1942 Map of Arched Rock

About this map

The rugged shoreline where the Russian River meets the Pacific Ocean dominates this 1942 survey of the Sonoma coast. The map illustrates a dramatic landscape defined by steep coastal drainages like Timber Gulch and Russian Gulch, which cut through the uplifted terrain toward the sea. Inland, the high point of Little Black Mountain overlooks the drainage basins of the West Branch, Middle Branch, and East Branch, showing the complex topography that shaped early access to the region's timber and resources. Notable maritime hazards and landmarks are clearly identified along the surf line, including the distinctive Arched Rock, Goat Rock, and the offshore Mile Rocks. The inclusion of the Muniz area provides a glimpse into the land divisions and coastal ranching character of the era before mid-century development.