Lake Tappan
E868585
Lake Tappan is a large reservoir on the Hackensack River in New Jersey and New York, used primarily for drinking water supply and recreation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lake Tappan canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10520906 — 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: Lake Tappan Context triple: [Hackensack River watershed, containsWaterBody, Lake Tappan]
-
A.
Rippowam Lake
Rippowam Lake is a small freshwater lake located in the town of Lewisboro in Westchester County, New York, known for its scenic residential setting and local recreational use.
-
B.
Lake Ronkonkoma
Lake Ronkonkoma is a large natural lake and popular recreational spot in central Long Island, New York, surrounded by parks, beaches, and residential communities.
-
C.
Van Cortlandt Lake
Van Cortlandt Lake is a man-made freshwater lake in the Bronx, New York City, known as a central natural feature and wildlife habitat within Van Cortlandt Park.
-
D.
Queensboro Lake
Queensboro Lake is a small scenic lake located within New York’s Harriman State Park, popular for outdoor recreation such as hiking and fishing.
-
E.
Lake George
Lake George is a small, shallow freshwater lake in western Uganda, known for its rich biodiversity and role in the African Great Lakes 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: Lake Tappan Target entity description: Lake Tappan is a large reservoir on the Hackensack River in New Jersey and New York, used primarily for drinking water supply and recreation.
-
A.
Rippowam Lake
Rippowam Lake is a small freshwater lake located in the town of Lewisboro in Westchester County, New York, known for its scenic residential setting and local recreational use.
-
B.
Lake Ronkonkoma
Lake Ronkonkoma is a large natural lake and popular recreational spot in central Long Island, New York, surrounded by parks, beaches, and residential communities.
-
C.
Van Cortlandt Lake
Van Cortlandt Lake is a man-made freshwater lake in the Bronx, New York City, known as a central natural feature and wildlife habitat within Van Cortlandt Park.
-
D.
Queensboro Lake
Queensboro Lake is a small scenic lake located within New York’s Harriman State Park, popular for outdoor recreation such as hiking and fishing.
-
E.
Lake George
Lake George is a small, shallow freshwater lake in western Uganda, known for its rich biodiversity and role in the African Great Lakes system.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| accessRegulation | restricted shoreline access in many areas ⓘ |
| basinCountry | United States of America ⓘ |
| country | United States of America ⓘ |
| createdBy | construction of Lake Tappan Dam ⓘ |
| damCrosses | Hackensack River NERFINISHED ⓘ |
| elevationAboveSeaLevel |
approximately 22 feet
ⓘ
approximately 7 meters ⓘ |
| fishSpecies |
catfish
ⓘ
largemouth bass ⓘ perch ⓘ smallmouth bass ⓘ sunfish ⓘ |
| formerlyOperatedBy | United Water NERFINISHED ⓘ |
| hasShoreLength |
approximately 12 kilometers
ⓘ
approximately 7.5 miles ⓘ |
| locatedIn |
Bergen County, New Jersey
NERFINISHED
ⓘ
New Jersey, United States ⓘ
surface form:
New Jersey
New York NERFINISHED ⓘ Old Tappan, New Jersey NERFINISHED ⓘ Orangetown, New York NERFINISHED ⓘ River Vale, New Jersey NERFINISHED ⓘ Rockland County, New York NERFINISHED ⓘ |
| locatedNear |
Harrington Park, New Jersey
NERFINISHED
ⓘ
Northvale, New Jersey NERFINISHED ⓘ Norwood, New Jersey NERFINISHED ⓘ Tappan, New York NERFINISHED ⓘ |
| locatedOn | Hackensack River NERFINISHED ⓘ |
| maximumDepth |
approximately 13 meters
ⓘ
approximately 43 feet ⓘ |
| operator |
Veolia North America
NERFINISHED
ⓘ
Veolia Water New Jersey NERFINISHED ⓘ |
| partOf |
Hackensack River water supply system
NERFINISHED
ⓘ
Hackensack River watershed NERFINISHED ⓘ |
| primaryFunction | public water supply ⓘ |
| recreationalActivity |
birdwatching
ⓘ
boating ⓘ fishing ⓘ |
| region |
New York metropolitan area
NERFINISHED
ⓘ
Northeastern United States ⓘ |
| surfaceArea |
approximately 1,255 acres
ⓘ
approximately 5.1 square kilometers ⓘ |
| use |
drinking water supply
ⓘ
flood control ⓘ recreation ⓘ |
| watercourse | Hackensack River NERFINISHED ⓘ |
| waterUseRestriction | swimming generally prohibited ⓘ |
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: Lake Tappan Description of subject: Lake Tappan is a large reservoir on the Hackensack River in New Jersey and New York, used primarily for drinking water supply and recreation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.