The Middle Fork Boise River serves as the central artery for this remote portion of the Boise National Forest in Elmore County. The landscape is defined by the steep drainage basins of Phifer Cr, Swanholm Cr, and Black Warrior Cr as they descend toward the river valley. Human presence is concentrated near the river corridor, where the Weatherby USFS Airport provides essential backcountry access for forest management and fire services. The elevation reaches its heights at West Warrior Peak in the north, looking down over a network of service roads including Swanholm Rd and Middle Fork Rd. This map reveals the intricate water network supporting the Boise River basin, from smaller tributaries like Dutch Cr and Hot Cr to the larger forks that have long shaped the hydrology of southern Idaho.
25 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.
1894 · Rocky Bar
USGS Topo · 1:125,000
1955 · Hailey
USGS Topo · 1:250,000
1959 · Hailey
USGS Topo · 1:250,000
1962 · Hailey
USGS Topo · 1:250,000
1964 · Little Trinity Lake
USGS Topo · 1:24,000
1964 · Cayuse Point
USGS Topo · 1:24,000
1964 · Rocky Bar
USGS Topo · 1:24,000
1972 · Bear River
USGS Topo · 1:24,000
1972 · Swanholm Peak
USGS Topo · 1:24,000
1972 · Phifer Creek
USGS Topo · 1:24,000