
The Boulder River flows through this corner of Montana, carving the broad Boulder Valley beneath the high ridges of the Elkhorn Mountains. This 2024 survey documents a landscape of high-elevation ranching and sparse upland settlement, centered on Willow Springs and the secluded Cooney Park. The map details the transition between Jefferson and Broadwater counties, where the terrain is defined by significant peaks like N Fork Lone Mountain and Big Mtn.
17 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.
1886 · Fort Logan
USGS Topo · 1:250,000
1888 · Three Forks
USGS Topo · 1:250,000
1894 · Three Forks
USGS Topo · 1:250,000
1895 · Three Forks
USGS Topo · 1:250,000
1947 · Bozeman
USGS Topo · 1:250,000
1948 · Bozeman
USGS Topo · 1:250,000
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1949 · Radersburg
USGS Topo · 1:62,500
1950 · Devils Fence
USGS Topo · 1:62,500
1950 · Three Forks
USGS Topo · 1:62,500