O.S.A. Lake is a Lake located in Manitoulin, Ontario and has an elevation of 239 meters.

• Latitude: 46° 3' 17'' North   (decimal: 46.0547222)
• Longitude: 81° 23' 58'' West   (decimal: -81.3994444)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 239 meters
• Location: Manitoulin
• Atlas of Canada Locator Map: O.S.A. Lake
• GPS Coordinate Locator Map: O.S.A. Lake Lat/Long