The ZEC du Lac-Brébeuf is a "zone d'exploitation contrôlée" (controlled harvesting zone) (ZEC) of 434 square kilometres (168 sq mi), located partly in the unorganized territory Lalemant, in the MRC Le Fjord-du-Saguenay Regional County Municipality and also in the MRC Charlevoix-Est Regional County Municipality, in the administrative region of Saguenay-Lac-Saint-Jean, in Quebec, in Canada.

Along 12 kilometres (7.5 mi) Brébeuf lake is located mainly in the canton de Brébeuf and extends partially into the territory of the municipality of Rivière-Éternité (River Eternity).

The docking station is 3 kilometers from the church of Saint-Félix-d'Otis, following the route du Lac-Brébeuf.

In this Zec, fishing enthusiasts take mostly brook (char or fountain), the lake trout and the eel.

Furthermore, hunting is popular for small animal (hare, grouse), the american black bear and the mousel.