Mattawasaga River is a River located in Cochrane, Ontario and has an elevation of 273 meters.

• Latitude: 48° 35' 32'' North   (decimal: 48.5922222)
• Longitude: 79° 33' 23'' West   (decimal: -79.5563888)
• Topography Feature Category: River
• Geographical Feature: River
• Canadian Province/Territory: Ontario
• Elevation: 273 meters
• Location: Cochrane
• Atlas of Canada Locator Map: Mattawasaga River
• GPS Coordinate Locator Map: Mattawasaga River Lat/Long