Unit 312

The Bridger Range and Horseshoe Hills dominate northern terrain, with Bridger Divide providing a natural ridgeline for orientation and glassing. The Jefferson River drainage anchors the western portion—a major navigation and water corridor. Sacagawea Peak and Pomp Peak offer high-country reference points.

Wallrock and the surrounding Wallrock Basin provide distinctive terrain features in the central unit. Little Horseshoe Basin and Fairy Lake area offer focal points for planning. Sixteenmile Creek and its forks provide reliable drainage corridors for accessing mid-country.

The Flathead and Ross passes serve as traditional crossing routes through the ridgelines.

Terrain spans from lower valley floors near 3,900 feet to high ridges above 9,600 feet, creating distinct habitat zones. Lower elevations feature sagebrush-grassland parks and willow-riparian corridors, while mid-elevations transition through scattered ponderosa pine and Douglas-fir stands. Upper slopes and ridges enter denser forest with spruce-fir associations on the highest peaks.

The moderate forest cover creates a mosaic of open country and timbered draws ideal for spotting game across multiple terrain types. Elevation change is significant but gradual, following natural drainage patterns.

Connected road networks total over 2,100 miles, providing fair accessibility throughout the unit despite the extensive private land base. The Rocky Mountain-Springhill Road, Penwell Bridge Road, and routes through Logan and Manhattan provide main entry corridors. Road density is substantial, meaning most country is within reasonable hiking distance from vehicle access.

However, private ownership means many good spots require permission. Pressure concentrates near towns and easily accessed drainages; remote upper-elevation country sees less hunting traffic. Early and late season hunters can find solitude in less-obvious draws and side canyons.

Unit 312 encompasses the western portion of Hunting District 312, bounded on the east by the Rocky Mountain/Springhill Road corridor running from Olie Canyon southeast to Penwell Bridge Road. The unit sits in the foothills and intermountain valleys between the Bridger Range to the north and the Gallatin Range to the south, encompassing the drainages and basins between these major ridges. The area includes historic ranching communities including Logan, Manhattan, and Clarkston, with much of the unit containing private working lands intermixed with public access opportunities.

This is established ranch and agricultural country with deep settlement history.

The Jefferson River forms the western boundary and primary water source, a major drainage supporting moose habitat throughout its course. Sixteenmile Creek and its north and middle forks drain the northern section with reliable flow. Bullrun Creek, Mill Creek, and the South Fork Ross Creek provide secondary drainages with dependable water.

Numerous springs dot the unit including Rowland, White, Dunbar, and Bullrock springs, critical for water-dependent species during dry periods. Cottonwood and Lyman Creek reservoirs offer storage options. The creeks and riparian zones are primary wildlife corridors in this rolling country.

Moose are the primary species for this unit, found in willow-dominated riparian habitat along major creeks and the Jefferson River. Focus hunting around Sixteenmile Creek drainages and tributary bottoms where willows provide critical browse. The Jefferson River corridor, particularly in lower-elevation sections, offers prime early-season opportunities.

Mid-elevation draws with aspen and willow regeneration support moose movement between valley and foothill zones. Use high ridges—Bridger Divide, Battle Ridge, Elkhorn Ridge—for glassing into drainage heads and basins during rut periods. Water sources concentrate animals; scout springs and creek crossings for sign.

The terrain's rolling character allows multiple glassing opportunities from different vantages.