Unit 21 21 (Salmon)
Steep, timbered Salmon River breaks against the Montana line — scattered game and one of Idaho's storied bighorn canyons.
Central Idaho — Salmon River / Lemhi County (Region 7 — Salmon) · Last reviewed 2026-07-12
Area
508
sq mi
Public land
85%
approx.
Elevation
3,000–9,000
feet
Motorized
moderate
access
Overview
Unit 21 is the rugged wedge of northern Lemhi County northwest of the town of North Fork, bounded by the Salmon River on the south and west and the Idaho–Montana state line (Bitterroot Divide) on the north and east. This is classic Salmon River breaks country: knife-ridged, heavily timbered, and hard to hunt, with animals thinly scattered across steep dark-timber slopes. It carries a limited but genuine bighorn sheep resource in the Salmon River canyon plus general-season elk and mule deer, with whitetail down in the river bottoms.
Terrain
Deeply dissected canyon-and-ridge terrain rising from the Salmon River at roughly 3,000 ft to timbered peaks near 9,000 ft along the Continental/Bitterroot Divide. Slopes are steep and long, with narrow benches and brushy draws.
Cover: Dark Douglas-fir and lodgepole timber on north aspects, ponderosa and bunchgrass on hot south breaks, mountain mahogany and bitterbrush on lower canyon slopes, subalpine fir near ridgelines.
Landmarks: Salmon River (main stem) · North Fork of the Salmon River · Stripe Mountain · Lost Trail Pass area / Bitterroot Divide · Idaho–Montana state line
Access
Overwhelmingly Salmon-Challis National Forest with a fringe of private ground along the Salmon River bottom near North Fork. U.S. 93 runs the North Fork corridor; Forest roads climb the drainages but many peter out into steep foot-only country. Adjacent to Frank Church–River of No Return Wilderness across the Salmon River to the west.
Managers: USFS Salmon-Challis NF, IDL, Private (river bottoms)
Access points: North Fork (U.S. 93) · Salmon River Road toward Corn Creek · Gibbonsville / Dahlonega Creek road · Forest roads off U.S. 93 toward the Montana divide
Species notes
Mule Deer
common opportunityGeneral-season mule deer scattered across the breaks; roughly a third of hunters connect. Best bucks hold on high, remote south-facing benches.
- →Glass open south-facing breaks at first and last light
- →Hunt the timber edges where dark north slopes meet bunchgrass benches
- →Be prepared for long, steep pack-outs from the canyon
Whitetail Deer
limited opportunityWhitetail hold in the Salmon River bottoms and lower brushy draws, a secondary opportunity to the higher-country muleys.
- →Still-hunt riverbottom cover and creek confluences near North Fork
- →Watch agricultural edges at dawn and dusk
- →Focus low when snow pushes deer off the ridges
Rocky Mountain Elk
common opportunityGeneral-season elk unit with modest success — animals are scattered in heavy timber and pressured by wolves and bears. Physical, patient hunters who get away from roads do best.
- →Work dark north-slope timber pockets and wallows in the early season
- →Hunt burns and old cuts that regrew to feed
- →Cover country on foot — road hunting rarely produces here
Bighorn Sheep
limited trophyA capped, once-in-a-lifetime bighorn resource in the Salmon River canyon; the few tag holders enjoy very high success on mature rams.
- →Glass the steep river-canyon breaks and rocky rims
- →Locate bands from the road/river then plan a stalk from above
- →Expect a demanding controlled-hunt draw and multi-day effort
Black Bear
common opportunityHealthy black bear numbers through the timbered drainages; a reliable spring and fall opportunity where legal.
- →Glass green-up avalanche chutes and south slopes in spring
- →Hunt berry fields and old burns in late summer/fall
- →Check drainage bottoms and creek edges for feeding bears
Pro tips
- →Treat this as a boots-and-glass unit — the steep breaks reward hunters who leave the road and climb
- →Set up to glass big canyon faces at dawn/dusk rather than pushing timber blind
- →Plan pack logistics before you shoot; recoveries out of the Salmon breaks are brutal
- →Watch for whitetail low and muleys high — the same day can offer both
- →Wolves and bears keep elk skittish and shifting; hunt fresh sign, not last year's spots
Watch out for
- !Very steep, remote terrain with real fall and exposure hazard
- !Wolf and black bear presence throughout — secure meat and camp
- !Private inholdings along the Salmon River bottom near North Fork — know boundaries
- !High Forest roads snow shut quickly in fall; carry chains and recovery gear
- !No reliable cell service off U.S. 93
Logistics
Salmon is the regional hub (fuel, lodging, groceries, IDFG Region 7 office); North Fork offers a small store, lodging and river access. U.S. 93 provides year-round access up the North Fork corridor to Lost Trail Pass. Cell coverage is spotty to nonexistent off the highway; carry a satellite communicator.
Nearest towns: North Fork, Gibbonsville, Salmon, Shoup
Seasons & regulations
This page carries no season dates or regulations. Get current rules from the official Idaho sources:
Research sources: IDFG Hunt Planner — Unit 21 · USFS Salmon-Challis National Forest
FAQ
- How big is Unit 21 in Idaho?
- Unit 21 (21 (Salmon)) covers about 508 square miles, ranging from roughly 3,000 to 9,000 feet in elevation. Area is computed from the unit boundary polygon.
- How much public land is in Unit 21?
- Approximately 85% of the unit is public land. Primary managers: USFS Salmon-Challis NF, IDL, Private (river bottoms). Always verify ownership boundaries on the ground.
- What species does the catalog list for Unit 21?
- Mule Deer, Whitetail Deer, Rocky Mountain Elk, Bighorn Sheep, Black Bear. For seasons, tags, and regulations, use the official Idaho agency resources linked on this page — this page carries no regulatory information.
Put Unit 21 on your map.
Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.