Porphyry Lake is a Lake located in Mackenzie, Northwest Territories.

• Latitude: 64° 3' 1'' North   (decimal: 64.0502528)
• Longitude: 113° 24' 5'' West   (decimal: -113.4012759)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Northwest Territories
• Location: Mackenzie
• Atlas of Canada Locator Map: Porphyry Lake
• GPS Coordinate Locator Map: Porphyry Lake Lat/Long