Hello how may I help you? what river is montreal on? Looking up information. Montreal is in the southwest of the province of Quebec. The city covers most of the Island of Montreal at the confluence of the Saint Lawrence and Ottawa Rivers. The port of Montreal lies at one end of the Saint Lawrence Seaway, the river gateway that stretches from the Great Lakes to the Atlantic. what is montreal's mayor Looking up the mayor of Montreal. The Mayor of Montreal is Denis Coderre. how much does it cost to go to montreal? What transportation do you prefer? army tank Well, the army tank costs about 8.5 million dollars. A train is more affordable. nah I wanna invade canada Well. Good luck with that.