Arrowrock Dam
E941243
Arrowrock Dam is an early 20th-century concrete arch dam in Idaho, notable for its role in irrigation, flood control, and hydroelectric power generation in the Boise River basin.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Arrowrock Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11051872 — 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: Arrowrock Dam Context triple: [Boise River, hasDam, Arrowrock 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.
Cascade Dam
Cascade Dam is a hydroelectric and flood-control structure located on the Thornapple River in Michigan.
-
C.
LaBarge Dam
LaBarge Dam is a small hydroengineering structure located on the Thornapple River in Michigan, used primarily for water level control and local recreation.
-
D.
Indian Valley Dam
Indian Valley Dam is an earth-fill embankment dam in Lake County, California, that creates Indian Valley Reservoir for water storage, flood control, and recreation along Cache Creek.
-
E.
Sherman Dam
Sherman Dam is a hydroelectric and flood-control structure located on the Deerfield River in the northeastern United States.
- 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: Arrowrock Dam Target entity description: Arrowrock Dam is an early 20th-century concrete arch dam in Idaho, notable for its role in irrigation, flood control, and hydroelectric power generation in the Boise River basin.
-
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.
Cascade Dam
Cascade Dam is a hydroelectric and flood-control structure located on the Thornapple River in Michigan.
-
C.
LaBarge Dam
LaBarge Dam is a small hydroengineering structure located on the Thornapple River in Michigan, used primarily for water level control and local recreation.
-
D.
Indian Valley Dam
Indian Valley Dam is an earth-fill embankment dam in Lake County, California, that creates Indian Valley Reservoir for water storage, flood control, and recreation along Cache Creek.
-
E.
Sherman Dam
Sherman Dam is a hydroelectric and flood-control structure located on the Deerfield River in the northeastern United States.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
concrete arch dam
ⓘ
dam ⓘ gravity arch dam ⓘ |
| architecturalStyle | concrete arch ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| category |
Arch dams
ⓘ
Dams in Idaho ⓘ United States Bureau of Reclamation dams ⓘ |
| constructionBegan | 1911 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designedBy | United States Bureau of Reclamation NERFINISHED ⓘ |
| elevationAtCrest | approximately 3,220 feet above sea level ⓘ |
| hasReservoir | Arrowrock Reservoir NERFINISHED ⓘ |
| hasSpillway | yes ⓘ |
| height | approximately 350 feet ⓘ |
| historicalPeriod | early 20th century ⓘ |
| isPartOf | Boise River irrigation system NERFINISHED ⓘ |
| length | approximately 1,150 feet ⓘ |
| locatedIn |
Boise County, Idaho
NERFINISHED
ⓘ
Boise River NERFINISHED ⓘ Idaho ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInProtectedArea | Boise National Forest NERFINISHED ⓘ |
| locatedNear | Boise, Idaho NERFINISHED ⓘ |
| locatedUpstreamOf |
Anderson Ranch Dam
NERFINISHED
ⓘ
Lucky Peak Dam NERFINISHED ⓘ |
| managesWaterFor | Boise River basin NERFINISHED ⓘ |
| materialUsed | concrete ⓘ |
| nearbyCity | Boise, Idaho NERFINISHED ⓘ |
| nearbyCommunity | Arrowrock, Idaho (historic site) NERFINISHED ⓘ |
| notableFor | being one of the highest dams in the world at the time of completion ⓘ |
| openingDate | 1915 ⓘ |
| operator | United States Bureau of Reclamation NERFINISHED ⓘ |
| owner | United States Bureau of Reclamation NERFINISHED ⓘ |
| partOf | Boise Project NERFINISHED ⓘ |
| provides |
flow regulation
ⓘ
hydropower ⓘ water storage ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ |
| regionServed | Treasure Valley, Idaho NERFINISHED ⓘ |
| reservoirCapacity | approximately 286,000 acre-feet ⓘ |
| reservoirName | Arrowrock Reservoir NERFINISHED ⓘ |
| riverCrossed | Boise River NERFINISHED ⓘ |
| spillwayType | overflow spillway ⓘ |
| usedFor |
downstream flood control
ⓘ
downstream irrigation supply ⓘ hydroelectric power production ⓘ |
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: Arrowrock Dam Description of subject: Arrowrock Dam is an early 20th-century concrete arch dam in Idaho, notable for its role in irrigation, flood control, and hydroelectric power generation in the Boise River basin.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.