Unit 39

Lucky Peak and Mount Heinen provide key visual references and glassing points overlooking major drainages. The South Fork of the Boise River and its tributaries—including James Creek, Chaffee Creek, and multiple unnamed forks—serve as major navigation corridors and water sources. Anderson Ranch Reservoir and Arrowrock Reservoir mark the lower boundary and offer secondary reference points.

The system of ridgelines connecting Banner Ridge, Burns Ridge, and Hungarian Ridge forms the unit's backbone, with numerous named passes and summits (James Creek Summit, Grimes Creek Pass, Clear Creek Summit) providing orienteering checkpoints for navigating steep terrain.

The unit spans nearly 8,000 vertical feet, creating dramatically different environments from low sagebrush and scattered ponderosa near river valleys to high-elevation forests and alpine terrain above 9,500 feet. The majority of huntable terrain sits in the middle elevations where Douglas-fir and mixed conifer forests dominate steep slopes and canyon systems. Lower ridges and canyon bottoms support open ponderosa and scattered brush, while upper slopes transition to spruce-fir forest.

This vertical diversity concentrates elk movement through predictable elevation corridors—understanding which zones hold animals seasonally is critical to effective hunting here.

The connected badge reflects 3,435 miles of roads, primarily Forest Service routes threading through the drainage systems. These roads are often rough and high-clearance vehicles recommended, but they provide legitimate staging points and access to the middle elevations. Most public hunter pressure concentrates along the main drainages and near popular trailheads.

The steep terrain naturally filters pressure away from ridgelines and back-country basins. Hunters willing to hike into remote canyon systems or climb to high ridges encounter significantly less pressure. Early season access may be limited by snow on higher Forest Service roads.

Unit 39 encompasses portions of Ada, Boise, and Elmore Counties in central Idaho, stretching from the Anderson Ranch Dam area northeast to James Creek Summit and encompassing the upper Boise River drainage system. The unit borders Interstate 84 to the south and Highway 21 to the north, creating a geographically defined but topographically complex block. Major geographic anchors include the Danskin and Boise Mountains, which define much of the ridge system.

This vast territory sits between settled valleys and true wilderness, making it a transitional zone where terrain and access patterns significantly influence hunting success.

Water is limited and concentrated along major drainage systems. The South Fork of the Boise River runs through the unit's core, joined by numerous creeks including Chaffee, James, Porter, and Charcoal Creek—most reliable year-round but often difficult to access in steep terrain. Named springs are scattered throughout: Cold Spring, Parker Spring, Frenchman Spring, and Granite Spring warrant scouting before season.

Summer months may require careful water planning on higher ridges. The limited water badge reflects that while significant drainages exist, they're not uniformly distributed—dry ridges force hunters to plan water stops strategically.

Unit 39 is an elk unit where terrain complexity rewards systematic hunting. Early season hunts focus on high-elevation fir forests and alpine meadows above 8,000 feet, with bulls accessible via ridge systems and high drainages. Mid-season hunters should drop into the steep canyons where elk stage between high and low country, working creek bottoms and side drainages.

Late season concentrates on lower elevations where scattered ponderosa and brush country hold animals as snow drives them downslope. Glassing from ridge vantage points works when weather allows, but the steep canyons often require foot hunting to locate elk. Water sources in the drainage system concentrate animals—scout springs and creeks before season and hunt near them methodically.