Unit 72-1

Key navigation features include the Blackfoot Lava Field anchoring the southern boundary and the Blackfoot Reservoir providing a major water landmark. The Columbia River Great Basin Divide runs east-west along the high country, offering excellent glassing vantage points. Named passes—Devils Gate, Georgetown Summit, Tenmile Pass, and Swaps Pass—serve as natural travel corridors and gathering zones.

Swan Lakes and the cluster of smaller reservoirs (Gronewell Lake, Burchett Lake, Chesterfield Reservoir) offer reliable water reference points for orientation throughout the unit.

The unit's median elevation around 6,200 feet places it firmly in high-desert sagebrush country with scattered conifer stands. Lower basins—The Hole, Big Basin, Rattlesnake Basin, and Huckleberry Basin—offer open sagebrush and grassland terrain ideal for glassing. Upper reaches including the Aspen Range, Ninety Percent Range, and ridgelines like Windy Ridge and Sawmill Ridge support light timber stands and transition to more forested slopes.

This vertical relief creates habitat diversity in relatively modest elevation change, with juniper and aspen scattered across otherwise open country.

Over 846 miles of roads create a well-connected unit with good access from multiple towns (Henry, Georgetown, Conda, Alexander, Chesterfield). The extensive road network means most accessible basins and lower ridges receive moderate to heavy pressure during season. Concentrated access points at major passes and reservoir areas attract predictable hunter traffic. Hunters willing to hike into higher, less-roaded ridges and remote basins—particularly around Long Ridge, Corral Creek Ridge, and the northern reaches—can find quieter country away from main corridors.

Unit 72-1 occupies portions of Bingham and Caribou counties in southeastern Idaho, anchored by the Blackfoot Lava Field to the south and bounded by the Columbia River Great Basin Divide to the east. The unit spans from Henry and Georgetown in the west to the Chesterfield Range and Soda Springs Hills in the east, covering high-elevation basins and ridgelines typical of the Snake River Plain's northeastern transition zone. The terrain sits well above 5,000 feet throughout, creating distinct seasons and predictable wildlife movement patterns across elevation bands.

Blackfoot Reservoir dominates the unit's water resources, supplemented by smaller reservoirs (Twentyfour Mile, Chesterfield, Cranes, Lakey). Swan Lakes provide reliable secondary water sources. The Little Blackfoot River and its tributaries—Tenmile Creek, Dry Fork, Coyote Creek, and Trail Creek—offer seasonal flow. Numerous named springs including Sulphur Spring, Red Pine Spring, and Cold Spring provide dependable sources for higher elevations.

Water distribution is moderate; while basins can dry out mid-season, strategic spring locations and reservoirs support extended hunts.

Unit 72-1 holds white-tailed deer adapted to high-elevation sagebrush and scattered timber habitat. Early season finds deer distributed across open basins and sage flats, accessible via main roads and short hikes. As temperatures cool and pressure increases, deer shift to timber stands on ridges and canyon breaks—particularly the Aspen Range, Chesterfield Range, and ridge systems east of the divide.

Late season concentrates deer around reliable water (reservoirs, springs) in lower basins. The extensive road system favors glassing-and-stalking tactics from vehicle or ridgetop vantage points, with success dependent on covering country methodically rather than hunting specific hotspots.