
The northern reaches of the Clover valley system meet the high ridges of Lake County in this late-1970s orthophotograph. Unlike traditional line-drawn maps, this aerial perspective reveals the exact texture of the chaparral and timbered slopes, documenting the precise extent of vegetation and land clearing during the era. Small pockets of flat land like Twin Valley provide sharp contrast to the dense, shadow-draped canyons that characterize this part of the California Coast Ranges. The map serves as a physical record of the landscape before more modern developments or fire cycles may have altered the visual patterns of the hillsides and ranch lands.
2 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.
1922 · Hullville
USGS Topo · 1:62,500
1924 · Bartlett Springs
USGS Topo · 1:62,500
1938 · Lakeport
USGS Topo · 1:62,500
1942 · Bartlett Springs
USGS Topo · 1:62,500
1944 · Bartlett Springs
USGS Topo · 1:62,500
1951 · Lake Pillsbury
USGS Topo · 1:62,500
1951 · Lakeport
USGS Topo · 1:62,500
1951 · Stonyford
USGS Topo · 1:62,500
1957 · Ukiah
USGS Topo · 1:250,000
1958 · Clearlake Oaks
USGS Topo · 1:24,000