Roulston Lake is a Lake located in Rainy River, Ontario and has an elevation of 422 meters.

• Latitude: 48° 22' 37'' North   (decimal: 48.3769444)
• Longitude: 91° 33' 22'' West   (decimal: -91.5561111)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 422 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Roulston Lake
• GPS Coordinate Locator Map: Roulston Lake Lat/Long