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1958 Map of Clearlake Oaks

Name: 1958 Topographic Map of Clearlake Oaks
Creator: U.S. Geological Survey
Published: 1978
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1978

About this map

The northeastern shoreline of Clear Lake anchors this 1958 survey, showing the lakeside communities of Clearlake Oaks and Glenhaven as they developed in the mid-20th century. The map documents a diverse mix of land uses, from the residential blocks and a substation at the Oaks to the industrial footprint of the Sulphur Bank Mine and the Sulphur Bank Rancheria.

Elevation gains quickly away from the water, where the High Valley Ridge separates the lake basin from the more agricultural and pastoral landscapes of High Valley and Long Valley. These interior areas are marked by isolated holdings like Garner Ranch and Kennedy Ranch, as well as the southern reaches of the Mendocino National Forest. Notable island features including Rattlesnake Island, Stubbs Island, and Anderson Island illustrate the complex geography of the lake's eastern arm.