Big Rat Lake is a Lake located in 57-23-W, Manitoba and has an elevation of 312 meters.

• Latitude: 54° 48' 16'' North   (decimal: 54.8044000)
• Longitude: 100° 56' 43'' West   (decimal: -100.9453000)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Manitoba
• Elevation: 312 meters
• Location: 57-23-W
• Atlas of Canada Locator Map: Big Rat Lake
• GPS Coordinate Locator Map: Big Rat Lake Lat/Long