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1958 Map of Lower Lake

Name: 1958 Topographic Map of Lower Lake
Creator: U.S. Geological Survey
Published: 1971
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1971

About this map

The south shore of Clear Lake serves as a hub of development during this late 1950s survey, dominated by the residential and commercial growth of Clearlake Highlands and Clearlake Park. The landscape is a mix of volcanic terrain and mineral history, evidenced by the Sulphur Bank Mine near Boras Lake and the Baker Mine further south. This era is particularly notable for the proliferation of mineral spring resorts and high-altitude retreats that once defined the region's economy, including Harbin Springs, Salminas Resort, and Ettawa Springs.

Southward, the terrain rises into the timbered slopes of the Boggs Mountain State Forest and the peaks of Cobb Mtn. Settlement patterns follow the winding creek valleys, with communities like Middletown and Lower Lake established at key crossroads. Smaller enclaves such as Loch Lomond and Whispering Pines indicate the mid-century appeal of the pine-covered highlands for recreation and seasonal residence.