Ballville Dam site
E441746
The Ballville Dam site is a former dam location on the Sandusky River in Fremont, Ohio, now known for its removal and associated environmental restoration efforts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ballville Dam site canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4474991 — 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: Ballville Dam site Context triple: [Fremont, Ohio, hasRiverFeature, Ballville Dam site]
-
A.
Keenleyside Dam
Keenleyside Dam is a major hydroelectric and flood-control dam on the Columbia River in British Columbia, Canada, forming part of the region’s large transboundary water management system.
-
B.
Cluny Dam
Cluny Dam is a hydroelectric dam on Tasmania’s Derwent River that forms part of the state’s power generation and water management system.
-
C.
Glennies Creek Dam
Glennies Creek Dam is a major water storage and flood mitigation dam on Glennies Creek in New South Wales, Australia, supporting irrigation, town water supply, and environmental flows.
-
D.
Melton Hill Dam
Melton Hill Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in East Tennessee, forming Melton Hill Lake and providing power generation, recreation, and flood control for the Knoxville area.
-
E.
Nimbus Dam
Nimbus Dam is a concrete gravity dam on the American River in California that forms Lake Natoma and helps regulate water flow, provide hydroelectric power, and support regional water supply and recreation.
- 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: Ballville Dam site Target entity description: The Ballville Dam site is a former dam location on the Sandusky River in Fremont, Ohio, now known for its removal and associated environmental restoration efforts.
-
A.
Keenleyside Dam
Keenleyside Dam is a major hydroelectric and flood-control dam on the Columbia River in British Columbia, Canada, forming part of the region’s large transboundary water management system.
-
B.
Cluny Dam
Cluny Dam is a hydroelectric dam on Tasmania’s Derwent River that forms part of the state’s power generation and water management system.
-
C.
Glennies Creek Dam
Glennies Creek Dam is a major water storage and flood mitigation dam on Glennies Creek in New South Wales, Australia, supporting irrigation, town water supply, and environmental flows.
-
D.
Melton Hill Dam
Melton Hill Dam is a Tennessee Valley Authority hydroelectric dam on the Clinch River in East Tennessee, forming Melton Hill Lake and providing power generation, recreation, and flood control for the Knoxville area.
-
E.
Nimbus Dam
Nimbus Dam is a concrete gravity dam on the American River in California that forms Lake Natoma and helps regulate water flow, provide hydroelectric power, and support regional water supply and recreation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | former dam site ⓘ |
| associatedWith |
City of Fremont, Ohio
NERFINISHED
ⓘ
Ohio Department of Natural Resources NERFINISHED ⓘ environmental consulting firms ⓘ fisheries biologists ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Sandusky County, Ohio NERFINISHED ⓘ |
| currentCondition |
absence of dam structure
ⓘ
free-flowing river reach ⓘ |
| ecologicalGoal |
enhance fish migration
ⓘ
improve aquatic habitat ⓘ restore natural flow regime ⓘ |
| environmentalIssue |
altered river flow
ⓘ
fish migration barrier ⓘ sediment accumulation ⓘ |
| formerlyContained | Ballville Dam NERFINISHED ⓘ |
| hasCoordinateRegion | northwestern Ohio NERFINISHED ⓘ |
| historicalUse |
hydropower generation
ⓘ
municipal water supply intake ⓘ |
| hydrologicFeature |
free-flowing reach (current)
ⓘ
impounded reach (historical) ⓘ |
| impact |
altered local recreation patterns
ⓘ
changed sediment transport dynamics ⓘ improved fish habitat ⓘ restored river connectivity ⓘ |
| knownFor |
dam removal
ⓘ
fish passage improvement ⓘ river restoration ⓘ sediment management ⓘ |
| locatedIn | Fremont, Ohio NERFINISHED ⓘ |
| locatedOnRiver | Sandusky River NERFINISHED ⓘ |
| managementAction |
bank stabilization in selected areas
ⓘ
dam removal and site restoration ⓘ vegetation re-establishment along riparian zone ⓘ |
| nearCity | Fremont, Ohio NERFINISHED ⓘ |
| partOf | Sandusky River watershed NERFINISHED ⓘ |
| postRemovalUse |
recreational access
ⓘ
riverine habitat ⓘ |
| projectType |
dam removal project
ⓘ
river restoration project ⓘ |
| relatedTo |
Ballville Dam
NERFINISHED
ⓘ
Sandusky River restoration ⓘ |
| state | Ohio ⓘ |
| subjectOf |
environmental impact studies
ⓘ
fish community monitoring ⓘ public policy discussions on dam removal ⓘ sediment contamination assessments ⓘ |
| waterbodyType | river reach ⓘ |
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: Ballville Dam site Description of subject: The Ballville Dam site is a former dam location on the Sandusky River in Fremont, Ohio, now known for its removal and associated environmental restoration efforts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Fremont, Ohio