
Wallowa National Forest defines this high-elevation landscape, where the Sheep Creek Divide serves as a prominent watershed boundary in the rugged northeastern corner of Oregon. This 2014 survey documents a network of remote ridges and canyons, most notably the steep descent into the Imnaha River canyon on the eastern side of the sheet. The terrain is characterized by long, named ridges such as Grizzly Ridge, Dead Horse Ridge, and Beeler Ridge, which provide natural corridors through the wilderness. These geographical features highlight the isolation of the area, punctuated only by forest access points like Big Sheep Creek Rd and Freezeout Rd. Numerous seasonal and perennial streams, including Big Sheep Cr and Double Cr, carve deep into the plateau, illustrating the complex drainage patterns that feed the larger river systems of the region.
56 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.
1922 · He Devil
USGS Topo · 1:48,000
1954 · Imnaha
USGS Topo · 1:62,500
1954 · Kernan Point
USGS Topo · 1:62,500
1954 · Harl Butte
USGS Topo · 1:62,500
1955 · Grangeville
USGS Topo · 1:250,000
1957 · He Devil
USGS Topo · 1:62,500
1959 · Grangeville
USGS Topo · 1:250,000
1980 · Grangeville
USGS Topo · 1:100,000
1987 · Riggins
USGS Topo · 1:100,000
1990 · Imnaha
USGS Topo · 1:24,000