An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
In accordance with the Chief Financial Officers Act of 1990 and the Comptroller General's Government Auditing Standards, the Great Lakes St. Lawrence Seaway Development Corporation (GLS) annually presents a management report and financial audit of the organization. The Fiscal Year 2023...
Check out some of these unique videos capturing the unique history of the St. Lawrence Seaway, its vitality to the North American economy, and the operation of Eisenhower and Snell Locks in Massena, New York!
The St. Lawrence Seaway - "The Eighth Sea"Learn from Walter Cronkite...
Interested in vessels transiting the Great Lakes-St. Lawrence Seaway System? Try out these great resources!
Dial 315-769-2422 for today's transit times or visit the Seaway's Interactive Map of Vessels Currently in Transit!
The binational Great Lakes-St. Lawrence Seaway System website is an informative resource to learn more about the Seaway, including information about the commercial shipping, recreational boating, and navigating the Seaway!
Other Interesting Facts about the Great Lakes-St. Lawrence...
For use at home, at the office, or in the classroom, some amazing photographs of the St. Lawrence Seaway!
Responsible for the construction, operation, and maintenance of the part of the St. Lawrence Seaway between Montreal and Lake Erie that falls within the territorial limits of the United States, the mission of the GLS is fulfilled at its policy headquarters in Washington, D.C. and its...
The Great Lakes-St. Lawrence Seaway is a deep draft waterway extending 3,700 km (2,340 miles) from the Atlantic Ocean to the head of the Great Lakes, in the heart of North America. The St. Lawrence Seaway portion of the System extends from Montreal to mid-Lake Erie. Ranked as one of the...
Administration of the Great Lakes-St. Lawrence Seaway System is shared by the GLS and the St. Lawrence Seaway Management Corporation (SLSMC).
The SLSMC is a not-for-profit corporation responsible for the safe and efficient movement of marine traffic through the Canadian Seaway...