Ornbaun Valley and its surrounding creek systems define this section of Mendocino County, where the historic Old Ornbaun Hot Springs sits at the foot of steep terrain. The landscape is carved by numerous watercourses, including Rancheria Cr and the many branches of Mill Cr. This 2015 USGS survey reveals the intricate topography of the coastal ranges, characterized by prominent elevations like Grizzly Peak and Hawk Butte.
38 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.
1920 · Ukiah
USGS Topo · 1:62,500
1938 · Hopland
USGS Topo · 1:62,500
1943 · Boonville
USGS Topo · 1:62,500
1943 · Hopland
USGS Topo · 1:62,500
1943 · Ornbaun
USGS Topo · 1:62,500
1944 · Ukiah
USGS Topo · 1:62,500
1944 · Ornbaun
USGS Topo · 1:62,500
1944 · Hopland
USGS Topo · 1:62,500
1947 · Santa Rosa
USGS Topo · 1:250,000
1949 · Santa Rosa
USGS Topo · 1:250,000