Big Mud Lake is a Lake located in Lanark, Ontario and has an elevation of 182 meters.

• Latitude: 45° 14' 27'' North   (decimal: 45.2408333)
• Longitude: 76° 33' 56'' West   (decimal: -76.5655555)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 182 meters
• Location: Lanark
• Atlas of Canada Locator Map: Big Mud Lake
• GPS Coordinate Locator Map: Big Mud Lake Lat/Long