Skip to main content
U.S. flag

An official website of the United States government

Great Lakes St. Lawrence Seaway Tonnage

Published by Bureau of Transportation Statistics | Department of Transportation | Catalog Last Checked: August 02, 2026 at 11:27 PM | Dataset Last Updated: April 27, 2026
The Great Lakes St. Lawrence Seaway’s navigation season generally begins in late March and closes in late December. Opening and closing dates vary from year to year.

Find Related Datasets

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov