Unit 329
3
Steep mountain terrain spanning Idaho border to Clark Canyon Dam with mixed forest and alpine basins.
Hunter's Brief
HD 329 is rugged country anchored by high ridges and deep valleys between Lemhi Pass and Clark Canyon Reservoir. Elevation swings dramatically from lower river bottoms to alpine terrain above 10,000 feet. Access is connected via Routes 278 and 324, plus a network of secondary roads reaching into major drainages like Grasshopper Creek and Mill Creek. Water is limited outside major creek systems, requiring strategic planning. The steep topography and moderate forest coverage create distinct elevation zones—expect early-season hunting higher up, with animals moving lower as weather breaks.
- 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
Key navigational features include Mount Wallace, Mount Cowen, and Red Mountain as major ridge anchors visible across the unit. Knowles Peak and Arrow Peak serve as reference points for orientation in the northern sections. The Big Hole Divide runs the entire northern boundary and is critical for understanding drainage patterns.
Jewel Lake and Elbow Lake offer reliable visual landmarks in upper basins. Grasshopper Creek and Sixmile Creek drainages are primary travel corridors linking lower and upper country. Chico Hot Springs and Pray provide context for proximity to private lands and civilization.
Elevation & Habitat
Terrain spans dramatically from 4,354 feet along lower drainages to 10,902-foot peaks, with median elevation around 7,146 feet. The unit's steep profile creates distinct habitat zones: lower sage and cottonwood bottoms give way to ponderosa and Douglas-fir slopes in the mid-elevations, transitioning to subalpine forest and alpine meadows at upper elevations. Multiple high basins—Big Pine, East Baldy, Dailey—sit in the 7,500- to 8,500-foot range and hold productive moose habitat.
Ridgeline terrain is exposed and windswept, with extensive areas of timber-meadow mosaic typical of southwestern Montana high country.
Access & Pressure
The unit has connected access via Routes 278 and 324, with secondary roads pushing into major drainages like Grasshopper Creek and the Skinner Meadows-Jackson drainage. Interstate 15 provides easy access to the southern portion but also likely concentrates pressure near Clark Canyon. The well-developed road network makes the unit accessible, but steep terrain limits easy penetration off main corridors.
Higher basins and ridgeline country see less pressure due to terrain difficulty. Pray, Chico, and Bannack are gateway communities, but the 8.2 terrain complexity score means many hunters won't venture far from drivable access.
Boundaries & Context
Unit 329 occupies the Horse Prairie North area of Beaverhead County, spanning from Clark Canyon Dam northwest to the Montana-Idaho border at Lemhi Pass. The eastern boundary follows Interstate 15 and the Bannack-Grant Road, while the northern edge runs along the Bloody Dick-Big Hole Divide. The western perimeter follows Route 324 and the Trail Creek-Lemhi Pass Road down to the state border.
This positioning makes the unit a bridge between lower valley floors and high-country alpine terrain, with roughly 579 miles of road infrastructure threading through the complex topography.
Water & Drainages
Water is limited to creek systems and alpine lakes scattered through upper basins. Grasshopper Creek, Sixmile Creek, Mill Creek, and Sheep Creek are the primary reliable water sources, flowing through major valleys used by moose. Smaller creeks including Johnson Creek, McDonald Creek, and Trail Creek provide secondary drainage corridors.
Elbow Lake, Jewel Lake, and several smaller ponds exist in high basins but are seasonal. The limited water outside main creek bottoms concentrates moose in predictable areas—early season in alpine basins near lakes, fall migration down main drainages toward larger water sources.
Hunting Strategy
This is moose country, with habitat spanning lower willow drainages to high-elevation basins and timber. Early season strategy focuses on alpine and subalpine meadows where moose congregate around Jewel Lake, Elbow Lake, and Dailey Basin—elevation-induced migration pushes animals higher in September. Mid-season, look for bulls in timber-meadow transitions along Mill Creek and Grasshopper Creek.
As October arrives, dropping temperatures and snow push moose downslope toward lower creek bottoms and willows, particularly in Paradise Valley and around Sixmile Creek. The steep terrain rewards glassing from high vantage points like the ridgelines above major basins. Water scarcity means moose must use predictable corridors and gathering areas—focus on known drainages and alpine basins.
The complex topography demands good physical condition and route-finding skills.