1939 Map of Algonac

About this map

Algonac and the surrounding river delta landscape appear here during a period of transition in the late 1930s. The map detail highlights the complex waterway network of the St Clair River, where the North Channel, Middle Channel, and South Channel diverge to create a labyrinth of islands and marshes. On Harsens Island, a network of roads like Columbine Road and Stewart Road connects small riverfront settlements such as Sans Souci and Maple Leaf. Local community life is anchored by landmarks like the Harsens Island Sch and St Marks Ch, while the southern reaches near Muscamoot Bay remain largely dominated by low-lying terrain. This survey provides a clear look at the international boundary line between Michigan and Ontario, tracing the deep water channels that defined trade and travel between the United States and Canada.