Big Marsh is a Low vegetation located in Bruce, Ontario and has an elevation of 211 meters.

• Latitude: 45° 12' 6'' North   (decimal: 45.2016666)
• Longitude: 81° 25' 12'' West   (decimal: -81.4200000)
• Topography Feature Category: Low vegetation
• Geographical Feature: Marsh
• Canadian Province/Territory: Ontario
• Elevation: 211 meters
• Location: Bruce
• Atlas of Canada Locator Map: Big Marsh
• GPS Coordinate Locator Map: Big Marsh Lat/Long