Mount Vaca and the Blue Ridge dominate this section of the Vaca Mountains, where the elevation falls sharply into the Vaca Valley and the western edge of the Sacramento Valley. This landscape is defined by its deep canyons and ridges, including Wild Horse Canyon, Gates Canyon, and Cold Canyon, which channel various creeks toward the valley floor. The boundary between Napa Co and Solano Co follows the highest ridgelines, marking a significant topographical transition between the coastal ranges and the agricultural interior.
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1902 · Napa
USGS Topo · 1:125,000
1907 · Woodland
USGS Topo · 1:62,500
1908 · Vacaville
USGS Topo · 1:62,500
1916 · Winters
USGS Topo · 1:31,680
1917 · Wolfskill
USGS Topo · 1:31,680
1917 · Elmira
USGS Topo · 1:31,680
1921 · Mt. Vaca
USGS Topo · 1:62,500
1924 · Capay
USGS Topo · 1:62,500
1941 · Vacaville
USGS Topo · 1:62,500
1941 · Woodland
USGS Topo · 1:62,500