Helena National Forest dominates this mountain landscape, where the headwaters of the Blackfoot River gather from numerous drainages. The terrain is defined by steep elevation changes, rising toward Crater Mtn in the east and dropping into deep ravines like Swede Gulch and Rochester Gulch. The hydrology of the area is particularly complex, featuring the Grosfield Ditch and the convergence of Landers Fork with other mountain streams.
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1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Coopers Lake
USGS Topo · 1:125,000
1903 · Helena
USGS Topo · 1:250,000
1943 · Hogan
USGS Topo · 1:125,000
1947 · Butte
USGS Topo · 1:250,000
1955 · Choteau
USGS Topo · 1:250,000
1957 · Choteau
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000