St. Joseph Island is in the northwestern part of Lake Huron. It is part of the Canadian province of Ontario. At 365 km2 in area, it is the sixth largest lake island in the world; the second largest island on Lake Huron, following Manitoulin Island; and the third largest of all the islands on the Great Lakes, trailing Manitoulin and Lake Superior's Isle Royale.
The island lies approximately 45 km south east of the city of Sault Ste. Marie and 225 km south west of Sudbury.
Wikipedia https://en.wikipedia.org/wiki/St._Joseph_Island_(Ontario)
Coordinates 46°12'57.798" N -84°2'35.848" E
