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2018 Map of Santiago Peak

Name: 2018 Topographic Map of Santiago Peak
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

The Santa Ana Mountains dominate this 2018 survey, centered on the high ridges of Santiago Peak and Modjeska Peak. To the west, the suburban expansion of Mission Viejo and Rancho Santa Margarita meets the foothills of the Cleveland National Forest. This interface between developed residential tracts like Robinson Ranch and the natural drainages of Arroyo Trabuco illustrates the modern landscape of south Orange County.

Remote canyons such as Holy Jim Canyon and Trabuco Canyon reach deep into the forest, where springs like Grotto Spring and Laurel Spring feed the seasonal water system. The map also records the boundary line between Orange Co and Riverside Co as it traverses the mountain crests. This document provides a detailed view of these communities at a point of high density, noting the network of trails and truck trails, including the Main Divide Truck Trl, used for fire management and recreational access.