Tadoussac is located on the north-west shore of the Saint Lawrence River, at its confluence with the Saguenay River. The cold, fresh water from the Saguenay and the warmer, salty water of the St. Lawrence, meet to create a rich marine environment. The rivers support an abundance of krill, making the area very attractive to whales.
Tadoussac is the north-east terminus of the Baie-Ste-Catherine/Tadoussac ferry, which offers free and frequent service across the Saguenay River. The ferry is part of Quebec Route 138 and the main link to Sept-Îles. The village is thus considered the gateway to the Manicouagan
