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1945 Map of Lower Lake

Name: 1945 Topographic Map of Lower Lake
Creator: U.S. Geological Survey
Published: 1945
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1945

About this map

Clear Lake anchors this mid-century landscape, surrounded by a burgeoning network of resorts and springs that defined Lake County's early tourism economy. The 1943 surveying shows established destinations such as Salminas Resort, Seigler Springs, and Hobergs, alongside the newer residential developments of Clear Lake Highlands and Clear Lake Park. Beyond the shoreline, the map reveals a history of resource extraction, from the Sulphur Bank near Borax Lake to the Baker Mine (abandoned) in the eastern hills.

Water management is central to the area's development, evidenced by the Clear Lake Water Co Dam controlling the outflow of Cache Creek. To the south, the settlement of Middletown serves as a gateway to the Collayomi Valley, while family-named landmarks like Manning Flat and Perini Hill provide specific points of interest for genealogists tracing regional land ownership and early mountain homesteads.