East Mattawishkwia River is a River located in Cochrane, Ontario and has an elevation of 247 meters.

• Latitude: 49° 46' 28'' North   (decimal: 49.7744444)
• Longitude: 83° 27' 41'' West   (decimal: -83.4613888)
• Topography Feature Category: River
• Geographical Feature: River
• Canadian Province/Territory: Ontario
• Elevation: 247 meters
• Location: Cochrane
• Atlas of Canada Locator Map: East Mattawishkwia River
• GPS Coordinate Locator Map: East Mattawishkwia River Lat/Long