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2015 Map of Mount Wilson

Name: 2015 Topographic Map of Mount Wilson
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

The San Gabriel Mountains tower over the northern edge of the Los Angeles basin, dominated by the prominent peak of Mount Wilson and its network of mountain roads like Mount Wilson Red Box Rd. This 2015 survey illustrates the sharp transition from the steep, canyon-riven wilderness of the Angeles National Forest to the dense suburban grids of the San Gabriel Valley. Along the foothills, engineering projects such as the Sierra Madre Debris Basin and Rubio Wash Debris Basin underscore the ongoing management of alluvial runoff from the peaks.

Further south, the map reveals the established communities of Pasadena, Sierra Madre, and Arcadia. These urban areas are anchored by major institutions and historic sites, including Pasadena City College and the Sierra Madre Cemetery. Water management is a defining characteristic of the landscape, seen in the channelization of the Santa Anita Wash and the presence of Baldwin Lake. This documentation captures the modern footprint of these historic foothill cities as they interface with the rugged geography of Mt Disappointment and San Gabriel Peak.