Unit 10
High alpine terrain above 9,500 feet with steep ridges, hanging valleys, and demanding terrain.
Hunter's Brief
Unit 10 is serious high-country terrain anchored around the Continental Divide, with elevations climbing well above 9,500 feet and some peaks reaching 13,294 feet. Access comes via rough forest service roads and a few highways on the periphery—this is not drive-in country. Water is scarce at elevation; hunters need to plan around limited springs and seasonal runoff. Terrain complexity is extreme (9/10), featuring steep slopes, broken cliffs, and exposed ridges that demand strong navigation skills and physical conditioning. This is bighorn sheep country requiring glassing from distance and understanding escape terrain.
- Compact: under 200 sq mi
- Moderate: 200 - 800 sq mi
- Vast: over 800 sq mi
- Few: under 25%
- Some: 25 - 60%
- Most: over 60%
- Limited: under 0.7 mi/mi² (backcountry)
- Fair: 0.7 - 1.5 mi/mi²
- Connected: over 1.5 mi/mi² (well-roaded)
- Flat: under 20% mountains
- Rolling: 20 - 55%
- Steep: over 55%
- Sparse: under 20%
- Moderate: 20 - 50%
- Dense: over 50%
- Limited: under 0.3% area
- Moderate: 0.3 - 2% area
- Abundant: over 2% area
Hunt Schedule
1 huntTerrain Deep Dive
Landmarks & Navigation
Navigate by major passes and peaks: Togwotee Pass and Union Pass frame the unit's primary road access, while the Continental Divide runs the spine and provides orientation reference. Key summits include Square Top Mountain, Union Peak, and Torrey Peak—unmistakable landmarks for glassing and route planning. The Three Waters Mountain ridge system offers vantage points across the unit.
Major drainages like Roaring Fork, Torrey Creek, and Whiskey Creek provide travel corridors through otherwise complex terrain. Granite Lake, Ring Lake, and Fish Lake areas anchor specific basins. Use these features to establish position—navigation here is map-and-compass essential, not GPS convenience.
Elevation & Habitat
This is vertical country—everything above 6,700 feet minimum, with most terrain between 9,000 and 13,000 feet. The median elevation near 9,200 feet means you're operating in true alpine/subalpine zones where forested slopes transition to exposed ridges and rock. Moderate forest coverage means scattered timber islands punctuate the high basins and draws, but the ridgeline country and peaks break treeline extensively.
This elevation band supports bighorn sheep habitat: windswept ridges that shed snow, broken terrain with escape routes, and sparse forage on alpine tundra and rocky slopes. Summer grazing pushes sheep high; winter movement heads lower into protected basins.
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Start free trial ›Access & Pressure
Nearly 275 miles of total road network sounds substantial, but these are forest service tracks and rough mountain roads—not maintained highways. Union Pass Road provides the primary access from the south, while Highway 287 borders the north. The Fair accessibility rating reflects what those numbers actually mean: rough roads leading to trailheads and staging areas, not direct access to hunting country.
Terrain complexity (9/10) and elevation create natural pressure dispersal; most hunters won't push deep into the high basins. The hardest part is simply getting to position where sheep hunting makes sense—multiple miles of boot travel from any road end.
Boundaries & Context
Unit 10 wraps around the headwaters country between Highway 287 and the Union Pass Road in the Wind River Range high country. The western boundary follows the Continental Divide from near Togwotee Pass southwesterly along the crest, encompassing the Roaring Fork and Torrey Creek drainages that feed the Green River. The eastern side drops into the Whiskey Basin and Bomber Basin areas, with Highway 287 forming the northern anchor.
This is sprawling alpine and subalpine terrain that spans roughly north-south for 20+ miles, the type of country that rewards serious preparation and penalizes shortcuts.
Water & Drainages
Water is limited and seasonal at elevation. The Green River system feeds through the lower western boundary, but hunters working the high basins depend on springs and creeks that run strong with snowmelt (June-August) then diminish. Key water sources include Little Warm Spring and Jakeys Fork Spring, plus Warm Spring Creek in the lower canyons.
Whiskey Creek, Snowshoe Creek, and North Fork Crooked Creek are reliable drainages but follow canyon bottoms far below glassing country. Plan water stops carefully; cache systems or long carries between water sources may be necessary depending on season. Late summer/fall hunts especially require understanding which springs hold water.
Hunting Strategy
Unit 10 is bighorn sheep habitat above all else. The steep, broken terrain with cliffs and escape routes, combined with high elevation and sparse vegetation, defines classic Dall sheep country. Glassing is paramount—identify sheep on distant ridges and work perpendicular routes to avoid detection.
Early season (August-September) finds sheep on high windswept ridges and saddles; late season pushes them into lower basins and canyons where snow accumulation forces migration. Water becomes critical late season—sheep must drink, typically at dawn/dusk near accessible springs. Physical conditioning is non-negotiable; this terrain demands it.
Bring topo maps, binoculars, and patience. Sheep in this unit reward methodical stalking, not quick fixes.
Weather & Conditions
?Historical normals, not a forecast
Built from 10 years of NASA POWER data (MERRA-2 satellite reanalysis) at this unit's location.
Temperatures and conditions below reflect the unit's dominant elevation band (Valley · 8800 ft — 52% of unit area).
For elevation-by-elevation detail and live planning tools, use the TAGZ app.
- Daytime high / Overnight low — median daily maximum and minimum for each day of the year.
- Shaded band — the 10th–90th percentile spread across years.
- Freeze line — 32 °F reference for frost & snow risk.
Year-round temperature
Moon phase
?Illumination for each night of the selected two weeks, computed from lunar ephemeris. New and full moons are emphasised — useful for planning around moonlight.Typical conditions
?A snapshot of the selected two weeks, from long-run daily normals at the unit's dominant elevation.
- Day / night — median daytime high & overnight low; the sub-line is the typical 10th–90th percentile spread across years.
- Wet days — days with measurable precipitation (≥ 1 mm, WMO standard). Not a forecast.