
Clear Lake dominates the northwest corner of this terrain, its shoreline dotted with developing communities like Clearlake Highlands and Clearlake Park during the late 1950s. The landscape is defined by its hydrothermal and mineral activity, evidenced by the presence of Sulphur Bank Mine and numerous mineral springs and resorts that became regional fixtures. Settlements such as Whispering Pines, Hobergs, and Anderson Springs reflect the area's mid-century identity as a retreat destination nestled within the wooded uplands of Boggs Mountain State Forest.
94 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
2 editions found
1920 · Venado
USGS Topo · 1:62,500
1920 · Healdsburg
USGS Topo · 1:62,500
1921 · Kelseyville
USGS Topo · 1:62,500
1924 · Bartlett Springs
USGS Topo · 1:62,500
1927 · Calistoga
USGS Topo · 1:62,500
1933 · Healdsburg
USGS Topo · 1:48,000
1938 · Lakeport
USGS Topo · 1:62,500
1940 · Healdsburg
USGS Topo · 1:62,500
1942 · Bartlett Springs
USGS Topo · 1:62,500
1942 · St. Helena
USGS Topo · 1:62,500