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1990 Map of Letterbox Hill
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1990 Map of Letterbox Hill

USGS Topo · Published 1990

About this map

Modoc National Forest dominates this landscape in Lassen County, California, showing a region defined by high-country water management and timberland. In the late 20th century, a complex network of man-made water features such as Myers Reservoir, Cary Reservoir, Whit Flat Reservoir, and McClelland Reservoir suggest a land carefully managed for livestock or local irrigation. The southern portion of the map transitions into the State Game Refuge, encompassing large topographical features like Hayden Hill and Silva Flat.

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Map Details

Date Portrayed1990
Date Published1990
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.6 inches

Editions of this 1990 Letterbox Hill Map

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

Historical Maps of Lassen County Through Time

410 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain