Saint Lawrence Seaway Development Corporation

E4537

United States federal agency government corporation

The Saint Lawrence Seaway Development Corporation is a U.S. federal agency responsible for operating and maintaining the American portion of the St. Lawrence Seaway, a key commercial shipping route connecting the Great Lakes to the Atlantic Ocean.

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

All labels observed (3)

Label	Occurrences
Saint Lawrence Seaway Development Corporation canonical	8
Great Lakes St. Lawrence Seaway Development Corporation	2
U.S.–Canada maritime trade corridor	1

How this entity was disambiguated

This entity first appeared as the object of triple T30688 — 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: Saint Lawrence Seaway Development Corporation
Context triple: [United States Department of Transportation, oversees, Saint Lawrence Seaway Development Corporation]

A. Great Lakes Works
Great Lakes Works is a large integrated steel manufacturing plant in Michigan known for producing flat-rolled steel products for the automotive and other industries.
B. Tennessee Valley Authority
The Tennessee Valley Authority is a federally owned U.S. corporation created during the New Deal to provide regional economic development, flood control, and electricity generation in the Tennessee Valley.
C. U.S. Army Corps of Engineers
The U.S. Army Corps of Engineers is a federal agency within the U.S. Department of Defense responsible for designing, building, and maintaining military and civil engineering projects such as dams, waterways, and infrastructure.
D. Erie Canal
The Erie Canal is a historic man-made waterway in New York State that opened in 1825, linking the Great Lakes to the Atlantic Ocean and transforming U.S. commerce and westward expansion.
E. Port of New York and New Jersey
The Port of New York and New Jersey is the largest seaport on the U.S. East Coast and a major global shipping and transportation hub serving the New York metropolitan area.
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: Saint Lawrence Seaway Development Corporation
Target entity description: The Saint Lawrence Seaway Development Corporation is a U.S. federal agency responsible for operating and maintaining the American portion of the St. Lawrence Seaway, a key commercial shipping route connecting the Great Lakes to the Atlantic Ocean.

A. Great Lakes Works
Great Lakes Works is a large integrated steel manufacturing plant in Michigan known for producing flat-rolled steel products for the automotive and other industries.
B. Tennessee Valley Authority
The Tennessee Valley Authority is a federally owned U.S. corporation created during the New Deal to provide regional economic development, flood control, and electricity generation in the Tennessee Valley.
C. U.S. Army Corps of Engineers
The U.S. Army Corps of Engineers is a federal agency within the U.S. Department of Defense responsible for designing, building, and maintaining military and civil engineering projects such as dams, waterways, and infrastructure.
D. Erie Canal
The Erie Canal is a historic man-made waterway in New York State that opened in 1825, linking the Great Lakes to the Atlantic Ocean and transforming U.S. commerce and westward expansion.
E. Port of New York and New Jersey
The Port of New York and New Jersey is the largest seaport on the U.S. East Coast and a major global shipping and transportation hub serving the New York metropolitan area.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	United States federal agency ⓘ government corporation ⓘ
appliesToJurisdiction	United States of America ⓘ surface form: United States
connectsThroughOperations	Atlantic Ocean ⓘ Great Lakes–St. Lawrence system ⓘ surface form: Great Lakes
cooperatesWith	Canadian federal agencies responsible for the Saint Lawrence Seaway ⓘ St. Lawrence Seaway Management Corporation ⓘ
country	United States of America ⓘ surface form: United States
foundedBy	United States government ⓘ surface form: Government of the United States
governedBy	United States federal law ⓘ
hasAbbreviation	SLSDC ⓘ
hasActivity	channel maintenance ⓘ environmental stewardship related to the Seaway ⓘ ice management coordination ⓘ lock operation ⓘ navigation aid management ⓘ trade facilitation ⓘ
hasEconomicRole	facilitating North American inland waterway trade ⓘ supporting export and import of bulk commodities via the Great Lakes ⓘ
hasJurisdictionOver	American portion of the Saint Lawrence Seaway ⓘ
hasMission	to operate and maintain a safe, reliable, and efficient waterway for commercial shipping ⓘ
hasOfficialLanguage	English ⓘ
headquartersLocation	Washington, D.C. ⓘ
industry	shipping ⓘ water transportation ⓘ
isSubjectOf	United States federal transportation policy ⓘ
legalForm	federal government corporation ⓘ
locatedInAdministrativeTerritorialEntity	District of Columbia ⓘ
operatesInSector	infrastructure management ⓘ maritime transportation ⓘ transportation ⓘ
ownedBy	United States government ⓘ surface form: Government of the United States
parentAgency	United States Department of Transportation ⓘ
partOf	Great Lakes–St. Lawrence Seaway System governance structure ⓘ United States Department of Transportation ⓘ
publicOrPrivate	public ⓘ
regulates	commercial vessel traffic on the U.S. portion of the Saint Lawrence Seaway ⓘ
responsibleFor	infrastructure improvements on the U.S. portion of the Saint Lawrence Seaway ⓘ maintenance of the U.S. portion of the Saint Lawrence Seaway ⓘ operation of the U.S. portion of the Saint Lawrence Seaway ⓘ safety of navigation on the U.S. portion of the Saint Lawrence Seaway ⓘ
serviceArea	Great Lakes ⓘ surface form: Great Lakes region Saint Lawrence River ⓘ Saint Lawrence Seaway Development Corporation self-linksurface differs ⓘ surface form: U.S.–Canada maritime trade corridor
usesWaterway	Great Lakes–St. Lawrence system ⓘ surface form: Great Lakes–St. Lawrence Seaway System Great Lakes–St. Lawrence system ⓘ surface form: Saint Lawrence Seaway

How these facts were elicited

Referenced by (11)

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

United States Department of Transportation → oversees → Saint Lawrence Seaway Development Corporation ⓘ

DOT → oversees → Saint Lawrence Seaway Development Corporation ⓘ

subject surface form: United States Department of Transportation

Saint Lawrence Seaway Development Corporation → serviceArea → Saint Lawrence Seaway Development Corporation self-linksurface differs ⓘ

this entity surface form: U.S.–Canada maritime trade corridor

SecDOT → oversees → Saint Lawrence Seaway Development Corporation ⓘ

this entity surface form: Great Lakes St. Lawrence Seaway Development Corporation

SecDOT → oversees → Saint Lawrence Seaway Development Corporation ⓘ

St. Lawrence Seaway Management Corporation → collaboratesWith → Saint Lawrence Seaway Development Corporation ⓘ

SLSDC → fullName → Saint Lawrence Seaway Development Corporation ⓘ

Seaway International Bridge → maintainedBy → Saint Lawrence Seaway Development Corporation ⓘ

Office of the Secretary of Transportation → oversees → Saint Lawrence Seaway Development Corporation ⓘ