What was the range of elevation for water route taken by cartier from quebec to montreal?

There is no water route from Quebec City to Montreal. They are both located on the St. Lawrence River, but Quebec City is about 200 kilometers (124 miles) northeast of Montreal. The elevation of the St. Lawrence River at Quebec City is about 5 meters (16 feet) above sea level, while the elevation of the river at Montreal is about 20 meters (66 feet) above sea level.