Unit 30
Beaverhead
High-country Lemhi River drainage with rolling ridges, alpine basins, and mountain passes connecting remote drainages.
Hunter's Brief
Unit 30 encompasses the Lemhi River drainage north of Highway 28, featuring rolling mountain terrain that transitions from mid-elevation valleys to high alpine ridges. The country is moderately forested with scattered open basins and numerous creeks providing reliable water access. Road connectivity allows staging from the Lemhi Valley, though terrain complexity means navigation beyond main drainages requires map work. This is working country—not extreme, but with enough relief and distance to separate pressure-savvy hunters from casual access points.
- Compact: under 200 sq mi
- Moderate: 200 - 800 sq mi
- Vast: over 800 sq mi
- Few: under 25%
- Some: 25 - 60%
- Most: over 60%
- Limited: under 0.7 mi/mi² (backcountry)
- Fair: 0.7 - 1.5 mi/mi²
- Connected: over 1.5 mi/mi² (well-roaded)
- Flat: under 20% mountains
- Rolling: 20 - 55%
- Steep: over 55%
- Sparse: under 20%
- Moderate: 20 - 50%
- Dense: over 50%
- Limited: under 0.3% area
- Moderate: 0.3 - 2% area
- Abundant: over 2% area
Terrain Deep Dive
Landmarks & Navigation
Sacajawea Peaks dominate the skyline as a major navigation reference and glassing point. Bannock Pass and Lemhi Pass at the ridgeline offer historical travel corridors and high vantage points for long-range observation. Gould Basin sits as a notable alpine feature; Geertson Lake provides a defined water landmark.
Goat Mountain, Goldstone Mountain, and Mineral Hill offer secondary reference points across the unit. Multiple named creeks—Reese, Pratt, Salt, and Sandy among them—serve as drainage corridors that funnel game movement and guide backcountry navigation. These features anchor orientation in terrain complex enough (7.2/10) that navigation discipline matters.
Elevation & Habitat
Terrain rises from rolling sagebrush and aspen valley floors around 4,000 feet through ponderosa and Douglas-fir transition zones into higher elevation spruce-fir country and alpine basins near 10,300 feet. The moderate forest coverage suggests a mix of open ridges and timbered drainages rather than continuous canopy, creating a patchwork of glassing opportunities and travel corridors. Mid-elevation parks and benchlands are interspersed throughout, offering both thermal transition zones and natural staging areas.
Water-dependent species will concentrate near creeks in drier seasons, while higher elevations provide summer range and cooler-season refuges.
Access & Pressure
Connected road access via Highway 28 and valley roads provides straightforward staging from the north fork area and Lemhi Valley. However, 760 miles of road with limited density across the unit means most terrain beyond immediate roadside is accessed on foot. This disconnect between road connectivity and actual penetration creates opportunity—the rolling terrain and multiple drainages allow pressure-conscious hunters to move past popular trailhead areas into less-visited country.
Terrain complexity prevents easy bushwhacking; planned creek-bottom and ridge routes reward those studying maps beforehand.
Boundaries & Context
Unit 30 occupies the Lemhi River drainage in Lemhi County, bounded by State Highway 28 on the south and west, the Idaho-Montana state line on the north and east, and extends from the town of North Fork upstream to encompass the upper Lemhi system. The unit captures a substantial elevation range—from mid-elevation valley bottoms to alpine peaks above 10,000 feet—creating distinct habitat zones across roughly 760 miles of accessed terrain. The Lemhi Valley serves as the primary staging area, with North Fork and Lemhi providing logistics access.
Water & Drainages
The Lemhi River forms the backbone drainage, with substantial tributary systems including Reese Creek, Pratt Creek, and multiple forks of Sandy Creek providing reliable water corridors. Despite a 'Limited' water badge, numerous springs dot the higher country—Wagonbox, Coal Mine Gulch, Eckersell, Bohannon, and others—indicating perennial sources in upper basins. Lower elevations and drier gulches between drainages (Dry Gulch, Little Dry Gulch, Big Dry Gulch) may be water-scarce, requiring hunters to plan routes along major creeks or known springs.
Water availability shapes both hunting strategy and safe backcountry access.
Hunting Strategy
Unit 30's rolling topography and moderate forest coverage work equally well for glassing and stalking. The elevation range supports multiple species and seasonal movements—higher basins and ridges attract animals during early season, while mid-elevation transition zones concentrate game during rut, and valley bottoms and lower drainages hold pressure. The network of named creeks provides natural travel corridors for both hunters and game; working high drainages and sidehill parks rewards early-morning and late-day glassing.
Midday hunters benefit from the mix of timbered cover and open parks. Water is concentrated enough that strategic positioning near springs or creek confluences can intercept movement patterns.