
The Umatilla River carves a significant course through this landscape, defining the industrial and transportation corridor west of Pendleton. The river valley acts as a natural conduit for local infrastructure, where the settlement of Rieth and the eponymous Barnhart are situated along its banks. These communities are linked by historical crossings like Rieth Bridge, while the surrounding plateau is marked by deep drainage systems such as Coombs Canyon and Stage Gulch. Higher elevations like Rieth Ridge overlook the valley, where a network of county roads including Peebler Rd and Stage Gulch Rd service the agricultural uplands. This 2020 survey illustrates how the rugged geography of the Umatilla Basin dictates the placement of transit routes and small outposts in this part of Umatilla County.
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This is the sole edition of this map. No revisions or reprints were ever made.
1908 · Umatilla
USGS Topo · 1:125,000
1935 · Pendleton
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1962 · Stanfield SE
USGS Topo · 1:24,000
1966 · Mc Kay Reservoir
USGS Topo · 1:24,000
1966 · Holdman
USGS Topo · 1:24,000
1966 · Holdman SE
USGS Topo · 1:24,000
1966 · Pendleton
USGS Topo · 1:24,000
1966 · Barnhart
USGS Topo · 1:24,000