Unit 310

The Pioneer Mountains to the west and the higher ridges around Alturas, Sawtooth, and Maurice Mountains provide navigation anchors and glassing vantage points. Nez Perce Ridge and Badger Ridge offer elevated terrain for spotting. Major valleys and drainages like Sheep Canyon, Dry Gulch, and Bear Gulch serve as natural travel corridors.

Named parks—Knoby Park, Crystal Park, and Vipond Park—mark openings where pronghorn congregate. Bannack, the historic mining town, sits at a natural junction point and remains a useful reference for orientation within the unit.

The unit spans substantial elevation change from roughly 5,000 feet in the Wise River and Grasshopper Creek valleys to over 11,000 feet on the high ridges. This elevation range creates distinct habitat zones: lower valley floors support sagebrush and grassland openings, middle elevations transition through scattered timber and larger parks, and the higher ridges become increasingly forested with conifer stands. The moderate forest coverage across the unit means open parks, meadows, and sage flats are interspersed with ponderosa and Douglas-fir stands rather than solid forest blocks, creating good edge habitat and movement corridors.

The unit has a well-developed road network with over 1,200 miles of roads providing good connectivity across the rolling terrain. Route 278 and Route 43 offer main access corridors, with I-15 providing alternate entry near Divide. Numerous ranch roads branch throughout the unit, allowing hunters to position vehicles near hunting country, though some roads may be gated or private.

The combination of road access and moderate terrain means the unit can absorb hunters without being overly remote, but its size means pressure can be distributed across considerable country. Learning the road network and identifying less-obvious approach routes improves hunting efficiency.

Unit 310 encompasses portions of Beaverhead, Silver Bow, and Madison Counties, bounded by the Grasshopper-Wise River Road on the west, Route 43 and Interstate 15 on the north and east, and Grasshopper Creek on the south. This is a substantial unit centered on the transitional country between the Pioneer Mountains to the west and the Yellowstone Plateau to the east. Route 278 provides the main western access through Wise River, while I-15 near Divide offers eastern entry points.

The unit includes historic mining and ranching communities like Bannack and Divide, which serve as natural staging areas for hunting access.

Water is limited and scattered, a critical consideration for pronghorn hunting in this unit. Wise River runs along the western side providing reliable flow, while Grasshopper Creek defines the southern boundary. Beyond these main waterways, the unit relies on numerous small springs including McDowell Spring, Trusty Gulch Spring, Old Faithful Spring, and Upper Cattle Gulch Spring, plus scattered small lakes like Vera Lake, Cherry Lake, Scott Lake, and Crescent Lake.

Irrigation ditches (Willow Creek, Wise River, and others) may hold water seasonally. Knowing spring locations and which water sources persist through the season is essential for predicting pronghorn movement patterns.

Unit 310 is pronghorn country on a rolling high-elevation plateau. The mix of sagebrush flats, open parks, and moderate timber creates good pronghorn habitat with multiple movement corridors. Successful hunting depends on glassing from high vantage points (ridges, park edges) to locate animals, then planning stalks across open terrain—pronghorn visibility and speed make careful approach critical.

Water scarcity makes springs and small lakes valuable during dry seasons; hunting near reliable water sources concentrates opportunities. Early season may find pronghorn scattered across the higher parks; as conditions change, they shift toward lower valleys and toward reliable water sources. Road access allows hunters to cover ground efficiently, but the terrain complexity means taking time to learn drainage patterns and pronghorn movement corridors significantly improves success.