Unit 310
3
High-country moose habitat spanning timbered ridges and alpine basins between Wise River and Interstate 15.
Hunter's Brief
This is mountainous terrain dominated by dense forest and rolling ridgetops in the 8,000 to 11,000-foot range, with scattered alpine basins and meadows broken by creeks and small lakes. Access is straightforward via the Grasshopper-Wise River Road corridor and Route 43, with 392 miles of roads providing decent connectivity throughout. Water sources are modest—primarily creeks and high lakes rather than abundant springs—making drainage access critical for moose hunting. The unit's moderate size and existing road network mean you won't be alone, but the forested terrain and elevation variation offer pockets to escape pressure.
- 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
Several named ridges anchor the terrain: Elkhorn, Wapiti, Blizzard, and Snowflake ridges provide major north-south divides and glassing corridors. Lincoln Mountain and Marble Point stand as recognizable summits for navigation. The system of named basins—Sunlight, Sage, Carrot, Onion—offer open parks and potential water sources.
A chain of high lakes including Ramshorn, Turquoise, Park, and Lightning lakes marks the upper drainages and provides camp reference points. Buffalo Horn Pass offers a high crossing between basins. These features create natural hunting zones and help orient movement through the forested terrain.
Elevation & Habitat
Terrain transitions from river bottomland around 6,000 feet through dense conifer forests on rolling slopes up to high ridges and alpine basins exceeding 11,000 feet. The median elevation of roughly 8,000 feet places most of the unit in prime subalpine forest—thick lodgepole and spruce-fir interspersed with open parks and meadows. Upper elevations support sparser alpine vegetation and exposed ridges ideal for glassing, while lower drainages feature more open forest structure.
This elevation band creates reliable moose habitat across the unit, with seasonal movements between lower winter range and higher summer range.
Access & Pressure
The 392 miles of roads create a well-connected corridor system, particularly along the Grasshopper-Wise River Road, Route 43, and interior forest service routes reaching into major drainages. This connected access means the unit absorbs hunting pressure from nearby towns and I-15 traffic. However, the terrain complexity (6.9/10) and dense forest create natural funneling into specific drainages and roads.
Elk hunters and general hunters using roads will concentrate on accessible valleys and ridgetops. Smart moose hunters should focus on the higher drainages and basin parks where road density is lower and human traffic more dispersed.
Boundaries & Context
Unit 310 occupies the mountains between the Grasshopper and Wise River valleys in southwestern Montana, bordered by I-15 on the east and Route 278 on the south and west. The unit straddles Beaverhead, Silver Bow, and Madison Counties, with significant elevation changes from lower river corridors to high alpine terrain. Wise River town to the north and the Divide area provide logical staging points.
The contained geography—defined clearly by roads, highways, and creek systems—creates a defined hunting area with multiple valley and ridge systems to explore, roughly 40 miles north-to-south and similar in width.
Water & Drainages
The Grasshopper Creek system forms the unit's western boundary and major water corridor, while Wise River drains the northern portion. Interior drainages include Taylor Creek, Canyon Creek, and the West Fork Gallatin River system moving through the unit. Smaller creeks—Sage, Twin Cabin, Wapiti—cut through the middle terrain.
Snowflake Springs and scattered high lakes (Ramshorn, Turquoise, Buffalo Horn Lakes) provide water in upper basins. While not abundant, these sources are distributed enough to support movement through the unit. Summer water is more reliable; late-season hunting may require knowledge of springs and seeps, particularly on ridges between drainages.
Hunting Strategy
Unit 310 is moose country, with reliable populations across the timbered terrain and alpine basins. Early season hunting targets moose moving into high parks and meadows—focus on Sunlight, Sage, and Carrot basins where water and open browse meet forest cover. Rut hunting (mid-September) centers on lower drainages and valley bottoms where moose congregate; Taylor Creek and the West Fork Gallatin corridors are primary zones.
Late season shifts lower as moose retreat from snow—lower Grasshopper and Wise River drainages become productive. The forested terrain demands glassing from ridges and creeks at dawn/dusk rather than long-range spotting. Use roads for access but plan to hike away from them; most pressure follows roads into obvious drainages.