Brennan Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 303 meters.

• Latitude: 50° 1' 28'' North   (decimal: 50.0244444)
• Longitude: 87° 42' 59'' West   (decimal: -87.7163888)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 303 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Brennan Lake
• GPS Coordinate Locator Map: Brennan Lake Lat/Long