Grassy Island Lake is a Lake located in 31-26-W, Manitoba and has an elevation of 646 meters.

• Latitude: 51° 41' 26'' North   (decimal: 51.6906000)
• Longitude: 101° 5' 49'' West   (decimal: -101.0968999)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Manitoba
• Elevation: 646 meters
• Location: 31-26-W
• Atlas of Canada Locator Map: Grassy Island Lake
• GPS Coordinate Locator Map: Grassy Island Lake Lat/Long