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2018 Map of Diamond Mountain

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

USGS Topo · Published 2018

About this map

Susanville sits at the northern edge of this high-altitude landscape, where the southern reaches of the Honey Lake Valley meet the rising slopes of the Diamond Mountains. The 2018 survey reveals a terrain defined by its complex hydrology and forest management, straddling the boundary between Lassen National Forest and Plumas National Forest. Water is a critical feature of the local topography, represented by several managed water bodies like Ridenoure Reservoir, Nagel Reservoir, and the Emerson Ditch system.

South of the settlement at Red Rock, the map follows the dramatic elevation gains toward Diamond Mtn and across the Wildcat Ridge. This area is crisscrossed by an intricate network of forest service roads and specialized tracks such as the Lowe Motor Way and Sawmill Grade, reflecting the region's history of logging and resource access. From the secluded Lost Meadows to the high Gilman Basin, the map documents the transition from valley floor to alpine timberland.