
Finn sits at a crossroads within the Avon Valley, serving as a central point for a landscape defined by ranching and timber production. The map details a complex drainage system flowing toward Nevada Creek, with Halfway Creek and Washington Creek carving paths through the valley floor. To the north, the terrain rises sharply into the Helena National Forest, where high-elevation landmarks like Dalton Mtn and the Old Dalton Mt Lookout overlook a network of historic trails. Local routes such as the Ogden Mountain Trl and Helmville - Gould Trl traverse numerous gulches, including California Gulch and McClellan Gulch, illustrating the area's history of movement through the high country. This document preserves the modern footprint of the Lewis and Clark and Powell County boundary as it follows the high ridgelines.
34 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.
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000
1958 · Avon
USGS Topo · 1:62,500
1958 · Garrison
USGS Topo · 1:62,500
1960 · Butte
USGS Topo · 1:250,000
1962 · Butte
USGS Topo · 1:250,000