St. Lawrence River/Seaway

File:Map Canada political-geo.png

Map: Canada – geopolitical, Drawn and adapted by E Pluribus Anthony from Atlas of Canada, Edited by en:User:Heqs/en:User:Cogito ergo sumo to show disputed nature of Canada’s marine international boundary claims; see en:Canada-United_States_border#Remaining_boundary_disputes; further edited by Bosonic dressing to reflect agreed maritime boundary between Canada and Greenland/Denmark: see, Original uploader was E Pluribus Anthony at en.wikipedia Later versions were uploaded by AThing, Heqs, Cogito ergo sumo at en.wikipedia. Released into the public domain (by the author.

… The river constricts at Québec where a promontory commands the entire upper course. The military value of the site was appreciated long before European settlement began.

Past Québec the river divides to encircle Ile d’Orléans and steadily widens to 15 km at Cap-Tourmente, almost 25 km at Île-aux-Coudres. The water becomes brackish and tides are high. Near the mouth of the Saguenay River, the riverbed drops dramatically from 25 m to 350 m, forming a drowned valley in the lower estuary. The freshwater flow mingles with cold arctic saltwater. The town of Tadoussac sits on a terrace of sand and clay at the confluence, but the rugged Precambrian N shore is sparsely settled.

The S shore of the estuary, which forms a great curve towards Gaspé, is more open towards its hinterland, and major roads, including the Trans-Canada Highway, head inland from Rivière-du-Loup, Trois-Pistoles, Rimouski and Matane.

At Pointe-des-Monts, about 70 km E of Baie-Comeau and the mouth of the Manicouagan River, the N shore turns dramatically NNE for about 100 km to Sept-Îles, near the mouth of the Moisie River. The river doubles in width to over 100 km, forming

(same map as the E Pluribus Anthony above.), and then this is a place on that south part of Quebec province:

Former Municipalities (10)Edit

The pre-2002 Lévis had already merged with Lauzon and Saint-David-de-l’Auberivière in 1989.