South Branch Patapsco River

E297579

headwater stream river

The South Branch Patapsco River is a principal headwater stream of Maryland’s Patapsco River, flowing through rural and forested areas before contributing to the river system that ultimately feeds into the Chesapeake Bay.

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

All labels observed (3)

Label	Occurrences
South Branch Patapsco River canonical	1
Tiber River (Ellicott City)	1
Tiber River (Maryland)	1

How this entity was disambiguated

This entity first appeared as the object of triple T1972371 — 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: South Branch Patapsco River
Context triple: [Patapsco River, hasMajorTributary, South Branch Patapsco River]

A. North Branch Patapsco River
The North Branch Patapsco River is a principal headwater stream of the Patapsco River in central Maryland, contributing significantly to the river system that ultimately flows into the Chesapeake Bay.
B. Patapsco River
The Patapsco River is a major waterway in central Maryland that flows into the Chesapeake Bay and forms the harbor of Baltimore.
C. North Branch Potomac River
The North Branch Potomac River is the upper, more remote headwaters section of the Potomac River, flowing along the border of Maryland and West Virginia and supplying a major portion of the Potomac’s overall drainage.
D. South Branch Potomac River
The South Branch Potomac River is a major headwater stream of the Potomac River that flows through the Appalachian region of West Virginia and Virginia, known for its scenic valleys, outdoor recreation, and role in the Chesapeake Bay watershed.
E. South Fork South Branch Potomac River
The South Fork South Branch Potomac River is a significant headwater stream in West Virginia that drains a largely rural, mountainous watershed before joining the South Branch of the Potomac 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: South Branch Patapsco River
Target entity description: The South Branch Patapsco River is a principal headwater stream of Maryland’s Patapsco River, flowing through rural and forested areas before contributing to the river system that ultimately feeds into the Chesapeake Bay.

A. North Branch Patapsco River
The North Branch Patapsco River is a principal headwater stream of the Patapsco River in central Maryland, contributing significantly to the river system that ultimately flows into the Chesapeake Bay.
B. Patapsco River
The Patapsco River is a major waterway in central Maryland that flows into the Chesapeake Bay and forms the harbor of Baltimore.
C. North Branch Potomac River
The North Branch Potomac River is the upper, more remote headwaters section of the Potomac River, flowing along the border of Maryland and West Virginia and supplying a major portion of the Potomac’s overall drainage.
D. South Branch Potomac River
The South Branch Potomac River is a major headwater stream of the Potomac River that flows through the Appalachian region of West Virginia and Virginia, known for its scenic valleys, outdoor recreation, and role in the Chesapeake Bay watershed.
E. South Fork South Branch Potomac River
The South Fork South Branch Potomac River is a significant headwater stream in West Virginia that drains a largely rural, mountainous watershed before joining the South Branch of the Potomac River.
F. None of above. chosen

Statements (30)

Predicate	Object
instanceOf	headwater stream ⓘ river ⓘ
basinCountry	United States ⓘ linked to: United States of America
contributesTo	Chesapeake Bay ⓘ
country	United States ⓘ linked to: United States of America
drainageBasin	Patapsco River basin ⓘ linked to: Patapsco River
environment	forested areas ⓘ rural areas ⓘ
flowsInto	Patapsco River ⓘ
flowsThrough	Baltimore County, Maryland ⓘ linked to: Baltimore County Carroll County, Maryland ⓘ Howard County, Maryland ⓘ linked to: Howard County
hasEcologicalRole	contributes freshwater inflow to Chesapeake Bay ⓘ provides habitat for aquatic species ⓘ
hasUse	fishing ⓘ hiking access along banks ⓘ recreation ⓘ wildlife habitat ⓘ
isHeadwaterOf	Patapsco River main stem ⓘ linked to: Patapsco River
locatedIn	Piedmont region of Maryland ⓘ linked to: Piedmont region
mouthOf	Patapsco River ⓘ
partOf	Patapsco River ⓘ Patapsco River watershed ⓘ linked to: Patapsco River
region	Mid-Atlantic United States ⓘ linked to: Mid-Atlantic states
riverSystem	Chesapeake Bay watershed ⓘ linked to: Chesapeake Bay Patapsco River system ⓘ linked to: Patapsco River
state	Maryland ⓘ
tributaryOf	Patapsco River ⓘ
watercourseType	freshwater stream ⓘ
watershed	Chesapeake Bay ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Patapsco River → hasMajorTributary → South Branch Patapsco River ⓘ

Ellicott City → locatedOnWaterway → Tiber River (Maryland) ⓘ

linked to: South Branch Patapsco River

2016 Ellicott City flood → riverOrStreamInvolved → Tiber River (Ellicott City) ⓘ