Grassy Narrows Bay is a Bay located in Rainy River, Ontario and has an elevation of 345 meters.

• Latitude: 48° 44' 50'' North   (decimal: 48.7472222)
• Longitude: 93° 21' 47'' West   (decimal: -93.3630555)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 345 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Grassy Narrows Bay
• GPS Coordinate Locator Map: Grassy Narrows Bay Lat/Long