Green Valley serves as a primary point of interest in this 2012 topographic survey, where the valley floor meets the rising foothills of Mount George. The landscape is defined by its complex water management system, featuring numerous reservoirs such as Lake Madigan, Lake Frey, and Lake Curry that collect runoff from the surrounding ridges. These drainages, including Wild Horse Cr and Green Valley Cr, create a pattern of deep canyons and seasonal waterways like Green Valley Falls and Cook Canyon.
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This is the sole edition of this map. No revisions or reprints were ever made.
1896 · Carquinez Strait
USGS Topo · 1:62,500
1898 · Karquines
USGS Topo · 1:62,500
1901 · Karquines
USGS Topo · 1:62,500
1902 · Napa
USGS Topo · 1:125,000
1916 · Mare Island
USGS Topo · 1:62,500
1921 · Mt. Vaca
USGS Topo · 1:62,500
1940 · Carquinez Strait
USGS Topo · 1:62,500
1942 · Mare Island
USGS Topo · 1:62,500
1942 · Carquinez
USGS Topo · 1:62,500
1942 · Sonoma
USGS Topo · 1:62,500