The Lemhi Range is a rugged mountain range spanning northeastern Idaho and west-central Montana, known for **alpine peaks**, **high alpine passes**, and **sagebrush valleys**.

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Geography

ContinentNorth America
RegionNorthern Rockies
SubregionNorthern Rockies / Great Basin transition
CountryUnited States
StateIdahoMontana
CountyLewis and Clark County (ID)Beaverhead County (MT)
DistrictLemhi County
TimezoneAmericaBoise
Latitude45.6
Longitude-113.5
Maps
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The Lemhi Range forms a rugged barrier across northwestern Montana and south-central Idaho, separating the Salmon River basin to the west from the Big Hole and Missouri drainages to the east. At its core are **sharp alpine peaks** exceeding 3,600 meters (12,000 ft)**, accessible via high-country passes and cross-range routes. Valley floors downstream are dominated by **sagebrush steppe** and small agricultural communities, while forests of **subalpine fir**, **whitebark pine**, and **deciduous riparian trees** rise toward the range's ridgelines.

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