William Lake is a Lake located in Rainy River, Ontario and has an elevation of 417 meters.

• Latitude: 48° 19' 25'' North   (decimal: 48.3236111)
• Longitude: 91° 43' 00'' West   (decimal: -91.7166666)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 417 meters
• Location: Rainy River
• Atlas of Canada Locator Map: William Lake
• GPS Coordinate Locator Map: William Lake Lat/Long