1955 Map of Gull Island

About this map

Gull Island rises from the northern reaches of Lake Michigan in this mid-century hydrographic and topographic study. Located within the administrative boundaries of St James Twp, the island's interior is marked by its highest point, South Gull, and a navigational Light situated on its northern end. The map meticulously details the underwater hazards surrounding this remote landmass, documenting the expansive Gull Island Reef to the southeast and the isolated Boulder Reef to the southwest. These depth soundings and contour intervals reflect the primary data used by mariners navigating the Beaver Island archipelago during the 1950s. The isolation of these landforms illustrates the maritime character of Charlevoix County before modern GPS, where terrestrial landmarks and accurately charted reefs were essential for safe passage through the Great Lakes.