Catskill–Delaware water supply system

E723948

municipal water supply system

The Catskill–Delaware water supply system is a major network of reservoirs, aqueducts, and related infrastructure that delivers the majority of New York City’s high-quality drinking water from the Catskill Mountains and Delaware River watershed.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (14)

Label	Occurrences
Catskill water supply system	6
New York City Delaware System reservoirs	3
New York City Catskill water supply system	2
New York City Catskill–Delaware water supply system	2
Catskill and Delaware aqueduct system (general source region)	1
Catskill-Delaware water supply system	1
Catskill-Delaware water system	1
Catskill–Delaware water supply system canonical	1
Delaware System of NYC water supply	1
Delaware water supply system	1
New York City Catskill water system	1
New York City Delaware water system	1
New York City Department of Environmental Protection Catskill-Delaware system operations	1
New York City water supply Catskill–Delaware system	1

How this entity was disambiguated

This entity first appeared as the object of triple T8217390 — 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 water supply system
Context triple: [Kensico Dam, partOf, Catskill–Delaware water supply system]

A. Delaware Aqueduct
The Delaware Aqueduct is a historic 19th-century suspension aqueduct that carried the Delaware and Hudson Canal over the Delaware River and is now preserved as the oldest surviving wire suspension bridge in the United States.
B. Delaware Aqueduct
The Delaware Aqueduct is a major underground tunnel that transports drinking water from reservoirs in the Delaware River watershed to New York City, forming a critical component of the city’s water supply infrastructure.
C. Schoharie–Esopus water diversion system
The Schoharie–Esopus water diversion system is a key component of New York City's upstate water supply infrastructure that transfers water from the Schoharie Reservoir into the Esopus Creek watershed via tunnels and related facilities.
D. Catskill Aqueduct
The Catskill Aqueduct is a major component of New York City's water supply system, transporting drinking water from the Catskill Mountains to the city and its reservoirs.
E. Catskill system reservoirs
The Catskill system reservoirs are a network of large upstate New York water storage basins that form a major component of New York City’s drinking 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: Catskill–Delaware water supply system
Target entity description: The Catskill–Delaware water supply system is a major network of reservoirs, aqueducts, and related infrastructure that delivers the majority of New York City’s high-quality drinking water from the Catskill Mountains and Delaware River watershed.

A. Delaware Aqueduct
The Delaware Aqueduct is a historic 19th-century suspension aqueduct that carried the Delaware and Hudson Canal over the Delaware River and is now preserved as the oldest surviving wire suspension bridge in the United States.
B. Delaware Aqueduct
The Delaware Aqueduct is a major underground tunnel that transports drinking water from reservoirs in the Delaware River watershed to New York City, forming a critical component of the city’s water supply infrastructure.
C. Schoharie–Esopus water diversion system
The Schoharie–Esopus water diversion system is a key component of New York City's upstate water supply infrastructure that transfers water from the Schoharie Reservoir into the Esopus Creek watershed via tunnels and related facilities.
D. Catskill Aqueduct
The Catskill Aqueduct is a major component of New York City's water supply system, transporting drinking water from the Catskill Mountains to the city and its reservoirs.
E. Catskill system reservoirs
The Catskill system reservoirs are a network of large upstate New York water storage basins that form a major component of New York City’s drinking water supply system.
F. None of above. chosen

Statements (45)

Predicate	Object
instanceOf	municipal water supply system ⓘ
beneficiary	New York City residents ⓘ some communities in upstate New York ⓘ
connectedTo	Croton water supply system ⓘ New York City distribution tunnels ⓘ
constructionStart	early 20th century ⓘ
country	United States ⓘ linked to: United States of America
designPrinciple	gravity flow with minimal pumping ⓘ
environmentalImpact	requires extensive watershed land protection ⓘ
hasPart	Ashokan Reservoir ⓘ Cannonsville Reservoir ⓘ Catskill Aqueduct ⓘ Delaware Aqueduct ⓘ Hillview Reservoir ⓘ Kensico Reservoir ⓘ Neversink Reservoir ⓘ Pepacton Reservoir ⓘ Rondout Reservoir ⓘ Schoharie Reservoir ⓘ Shandaken Tunnel ⓘ West Branch Reservoir ⓘ
infrastructureType	aqueducts ⓘ reservoirs ⓘ tunnels ⓘ water treatment facilities ⓘ
locatedIn	Catskill Park region ⓘ linked to: Catskill Park Delaware River basin ⓘ linked to: Delaware River watershed State of New York ⓘ linked to: New York State
manages	protected watershed lands ⓘ
notableFeature	long-distance gravity-fed conveyance ⓘ provides majority of New York City’s drinking water ⓘ
operator	New York City Department of Environmental Protection ⓘ
partOf	New York City water supply system ⓘ
primaryWaterUse	municipal drinking water supply ⓘ
purpose	delivery of high-quality drinking water to New York City ⓘ
regulator	New York State Department of Health ⓘ United States Environmental Protection Agency ⓘ
regulatoryStatus	Filtration Avoidance Determination under U.S. EPA rules ⓘ linked to: Filtration Avoidance Determination system
serves	New York City ⓘ
supplies	drinking water ⓘ
waterQuality	unfiltered surface water ⓘ
watershedProtectionProgram	New York City watershed protection program ⓘ
waterSourceRegion	Catskill Mountains ⓘ Delaware River watershed ⓘ
waterType	surface water ⓘ

How these facts were elicited