Middle Island is a small island, just 18.5 hectares (46 acres) in size. It is the southernmost point of land in Canada, located at 41°41'N, 82°41"W (41.685,-82.684), or about 41.7 degrees north latitude. It lies in Lake Erie, just south of Pelee Island, and is part of Point Pelee National Park. It forms part of the province of Ontario. The southernmost part of the island lies some 150 metres (164 yd) from the U. S. maritime boundary.