The Simoncouche Lake straddles the unorganized territory of Lac-Ministuk, and that of the city of Saguenay, in the administrative region of Saguenay–Lac-Saint-Jean, in the province of Quebec, in Canada.

This small valley is served by the route 170 (boulevard Talbot) and some secondary roads for the needs of forestry, recreational tourism activities.

The surface of Lake Simoncouche is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally made from mid-December to mid-March.

The name Moncouche comes from Muakush, an Amerindian word meaning sea eagle.

[3] The toponym Lac Simoncouche was formalized on December 5, 1968, by the Commission de toponymie du Québec.