Lac Firth is a Lake located in Rivière-Nipissis; Sept-Rivières, Quebec and has an elevation of 578 meters.

• Latitude: 50° 56' 16'' North   (decimal: 50.9377778)
• Longitude: 65° 52' 36'' West   (decimal: -65.8766667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 578 meters
• Location: Rivière-Nipissis; Sept-Rivières
• Atlas of Canada Locator Map: Lac Firth
• GPS Coordinate Locator Map: Lac Firth Lat/Long