Porthos Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 350 meters.

• Latitude: 49° 44' 39'' North   (decimal: 49.7441666)
• Longitude: 87° 6' 57'' West   (decimal: -87.1158333)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 350 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Porthos Lake
• GPS Coordinate Locator Map: Porthos Lake Lat/Long