Unit 51 (Lemhi Zone)
Idaho Hunting Guide — Elk, Moose
Unit 51 lies in Butte, Custer and Lemhi counties and covers about 941 square miles. Named ground inside it runs from 4,797 to 12,092 feet. Idaho Fish and Game's harvest estimates put elk success here as high as 31%. Federal land covers about 91% of it. Check land status on a current map before you plan a route.
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Elk Hunting in Unit 51
Unit 51 lies in Butte, Custer and Lemhi counties and covers about 941 square miles. Named ground inside it runs from 4,797 to 12,092 feet. Idaho Fish and Game's harvest estimates put elk success here as high as 31%. Federal land covers about 91% of it. Check land status on a current map before you plan a route.
Where to Find Elk in Unit 51
What Idaho Fish and Game publishes for unit 51 is a boundary, not a elk map. Every place named below sits inside the unit line. Which of them holds animals in your season is for you to find out. The unit lies in Butte, Custer and Lemhi counties. It runs to about 941 square miles.
How Idaho Fish and Game sets up elk hunting in unit 51
Idaho Fish and Game runs its general elk seasons by elk management zone rather than unit by unit, and puts unit 51 in the Lemhi Zone, so the zone's tag rules are the ones that apply here.
What bounds unit 51
Idaho Fish and Game describes unit 51 as those portions of Butte, Custer, and Lemhi counties within the Little Lost River drainage north and west of State Highway 33. Read it as a frame, not as a hint about animals. What it does give you is the way in: the rivers and highways you cross, and the divides that decide which drainage you end up in.
High ground inside the line: Mount Breitenbach, Bell Mountain and Massacre Mountain
Named high points inside the unit include Mount Breitenbach at 12,092 feet, Bell Mountain at 11,589 feet, Massacre Mountain at 10,916 feet, Castle Peak at 10,910 feet and Sheep Mountain at 10,862 feet. Several carry a public-land flag in our data, which makes them the first places to try for a view. Elk want timber to bed in and open ground to feed on, within a short walk of each other.
Holding ground: Pass Creek Summit, Black Tail Canyon and Little Basin
Below them sit Pass Creek Summit at 7,639 feet, Black Tail Canyon at 7,511 feet, Little Basin at 7,414 feet, Boulder Canyon at 7,216 feet and Bunting Canyon at 7,119 feet. These are the folds worth watching, and the ones other hunters walk past on the way to somewhere steeper. Work out which of them you can see from one position before you pick a camp.
Water: Dry Creek Spring Number 2, Y Springs and Coyote Spring
The water inside the unit line comes to 27 mapped stream reaches, 2 lakes, 2 stock tanks and 1 springs. Named sources include Dry Creek Spring Number 2, Y Springs, Coyote Spring, Moffett Springs, Magpie Springs and Blind Springs. Nothing in the data says which of them run in autumn, so a scouting trip earns its fuel.
Reading the land status
Our ownership read for this unit is approximate — it comes out as National Forest 60%, Private / Other 17%, BLM 15% and State Trust 8%, so treat it as a starting point and check a current land-status layer before you plan a route. Named ground inside unit 51 runs from 4,797 feet to 12,092 feet — more than 4,000 feet between the named features alone, so the season you draw decides which part of it you hunt.
Unit 51 terrain and land status
Measured from the unit boundary, not from the agency write-up
The lay of it
- 4,819–9,558 ft on a terrain sample , averaging 7,307 ft ; peaks can run higher. That spread means you can hunt two seasons in one day — plan clothing for both ends.
- 941 sq mi inside the boundary. Big enough that picking one drainage beats driving three.
Who owns the ground
- National Forest — 60%
- BLM — 15%
- State Trust — 8%
- Private / Other — 17%
Roughly 83% is public. Carry a land-status layer anyway — these are area percentages, not a map of where the boundaries fall.
Water on the ground
- 2 tanks
- 1 springs
- 27 stream segments
- 2 lakes
Counts from mapping data, so this is how many exist, not how many hold water in a dry year. Sitting water only pays where you find fresh tracks.
