The Lac de l'Enfer is a body of water in the watershed of the Rivière à Mars and the Saguenay River.

Lac de l'Enfer is located in the northern part of the Laurentides Wildlife Reserve.

The watershed of Lac de l'Enfer is mainly served indirectly by the forest road R0287 which runs on the southwest side along a higher segment of the rivière du Moulin.

The surface of Lac de l'Enfer is usually frozen from the beginning of December to the end of March, however safe circulation on the ice is generally done from mid-December to mid-March.

[2] The toponym “Lac de l'Enfer” appeared in the Dictionary of Rivers and Lakes of the Province of Quebec (1925), page 256.