Monticello Dam
E585520
Monticello Dam is a large concrete arch dam in Napa County, California, that creates Lake Berryessa and provides water storage, flood control, and hydroelectric power.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Monticello Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6130101 — 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: Monticello Dam Context triple: [Putah Creek, hasDam, Monticello Dam]
-
A.
West Point Dam
West Point Dam is a large U.S. Army Corps of Engineers hydroelectric and flood-control dam on the Chattahoochee River, forming West Point Lake on the Alabama–Georgia border.
-
B.
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.
-
C.
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.
-
D.
Harriman Dam
Harriman Dam is a hydroelectric dam in Vermont that impounds the Deerfield River to form Harriman Reservoir, one of the state’s largest lakes.
-
E.
Gardiner Dam
Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
- 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: Monticello Dam Target entity description: Monticello Dam is a large concrete arch dam in Napa County, California, that creates Lake Berryessa and provides water storage, flood control, and hydroelectric power.
-
A.
West Point Dam
West Point Dam is a large U.S. Army Corps of Engineers hydroelectric and flood-control dam on the Chattahoochee River, forming West Point Lake on the Alabama–Georgia border.
-
B.
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.
-
C.
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.
-
D.
Harriman Dam
Harriman Dam is a hydroelectric dam in Vermont that impounds the Deerfield River to form Harriman Reservoir, one of the state’s largest lakes.
-
E.
Gardiner Dam
Gardiner Dam is one of Canada's largest earth-filled dams, located in Saskatchewan and forming Lake Diefenbaker for hydroelectric power, irrigation, and flood control.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
concrete arch dam
ⓘ
dam ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| catchmentArea | 576 square miles ⓘ |
| constructionBegan | 1953 ⓘ |
| constructionMaterial | concrete ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| createsReservoir | Lake Berryessa ⓘ |
| crestElevation | 440 feet above sea level ⓘ |
| designType | arch dam ⓘ |
| hasNotableFeature | circular overflow spillway visible from above ⓘ |
| height |
304 feet
ⓘ
93 meters ⓘ |
| hydraulicHead | about 250 feet ⓘ |
| impounds | Putah Creek ⓘ |
| installedCapacity | 11.5 megawatts ⓘ |
| length |
1,023 feet
ⓘ
312 meters ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Napa County, California ⓘ
linked to:
Napa County
Putah Creek ⓘ |
| locatedInWatershed |
Sacramento–San Joaquin River watershed
ⓘ
linked to:
Central Valley watershed system
|
| managesWaterFor |
City of Fairfield
ⓘ
City of Suisun City ⓘ
linked to:
City of Suisun City, California
City of Vacaville ⓘ
linked to:
Vacaville, California
City of Vallejo ⓘ
linked to:
City of Vallejo, California
Solano County ⓘ Travis Air Force Base ⓘ |
| namedAfter | Monticello, California ⓘ |
| nearbyCity |
Napa, California
ⓘ
linked to:
Napa
Winters, California ⓘ |
| openingDate | 1957 ⓘ |
| operator |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| owner |
United States Bureau of Reclamation
ⓘ
linked to:
Bureau of Reclamation
|
| partOf | Solano Project ⓘ |
| powerPlant | Monticello Dam Powerplant ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ water storage ⓘ |
| reservoirCapacity | 1,600,000 acre-feet ⓘ |
| reservoirName | Lake Berryessa ⓘ |
| reservoirSurfaceArea | about 20,700 acres ⓘ |
| riverCrossed | Putah Creek ⓘ |
| spillwayCapacity | 73,000 cubic feet per second ⓘ |
| spillwayName | Glory Hole ⓘ |
| spillwayType | morning-glory spillway ⓘ |
| submergedSettlement | town of Monticello ⓘ |
| usedFor |
irrigation water supply
ⓘ
municipal water supply ⓘ |
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: Monticello Dam Description of subject: Monticello Dam is a large concrete arch dam in Napa County, California, that creates Lake Berryessa and provides water storage, flood control, and hydroelectric power.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.