
The Touchet River valley serves as the primary corridor for settlement and industry on the border of Walla Walla Co and Columbia Co. Small rural clusters like Huntsville, Dumas, and Varna follow the river's path, reflecting the region's agricultural and timber-based economy. Evidence of early industry remains visible at the Dayton-Lumber Company Mill-Pond, while local aviation is centered at the Touchet Valley Airport.
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1919 · Walla Walla
USGS Topo · 1:125,000
1921 · Walla Walla
USGS Topo · 1:125,000
1937 · Pomeroy
USGS Topo · 1:96,000
1942 · Pomeroy
USGS Topo · 1:125,000
1953 · Walla Walla
USGS Topo · 1:250,000
1955 · Pullman
USGS Topo · 1:250,000
1958 · Pullman
USGS Topo · 1:250,000
1958 · Walla Walla
USGS Topo · 1:250,000
1966 · Dixie
USGS Topo · 1:24,000
1966 · Coppei
USGS Topo · 1:24,000