
Upper Holter Lake and the Missouri River corridor dominate this landscape within the Helena National Forest. The geography is defined by the narrow passage of the Gates of the Mountains, where the river carves through limestone cliffs. Local settlement history is represented by the Hilger Ranch and Hilger Well within the broad Hilger Valley, while the southern reaches of the map show the industrial infrastructure of the Hauser Dam and its associated Powerplant. Numerous named gulches and canyons, such as Meriwether Canyon and Sacajawea Mountain, reflect the historical Lewis and Clark expedition's journey through this terrain. The map also detail boat access points like the Gates of the Mountains Boat Club and several designated picnic areas along the water's edge.
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
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:62,500
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1950 · East Helena
USGS Topo · 1:62,500
1950 · Helena
USGS Topo · 1:62,500