Named features inside the unit
Glass from: Mount Breitenbach (12,092 ft), Bell Mountain (11,589 ft), Massacre Mountain (10,916 ft), Castle Peak (10,910 ft)
Holding ground: Firbox Meadows (9,159 ft), Hell Canyon (8,432 ft), Wet Creek Basin (7,764 ft), Dry Creek Spring Number 2, Y Springs
Every one of these was tested against the unit polygon before it went on the map. They are starting points, not agency recommendations.
How to Hunt Elk in Unit 51
Elk Success Rates
Idaho Fish and Game's 2025 harvest estimates put elk success in unit 51 at 31% — 20 animals taken by 64 hunters. The hunter count is large enough for the percentage to mean something and small enough that a good or bad year still moves it.
These are the agency's own printed figures for this unit, not a modelled estimate and not a state average. They describe one season, so check Idaho Fish and Game's current harvest estimates before you read a trend into them.
Elk Draw Odds
| Season | Tags | Applicants | Draw % | Pts (n/p) |
|---|---|---|---|---|
| Controlled — 1st Drawing either sex (resident) | 10 | 313 | 3.0% | — |
| Controlled — 1st Drawing either sex (nonresident) | 0 | 24 | 0.0% | — |
| Controlled — 2nd Drawing either sex (resident) | 5 | 356 | 1.0% | — |
| Controlled — 2nd Drawing either sex (nonresident) | 1 | 41 | 2.0% | — |
Data from 2025 draw results. Each row is one residency pool — read the label before the number. This agency publishes no point thresholds, so the Pts column stays blank and these are pool odds, not what a point total draws.
Open in Draw Odds EngineIdaho Fish and Game's 2025 first drawing for elk in unit 51, with residents and nonresidents kept apart because they draw from different tag pools:
- Hunt 2032 — residents 813 applicants for 115 tags, 14% drawn; nonresidents 159 applicants for 10 tags, 6% drawn
- Hunt 2031 — residents 313 applicants for 10 tags, 3% drawn; nonresidents 24 applicants for 0 tags, 0% drawn
- Hunt 2091 — residents 155 applicants for 71 tags, 46% drawn; nonresidents 12 applicants for 4 tags, 33% drawn
- Hunt 2090 — residents 109 applicants for 72 tags, 66% drawn; nonresidents 3 applicants for 3 tags, 100% drawn
Idaho draws at random with no point system, so these are what that year happened to look like, not a requirement to build toward. Idaho Fish and Game reuses hunt numbers for different areas between years, so the figures are matched on the area each hunt had in 2025. Checked against Idaho Fish and Game's hunt planner draw results on 2026-06-09.
Unit Logistics & Expectations
Frequently Asked Questions
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Every fact on this page is tied to a primary source below. Last fact-checked 2026-10-24.
- Idaho Big Game 2026 Seasons & Rules — Idaho Department of Fish and Game · supports: Game management unit boundary description, Counties the unit lies in, Controlled hunt numbers, tags and season dates · accessed 2026-10-24
- IDFG Lemhi Zone elk tag limits — Idaho Department of Fish and Game · supports: Season structure for the unit · accessed 2026-10-24
- IDFG Hunt Planner — 2025 general hunt harvest statistics — Idaho Department of Fish and Game · supports: Harvest, hunters and percent success for elk in unit 51 · accessed 2026-10-19
- IDFG Hunt Planner — controlled hunt drawing odds — Idaho Department of Fish and Game · supports: Applicants, tags and percent drawn by hunt, year and residency · accessed 2026-06-09
- IDFG GameManagementUnits and ControlledHunts_All feature services — game management units and every species' controlled-hunt areas — Idaho Department of Fish and Game · supports: Mapped extent of the unit or hunt area, Which named ground falls inside its line · accessed 2026-10-24
- Moose, Bighorn Sheep & Mountain Goat 2025 & 2026 Seasons & Rules — Idaho Department of Fish and Game · supports: Controlled hunt application periods and eligibility rules · accessed 2026-10-24