Unit 904 West Desert

A vast, wide-open Great Basin empire of isolated desert ranges — prime pronghorn, sleeper mule deer, once-in-a-lifetime bighorn, and true solitude on an enormous public-land base.

Western Utah — Great Basin West Desert · Last reviewed 2026-07-12

Mule deer buck trotting across open prairie at dusk

Area

11,421

sq mi

Public land

90%

approx.

Elevation

4,400–12,087

feet

Motorized

extensive

access

Overview

The West Desert spans a huge sweep of western Utah's Great Basin, from the Tooele and Rush Valley country south and west across endless sagebrush basins to the Nevada line, taking in dozens of isolated 'sky island' desert ranges — the Sheeprock, Simpson, Vernon, Thomas, House, Confusion, Deep Creek, Fish Springs, and other mountains. It is antelope country first and foremost — some of Utah's best pronghorn range sprawls across the open valleys — but the ranges also hold mule deer, a scattering of Rocky Mountain elk, and both desert and Rocky Mountain bighorn sheep on once-in-a-lifetime tags. The defining features are scale, remoteness, and an overwhelmingly public-land base, rewarding hunters who can cover big country and be entirely self-sufficient.

Terrain

Classic Basin and Range: broad sagebrush and salt-desert valleys near 4,400–5,500 feet separated by abrupt, rocky desert ranges. Most crest 8,000–10,000 feet, but the Deep Creek Mountains on the Nevada line rise dramatically to 12,087-foot Ibapah Peak — an alpine island above the desert floor.

Cover: Salt-desert shrub, greasewood, and shadscale on the basin floors; vast sagebrush and grass benches; pinyon-juniper and mountain mahogany on the range flanks; and pockets of aspen, mixed conifer, and even limber pine at the highest elevations in the Deep Creeks. Water is the scarcest resource — springs, guzzlers, and a few desert creeks are everything.

Landmarks: Deep Creek Mountains / Ibapah Peak (12,087 ft) · House Range / Notch Peak & Swasey Peak · Sheeprock Mountains · Simpson & Thomas ranges · Fish Springs National Wildlife Refuge · Confusion Range · Dugway Proving Ground (military, closed) · Great Salt Lake Desert / Bonneville Salt Flats

Access

The West Desert is overwhelmingly public — vast BLM holdings with SITLA state-trust ground interspersed and small national-forest parcels on the Sheeprock and Deep Creek ranges. SITLA state ground is generally open to hunting. Major exclusions to map are Dugway Proving Ground (military, closed) and Fish Springs NWR (limited hunting). A skeleton of graded county roads and BLM routes crosses the basins, but distances between anything are enormous, roads are rough and remote, and there is no water, fuel, or cell service across much of the interior.

Managers: BLM, SITLA, USFS Uinta-Wasatch-Cache NF, military, private

Access points: Pony Express / Lincoln Highway backcountry byway (Tooele to Ibapah) · US-6 / US-50 corridors from Delta and Eureka · BLM roads from Vernon and the Sheeprock/Simpson ranges · The Callao–Trout Creek road to the Deep Creek Mountains · SR-125/roads west of Delta into the House and Confusion ranges

Species notes

Pronghorn

abundant quality

The West Desert is some of Utah's premier pronghorn range — antelope range the wide sagebrush valleys in good numbers, and several sub-areas produce quality bucks on limited-entry tags. The open terrain and vast public access make this classic, wide-open spot-and-stalk country.

  • Glass the big sagebrush valleys from elevated vantages, then plan long stalks using terrain rolls, washes, and mirage-cutting patience.
  • Locate resident buck groups pre-season and pattern their feeding and watering routine.
  • Set ambushes or use decoys near guzzlers and water in the heat of early season.
  • Range carefully and be ready for a longer, flat shot — cover is minimal.

Mule Deer

common opportunity

Mule deer inhabit the desert ranges' pinyon-juniper, mahogany, and higher pockets — spread thin across enormous country but reaching real quality in the Deep Creeks and the more remote ranges. This is a low-density, high-effort hunt where mapping water and covering ground with glass matter more than anything.

  • Glass mahogany pockets, aspen stringers, and juniper edges high in the desert ranges at first and last light.
  • Key on the scarce water — springs and guzzlers concentrate deer in the dry country.
  • Hunt the remote, hard-to-reach ranges and the Deep Creek high country for the best bucks.
  • Be prepared to cover many miles between deer; this is a spread-thin desert unit.

