Thompson Falls occupies a strategic position along the north bank of the Clark Fork, where civil infrastructure meets the wilderness of the Lolo National Forest. The town's grid is anchored by the Sanders County Courthouse and extends toward the Thompson Falls Reservoir, which is spanned by the Main Channel Bridge and Dry Channel Bridge. Genealogists will find the Wild Rose Cem and the Veterans of Foreign Wars Cem situated on the eastern edge of the settlement near Grizzly Dr. Beyond the town, the topography rises sharply toward Clark Mtn and Elk Point, reflecting the region's mining and timber heritage through features like Gold Rush Gulch and various forest service road networks. The Thompson Falls Airport sits on a plateau south of the river, highlighting the area's modern connectivity within this complex river valley.
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1918 · St Regis
USGS Topo · 1:125,000
1919 · St. Regis
USGS Topo · 1:125,000
1937 · Thompson Falls
USGS Topo · 1:125,000
1937 · Thompson Falls
USGS Topo · 1:62,500
1956 · St Regis
USGS Topo · 1:62,500
1956 · Wallace
USGS Topo · 1:250,000
1957 · Thompson Falls
USGS Topo · 1:62,500
1957 · Haugan
USGS Topo · 1:62,500
1960 · Wallace
USGS Topo · 1:250,000
1964 · Eddy Mountain
USGS Topo · 1:24,000