
Matney Flat anchors this high-elevation landscape in Gilliam County, where the plateau is deeply incised by a network of drainage systems. The northern reaches are defined by Sixmile Cr and several named ravines, including Monahan Canyon and Carnine Canyon. Historical land use is evidenced by the Old Railroad Grade in the northwest, suggesting former transport routes through this dissected terrain.
33 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1916 · Condon
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1953 · The Dalles
USGS Topo · 1:250,000
1956 · The Dalles
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1957 · The Dalles
USGS Topo · 1:250,000
1968 · Gooseberry
USGS Topo · 1:24,000
1969 · Lonerock
USGS Topo · 1:24,000
1970 · Condon
USGS Topo · 1:24,000
1970 · Salmon Fork
USGS Topo · 1:24,000