The Continental Divide serves as the literal and geographic spine of this high-altitude landscape, marking the boundary between Beaverhead National Forest in Montana and Salmon National Forest in Idaho. This remote frontier is defined by a dense network of mountain drainages, most notably Bloody Dick Cr and its numerous tributaries including Eunice Cr, Selway Cr, and Hopps Cr. To the north, Reservoir Lake sits near the headwaters of Lake Cr, providing a critical water source in the high timber. The presence of Pyramid Hill and deep incisions like Hughes Gulch illustrate the dramatic elevation changes common along the Montana-Idaho line. Evidence of human passage is limited to isolated forest routes such as Warm Springs Rd and Bloody Dick Rd, highlighting the area's preservation as a wilderness corridor for both state and national forest management.
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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
1955 · Dillon
USGS Topo · 1:250,000
1956 · Goldstone Mtn
USGS Topo · 1:62,500
1956 · Lemhi
USGS Topo · 1:62,500
1957 · Dillon
USGS Topo · 1:250,000
1958 · Dubois
USGS Topo · 1:250,000
1958 · Dillon
USGS Topo · 1:250,000
1962 · Dillon
USGS Topo · 1:250,000
1965 · Dillon
USGS Topo · 1:250,000
1965 · Lemhi Pass
USGS Topo · 1:24,000