U.S Department of Transportation
Great Lakes St. Lawrence Seaway Performance
This dataset contains monthly performance statistics for the Great Lakes-St. Lawrence Seaway system.
- CSV
- JSON
- XSL
Updated Oct 25, 2026
Datasets
3 datasets
U.S Department of Transportation
Great Lakes St. Lawrence Seaway Vessel Transits
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.
Updated Oct 25, 2026
U.S Department of Transportation
Great Lakes St. Lawrence Seaway - U.S. Sector Reliability Rate
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.
Updated Oct 25, 2026