2016 Map of Galloo Island

About this map

Galloo Islands dominate this 2016 survey of eastern Lake Ontario, providing a detailed view of these remote landmasses within Jefferson County. The map details the topography of the main island, including the sheltered waters of Gill Harbor on the eastern shore and the enclosed North Pond at the northern tip. Surrounding these islands are significant maritime features like the Galloo Shoal to the southwest and the deeper Galloo Basin to the north, which transitions into the Saint Lawrence Channel. This modern topographic study reveals a landscape defined by its isolation and maritime hazards, showing the precise relationship between the main island and its smaller neighbor, Little Galloo Island. The lack of significant road infrastructure or named settlements on the islands emphasizes their character as specialized environments or conservation areas at the edge of the international border.