Big Marsh Narrows is a Channel located in Kenora, Ontario and has an elevation of 332 meters.

• Latitude: 49° 6' 43'' North   (decimal: 49.1119444)
• Longitude: 94° 10' 23'' West   (decimal: -94.1730555)
• Topography Feature Category: Channel
• Geographical Feature: Narrows
• Canadian Province/Territory: Ontario
• Elevation: 332 meters
• Location: Kenora
• Atlas of Canada Locator Map: Big Marsh Narrows
• GPS Coordinate Locator Map: Big Marsh Narrows Lat/Long