Pumper Rock is a Shoal located in Lanark, Ontario.

• Latitude: 44° 48' 44'' North   (decimal: 44.8122222)
• Longitude: 76° 11' 24'' West   (decimal: -76.1900000)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Ontario
• Location: Lanark
• Atlas of Canada Locator Map: Pumper Rock
• GPS Coordinate Locator Map: Pumper Rock Lat/Long