Hoover Reservoir
E269563
Hoover Reservoir is a large man-made lake in central Ohio that serves as a primary drinking water source and popular recreation area for the Columbus region.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hoover Reservoir canonical | 9 |
| O'Shaughnessy Reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2320247 — 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: Hoover Reservoir Context triple: [Delaware County, Ohio, hasWaterBody, Hoover Reservoir]
-
A.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
-
B.
John Martin Reservoir
John Martin Reservoir is a large man-made lake and state park in southeastern Colorado known for its water recreation, birdwatching, and role in regional water storage and flood control.
-
C.
Greenfield Reservoir
Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
-
D.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
-
E.
Amawalk Reservoir
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
- 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: Hoover Reservoir Target entity description: Hoover Reservoir is a large man-made lake in central Ohio that serves as a primary drinking water source and popular recreation area for the Columbus region.
-
A.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
-
B.
John Martin Reservoir
John Martin Reservoir is a large man-made lake and state park in southeastern Colorado known for its water recreation, birdwatching, and role in regional water storage and flood control.
-
C.
Greenfield Reservoir
Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
-
D.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
-
E.
Amawalk Reservoir
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| completedIn | 1955 ⓘ |
| constructionBegan | 1950s ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| createdBy | impoundment of Big Walnut Creek ⓘ |
| formedBy | Hoover Dam (Ohio) ⓘ |
| hasFacility |
Hoover Reservoir Park
ⓘ
boat ramps ⓘ fishing piers ⓘ picnic areas ⓘ trails ⓘ |
| hasRestriction |
horsepower limits for motorboats
ⓘ
no gasoline-powered personal watercraft ⓘ no swimming allowed ⓘ |
| knownFor |
bald eagle sightings
ⓘ
bird habitat ⓘ sailing regattas ⓘ |
| length | approximately 5 miles ⓘ |
| locatedIn |
Franklin County, Ohio
ⓘ
Ohio ⓘ |
| locatedInRegion |
central Ohio
ⓘ
linked to:
Central Ohio
|
| locatedNear |
Columbus, Ohio
ⓘ
Gahanna, Ohio ⓘ Westerville, Ohio ⓘ |
| managedBy |
City of Columbus Department of Public Utilities
ⓘ
linked to:
City of Columbus government
|
| maximumDepth | approximately 60 feet ⓘ |
| nearbyCity |
Columbus, Ohio
ⓘ
linked to:
Columbus
Gahanna, Ohio ⓘ Westerville, Ohio ⓘ |
| operator |
City of Columbus
ⓘ
linked to:
Columbus, Ohio
|
| partOf |
Columbus public water system
ⓘ
linked to:
Columbus, Ohio
|
| primaryFunction | primary drinking water source for Columbus region ⓘ |
| shoreLength | approximately 45 miles ⓘ |
| surfaceArea | approximately 4,700 acres ⓘ |
| use |
birdwatching
ⓘ
boating ⓘ canoeing ⓘ drinking water source ⓘ fishing ⓘ flood control ⓘ hiking ⓘ kayaking ⓘ municipal water supply ⓘ recreation ⓘ sailing ⓘ wildlife observation ⓘ |
| watercourse | Big Walnut Creek ⓘ |
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: Hoover Reservoir Description of subject: Hoover Reservoir is a large man-made lake in central Ohio that serves as a primary drinking water source and popular recreation area for the Columbus region.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Hoover Reservoir