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1990 Map of Ambrose Valley
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1990 Map of Ambrose Valley

USGS Topo · Published 1990

About this map

Modoc National Forest encompasses the rugged landscape of this northern California terrain, where high-elevation drainage systems and prominent ridges define the local geography. The map captures a complex network of springs, including Pothole Spring, Stump Spring, and Yellow Jacket Spring, which provided essential water sources in this dry mountain environment. The intersection of the Modoc Co Lassen Co boundary splits the territory, while the Ash Creek Trail and Ash Creek Campground indicate the recreational and utility corridors established by the late 1980s. Natural features like Round Valley and Ambrose Valley are framed by substantial uplands such as Deer Spring Ridge and Slate Spring Ridge, illustrating the varied topography of the region. Local nomenclature is preserved through labels like Hunsinger Draw, Messenger Gulch, and Sweagert Flat, offering specific locations for family-named landmarks and historical land use.

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Map Details

Date Portrayed1990
Date Published1990
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.7 inches

Editions of this 1990 Ambrose Valley Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Dan Ryan Place Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain