
Yorkville serves as the primary node of activity in this section of Mendocino County, where the topography is defined by the complex drainage systems of Dry Creek and the Middle Fork Feliz Creek. This 1991 provisional survey documents the mountainous terrain of the California Coast Ranges, dominated by peaks such as Sanel Mtn and Snow Mtn. The landscape is scattered with remote springs, including Pregnant Spring and Hilltop Spring, which historically supported local ranching and water needs. In the northeastern corner, the map shows Duncan Springs near the prominent Duncan Peak. The intricate network of waterways like Elkhorn Creek and Ingram Creek reveals the natural corridors through which early roads and settlers navigated this winding, elevated geography.
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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