Bighorn Sheep

limited trophy

The West Desert carries both bighorn subspecies on once-in-a-lifetime tags — Rocky Mountain bighorn reintroduced to the Deep Creek Mountains, and desert bighorn in ranges like the House Range and other isolated desert massifs. Drawing a tag is the hunt of a lifetime; the animals live in rugged, remote rimrock.

  • Spend serious pre-season time glassing the cliff bands, rims, and rugged canyon country the rams favor.
  • In the Deep Creeks, work the high alpine and rocky basins for Rocky Mountain rams.
  • In the desert ranges, focus on rimrock, cliff faces, and water sources in broken terrain.
  • Be prepared for extreme remoteness and self-sufficient, multi-day backcountry effort.

Rocky Mountain Elk

limited opportunity

Elk are a scattered, localized presence in the West Desert — notably the introduced herd in the Deep Creek Mountains and animals using the Sheeprock and higher ranges. Numbers are modest and tags controlled; encounters reward hunters who reach the timbered high pockets.

  • Focus on the timbered and aspen high country of the Deep Creeks and Sheeprocks.
  • Locate rutting bulls by bugling the conifer-aspen edges in the highest basins.
  • Watch springs, meadows, and travel saddles where elk concentrate in dry country.

Cougar

common quality

Cougars track the deer and desert bighorn through the broken desert ranges. Hunted mainly in winter with hounds when snow allows cutting for tracks.

  • Cut for tracks on fresh snow along the range fronts, canyon bottoms, and rimrock.
  • Focus on deer wintering areas and the rugged sheep ranges where lions hunt.
  • Be ready to cover huge distances between fresh sign in this vast country.

Black Bear

transient low

Black bears are a marginal, transient presence in the West Desert, largely tied to the timbered Deep Creek Mountains. This is not a bear destination; encounters are rare and incidental.

  • If pursuing bears at all, concentrate on the timbered, higher Deep Creek country.
  • Glass mast and berry pockets on the higher, wetter slopes in late summer and fall.
  • Expect long odds and very low densities across the desert as a whole.

Pro tips

  • Water dictates everything in the desert — map every spring, guzzler, and creek and plan your hunt around them.
  • Fuel up and carry extra; you can drive all day out here and never pass a gas station.
  • The isolated 'sky island' ranges each hold their own game — pick a range, learn it, and don't try to hunt the whole desert.
  • For bighorn or a mature desert buck, the payoff is in the most remote, hardest-to-reach country.
  • Keep Dugway Proving Ground and Fish Springs NWR clearly on your map — the military range is closed and the refuge restricted.
  • Carry full recovery and repair gear; a breakdown out here is a serious situation, not an inconvenience.

Watch out for

  • !Dugway Proving Ground (military, closed) and Fish Springs NWR restrict access — know the boundaries.
  • !Water is genuinely life-or-death scarce; never rely on finding it in the field.
  • !Remoteness is extreme — no cell service, no services, huge distances; travel prepared and tell someone your plan.
  • !Rough, remote roads become impassable when wet and can shred tires when dry.
  • !Fire and dust storms can sweep the open desert; heat is a real early-season hazard.

Logistics

This is remote, self-sufficient country. Stock up on fuel, water, food, and spare tires in Delta, Eureka, Tooele, or Fillmore before heading in — interior services are essentially nonexistent, and Callao and Ibapah are tiny outposts. Carry recovery gear, extra fuel, and paper maps; cell service is absent across most of the unit. Dispersed camping is unlimited on the vast BLM and state ground. Distances between ranges are measured in hours.

Nearest towns: Delta, Eureka, Vernon, Tooele, Callao, Ibapah, Fillmore

Nearby units

FAQ

How big is Unit 904 in Utah?
Unit 904 (West Desert) covers about 11,421 square miles, ranging from roughly 4,400 to 12,087 feet in elevation. Area is computed from the unit boundary polygon.
How much public land is in Unit 904?
Approximately 90% of the unit is public land. Primary managers: BLM, SITLA, USFS Uinta-Wasatch-Cache NF, military, private. Always verify ownership boundaries on the ground.
What species does the catalog list for Unit 904?
Pronghorn, Mule Deer, Bighorn Sheep, Rocky Mountain Elk, Cougar, Black Bear. For seasons, tags, and regulations, use the official Utah agency resources linked on this page — this page carries no regulatory information.

Put Unit 904 on your map.

Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.