1958 Map of Clearlake Oaks

About this map

Clearlake Oaks and Glenhaven line the northern shores of Clear Lake, where the shoreline is defined by numerous points and islands. This 1958 survey, updated with 1975 photogrammetric data, reveals the industrial and cultural history of the eastern lakefront through features like the Sulphur Bank Mine and the Sulphur Bank Rancheria. The terrain rises sharply from the water toward High Valley Ridge, leading into the interior High Valley where High Valley Road connects remote outposts like Garner Ranch and Kennedy Ranch. The map captures the interface between the lake’s recreational and residential development and the protected lands of the Mendocino National Forest. Significant water features such as Indian Beach, Paradise Cove, and the various islands—including Rattlesnake Island and Stubbs Island—illustrate the complex geography that has drawn people to this part of Lake County for generations.