Lac Obamsca is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 232 meters.

• Latitude: 50° 24' 17'' North   (decimal: 50.4047222)
• Longitude: 78° 16' 6'' West   (decimal: -78.2683333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 232 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Obamsca
• GPS Coordinate Locator Map: Lac Obamsca Lat/Long