The Lake Marmette is a freshwater body located in the Center-North part of Gouin Reservoir, in the territory of the town of La Tuque (in the South-East of village of Obedjiwan), in the administrative region of Mauricie, in province of Quebec, in Canada.

Recreational tourism activities constitute the main economic activity of the sector because of its strategic position, because pleasure boating must cross this body of water towards the west, by taking the pass located to the south of the eastern tip of the village of Obedjiwan, delimiting the eastern part of Gouin Reservoir.

The hydrographic slope of lake Marmette is served indirectly on the north side by route 212 connecting the village of Obedjiwan to the east shore of Gouin reservoir; this road provides access to Toussaint Lake and to the various bays on the northeast shore of Gouin Reservoir.

A few secondary forest roads have been built on the North-North shore of Gouin Reservoir for logging and recreational activities.

Before the end of the construction of La Loutre Dam in 1916, thus creating the Gouin Reservoir, Lake Marmette had a smaller dimension.