Lewiston Dam
E498922
Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lewiston Dam canonical | 4 |
| Trinity and Lewiston dams | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4957782 — 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: Lewiston Dam Context triple: [Trinity River Basin, contains, Lewiston Dam]
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
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.
-
C.
Libby Dam
Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
-
D.
Walterville Dam
Walterville Dam is a hydroelectric diversion dam on Oregon’s McKenzie River that channels water to the Walterville Power Canal and generating station.
-
E.
North Fork Dam
North Fork Dam is a hydroelectric and water-supply dam located on the Clackamas River in northwestern Oregon.
- 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: Lewiston Dam Target entity description: Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
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.
-
C.
Libby Dam
Libby Dam is a large hydroelectric and flood-control dam on the Kootenai River in Montana that contributes significant power and water management capacity to the Columbia River Basin.
-
D.
Walterville Dam
Walterville Dam is a hydroelectric diversion dam on Oregon’s McKenzie River that channels water to the Walterville Power Canal and generating station.
-
E.
North Fork Dam
North Fork Dam is a hydroelectric and water-supply dam located on the Clackamas River in northwestern Oregon.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
concrete gravity dam
ⓘ
dam ⓘ |
| associatedWith | Trinity River water diversion system ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| country |
United States
ⓘ
linked to:
United States of America
|
| formsReservoir | Lewiston Lake ⓘ |
| function | regulates releases from upstream Trinity River storage ⓘ |
| hasReservoir | Lewiston Lake ⓘ |
| hasUse |
river regulation
ⓘ
water management ⓘ |
| impounds | Trinity River at Lewiston Lake ⓘ |
| locatedIn |
Northern California
ⓘ
Trinity County, California ⓘ |
| locatedNear | Lewiston, California ⓘ |
| locatedOnRiver | Trinity River ⓘ |
| managesWaterFor | Trinity River Basin ⓘ |
| material | concrete ⓘ |
| partOf | Trinity River Basin ⓘ |
| purpose |
flow regulation
ⓘ
water diversion ⓘ water storage ⓘ |
| riverBasin | Trinity River Basin ⓘ |
| upstreamFrom | Trinity River below Lewiston ⓘ |
| watercourse | Trinity 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: Lewiston Dam Description of subject: Lewiston Dam is a concrete structure on the Trinity River in Northern California that forms Lewiston Lake and helps regulate water storage and diversion within the Trinity River Basin.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lewiston Dam