Arizona Bighorn Sheep

Unit 46BW (Kofa — Castle Dome West)

Arizona Hunting Guide — Bighorn Sheep

Unit 46BW covers desert bighorn sheep habitat in the western Kofa Mountains and Castle Dome range within the Kofa National Wildlife Refuge and adjacent BLM country in southwestern Arizona. Per AZGFD's GMU 46 and Kofa NWR information, the unit's rugged desert mountain ranges support one of Arizona's strongest desert bighorn populations. The 2025-26 Arizona Hunting Regulations allocate roughly 8 bighorn tags per 3-year average for the 46BW hunt. This is a once-in-a-lifetime premier bighorn hunt.

View Draw Odds Arizona Hunting Guide

Bighorn Sheep Hunting in Unit 46BW

Where to Find Bighorn in Unit 46BW

Unit 46BW desert bighorn occupy the rugged escarpments and canyon country of the Kofa and Castle Dome ranges.

Main Escarpments

Mature rams hold on the upper escarpments and vertical cliff faces where predators cannot reach. Glass these upper faces from long distance with high-magnification optics.

Canyon Heads

Sheep concentrate at canyon heads with reliable water (natural tanks or guzzlers) and rocky escape terrain nearby. These focal points are the highest-value glassing targets.

South-Facing Cliffs

Winter rams favor south-facing exposures for warmth and forage. Mornings on these cliffs produce the best glassing opportunities.

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How to Hunt Bighorn in Unit 46BW

A Unit 46BW bighorn tag is a once-in-a-lifetime opportunity. We approach it like a Dall sheep hunt — with months of preparation.

Pre-Hunt Scouting

Spend multiple weekends in the unit before opening day. Score rams from the road and long-distance vantages, build a shortlist, and know exactly which canyons hold your target animals.

Long-Range Glassing

This is a spotting-scope hunt. A 20-60x scope on a sturdy tripod is essential. Glass systematically across every cliff face and canyon head, and be prepared to spend full days behind the glass.

Guide Considerations

Most successful Unit 46BW hunters use a qualified guide or outfitter familiar with the range. The terrain is punishing and the consequences of trophy judgment errors are severe — experienced support pays for itself.

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Bighorn Sheep Success Rates

Rifle75%

Unit 46BW bighorn hunts run extremely high success rates — typically 90-100% on rifle hunts given the limited tag count, quality population, and extensive pre-hunt scouting most tag holders complete. Ram quality is premier-tier, with mature rams in the 160-170 class possible and occasional record-book animals.

Bighorn Sheep Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle— General Rifle	4	156	0.6%	0
Rifle— Late Rifle Dec	4	345	1.2%	0

Data from 2023 draw results. Resident odds shown.

Open in Draw Odds Engine

Unit 46BW bighorn is a premier Arizona desert bighorn tag. Most successful applicants hold 25+ bonus points. Arizona's bighorn tag is a once-in-a-lifetime rule — once drawn, you cannot apply for another bighorn tag in Arizona. The 20% set-aside for 0-point applicants provides a remote long-shot for new hunters. This is a lifetime application commitment.

Unit Logistics & Expectations

Planning Notes

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RV Sites

Dispersed RV camping on BLM land around the Kofa NWR boundary. RV parks in Quartzsite.

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Camp Sites

Dispersed camping on BLM and (where allowed) refuge land. Confirm refuge camping rules before entering Kofa NWR.

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Trailer Access

Highway 95 is paved. Refuge and BLM roads vary — most are rough desert tracks requiring high-clearance 4WD.

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Water

Carry all water. Quartzsite or Yuma for resupply. Absolutely no reliable natural water for human use.

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Road Conditions

Rough. Refuge roads are signed and maintained but require high-clearance. Many interior roads are primitive.

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Terrain Difficulty

Extreme. Vertical escarpments, loose rock, and cactus-choked canyons. This is the hardest Arizona terrain for big-game hunting.

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Hunting Pressure

Very low. Very limited tags keep pressure near zero.

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Weather

Late-season bighorn hunts run November-December with 50-80°F days and cool nights. Hydration is still critical — desert dehydration is a year-round risk.

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Cell Service

None in the backcountry. Satellite communicator is non-negotiable on this hunt.

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Nearest Town

Quartzsite (basic services — fuel, groceries). Yuma (90 min southwest, full urban services).

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Frequently Asked Questions

Is Arizona bighorn a once-in-a-lifetime tag?

Yes. Once you draw an Arizona bighorn sheep tag, you cannot apply for another Arizona bighorn tag for the rest of your life. This is a lifetime commitment — plan accordingly.

How many bonus points for Unit 46BW bighorn?

Most successful applicants hold 25+ bonus points. Arizona's weighted bonus draw rewards maximum points but does not guarantee selection — the random component and the 20% 0-point set-aside create variability.

Should I hire a guide for Unit 46BW?

Most drawn hunters do. The terrain is punishing, trophy judgment matters enormously on a once-in-a-lifetime tag, and experienced Kofa guides significantly improve both success rate and ram quality.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-04-17.

GMU 46 — Unit Landing Page — Arizona Game and Fish Department · supports: Canonical unit info page, Kofa/Castle Dome boundary notes, Desert bighorn habitat · accessed 2026-04-17
2025-26 Arizona Hunting Regulations — Arizona Game and Fish Department · supports: Bighorn sheep season structure, Tag quotas for 46BW, Legal weapons and tag conditions · accessed 2026-04-17
AZGFD Draw Portal — Hunt Drawing Information — Arizona Game and Fish Department · supports: Weighted bonus point bighorn draw, Once-in-a-lifetime tag rule, 20% set-aside for 0-point applicants · accessed 2026-04-17
Kofa National Wildlife Refuge — U.S. Fish and Wildlife Service · supports: Refuge boundaries, Road access and wilderness areas, Desert bighorn management · accessed 2026-04-17