Mason Valley serves as the centerpiece of this Lyon County landscape, where the confluence of the West Walker River and East Walker River feeds a complex network of irrigation infrastructure. This system includes McLeod Ditch, Spragg-Woodcock Ditch, and Back Fox Ditch, illustrating the intensive water management required for high-desert agriculture. The city of Yerington anchors the northern portion of the map, flanked by the residential layout of Weed Heights to the west and the settlement of Mason to the south.
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This is the sole edition of this map. No revisions or reprints were ever made.
1891 · Wabuska
USGS Topo · 1:125,000
1891 · Wellington
USGS Topo · 1:125,000
1893 · Wellington
USGS Topo · 1:125,000
1894 · Wabuska
USGS Topo · 1:125,000
1948 · Walker Lake
USGS Topo · 1:250,000
1957 · Walker Lake
USGS Topo · 1:250,000
1957 · Wellington
USGS Topo · 1:62,500
1957 · Como
USGS Topo · 1:62,500
1957 · Wabuska
USGS Topo · 1:62,500
1957 · Yerington
USGS Topo · 1:62,500