1958 Map of Clearlake Oaks

About this map

Clear Lake dominates the southern portion of this mid-century topographic survey, its shoreline dotted with islands and emerging resort communities like Glenhaven and Clearlake Oaks. The northern landscape is defined by the steep transitions of the Mendocino National Forest, where drainage systems like Long Valley Creek and Wolf Creek carve through High Valley Ridge. Significant local industry and land use are evident in the presence of the Sulphur Bank Mine and the Sulphur Bank Rancheria near the lake’s edge, as well as several gravel pits and ranching outposts such as Garner Ranch and Kennedy Ranch in the interior valleys. The map documents a period before extensive modern development, noting rural infrastructure like the East Lake Sch and various jeep trails that connect the high ridges to the waterfront.