Gahn Lake is a Lake located in Rainy River, Ontario and has an elevation of 398 meters.

• Latitude: 48° 29' 51'' North   (decimal: 48.4975000)
• Longitude: 91° 24' 24'' West   (decimal: -91.4066666)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 398 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Gahn Lake
• GPS Coordinate Locator Map: Gahn Lake Lat/Long