Nine Mile Dam
E672935
Nine Mile Dam is a historic hydroelectric dam on Washington State’s Spokane River that has supplied power to the Spokane region since the early 20th century.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nine Mile Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7183028 — 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: Nine Mile Dam Context triple: [Spokane River, hasDam, Nine Mile Dam]
-
A.
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.
-
B.
Goodwin Dam
Goodwin Dam is a concrete gravity diversion dam on California’s Stanislaus River that helps regulate river flow and supplies irrigation water to surrounding agricultural areas.
-
C.
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.
-
D.
Chatfield Dam
Chatfield Dam is a large flood-control and water-storage structure in Colorado that creates Chatfield Reservoir on the South Platte River near Denver.
-
E.
Dry Falls Dam
Dry Falls Dam is a key irrigation and water management structure in central Washington State, built as part of the Columbia Basin Project to help distribute Columbia River water to surrounding agricultural lands.
- 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: Nine Mile Dam Target entity description: Nine Mile Dam is a historic hydroelectric dam on Washington State’s Spokane River that has supplied power to the Spokane region since the early 20th century.
-
A.
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.
-
B.
Goodwin Dam
Goodwin Dam is a concrete gravity diversion dam on California’s Stanislaus River that helps regulate river flow and supplies irrigation water to surrounding agricultural areas.
-
C.
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.
-
D.
Chatfield Dam
Chatfield Dam is a large flood-control and water-storage structure in Colorado that creates Chatfield Reservoir on the South Platte River near Denver.
-
E.
Dry Falls Dam
Dry Falls Dam is a key irrigation and water management structure in central Washington State, built as part of the Columbia Basin Project to help distribute Columbia River water to surrounding agricultural lands.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
hydroelectric dam ⓘ |
| builtFor | hydroelectric power generation ⓘ |
| constructionStartDate | 1908 ⓘ |
| country | United States of America ⓘ |
| hasFunction | regional power supply ⓘ |
| hasHistoricSignificance | early 20th-century hydroelectric development in the Inland Northwest ⓘ |
| hasReservoir | Nine Mile Reservoir NERFINISHED ⓘ |
| hasStructureType | concrete gravity dam ⓘ |
| hasUse | electricity generation ⓘ |
| heritageDesignation | National Register of Historic Places ⓘ |
| heritageDesignationDate | 1990 ⓘ |
| inception | 1908 ⓘ |
| isAccessibleFrom | Nine Mile Road NERFINISHED ⓘ |
| isAssociatedWith |
Spokane River hydropower history
ⓘ
development of Spokane’s electric grid ⓘ |
| isPartOfIndustry | electric power industry ⓘ |
| locatedIn |
Spokane County, Washington
NERFINISHED
ⓘ
Washington ⓘ
surface form:
Washington (state)
|
| locatedInCountry | United States of America NERFINISHED ⓘ |
| locatedNear | Nine Mile Falls, Washington NERFINISHED ⓘ |
| locatedOnWaterway | Spokane River NERFINISHED ⓘ |
| namedAfter | Nine Mile Falls, Washington NERFINISHED ⓘ |
| nearCity | Spokane, Washington NERFINISHED ⓘ |
| openingDate | 1908 ⓘ |
| operator | Avista Corporation NERFINISHED ⓘ |
| owner | Avista Corporation NERFINISHED ⓘ |
| partOf | Spokane River hydropower system NERFINISHED ⓘ |
| riverBasin | Columbia River basin NERFINISHED ⓘ |
| state | Washington (state) NERFINISHED ⓘ |
| suppliesPowerTo | Spokane region NERFINISHED ⓘ |
| usedSince | early 20th century ⓘ |
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: Nine Mile Dam Description of subject: Nine Mile Dam is a historic hydroelectric dam on Washington State’s Spokane River that has supplied power to the Spokane region since the early 20th century.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.