St. Lawrence River drainage basin

E589525

drainage basin river basin watershed

The St. Lawrence River drainage basin is the vast watershed in North America that collects and channels water from the Great Lakes and numerous tributary rivers into the St. Lawrence River and ultimately the Atlantic Ocean.

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All labels observed (11)

Label	Occurrences
Saint Lawrence River basin	18
St. Lawrence River basin	17
St. Lawrence River watershed	14
Saint Lawrence River drainage basin	10
Saint Lawrence River watershed	9
St. Lawrence River drainage basin canonical	9
Saint Lawrence River system	6
St. Lawrence River Basin	4
Côte-Nord–du-Saint-Laurent hydrological region	1
Gulf of St. Lawrence watershed	1
Lake Champlain–Richelieu River–Saint Lawrence River basin	1

How this entity was disambiguated

This entity first appeared as the object of triple T6248612 — 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: St. Lawrence River drainage basin
Context triple: [Trent River, partOf, St. Lawrence River drainage basin]

A. Lake Ontario drainage basin
The Lake Ontario drainage basin is the extensive watershed area that collects and channels water from surrounding lakes, rivers, and land into Lake Ontario, one of North America’s Great Lakes.
B. St. Lawrence Valley
The St. Lawrence Valley is a major lowland region along the St. Lawrence River in Canada and the northeastern United States, known for its fertile plains, dense population, and role as a key transportation and economic corridor.
C. Hudson Bay drainage basin
The Hudson Bay drainage basin is a vast watershed in northern North America that collects runoff from numerous rivers and lakes across Canada and parts of the United States, all ultimately flowing into Hudson Bay.
D. Ottawa River watershed
The Ottawa River watershed is the drainage basin that collects and channels water from a vast area of eastern Ontario and western Quebec into the Ottawa River, influencing regional ecosystems, water resources, and communities.
E. Great Lakes–St. Lawrence system
The Great Lakes–St. Lawrence system is a vast interconnected chain of freshwater lakes and the St. Lawrence River that forms one of the world’s largest inland waterways, linking the interior of North America to the Atlantic Ocean.
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: St. Lawrence River drainage basin
Target entity description: The St. Lawrence River drainage basin is the vast watershed in North America that collects and channels water from the Great Lakes and numerous tributary rivers into the St. Lawrence River and ultimately the Atlantic Ocean.

A. Lake Ontario drainage basin
The Lake Ontario drainage basin is the extensive watershed area that collects and channels water from surrounding lakes, rivers, and land into Lake Ontario, one of North America’s Great Lakes.
B. St. Lawrence Valley
The St. Lawrence Valley is a major lowland region along the St. Lawrence River in Canada and the northeastern United States, known for its fertile plains, dense population, and role as a key transportation and economic corridor.
C. Hudson Bay drainage basin
The Hudson Bay drainage basin is a vast watershed in northern North America that collects runoff from numerous rivers and lakes across Canada and parts of the United States, all ultimately flowing into Hudson Bay.
D. Ottawa River watershed
The Ottawa River watershed is the drainage basin that collects and channels water from a vast area of eastern Ontario and western Quebec into the Ottawa River, influencing regional ecosystems, water resources, and communities.
E. Great Lakes–St. Lawrence system
The Great Lakes–St. Lawrence system is a vast interconnected chain of freshwater lakes and the St. Lawrence River that forms one of the world’s largest inland waterways, linking the interior of North America to the Atlantic Ocean.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	drainage basin ⓘ river basin ⓘ watershed ⓘ
containsWaterBody	Lake Erie ⓘ Lake Huron ⓘ Lake Michigan ⓘ Lake Ontario ⓘ Lake Superior ⓘ
continent	North America ⓘ
country	Canada ⓘ United States ⓘ linked to: United States of America
drainageDirection	northeast ⓘ
drainsInto	Atlantic Ocean ⓘ St. Lawrence River ⓘ linked to: Saint Lawrence River
hydrologicalSystem	Great Lakes–St. Lawrence River system ⓘ linked to: Great Lakes–St. Lawrence system
includes	Great Lakes Basin ⓘ Lake Erie basin ⓘ linked to: Lake Erie watershed Lake Huron basin ⓘ linked to: Lake Huron watershed Lake Michigan basin ⓘ linked to: Lake Michigan watershed Lake Ontario basin ⓘ linked to: Lake Ontario drainage basin Lake Superior basin ⓘ linked to: Lake Superior Basin
majorRiver	Chaudière River ⓘ Detroit River ⓘ Niagara River ⓘ Ottawa River ⓘ Richelieu River ⓘ Saguenay River ⓘ Saint-François River ⓘ Saint-Maurice River ⓘ St. Clair River ⓘ St. Lawrence River ⓘ linked to: Saint Lawrence River Trent River ⓘ
oceanBasin	North Atlantic Ocean ⓘ linked to: North Atlantic
outlet	Gulf of St. Lawrence ⓘ
partOf	Great Lakes–St. Lawrence watershed ⓘ linked to: Great Lakes–St. Lawrence system
primaryOutflow	St. Lawrence River ⓘ linked to: Saint Lawrence River
receivesRunoffFrom	Great Lakes region ⓘ parts of the Appalachian Mountains ⓘ parts of the Canadian Shield ⓘ
subnationalRegion	Illinois ⓘ Indiana ⓘ Michigan ⓘ Minnesota ⓘ New York ⓘ Ohio ⓘ Ontario ⓘ Ontario Peninsula ⓘ Pennsylvania ⓘ Quebec ⓘ linked to: Quebec, Canada Vermont ⓘ Wisconsin ⓘ