
The winding Missouri River corridor north of the state capital dominates this landscape, showing the complex interaction of early 1970s mining operations and water management systems. Within the Helena National Forest, the map records significant resource extraction at the Eldorado Strip Mine and the Golden Charm Mine, alongside numerous unnamed Prospects scattered across the surrounding gulches. Small settlements like York and Lakeside are documented during a period when the river's flow was harnessed for both power and irrigation.
37 named features on this map. Tap any name to fly to it.
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2 editions found
1886 · Fort Logan
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:62,500
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1950 · Canyon Ferry
USGS Topo · 1:62,500
1950 · East Helena
USGS Topo · 1:62,500
1958 · White Sulphur Springs
USGS Topo · 1:250,000
1961 · White Sulphur Springs
USGS Topo · 1:250,000
1962 · Upper Holter Lake
USGS Topo · 1:24,000
1962 · Hogback Mountain
USGS Topo · 1:24,000
1962 · Nelson
USGS Topo · 1:24,000