Sunday Lake is a Lake located in Cassiar Land District, British Columbia and has an elevation of 373 meters.

• Latitude: 55° 27' North   (decimal: 55.4499999)
• Longitude: 127° 48' West   (decimal: -127.8000000)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: British Columbia
• Elevation: 373 meters
• Location: Cassiar Land District
• Atlas of Canada Locator Map: Sunday Lake
• GPS Coordinate Locator Map: Sunday Lake Lat/Long