Marks Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 475 meters.

• Latitude: 48° 20' 51'' North   (decimal: 48.3474999)
• Longitude: 90° 15' 36'' West   (decimal: -90.2600000)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 475 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Marks Lake
• GPS Coordinate Locator Map: Marks Lake Lat/Long