largely decommissioned for diversion ⓘ |
| structureType | gated diversion dam ⓘ |
| watercourse | Sacramento River ⓘ |
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: Red Bluff Diversion Dam Description of subject: Red Bluff Diversion Dam is a concrete diversion structure on the Sacramento River in California that historically supplied irrigation water to regional canals and agricultural lands.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Red Bluff Diversion Dam (nearby)
this entity surface form:
Red Bluff Diversion Dam fish passage facilities