Hidden Valley Lake serves as a central landmark in this 2018 survey of Lake County, where residential development and the natural drainages of the Inner Coast Ranges intersect. The settlement at Middletown anchors the southwest corner of the map within the Collayomi Valley, while the surrounding terrain is defined by a series of distinct basins including Excelsior Valley, Long Valley, and Coyote Valley.
92 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1927 · Calistoga
USGS Topo · 1:62,500
1942 · St. Helena
USGS Topo · 1:62,500
1943 · Morgan Valley
USGS Topo · 1:62,500
1943 · Calistoga
USGS Topo · 1:62,500
1944 · Morgan Valley
USGS Topo · 1:62,500
1945 · Calistoga
USGS Topo · 1:62,500
1945 · St. Helena
USGS Topo · 1:62,500
1945 · Lower Lake
USGS Topo · 1:62,500
1947 · Santa Rosa
USGS Topo · 1:250,000
1949 · Santa Rosa
USGS Topo · 1:250,000