Second Adder Lake is a Lake located in Northumberland, New Brunswick and has an elevation of 440 meters.

• Latitude: 47° 5' 24'' North   (decimal: 47.0900873)
• Longitude: 66° 50' 43'' West   (decimal: -66.8452868)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: New Brunswick
• Elevation: 440 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Second Adder Lake
• GPS Coordinate Locator Map: Second Adder Lake Lat/Long