
Mud Spring Canyon and Speare Canyon dominate this portion of Umatilla County, revealing a landscape defined by sharp drainage patterns and dry washes. The 2014 survey documents a network of rural routes such as Mud Springs Rd and Roumagoux Rd that weave through the high plateau country. This terrain is characterized by its significant elevation changes, with Spikes Gulch and Slusher Canyon serving as notable landmarks in an area dominated by large-scale land divisions. The grid of the Public Land Survey System, including t1n r30e and t1s r30e, provides the primary structure for the few access roads like Co Road 1363 that service this agricultural and ranching interior.
14 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.
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