Catskill-Delaware Watershed
E116241
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Catskill–Delaware watershed | 2 |
| Catskill Mountains watershed | 1 |
| Catskill watershed | 1 |
| Catskill-Delaware Watershed canonical | 1 |
| Catskill–Delaware watershed system | 1 |
| New York City upstate watershed lands | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T798263 — 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: Catskill-Delaware Watershed Context triple: [Catskill Mountains, partOf, Catskill-Delaware Watershed]
-
A.
Esopus Creek
Esopus Creek is a scenic stream in New York’s Catskill Mountains known for trout fishing, recreation, and its role in the New York City water supply system.
-
B.
Raritan River
The Raritan River is a major river in central New Jersey that flows eastward into Raritan Bay and serves as an important natural and historical waterway for the region.
-
C.
Mystic River watershed
The Mystic River watershed is a drainage basin in the Greater Boston area of Massachusetts that collects water from numerous rivers and streams before emptying into Boston Harbor.
-
D.
Delaware River
The Delaware River is a major waterway in the northeastern United States that forms part of the borders of several states and flows past major cities including Philadelphia before emptying into the Delaware Bay.
-
E.
Rondout Creek
Rondout Creek is a significant stream in southeastern New York that flows through the Catskill region and the city of Kingston before joining the Hudson River.
- 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: Catskill-Delaware Watershed Target entity description: The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
-
A.
Esopus Creek
Esopus Creek is a scenic stream in New York’s Catskill Mountains known for trout fishing, recreation, and its role in the New York City water supply system.
-
B.
Raritan River
The Raritan River is a major river in central New Jersey that flows eastward into Raritan Bay and serves as an important natural and historical waterway for the region.
-
C.
Mystic River watershed
The Mystic River watershed is a drainage basin in the Greater Boston area of Massachusetts that collects water from numerous rivers and streams before emptying into Boston Harbor.
-
D.
Delaware River
The Delaware River is a major waterway in the northeastern United States that forms part of the borders of several states and flows past major cities including Philadelphia before emptying into the Delaware Bay.
-
E.
Rondout Creek
Rondout Creek is a significant stream in southeastern New York that flows through the Catskill region and the city of Kingston before joining the Hudson River.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
drinking water watershed
ⓘ
protected watershed ⓘ surface water supply system ⓘ |
| associatedWith |
Catskill Park
ⓘ
Delaware County, New York ⓘ Greene County, New York NERFINISHED ⓘ Sullivan County, New York NERFINISHED ⓘ Ulster County ⓘ
surface form:
Ulster County, New York
|
| beneficiary |
New York City residents
ⓘ
downstate New York communities ⓘ |
| connectedTo |
Catskill Aqueduct
ⓘ
Delaware Aqueduct ⓘ |
| contains |
Ashokan Reservoir
ⓘ
Cannonsville Reservoir ⓘ Neversink Reservoir ⓘ Pepacton Reservoir ⓘ Rondout Reservoir ⓘ Schoharie Reservoir ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| ecologicalRole | habitat for forest and aquatic species ⓘ |
| environmentalConcern |
land development pressure
ⓘ
nonpoint source pollution ⓘ nutrient runoff ⓘ pathogen contamination risk ⓘ |
| governedBy |
New York State environmental regulations
ⓘ
federal Safe Drinking Water Act requirements ⓘ |
| hasFeature |
agricultural best management practices
ⓘ
conservation easements ⓘ land use controls ⓘ watershed protection programs ⓘ |
| landOwnership | mix of public and private lands ⓘ |
| locatedIn |
New York
ⓘ
surface form:
New York State
southeastern New York ⓘ |
| managedBy | New York City Department of Environmental Protection ⓘ |
| managedThrough | watershed partnership programs ⓘ |
| partOf | New York City water supply system ⓘ |
| primaryUse | municipal water supply ⓘ |
| protectedFor |
drinking water quality
ⓘ
public health ⓘ |
| purpose | to provide high-quality drinking water without filtration ⓘ |
| regulatoryStatus | Filtration Avoidance Determination system ⓘ |
| suppliesWaterTo | New York City ⓘ |
| supportsActivity |
recreational fishing (regulated)
ⓘ
regulated boating on some reservoirs ⓘ |
| waterDeliveryMethod | gravity-fed aqueduct system ⓘ |
| waterSource |
Catskill Mountains
ⓘ
Delaware River watershed ⓘ
surface form:
Delaware River basin
|
| waterType | unfiltered drinking water ⓘ |
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: Catskill-Delaware Watershed Description of subject: The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Catskill–Delaware watershed
this entity surface form:
New York City upstate watershed lands
this entity surface form:
Catskill–Delaware watershed
this entity surface form:
Catskill Mountains watershed
this entity surface form:
Catskill watershed
this entity surface form:
Catskill–Delaware watershed system