Lac de Pormenaz is an alpine lake in the Passy National Nature Preserve (Réserve naturelle nationale de Passy) of the Haute-Savoie department of France. Its surface area of 4.4 ha is at an elevation of 1945 m.

Lac de Pormenaz
Lac de Pormenaz is located in Auvergne-Rhône-Alpes
Lac de Pormenaz
Lac de Pormenaz
Lac de Pormenaz is located in France
Lac de Pormenaz
Lac de Pormenaz
LocationHaute-Savoie
Coordinates45°57′44″N 6°47′38″E / 45.96222°N 6.79389°E / 45.96222; 6.79389
Basin countriesFrance
Surface area4.4 ha (11 acres)
Surface elevation1,945 m (6,381 ft)

The lake can be reached by foot from the village of Plaine Joux above Servoz.

Lac de Pormenaz