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2018 Map of Ambrose Valley

Name: 2018 Topographic Map of Ambrose Valley
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 encompasses the high country of northeastern California in this 2018 survey, centered on the drainage systems of Ambrose Valley and Ambrose Canyon. The landscape is defined by a series of north-south ridges and draws, including Deer Spring Ridge and Slate Spring Ridge. A network of water sources is critical to this environment, with locations such as Big Pine Spring, Clack Spring, and Sunflower Spring scattered across the terrain.

The long-distance Red Tail Rim Trail traverses the central spine of the map, following the ridgelines from Sweagert Flat in the north toward the southern flats. The intersection of Modoc and Lassen counties occurs near Mid Ridge, where the terrain begins to drop toward the lower elevations of Rail Canyon. This map provides a detailed look at the complex topography of canyons like Sager Canyon and Rivalier Canyon that feed into the larger valley systems.