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2015 Map of North Yolla Bolly Mountains

Name: 2015 Topographic Map of North Yolla Bolly Mountains
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

The North Yolla Bolly Mountains dominate this high-elevation landscape along the boundary of Trinity National Forest and Mendocino National Forest. This remote section of the California Coast Ranges is defined by a complex network of ridges and basins, including Rat-Trap Ridge, Fisher Ridge, and the Beegum Basin. The drainage system is equally intricate, with the S Fork Trinity River and the E Fork S Fork Trinity River carving through the western slopes while the Cold Fork and S Fork Beegum Cr flow toward the east.

Water sources are vital markers for those tracking historical land use in this wilderness, found at Clarence Spring and North Yolla Bolly Spring. High-country landmarks such as Tedoc Mtn and Chicago Rock provide orientation across the steep terrain, which is accessible primarily via Forest Rte 35 and Tedoc Rd. The map illustrates the convergence of Tehama and Trinity counties amidst prominent features like N Yolla Bolly Lake and Murphy Glades.