Stewart Mountain Dam
E375097
Stewart Mountain Dam is a concrete thin-arch dam on Arizona’s Salt River that forms Saguaro Lake and provides water storage, hydroelectric power, and recreation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Stewart Mountain Dam canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T3338638 — 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: Stewart Mountain Dam Context triple: [Salt River, hasDam, Stewart Mountain Dam]
-
A.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
B.
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.
-
C.
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.
-
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.
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: Stewart Mountain Dam Target entity description: Stewart Mountain Dam is a concrete thin-arch dam on Arizona’s Salt River that forms Saguaro Lake and provides water storage, hydroelectric power, and recreation.
-
A.
Gillespie Dam
Gillespie Dam is an early 20th-century concrete gravity dam on Arizona’s Gila River, historically used for irrigation and now noted as a local landmark and wildlife habitat area.
-
B.
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.
-
C.
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.
-
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.
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 (48)
| Predicate | Object |
|---|---|
| instanceOf |
arch dam
ⓘ
concrete thin-arch dam ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| completionDate | 1930 ⓘ |
| constructionBegan | 1928 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| downstreamFrom |
Canyon Lake
NERFINISHED
ⓘ
Mormon Flat Dam NERFINISHED ⓘ |
| formsReservoir | Saguaro Lake ⓘ |
| hasHydraulicHead | approximately 60 meters ⓘ |
| hasPowerPlant | Stewart Mountain Dam hydroelectric power plant ⓘ |
| hasRecreationArea |
Saguaro Lake
ⓘ
surface form:
Saguaro Lake recreation area
|
| hasReservoir | Saguaro Lake ⓘ |
| hasSpillway | overflow spillway ⓘ |
| impounds | Salt River ⓘ |
| locatedIn |
Arizona
ⓘ
Maricopa County, Arizona ⓘ |
| locatedInProtectedArea | Tonto National Forest NERFINISHED ⓘ |
| locatedInWatershed |
Gila River
ⓘ
surface form:
Gila River basin
|
| locatedNear |
Mesa, Arizona
ⓘ
Phoenix, Arizona ⓘ |
| locatedOnWatercourse | Salt River ⓘ |
| material | concrete ⓘ |
| namedAfter | Stewart Mountain NERFINISHED ⓘ |
| nearbyCity |
Fountain Hills, Arizona
ⓘ
Mesa, Arizona ⓘ |
| opened | 1930 ⓘ |
| operator | Salt River Project ⓘ |
| ownedBy | Salt River Project ⓘ |
| partOf |
Salt River Project
ⓘ
surface form:
Salt River Project power system
Salt River Project ⓘ
surface form:
Salt River Project water system
Salt River Project ⓘ
surface form:
Salt River chain of dams
|
| powerPlantType | conventional hydroelectric ⓘ |
| purpose |
hydroelectric power generation
ⓘ
recreation ⓘ water storage ⓘ |
| region |
central Arizona
ⓘ
surface form:
Central Arizona
|
| structureType | thin-arch ⓘ |
| upstreamFrom | Granite Reef Diversion Dam NERFINISHED ⓘ |
| usedBy |
Phoenix metropolitan area
ⓘ
surface form:
Greater Phoenix metropolitan area
Salt River Project ⓘ
surface form:
Salt River Project irrigation districts
|
| usedFor |
boating
ⓘ
fishing ⓘ flood control (limited) ⓘ irrigation water regulation ⓘ watersports ⓘ |
| watercourseDownstream |
Salt River
ⓘ
surface form:
Salt River below Saguaro Lake
|
| watercourseUpstream |
Salt River
ⓘ
surface form:
Salt River above Saguaro Lake
|
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: Stewart Mountain Dam Description of subject: Stewart Mountain Dam is a concrete thin-arch dam on Arizona’s Salt River that forms Saguaro Lake and provides water storage, hydroelectric power, and recreation.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.