
Thavis (Site) and Mack (Site) represent the former settlement footprint along the border of Washington-Adams Co in this 1981 survey. The landscape is defined by the ephemeral water systems of Union Pacific Creek and Coyote Lake, where numerous wells such as Well 480 and Well 458 indicate a continued reliance on groundwater for the local cattle industry. A distinctive Corral near the Ralston Road and Thavis site underscores the agricultural utility of the region.
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This is the sole edition of this map. No revisions or reprints were ever made.
1923 · Washtucna
USGS Topo · 1:62,500
1925 · Washtucna
USGS Topo · 1:62,500
1950 · Benge
USGS Topo · 1:62,500
1952 · Benge
USGS Topo · 1:62,500
1953 · Walla Walla
USGS Topo · 1:250,000
1953 · Ritzville
USGS Topo · 1:250,000
1958 · Walla Walla
USGS Topo · 1:250,000
1959 · Ritzville
USGS Topo · 1:250,000
1964 · Macall
USGS Topo · 1:24,000
1964 · Marengo
USGS Topo · 1:24,000