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2018 Map of South Mountain

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

USGS Topo · Published 2018

About this map

Modoc National Forest land defines this landscape in Modoc County, where high-elevation water management is the primary human imprint on the terrain. The sheet highlights a network of vital water resources for livestock and forest health, including the South Mountain Reservoir, Telephone Flat Reservoir, and Deer Hill Reservoir. These reservoirs are complemented by isolated infrastructure like the Cougar Pass Tank and Cow Head Tank, illustrating the carefully managed hydrology of the California high country.

Relief is dominated by volcanic and tectonic features such as South Mountain and Juniper Ridge. Forest Service roads and spurs, including South Mtn Resvr and Deerhill Res South, trace the contours of the land, providing access for timber management and fire suppression. Notable natural drainages such as Willow Cr and Fletcher Cr cut through the forest, while Grassy Ravine provides a distinct break in the upland topography.