The Continental Divide, doubling as the border between Montana and Idaho, carves a high path through this 2017 survey. This high-altitude landscape is shared by the Bitterroot National Forest on the eastern slopes and both the Clearwater National Forest and Nez Perce National Forest to the west. The terrain is defined by dramatic ridgelines such as Hidden Creek Ridge and Printz Ridge, leading to prominent summits including Blodgett Mtn and Shattuck Mtn. Glacial basins hold numerous alpine water bodies, most notably Fred Burr Lake, Blodgett Lake, and Tadpole Lake. Steep canyons feed drainage systems like Big Sand Cr and Mill Cr, illustrating the complex hydrology of the Northern Rockies. The placement of Blodgett Pass indicates a key natural crossing point between Ravalli Co and Idaho Co amidst this alpine wilderness.
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This is the sole edition of this map. No revisions or reprints were ever made.
1901 · Hamilton
USGS Topo · 1:125,000
1911 · Lolo
USGS Topo · 1:250,000
1913 · Lolo
USGS Topo · 1:250,000
1956 · Hamilton
USGS Topo · 1:250,000
1959 · Hamilton
USGS Topo · 1:250,000
1960 · Hamilton
USGS Topo · 1:250,000
1964 · Hamilton
USGS Topo · 1:250,000
1964 · Tenmile Lake
USGS Topo · 1:24,000
1964 · Ward Mountain
USGS Topo · 1:24,000
1966 · Blodgett Mtn
USGS Topo · 1:24,000