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2021 Map of McGuire Ridge

Name: 2021 Topographic Map of McGuire Ridge
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

The Mendocino Co and Sonoma Co boundary runs directly through this heavily dissected coastal range landscape, following a winding east-west path across Robinson Ridge. Settlement in this era is sparse, defined primarily by small clearings and flats such as Peachtree Flat, Lowrey Openings, and Cox Opening. The topography is a complex web of named ridges and deep gulches, including the distinctively named Hoodoo Gulch and McGann Gulch.

Drainage systems are well-defined, with the South Fork Gualala River cutting through the southwestern corner while the North Fork Gualala River and its numerous tributaries, like Stewart Creek and Billings Creek, carve out the central and northern sections. The presence of McKenzie Grade and several timber-related ridge names, such as School Ridge and Fisher Ridge, suggests a landscape historically shaped by the local logging economy and early overland transport routes.