Slacks Lake is a Lake located in Northumberland, New Brunswick and has an elevation of 476 meters.

• Latitude: 47° 10' 51'' North   (decimal: 47.1808435)
• Longitude: 66° 20' 50'' West   (decimal: -66.3472363)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: New Brunswick
• Elevation: 476 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Slacks Lake
• GPS Coordinate Locator Map: Slacks Lake Lat/Long