
The Umatilla National Forest defines the topography of this corner of the Blue Mountains, where the drainage divides separate significant river systems. Along the western edge, the Mill Creek Watershed serves as a critical conservation zone, while the South Fork Walla Walla River and South Fork Wenaha River cut through the high-elevation terrain. This 2014 survey captures a landscape managed for both timber and water resources, evidenced by the network of forestry routes like Nat For Dev Rd 65. Numerous water sources are documented across the ridges, including Bone Spring, Deduct Spring, and Bear Trap Spring, which have long served as vital points for livestock and wildlife. Distinctive local landmarks such as Milk Shakes and Paradise Ridge provide clear orientation points within this high-country environment at the border of Umatilla and Wallowa counties.
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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