
The Continental Divide zigzags through this mid-century landscape, separating the high peaks of the Lewis and Clark Range from the ranching country to the east. In the early 1960s, the town of Choteau serves as a regional hub where the Great Northern rail line terminates, supporting a series of agricultural settlements including Bynum, Farmington, and Augusta. This era shows a heavily managed water system essential for the eastern plains, with the Gibson, Pishkun, and Bynum reservoirs capturing mountain runoff for irrigation.
78 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Great Falls
USGS Topo · 1:250,000
1886 · Fort Logan
USGS Topo · 1:250,000
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:250,000
1902 · Ovando
USGS Topo · 1:125,000
1903 · Saypo
USGS Topo · 1:125,000
1903 · Coopers Lake
USGS Topo · 1:125,000
1903 · Bonner
USGS Topo · 1:125,000
1903 · Helena
USGS Topo · 1:250,000