Boulder Valley and the surrounding drainage of the Boulder River define this corner of Jefferson County. The map details an intricate irrigation system critical to the local valley economy, including the Casey Ditch, Murphy Ditch, and Murphy Quaintance Ditch. To the west, the terrain rises sharply toward the timbered slopes of the Deerlodge National Forest, where landmarks like Bull Mtn and Wilson Ridge overlook the deep incisions of North Dunn Canyon and Dunn Canyon. Significant for family researchers, the Boulder Valley Cem is situated near Quinn Cr, providing a genealogical anchor for the area. Recreational and geographical interests are noted at Quaintance Park and Long Park, while several natural water sources such as McKenna Spring and Long Park Spring suggest the hydrological importance of this montane landscape.
35 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
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1893 · Dillon
USGS Topo · 1:250,000
1894 · Three Forks
USGS Topo · 1:250,000
1895 · Three Forks
USGS Topo · 1:250,000
1899 · Boulder
USGS Topo · 1:125,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000