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2012 Map of Mount Day

Name: 2012 Topographic Map of Mount Day
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

Ogier Ranch and Patton Ranch reflect the enduring pastoral character of this portion of the Diablo Range during the early 21st century. The landscape is defined by its complex drainage network, where the headwaters of Alameda Cr and the winding Arroyo Hondo carve through steep terrain. High points such as Mount Day, Black Mountain, and Mount Lewis anchor the topography, providing a sense of the scale of these coastal mountains.

Remote outposts like Old Camp, New Camp, and Hamilton Flat suggest a history of seasonal use or land management in areas distant from the urban centers of Santa Clara County. The map traces several distinct ridges, including Valpe Ridge and Packard Ridge, which run alongside watercourses like Isabel Cr and Smith Cr. This 2012 survey captures a rugged environment largely untouched by modern subdivision, preserving the footprint of traditional California ranching and geography.