Rocky Reach Dam
E426290
Rocky Reach Dam is a major hydroelectric dam on the Columbia River in Washington State, known for generating power and incorporating fish passage and recreation facilities.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rocky Reach Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3695865 — 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: Rocky Reach Dam Context triple: [Columbia River hydropower system, includesFacility, Rocky Reach 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.
-
B.
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.
-
C.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
-
D.
Painted Rock Dam
Painted Rock Dam is a flood-control structure on the Gila River in Arizona, built by the U.S. Army Corps of Engineers to manage seasonal flows and protect downstream communities.
-
E.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
- 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: Rocky Reach Dam Target entity description: Rocky Reach Dam is a major hydroelectric dam on the Columbia River in Washington State, known for generating power and incorporating fish passage and recreation facilities.
-
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.
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.
-
C.
McClure Dam
McClure Dam is a hydroelectric dam on the Dead River in Michigan, forming McClure Basin and providing power and water management for the surrounding region.
-
D.
Painted Rock Dam
Painted Rock Dam is a flood-control structure on the Gila River in Arizona, built by the U.S. Army Corps of Engineers to manage seasonal flows and protect downstream communities.
-
E.
Denison Dam
Denison Dam is a large earthen dam on the Red River between Texas and Oklahoma, built for flood control, hydroelectric power generation, and water supply.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ |
| alsoKnownAs | Rock Island Pool (reservoir reach) NERFINISHED ⓘ |
| annualGeneration | about 7,000 GWh ⓘ |
| commissioned | 1961 ⓘ |
| constructionBegan | 1956 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createsReservoir | Rocky Reach Reservoir NERFINISHED ⓘ |
| energySource | hydropower ⓘ |
| expanded | 1969 ⓘ |
| gridConnection | Northwestern United States power grid NERFINISHED ⓘ |
| hasFeature |
fish viewing windows
ⓘ
interpretive exhibits ⓘ landscaped grounds ⓘ |
| hasFishPassage | yes ⓘ |
| hasFishStudyPrograms | yes ⓘ |
| hasSpillway | yes ⓘ |
| hasSpillwayGates | yes ⓘ |
| hasVisitorCenter | yes ⓘ |
| installedCapacity |
1300 MW
ⓘ
approximately 1.3 gigawatts ⓘ |
| locatedIn |
Chelan County, Washington
NERFINISHED
ⓘ
Washington ⓘ
surface form:
Washington (state)
|
| locatedInCountry |
United States of America
ⓘ
surface form:
United States
|
| locatedOnRiver | Columbia River NERFINISHED ⓘ |
| managedBy | Chelan PUD Hydro Operations NERFINISHED ⓘ |
| nearCity |
Entiat, Washington
NERFINISHED
ⓘ
Wenatchee, Washington NERFINISHED ⓘ |
| numberOfTurbines | 11 ⓘ |
| offersRecreation |
boating
ⓘ
fishing ⓘ picnicking ⓘ |
| opened | 1961 ⓘ |
| operator | Chelan County Public Utility District NERFINISHED ⓘ |
| ownedBy | Chelan County Public Utility District NERFINISHED ⓘ |
| partOf | Columbia River hydropower system NERFINISHED ⓘ |
| purpose |
hydroelectric power generation
ⓘ
navigation improvement ⓘ recreation ⓘ |
| regionServed |
Chelan County, Washington
NERFINISHED
ⓘ
Pacific Northwest ⓘ |
| reservoirName | Rocky Reach Reservoir NERFINISHED ⓘ |
| riverBasin | Columbia River Basin NERFINISHED ⓘ |
| safetyClassification | high hazard potential dam ⓘ |
| turbineType | Francis turbine ⓘ |
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: Rocky Reach Dam Description of subject: Rocky Reach Dam is a major hydroelectric dam on the Columbia River in Washington State, known for generating power and incorporating fish passage and recreation facilities.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.