
Speare Canyon and Alkali Canyon dominate this Umatilla County landscape, revealing a deeply eroded terrain where seasonal drainage patterns have carved complex systems into the plateau. The map highlights the intersection of physical geography and rural infrastructure, where routes like Speare Canyon Rd and Alkali Canyon Rd follow the natural contours of the land. Further south, Mud Springs Cnyn Rd and the family-named Roumagoux Rd provide access to the higher elevations and gulches.
17 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
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
1966 · Barnhart
USGS Topo · 1:24,000
1966 · Coombs Canyon
USGS Topo · 1:24,000
1967 · Nye
USGS Topo · 1:24,000
1968 · Echo SE
USGS Topo · 1:24,000
1968 · Echo
USGS Topo · 1:24,000
1968 · Nolin
USGS Topo · 1:24,000