Lac Long is a Lake located in Saint-Paul-de-Montminy; Montmagny, Quebec and has an elevation of 508 meters.

• Latitude: 46° 40' 51'' North   (decimal: 46.6808591)
• Longitude: 70° 16' 16'' West   (decimal: -70.2711805)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 508 meters
• Location: Saint-Paul-de-Montminy; Montmagny
• Atlas of Canada Locator Map: Lac Long
• GPS Coordinate Locator Map: Lac Long Lat/Long