Downieville serves as the central hub of this Sierra County survey, situated at the confluence of the Downie River and the North Yuba River. The landscape is defined by its deep mining history, evidenced by the presence of the Oxford Mill and several historic mining sites including the White Bear Mine, Dolan Mine, and Pliocene Mine. A notable local landmark, the Sierra County Sheriffs Gallows, reflects the area's judicial heritage. The surrounding topography is a dense network of named ravines and flats such as Zumwalt Flat and Jersey Flat, alongside outlying agrarian outposts like Empire Ranch and Oak Ranch. This survey captures a region where hydraulic and hard-rock mining legacy is etched into the very nomenclature of the land, from Slug Canyon to Ruby Bluff.
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This is the sole edition of this map. No revisions or reprints were ever made.
1891 · Downieville
USGS Topo · 1:125,000
1891 · Colfax
USGS Topo · 1:125,000
1892 · Colfax
USGS Topo · 1:125,000
1893 · Downieville
USGS Topo · 1:125,000
1894 · Colfax
USGS Topo · 1:125,000
1895 · Downieville
USGS Topo · 1:125,000
1896 · Downieville
USGS Topo · 1:125,000
1897 · Downieville
USGS Topo · 1:125,000
1898 · Colfax
USGS Topo · 1:125,000
1900 · Colfax
USGS Topo · 1:125,000