
The Beaverhead River valley serves as the primary corridor for movement and settlement, hosting the city of Dillon and the University of Montana Western. This modern topographic study reveals a landscape heavily defined by agricultural water management, with a dense network of irrigation features such as the West Side Canal, East Bench Canal, and Canyon Ditch branching across the valley floor. To the south, Barretts and the Beaverhead Canyon Gateway mark a narrowing of the terrain where the Union Pacific RR and major roadways converge. The river itself creates a complex riparian environment, winding past named landforms like Smith Island and Lovell Island while receiving tributaries like Rattlesnake Creek and Blacktail Deer Creek. Local history is anchored by the Beaverhead County Courthouse, which stands as a central landmark within the grid of Dillon's street network.
90 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.
1893 · Dillon
USGS Topo · 1:250,000
1952 · Argenta
USGS Topo · 1:24,000
1952 · Burns Mountain
USGS Topo · 1:24,000
1952 · Dalys
USGS Topo · 1:24,000
1952 · Gallagher Mountain
USGS Topo · 1:24,000
1955 · Dillon
USGS Topo · 1:250,000
1957 · Dillon
USGS Topo · 1:250,000
1958 · Dillon
USGS Topo · 1:250,000
1961 · Glen SE
USGS Topo · 1:24,000
1961 · Ashbough Canyon
USGS Topo · 1:24,000