2016 Map of Cape Vincent South OE W

About this map

Saint Lawrence River waters dominate this international boundary region at the northern edge of Jefferson County. The map documents the aquatic landscape along the border of the United States and Canada, showing the open water expanses between the mainland and the scattered landmasses of the Thousand Islands region. A portion of Grenadier Island is visible along the eastern edge, while the northern reaches include the sheltered Lake of the Isles. Navigation and shoreline data are the primary focus here, evidenced by submerged features like the Allan Otty Shoal, which sits centrally in the river channel. This 2016 survey reflects the contemporary maritime boundaries and hydrographic conditions of the waterway during a period of modern environmental monitoring and digital cartographic updates by the U.S. Geological Survey.