Lac Percy is a Lake located in Saint-Joseph-de-Kamouraska; Kamouraska, Quebec.

• Latitude: 47° 33' 59'' North   (decimal: 47.5663889)
• Longitude: 69° 32' 57'' West   (decimal: -69.5491666)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Saint-Joseph-de-Kamouraska; Kamouraska
• Atlas of Canada Locator Map: Lac Percy
• GPS Coordinate Locator Map: Lac Percy Lat/Long