
The Umatilla National Forest defines this high-elevation landscape in Umatilla County, where the headwaters of the N Fork Walla Walla River and Mill Creek carve through the plateau. This 2020 survey documents a transition between active forest management and conservation, notably within the protected Mill Creek Watershed in the north. The area is characterized by named flats and clearings like Little Meadows and Big Meadows, which historically served as vital landmarks for travel through the heavy timber. A network of primitive routes and footpaths, including the Indian Ridge Trail and Tiger Ridge Trail, trace the high spines of Low Ridge and Indian Ridge. Distinctive geological formations like The Horseshoe and Yellow Jacket Point provide anchor points for understanding the drainage patterns and physical geography of the Blue Mountains region.
31 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.
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 · Pendleton
USGS Topo · 1:250,000
1953 · Walla Walla
USGS Topo · 1:250,000
1955 · Pullman
USGS Topo · 1:250,000
1955 · Grangeville
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1958 · Pullman
USGS Topo · 1:250,000