Big Rideau Lake is a Lake located in Leeds; Lanark, Ontario and has an elevation of 136 meters.

• Latitude: 44° 46' 15'' North   (decimal: 44.7708333)
• Longitude: 76° 12' 45'' West   (decimal: -76.2124999)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 136 meters
• Location: Leeds; Lanark
• Atlas of Canada Locator Map: Big Rideau Lake
• GPS Coordinate Locator Map: Big Rideau Lake Lat/Long