Jeff Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 393 meters.

• Latitude: 48° 43' 14'' North   (decimal: 48.7205555)
• Longitude: 88° 39' 57'' West   (decimal: -88.6658333)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 393 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Jeff Lake
• GPS Coordinate Locator Map: Jeff Lake Lat/Long