Georgian Bay is a large bay of Lake Huron, in the Laurentia bioregion. It is located entirely within the borders of Ontario, Canada. The main body of the bay lies east of the Bruce Peninsula and Manitoulin Island. To its northwest is the North Channel.
Basin countries: Canada
Max. length: 190 km (120 mi)
Max. width: 80 km (50 mi)
Surface area: 15,000 km² (5,800 sq mi)
Average depth: 150 feet (46 m) near the shoreline of Cabot Head