Long Marsh Lake is a Lake located in Guysborough, Nova Scotia and has an elevation of 26 meters.

• Latitude: 44° 59' 51'' North   (decimal: 44.9975000)
• Longitude: 62° 6' 56'' West   (decimal: -62.1155555)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Nova Scotia
• Elevation: 26 meters
• Location: Guysborough
• Atlas of Canada Locator Map: Long Marsh Lake
• GPS Coordinate Locator Map: Long Marsh Lake Lat/Long