
The Lost River Range and the eastern edge of the Challis National Forest dominate this landscape, where the high mountain terrain transitions into the agricultural expanse of the Big Lost River Valley. A complex network of irrigation infrastructure defines the lower elevations, notably the Hanson Ditch, Burnett Ditch, Fury Ditch, and Angelo Ditch, which demonstrate the valley's managed water system. Running north-to-south along the boundary of Custer and Butte Counties, Pass Creek Rd serves as the primary artery through this high-altitude corridor.
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This is the sole edition of this map. No revisions or reprints were ever made.
1935 · MacKay
USGS Topo · 1:96,000
1935 · Borah Peak
USGS Topo · 1:125,000
1938 · Borah Peak
USGS Topo · 1:125,000
1940 · Mackay
USGS Topo · 1:62,500
1955 · Dubois
USGS Topo · 1:250,000
1955 · Idaho Falls
USGS Topo · 1:250,000
1957 · Hawley Mountain
USGS Topo · 1:62,500
1958 · Dubois
USGS Topo · 1:250,000
1958 · Idaho Falls
USGS Topo · 1:250,000
1960 · Mackay
USGS Topo · 1:62,500