The floods in Saguenay

Photo : Jacques Desbiens Water is one of the main renewable natural resources of the Saguenay-Lac-Saint-Jean: it covers almost one tenth of the territory. This renewable natural resource sculpted our relief. A great quantity of water flows and is abundant in the regional landscape. It also justifies the location of most of our municipalities and industries and it still stimulates a large part of our human activities. Saguenay-Lac-Saint-Jean's hydrography is mainly concentrated inside two watersheds: the Saint-Jean Lake and the Saguenay River.

The water flowing into the Saint-Jean Lake watershed mainly comes from three large rivers: the Péribonka, the Mistassini and the Ashuapmushuan. They are supplied by hundreds of lakes and rivers located to the north of the region, right in the middle of the boreal forest. All of this water flows into the largest inhabited lake in Quebec, the Saint-Jean Lake. Described as an inland sea because of an area of over
1 000-sq. km, the Saint-Jean Lake pours its waters using the Petite and Grande Décharge Rivers leading them towards the Saguenay River and fjord, finally reaching the Saint-Lawrence River valley.

The Saguenay River watershed is composed of the whole of the Saint-Jean Lake watershed and all the lakes and rivers on both sides of the Saguenay downstream to its mouth. The Chicoutimi, aux-Sables and Ha! Ha! Rivers spring up from two subwatersheds: the Kénogami and the Ha! Ha! Reservoirs located in the Laurentian wildlife reserve.