2023 Map of Rockport

About this map

The Saint Lawrence River serves as the dominant geographic and political boundary in this borderland corridor of Jefferson County. Marking the international line between Canada and the United States of America, this 2023 survey focuses on the intricate island clusters and narrow channels that define the region's riverine character. The map details small landforms such as Whiskey Island, Sylvan Island, and Arcadia Island, reflecting the complex topography of the Thousand Islands archipelago. Most of the quadrangle's interior remains an open network of unnamed seasonal streams and drainage basins, illustrating the low-lying, water-saturated nature of the landscape as it transitions toward the Great Lakes system.