1973 Map of Sucia Island

About this map

Patos Island and Sucia Island stand as the primary landmasses in this northern reach of the San Juan archipelago, where the Strait of Georgia meets Boundary Pass. This 1970s survey documents the critical maritime and conservation infrastructure of the era, including the U S Coast Guard Reservation surrounding Patos Light at Alden Pt. The geography of the islands is highly articulated, featuring finger-like peninsulas and sheltered coves such as Fossil Bay, Echo Bay, and Shallow Bay. Much of the territory is dedicated to public and protected use, shown through Sucia Island State Park and portions of the San Juan Islands National Wildlife Refuge. The map details numerous established campgrounds, suggesting the islands' mid-century role as a destination for marine recreation and environmental preservation.