Big Dam is a Unincorporated area located in Shannon; La Jacques-Cartier, Quebec.

• Latitude: 46° 53' 33'' North   (decimal: 46.8925213)
• Longitude: 71° 31' 25'' West   (decimal: -71.5237089)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Shannon; La Jacques-Cartier
• Atlas of Canada Locator Map: Big Dam
• GPS Coordinate Locator Map: Big Dam Lat/Long