Lac de Lessy is a lake at Le Petit-Bornand-les-Glières in the Haute-Savoie, France.

Lac de Lessy
Lac de Lessy is located in Savoie
Lac de Lessy
Lac de Lessy
LocationHaute-Savoie
Coordinates45°59′16″N 6°26′17″E / 45.98778°N 6.43806°E / 45.98778; 6.43806
Basin countriesFrance
Surface area7.1 ha (18 acres)
Max. depth1.7 m (5 ft 7 in)
Residence time600 days
Surface elevation1,730 m (5,680 ft)