Idaho Mule Deer Moose California Bighorn Sheep

Unit 55

Idaho Hunting Guide — Mule Deer, Moose, California Bighorn Sheep

Unit 55 mule deer hunts in Idaho are administered by the Idaho Department of Fish and Game (IDFG) through a mix of general and controlled hunts. Controlled hunt tags are issued through the IDFG controlled-hunt draw system. Hunters should review current IDFG season dates, weapon types, and hunt area boundaries before applying.

View Draw Odds Idaho Hunting Guide

Mule Deer Hunting in Unit 55

Where to Find Mule Deer in Unit 55

Mule Deer in Unit 55 use a range of habitats typical of Idaho mountain and forest country. Refer to the IDFG Hunt Planner for public-land access overlays and current habitat information when scouting.

How to Hunt Mule Deer in Unit 55

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Mule Deer Success Rates

Check IDFG Hunt Planner harvest statistics for the most recent success rates in Unit 55 by weapon type. Success varies year to year with weather, habitat conditions, and hunting pressure.

Mule Deer Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle— Controlled	413	2,773	14.9%	0

Data from 2025 draw results. Resident odds shown.

Open in Draw Odds Engine

Unit 55 controlled mule deer tags are awarded through the IDFG draw. Use the IDFG Hunt Planner draw-odds tool to review current resident and nonresident odds by hunt number before selecting hunt choices.

Moose Hunting in Unit 55

Unit 55 covers eastern Snake River Plain country — cottonwood river bottoms, agricultural edges, and sage-steppe habitat that supports a small but established Shiras moose herd along the Snake River corridor. With roughly 515 three-year applicants against 9 tags, Unit 55 is one of Idaho's tighter once-in-a-lifetime moose draws. Moose, sheep, and goat are separate OIAL species.

Where to Find Moose in Unit 55

Moose in Unit 55 concentrate in cottonwood river bottoms and willow-lined sloughs along the Snake River. Irrigated agriculture adjacent to the river provides supplementary feed.

Cottonwood River Bottoms

Snake River cottonwood galleries and willow sloughs are core habitat. We focus on BLM and WMA ground along the main river and side channels.

Agricultural Edges

Moose use irrigated hay fields bordering the river corridor, especially where private ground is unhuntable and animals receive de facto sanctuary.

How to Hunt Moose in Unit 55

Unit 55 moose hunts are river-corridor hunts. We scout the Snake River floodplain on foot and by glassing from levees and county bridge crossings before opening day.

Pre-Season Glassing

Drive river crossings and public-access fishing sites and glass the cottonwood bottoms. Moose are often visible feeding in sloughs at dawn and dusk.

Permission and Access

Private ground dominates stretches of the Snake River. We secure permission where possible and focus public hunting effort on BLM and IDFG WMA ground.

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Moose Success Rates

Idaho moose tag holders post high success rates statewide. Per-hunt figures for Unit 55 are published in the IDFG Hunt Planner statistics tool. We recommend confirming the most recent numbers before the season.

Moose Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle— Controlled	3	112	2.7%	0

Data from 2025 draw results. Resident odds shown.

Open in Draw Odds Engine

Idaho moose is once-in-a-lifetime — any Idaho moose tag disqualifies future moose draws. Moose, sheep, and goat are separate OIAL species. Idaho uses a pure random draw with no preference points. Unit 55 with roughly 515 three-year applicants against just 9 tags is one of the longest-odds moose hunts in the state. Nonresidents compete for a 10% quota slice of an already-small tag pool.

California Bighorn Sheep Hunting in Unit 55

Unit 55 covers the southernmost Owyhee uplands along the Idaho-Oregon border, adjacent to Jordan Valley, Oregon. California bighorn sheep inhabit the rocky canyon country and rimrock of this high desert landscape — some of the most isolated terrain in the lower 48. The unit straddles the state line area, and hunters should be aware of boundary details. BLM land dominates the landscape, and sheep populations here benefit from the vast undisturbed desert habitat of the tri-state Owyhee corner.

Where to Find California Bighorn Sheep in Unit 55

Unit 55 sheep occupy the canyon and rimrock systems draining the southern Owyhee uplands toward the Idaho-Oregon border. This is genuinely remote Great Basin desert bighorn habitat.

South Owyhee Canyon Country

The deep drainages of the south Owyhee — Pole Creek, Indian Creek, and their tributaries — cut through the basalt plateau creating canyon habitat with sheer walls and rocky benches. Glass these canyons from rim overlooks, focusing on the rocky cliff systems where sheep find security.

Isolated Rocky Ridges

Between canyon systems, isolated rocky ridges and rimrock outcrops break the plateau surface and provide sheep with additional habitat. These features are worth systematic glassing — a single ridgeline can hold a small band of sheep that would be easy to overlook by a hunter focused only on the main canyon drainages.

