Barely 15 000 years old, the St. Lawrence River is the world's youngest seaway! When out in the middle of the river, you feel you are at sea, and when close to shore, the physical traces of this waterway's birth and evolution can be read on its rocky shoreline. The St. Lawrence originates in the Great Lakes, but the waters from several other rivers that flow into the seaway contribute to its powerful current. Learn about the fascinating natural phenomena that create the magic of the St. Lawrence River.


Things are splishing and splashing in the St. Lawrence River, whose waters are fresh until a little past Île d’Orléans, located near Quebec City. But the ocean's tides and currents have their grain of salt to add. The river gradually transforms into a sea the more you travel east. The beautiful islands in the St. Lawrence, buffeted by wind and storm, weave an enchanting spell that beckons visitors to explore them in order to unravel their many mysteries.

The water of the rivers
Islands
Currents and tides
Wind and storms
Out in the Open Water, St. Lawrence River