Unit 28

Steep, forested Lemhi County drainage with limited water access and significant terrain complexity.

Hunter's Brief

Unit 28 covers high-elevation drainages across Lemhi County's mountainous terrain, dominated by dense forest and steep topography ranging from low valleys near 3,000 feet to alpine peaks above 9,900 feet. Road access is moderate but terrain difficulty is high—this is backcountry country requiring navigation skills and route-finding ability. Water can be scarce despite several named streams and springs; reliability varies seasonally. White-tailed deer habitat transitions through forest types with elevation, making this a route-intensive unit that rewards hunters willing to work the drainages and ridges.

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Terrain Complexity
7
7/10
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Unit Area
1,310 mi²
Vast
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Public Land
97%
Most
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Access
1.1 mi/mi²
Fair
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Topography
67% mountains
Steep
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Forest
53% cover
Dense
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Water
0.2% area
Limited

Terrain Deep Dive

Landmarks & Navigation

Castle Lakes and Deer Lake provide high-elevation reference points visible from ridge systems for navigation and glassing. The Yellowjacket Mountains form the unit's eastern backbone with named summits (Gant Mountain, Dutchmans Hump, Black Mountain) serving as orientation markers. Lower drainages feature named falls and rapids—Devlin Falls and Napias Creek Falls—that indicate major water features and potential hazards during high water.

Williams Creek Summit and Morgan Creek Summit are key saddle points between drainages. These landmarks help orient in a complex drainage system where ridge-and-valley navigation is essential.

Elevation & Habitat

Elevations span from 3,000-foot valley floors along major rivers to nearly 10,000-foot peaks, with median elevation around 7,000 feet placing most terrain in higher-country zone. Dense forest dominates throughout—mixed conifer stands of Douglas fir, spruce, and lodgepole, with understory transitions reflecting moisture gradients. Lower elevations feature wet meadow complexes like Frog Meadows and Camas Meadows that break the timber.

Upper slopes thin into alpine ridges with scattered whitebark pine. White-tailed deer occupy the forested mid-elevations extensively, using meadows seasonally and riparian corridors for winter range.

Elevation Range (ft)?
3,0129,921
02,0004,0006,0008,00010,000
Median: 6,985 ft
Elevation Bands
8,000–9,500 ft
17%
6,500–8,000 ft
49%
5,000–6,500 ft
26%
Below 5,000 ft
9%

Access & Pressure

Over 1,400 miles of roads exist, but road density is hard to quantify across this vast area—many are rough pack trails or seasonal Forest Service roads. The main access corridors follow river valleys where jeep roads penetrate several drainages; ridges and upper creeks are foot traffic only. Pressure concentrates near road-accessible lower drainages and meadow systems; backcountry terrain receives lighter use but requires multi-day hunts or spike camps.

Fair accessibility paradoxically means those willing to hike away from vehicles find solitude quickly. Staging from Yellowjacket or Leesburg is typical for most hunters.

Boundaries & Context

Unit 28 encompasses the Deadwood River drainage above Nine Mile Creek, the Middle Fork of the Salmon River system, and portions of the South Fork of the Payette River drainage across Lemhi and Custer counties. The unit's spine follows major river systems—the Salmon, Middle Fork, and South Fork Payette—with boundaries defined by creek confluences and drainage divides rather than straight lines. Small settlements like Yellowjacket and Leesburg sit on the periphery; the interior is roadless or lightly roaded backcountry.

This is vast terrain where rivers and drainages define geography and access.

Land Cover Breakdown?
Mountains (forested)
34%
Mountains (open)
32%
Plains (forested)
19%
Plains (open)
14%
Water
0%

Water & Drainages

The Salmon River, Middle Fork Salmon, and South Fork Payette form the unit's arterial water system—perennial and reliable but not accessible for camp water everywhere. Numerous named creeks (Duck, Spider, Pole, Panther, Weasel) drain the ridges, though many are seasonal or unreliable in late summer. Multiple springs exist (Corbett Spring, Hot Springs, Sheephorn Spring, Magpie Spring), but coverage is spotty across steep terrain.

This is limited-water country requiring pre-planning and knowledge of seasonal spring reliability. Water scarcity drives hunt timing and camp logistics—early and mid-season hunting preferable when creeks run stronger.

Hunting Strategy

White-tailed deer are the primary species here, thriving in the dense forest matrix and meadow-to-timber edges throughout the unit. Early season (September) hunting focuses on upper meadows and saddles where deer feed during cool mornings; rifle season (October-November) shifts toward lower elevations and riparian cover as rut activity peaks. Ridgeline glassing from vantage points like Gant Mountain or Fishing Ridge reveals movement patterns in parallel drainages below.

The steep terrain and drainage complexity favor hunters who can move efficiently cross-country and read topography—this isn't a spot-and-stalk unit, but rather a drainage-by-drainage reconnaissance hunt. Plan for 4-7 day trips to properly cover territory.