Province Island
From Openwaterpedia
Province Island is an island in Lake Memphremagog at approximately 45.008640°N 72.232398°W that is crossed by the international boundary. About one tenth of the southern end of the island is in the United States; the remainder is in Canada.
Open Water swimming.com
The Clubhous-Province Island Swim or the Province Island Swim is a 10 km marathon swim in Lake Memphremagog, Vermont organized by Phil White. It is part of the Saturday Clubhous Swim Series.