Mayhew Lake is a Lake located in Renfrew, Ontario and has an elevation of 217 meters.

• Latitude: 45° 59' 48'' North   (decimal: 45.9966666)
• Longitude: 77° 34' 19'' West   (decimal: -77.5719444)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 217 meters
• Location: Renfrew
• Atlas of Canada Locator Map: Mayhew Lake
• GPS Coordinate Locator Map: Mayhew Lake Lat/Long