
Lemhi Valley forms the high-altitude backdrop for this late 20th-century survey along the Idaho Montana state line. The Continental Divide serves as the primary boundary here, separating Beaverhead National Forest from the Targhee National Forest and the Dubois Ranger District. The terrain is defined by a complex drainage network, where headwaters such as Eighteenmile Creek and Cottonwood Creek flow through deep-cut valleys. Near the eastern edge, a Scenic Trail follows the spine of the divide, offering a glimpse into the recreation-focused land management of the era.
24 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.
1955 · Dubois
USGS Topo · 1:250,000
1956 · Morrison Lake
USGS Topo · 1:62,500
1956 · Nicholia
USGS Topo · 1:62,500
1957 · Scott Peak
USGS Topo · 1:62,500
1958 · Dubois
USGS Topo · 1:250,000
1965 · Island Butte
USGS Topo · 1:24,000
1980 · Leadore
USGS Topo · 1:100,000
1983 · Dubois
USGS Topo · 1:100,000
1987 · Eighteenmile Peak
USGS Topo · 1:24,000
1987 · Morrison Lake
USGS Topo · 1:24,000