How to Hunt California Bighorn Sheep in Unit 55

Unit 55 is one of Idaho's most remote hunting units — plan for self-sufficient camping, satellite communication, and thorough pre-trip navigation prep. The reward is hunting bighorn sheep in truly wild country with minimal human pressure.

Extended Expedition Mindset

Plan for at least 7–10 days in Unit 55. The distance from services and the extensive terrain to cover means committed hunters who build in time to locate and stalk sheep outperform those who expect to find a ram quickly. Bring enough food and water for weather delays.

Glassing Strategy in Open Desert

The relatively open desert vegetation in the south Owyhee allows glassing at extended ranges. Set up on high points overlooking multiple drainages simultaneously and glass systematically in the cool morning hours when sheep are most active. Use the midday heat to relocate between glassing vantages.

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California Bighorn Sheep Success Rates

Unit 55 tag holders who commit to a full expedition achieve 65–80% success. The remoteness filters casual effort, but hunters who invest significant time in the unit consistently find sheep. Ram quality reflects the undisturbed nature of the habitat.

California Bighorn Sheep Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle— Controlled	2	109	1.8%	0

Data from 2025 draw results. Resident odds shown.

Open in Draw Odds Engine

Unit 55 draw odds for California bighorn are typically 1–4% for residents. The unit's remote location keeps applicant pressure somewhat lower than more accessible Owyhee units, making this one of the relatively better odds California bighorn options in Idaho.

Unit Logistics & Expectations

Planning Notes

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Camp Sites

Dispersed camping is generally allowed on US Forest Service and BLM land within Unit 55, subject to local rules. Developed campgrounds may also be available near main road corridors.

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Water

Creeks and springs are found in typical Idaho drainages but flows vary by season. Filter or treat all backcountry water.

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Road Conditions

Access is primarily via state highways and US Forest Service or BLM roads. Secondary roads are gravel or native surface and often require high-clearance or 4WD in wet conditions.

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Terrain Difficulty

Idaho mountain and forest terrain with timbered slopes, open ridgelines, and brushy drainages. Plan for steep country and meaningful elevation change off the road system.

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Weather

Fall weather can include cool temperatures, rain, and early snow at elevation. Hunters should plan for changing mountain conditions throughout the season.

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Cell Service

Cell coverage drops off quickly off paved highways. A satellite communicator is recommended for backcountry hunts in Unit 55.

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Permit Notes

Confirm tag, permit, and reporting requirements with IDFG each season. Mandatory harvest reporting applies to many Idaho hunts.

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Frequently Asked Questions

How do I apply for a mule deer tag in Idaho Unit 55?

Controlled mule deer tags in Unit 55 are applied for through the IDFG controlled-hunt draw. Review current IDFG Big Game Seasons & Rules and the Hunt Planner for application windows and eligibility.

Where can I see current draw odds for Unit 55 mule deer?

The IDFG Hunt Planner publishes historical draw odds by hunt number for resident and nonresident applicants. Compare recent years before choosing a hunt.

How tight are Unit 55 moose draw odds?

Very tight. Unit 55 sees roughly 515 three-year applicants competing for around 9 tags. Idaho uses a pure random draw with no preference points, so expect to apply many years before drawing.

Where do you find moose on the Snake River Plain?

Moose in Unit 55 concentrate in cottonwood and willow bottoms along the Snake River corridor, using river-bottom cover and adjacent irrigated agriculture. Focus public-land effort on BLM and IDFG WMA ground along the main river.

Is the Unit 55 sheep habitat entirely in Idaho, or does it cross into Oregon?

Unit 55 is an Idaho hunting unit and the permit is issued by IDFG. Hunting is only legal on the Idaho side of the state line. Know your exact position relative to the boundary — carry a GPS loaded with state line boundaries when hunting this border unit.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-04-18.

IDFG Big Game Hunting — Idaho Department of Fish and Game · supports: Statewide big game season framework, Weapon and hunt type overview · accessed 2026-04-17
IDFG Controlled Hunts — Idaho Department of Fish and Game · supports: Controlled hunt application rules, Draw timelines and tag quotas · accessed 2026-04-17
IDFG Hunt Planner — Idaho Department of Fish and Game · supports: Per-unit season selector, Historical draw odds and harvest stats · accessed 2026-04-17
2025-2026 Idaho Big Game Seasons & Rules — Idaho Department of Fish and Game · supports: Unit 55 moose controlled hunt designation, Once-in-a-lifetime rule, Tag quotas · accessed 2026-04-17
IDFG Hunt Planner — Controlled Hunt Draw Odds — Idaho Department of Fish and Game · supports: Unit 55 moose historical applicants and tag counts · accessed 2026-04-17
BLM Idaho Falls District — Bureau of Land Management · supports: Snake River corridor BLM lands, Motorized travel management · accessed 2026-04-17
IDFG Big Game Rules — Idaho Department of Fish and Game · supports: Unit boundaries, Season structure, Tag quotas · accessed 2026-04-18