
The Umatilla National Forest contains a complex network of ridgelines and water sources, prominently featuring the Mill Creek Watershed and its strictly defined Intake Watershed Boundary. This high-elevation terrain is defined by dramatic elevation changes between Broken Ridge and the deep incisions of Henry Canyon. The landscape serves as a critical headwater region where the North Fork Walla Walla River and South Fork Walla Walla River begin their descent.
28 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