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1977 Map of Arched Rock

Name: 1977 Topographic Map of Arched Rock
Creator: U.S. Geological Survey
Published: 1978
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1978

About this map

Sonoma Coast State Beach and its distinctive shoreline dominate this survey, where the Russian River meets the Pacific Ocean just north of Bodega Bay. The landscape is characterized by steep coastal bluffs and deep drainages like Russian Gulch, Jewell Gulch, and Timber Gulch, which cut through the high ground rising toward Little Black Mtn. These geological formations, including the prominent namesake Arched Rock and the nearby Goat Rock, highlight the erosional forces at work along the Sonoma coast.

Transportation is limited to high-relief routes like Meyers Grade Road, which follows the contours above the surf. The map shows the land still largely divided by traditional boundaries, such as those of the Muniz grant, reflecting the area's history of large-scale landholdings. This survey captures a stretch of coast defined more by its natural landmarks like Mile Rocks and Halfmile Rock than by modern development.