Unit 1, Idaho

Unit 1 spans approximately 2,475 square miles of mountainous terrain across two major ranges: the Selkirk Mountains to the west and the Purcell Mountains (including the Cabinet Range transition zone) to the east. Elevations range from roughly 1,700 feet along the Kootenai River bottoms to peaks exceeding 7,200 feet in the upper Selkirks and Purcells. The Purcell Trench — a broad glaciated valley five to ten miles wide carrying the Kootenai River — bisects the unit for about 50 miles and contains most of the private agricultural land. Above 6,000 feet, terrain becomes steep and rugged with exposed rock, cliffs, and talus. Lower slopes and valley floors support gentler topography covered in dense old-growth and second-growth timber, clearcuts, and riparian meadows.

Primary highway access is via US-95 (the main north-south corridor through the Kootenai River valley and Bonners Ferry) and US-2 along the northern Kootenai River bottomlands. State Highway 57 is the main artery into the Priest Lake basin from the south. The unit is managed predominantly by the Idaho Panhandle National Forests (Kaniksu National Forest) under the Bonners Ferry and Priest Lake Ranger Districts; the U.S. Forest Service controls 52.2% of the unit's surface area. The State of Idaho manages 15.6% (Priest Lake State Forest and associated parcels). BLM holds only 0.7%, making it a minor presence. Private land (29.2%) is concentrated in valley bottoms, particularly the Purcell Trench. Hundreds of miles of Forest Service roads provide vehicle access into the Kaniksu and Priest Lake State Forest portions of the unit. The Kootenai National Wildlife Refuge near Bonners Ferry is open to hunting. There are no federally designated Wilderness areas within Unit 1. The Myrtle Creek and David Thompson Game Preserves within the unit are permanently closed to hunting. Several Forest Service roads are subject to seasonal closures in higher-elevation portions of the Kaniksu. All black bear hunters statewide must pass the mandatory bear identification test (required since January 1, 2025), which is especially relevant here given confirmed grizzly bear presence in the Selkirk Mountains ecosystem.

The unit is 77.6% forested. Lower and mid-elevation forests are dominated by cedar, hemlock, Engelmann spruce, subalpine fir, and ponderosa pine, with western white pine historically prevalent in the Priest Lake basin. Lodgepole pine and subalpine fir dominate upper-elevation stands. A patchwork of clearcuts (at various regeneration stages), old-growth patches, and replanted timber stands provides varied structure throughout. Valley floors along the Kootenai River and Priest River contain meadows, cropland, brush-lined riparian corridors, and wetlands. Above timberline, alpine tundra and rock fields cap the highest peaks. Dryland agriculture accounts for 14.4% of the unit's area; rangeland is 6.1%.

White-tailed deer are the dominant and most abundant big game species, with Unit 1 ranking among the top producers of whitetail harvest in Idaho; deer use dense forest edge, clearcuts, riparian areas, and agricultural fields in the Purcell Trench. Mule deer are present at lower numbers, primarily in drier, more open terrain. Rocky Mountain elk are well-established, with Units 1, 4, and 6 consistently ranking as top-tier elk units statewide; elk summer in higher-elevation meadows and old-growth basins and shift to lower-elevation forests and valley margins in fall and winter. Moose inhabit riparian corridors, willow-lined wetlands, and young post-cut forest throughout the unit. Black bears are common across the unit in forested habitats; all hunters must pass a bear identification test due to the confirmed presence of grizzly bears in the Selkirk Mountains ecosystem. Mountain lions are present as a resident population following deer. Gray wolves maintain an established population in the Panhandle and are regulated as a huntable species in this unit. Mountain goats occupy high rocky terrain in the upper Selkirks and Purcells. Upland birds include ruffed grouse, blue grouse, spruce grouse, and wild turkey. Waterfowl use the Kootenai River corridor and Priest Lake. Chronic Wasting Disease (CWD) was confirmed in Unit 1 in 2024 (a whitetail doe near Bonners Ferry in Boundary County east of the Selkirk crest), triggering a CWD Management Zone with mandatory carcass testing and whole-carcass transport restrictions in the affected portion of the unit.