St. Lawrence Estuary

With water flowing out from the Great Lakes, the largest source of freshwater in the world, it’s little wonder the St. Lawrence maritime estuary (a place where fresh and saltwater mix) is one of the largest and deepest estuaries in the world. Freshwater increasingly mixes with saltwater for nearly 250 km, from Île d’Orléans, near Quebec City, to Pointe-des-Monts, northeast of Baie Comeau on the St. Lawrence River’s north shore.

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