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1989 Map of Lake Almanor

Name: 1989 Topographic Map of Lake Almanor
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

Lassen Peak and the volcanic terrain of Lassen Volcanic National Park dominate this late-twentieth-century landscape, where geological history meets modern infrastructure. The map details the expansive waters of Lake Almanor and the Butt Valley Reservoir, highlighting the importance of hydroelectric development and recreation in the High Sierra. Established timber and service communities like Chester and Westwood act as hubs near the Western Pacific RR, which traces the canyons of the North Fork Feather River.

Cultural history is preserved in the Ishi Wilderness, specifically at the Ishi Caves (Yahi Indian Camp), marking a significant site of Indigenous heritage. The map also records numerous smaller settlements such as Mineral, Hamilton Branch, and Prattville, alongside the extensive network of national forest lands. This edition captures the region's character as a managed wilderness, defined by its reservoirs, mountain peaks like Brokeoff Mountain, and the transitional zones between the Sacramento Valley and the Sierra Nevada.