Montreal & Lower St. Lawrence Seaway: Located in Quebec
Quebec. Both Montreal and the downstream St. Lawrence Seaway corridor sit in Canada's largest province.
Montreal
- Population: 1.8 M (city), 4.3 M (metro) — 2nd largest in Canada
- Island at confluence of St. Lawrence & Ottawa Rivers
- Inland port: 2,000 km from Atlantic; Seawaymax lock limit
Lower Seaway (Montreal → Lake Ontario)
| Lock | Location | Lift (m) |
|---|
| St. Lambert | Montreal (South Shore) | 4.6 |
| Côte Ste. Catherine | Montreal | 9.1 |
| Beauharnois (2 locks) | Beauharnois, QC | 12.2 each |
| Snell | Massena, NY / Cornwall, ON | 13.7 |
| Eisenhower | Massena, NY | 11.6 |
| Iroquois | Iroquois, ON | 1.8 |
Total lift: 58 m (190 ft) from Montreal harbor to Lake Ontario.
Why Quebec?
- St. Lawrence is Quebec's historic lifeline — exploration, settlement, trade, hydro
- Seaway management: St. Lawrence Seaway Management Corp (Canada) + Great Lakes St. Lawrence Seaway Development Corp (US)
- Hydro Québec generates >40% of province's power from St. Lawrence basin
Montreal is the fulcrum where ocean ships become lake ships—and it all happens in Quebec.
Wanderlust World