Unit 71
Mountain terrain spanning rolling ridges and sagebrush benches between the Snake River and state line.
Hunter's Brief
Unit 71 covers rolling mountain country in southeast Idaho, anchored by the Portneuf and Pocatello Ranges with elevations flowing from lower sagebrush benches to forested ridges. A decent network of roads and ranch roads provides reasonable access from Interstate 15 and Highway 26 corridors, though much of the interior remains moderately remote. Moose hunting focuses on scattered water sources and riparian drainages. This is moderate-complexity country—navigable but requiring effort to find untouched terrain.
- 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
Mount Putnam and Bonneville Peak serve as primary visual references for navigation across the rolling terrain. The Portneuf Range and Pocatello Range define the major ridgeline systems. Inkom Pass, Bennetts Pass, and Inman Pass provide key navigation points and potential access corridors.
Horse Lakes offers a reliable landmark in the upper country. Pebble Creek, Sawmill Creek, and the various drainages flowing north and south serve as navigation guides through the valleys. These features help orient within country that can feel featureless in the sagebrush sections.
Elevation & Habitat
The unit spans medium elevations with rolling terrain throughout. Sagebrush benches and agricultural valleys in the lower portions transition into scattered ponderosa and Douglas-fir stands on the ridges and upper slopes. The Portneuf and Pocatello Ranges form the backbone, with moderate forest cover interspersed with open draws and grass parks.
Elevation changes are gradual rather than dramatic—expect rolling slopes and bench terrain more than steep mountainsides. The landscape reads as big-country foothills rather than true high peaks.
Access & Pressure
Nearly 1,000 miles of roads crisscross the unit, creating a connected network. Highway 26 and Interstate 15 provide primary access corridors, with secondary ranch roads and maintenance routes branching into the interior. This road density keeps the unit accessible and moderately hunted—you can get in easily, but that also means pressure is distributed.
Strategic hunters ignore the roadside country and push into the quieter drainages and ridges between the main access routes. Most pressure concentrates near the populated places and along the major highways.
Boundaries & Context
Unit 71 encompasses portions of Bannock, Bingham, and Caribou Counties in southeast Idaho, bounded by U.S. Highway 26 to the north, Interstate 15 and Highway 30 to the west, and the Idaho-Wyoming state line to the east. The South Fork Snake River system and Portneuf River form natural boundaries and travel corridors. The unit sits in a transition zone between the Great Basin's agricultural valleys and the higher mountain country, with multiple access points from small towns like Bancroft and Chesterfield.
This is a substantial piece of country that requires careful navigation to hunt effectively.
Water & Drainages
Water is limited and concentrated along specific corridors—this is critical planning information. The Portneuf River and South Fork Snake River system anchor the western and southern boundaries and support riparian hunting. Pebble Creek, Sawmill Creek, Clear Creek, and Crane Creek are the most reliable interior drainages.
Multiple named springs exist (Big Willow, Big Horse, Cold Spring, King Creek Spring among others) but should be verified as reliable before depending on them. Early season often means hunting near the major river systems; later seasons require knowing which springs hold water.
Hunting Strategy
Unit 71 holds moose in the riparian drainages and willowed areas along the Portneuf River, South Fork Snake, and tributary streams. Early season hunting focuses on water-dependent areas and the cooler, higher drainages before heat pushes moose to the river bottoms. Mid-season transitions toward the major water corridors as summer advances.
The rolling terrain allows glassing across the sagebrush benches and open slopes during morning and evening, with detailed scouting of the creek bottoms and willow patches essential. This is a hunt that rewards knowing specific water sources and drainages rather than relying on general terrain knowledge.