Wells Dam
E404638
Wells Dam is a hydroelectric dam on the Columbia River in Washington State, known for its distinctive hydrocombine design and role in regional power generation and fish passage.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Wells Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3667392 — 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: Wells Dam Context triple: [Chief Joseph Dam, upstreamFrom, Wells Dam]
-
A.
Wyman Dam
Wyman Dam is a hydroelectric dam in Maine that impounds the Kennebec River to form Wyman Lake and generate power.
-
B.
Wyman Dam
Wyman Dam is a hydroelectric dam located on the Androscoggin River in Maine, used for power generation and river flow regulation.
-
C.
Forestville Dam
Forestville Dam is a hydroelectric and recreational dam located on the Dead River near Marquette in Michigan’s Upper Peninsula.
-
D.
Tuckertown Dam
Tuckertown Dam is a hydroelectric dam on the Yadkin River in North Carolina that forms Tuckertown Reservoir as part of a series of power-generating dams along the river.
-
E.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
- 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: Wells Dam Target entity description: Wells Dam is a hydroelectric dam on the Columbia River in Washington State, known for its distinctive hydrocombine design and role in regional power generation and fish passage.
-
A.
Wyman Dam
Wyman Dam is a hydroelectric dam located on the Androscoggin River in Maine, used for power generation and river flow regulation.
-
B.
Wyman Dam
Wyman Dam is a hydroelectric dam in Maine that impounds the Kennebec River to form Wyman Lake and generate power.
-
C.
Forestville Dam
Forestville Dam is a hydroelectric and recreational dam located on the Dead River near Marquette in Michigan’s Upper Peninsula.
-
D.
Tuckertown Dam
Tuckertown Dam is a hydroelectric dam on the Yadkin River in North Carolina that forms Tuckertown Reservoir as part of a series of power-generating dams along the river.
-
E.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
hydroelectric dam
ⓘ
run-of-the-river dam ⓘ |
| constructionBegan | 1962 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| elevationAtCrest | approximately 781 feet above sea level ⓘ |
| FERCLicenseHolder | Douglas County Public Utility District ⓘ |
| FERCProjectNumber | 2149 ⓘ |
| fishPassageFacility |
fish ladders
ⓘ
juvenile fish bypass system ⓘ |
| generatingUnits | 10 generating units ⓘ |
| gridConnection |
Northwestern U.S. power grid
ⓘ
surface form:
Pacific Northwest power grid
|
| hasDesign | hydrocombine design ⓘ |
| hasNotableFeature |
fish hatchery facilities nearby
ⓘ
integrated powerhouse and spillway hydrocombine structure ⓘ |
| hasRecreation |
boating
ⓘ
fishing ⓘ picnic areas ⓘ |
| hasSpillwayType | gated spillway ⓘ |
| hasStructureType |
concrete dam
ⓘ
gravity dam ⓘ |
| installedCapacity | 840 MW ⓘ |
| isCrossedBy | U.S. Route 97 ⓘ |
| isPartOf | Columbia River hydropower system ⓘ |
| locatedIn | Douglas County, Washington NERFINISHED ⓘ |
| locatedNear |
Brewster, Washington
NERFINISHED
ⓘ
Pateros, Washington ⓘ |
| locatedOnRiver | Columbia River ⓘ |
| nearbyDownstreamDam | Rocky Reach Dam NERFINISHED ⓘ |
| nearbyUpstreamDam | Chief Joseph Dam NERFINISHED ⓘ |
| numberOfSpillwayBays | 11 ⓘ |
| numberOfTurbines | 10 ⓘ |
| openingDate | 1967 ⓘ |
| operator | Douglas County Public Utility District ⓘ |
| owner | Douglas County Public Utility District ⓘ |
| providesService | wholesale electric power ⓘ |
| purpose |
fish passage
ⓘ
power generation ⓘ |
| regionServed |
Douglas County
ⓘ
Okanogan County NERFINISHED ⓘ |
| reservoir | Lake Pateros ⓘ |
| reservoirCapacity | approximately 333,000 acre-feet ⓘ |
| reservoirLength | about 30 miles ⓘ |
| state | Washington ⓘ |
| supportsSpecies |
Chinook salmon
ⓘ
sockeye salmon ⓘ steelhead ⓘ |
| turbineType | Kaplan 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: Wells Dam Description of subject: Wells Dam is a hydroelectric dam on the Columbia River in Washington State, known for its distinctive hydrocombine design and role in regional power generation and fish passage.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.