Big Mountain Lake is a Lake located in Peterborough, Ontario and has an elevation of 271 meters.

• Latitude: 44° 38' 7'' North   (decimal: 44.6352777)
• Longitude: 77° 59' 21'' West   (decimal: -77.9891666)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 271 meters
• Location: Peterborough
• Atlas of Canada Locator Map: Big Mountain Lake
• GPS Coordinate Locator Map: Big Mountain Lake Lat/Long