Unit 37

Grassy Lake

High-elevation timbered terrain straddling the Wyoming-Idaho border near Yellowstone's western edge.

Hunter's Brief

This is dense, rolling forest country at medium-to-high elevation where the Teton Range transitions toward Yellowstone. The unit sits on the state line with Targhee National Forest to the north and Grand Teton National Park as a southern boundary. Access is fair with roughly 150 miles of road scattered through the unit, though terrain complexity and dense timber mean you'll do significant hiking to find productive ground. Limited water sources scattered through drainages make water planning critical. Moose are the target species in this timbered, complex terrain.

?
Terrain Complexity
7
7/10
?
Unit Area
187 mi²
Compact
?
Public Land
100%
Most
?
Access
0.8 mi/mi²
Fair
?
Topography
26% mountains
Rolling
?
Forest
82% cover
Dense
?
Water
0.6% area
Moderate

Terrain Deep Dive

Landmarks & Navigation

Key navigation and glassing features include Lake of the Woods, Loon Lake, and several other water bodies that serve as waypoints in this complex terrain. The major passes—Nord Pass, Conant Pass, and Dead Horse Pass—provide logical travel corridors through the rolling topography and are useful for understanding drainage systems. Notable peaks like Hominy Peak and Mount Nord offer orientation points, though dense timber limits long-distance glassing opportunities.

Winegar Creek, Blind Creek, and Burnt Fork Creek are major drainages that structure movement through the unit and concentrate moose habitat. Badger Spring and Crystal Spring mark reliable water, valuable in a unit where finding consistent water sources requires knowledge of the landscape.

Elevation & Habitat

Terrain rises from roughly 6,000 feet in lower drainage bottoms to nearly 11,000 feet on upper ridges, creating a substantial elevation gradient within the unit. The landscape is dominated by dense conifer forest—primarily lodgepole pine, spruce, and fir—with openings occurring at higher elevations and in scattered meadow complexes throughout the drainages. Lower elevation areas feature more open forest mixed with willow bottoms and riparian vegetation along creeks, while upper slopes transition to increasingly dense timber and subalpine conditions.

This forested, rolling terrain offers excellent moose habitat in the willow-rich drainages and creek bottoms scattered across the unit.

Elevation Range (ft)?
6,02410,889
02,0004,0006,0008,00010,00012,000
Median: 7,297 ft
Elevation Bands
Above 9,500 ft
2%
8,000–9,500 ft
21%
6,500–8,000 ft
62%
5,000–6,500 ft
15%

Access & Pressure

Roughly 150 miles of road network provides fair access, though the distribution across moderate-sized terrain means many areas require hiking from road ends. Most access likely comes from the perimeter—Targhee to the north, Highway 26/27 corridor to the south—rather than a network of interior roads. Road density and terrain complexity both suggest that hunters can find solitude by moving beyond immediate road-end camping areas.

The combination of dense forest, rolling terrain, and scattered trail systems means that pressure may concentrate in accessible drainages while upper basins and rolling ridges remain lightly hunted. Physical complexity of the terrain naturally limits hunter distribution.

Boundaries & Context

Unit 37 occupies the transitional zone between the Yellowstone ecosystem and the Teton Range, anchored by the Wyoming-Idaho state line on the west. The unit stretches from Badger Creek in the south northward to Yellowstone National Park's boundary, with Targhee National Forest forming most of the eastern boundary and Grand Teton National Park marking the southern edge. This geographic position places you at the convergence of three major public land designations, creating a moderately-sized unit that's entirely or nearly entirely public land.

The surrounding area is characterized by high-country terrain and deep wilderness character.

Land Cover Breakdown?
Mountains (forested)
17%
Mountains (open)
9%
Plains (forested)
65%
Plains (open)
9%
Water
1%

Water & Drainages

Despite a 'Limited' water badge, this unit benefits from numerous perennial creeks and springs tied to significant snowmelt from the high terrain. Major drainage systems include Winegar Creek, Blind Creek, Burnt Fork Creek, and the South Fork of Badger Creek running along the western boundary—all reliable for water planning. Several named lakes (Lake of the Woods, Loon Lake, Hidden Lake, Fish Lake, and others) provide water sources but are scattered and may require route-finding.

The real water story is in the drainages and spring complexes; willows concentrate around these creeks, which is where moose congregate. Understanding which creeks and springs hold water reliably through the season is critical for hunting strategy.

Hunting Strategy

Unit 37 is moose country, with the dense forest and creek-bottom habitat providing classic moose environment. The unit's value lies in the extensive willow-rich drainages where moose feed and bed. Hunting strategy centers on working creek drainages early and late in the season, focusing effort on areas with heaviest willow concentration—particularly around the meadow complexes (Coyote Meadows, Squirrel Meadows, Indian Meadows) and willow flats like Winegar Hole.

Early season offers dry hiking conditions but concentrated moose in high basins; as the season progresses, focus shifts to lower drainage bottoms. The rolling, timbered terrain requires patience and careful stalking rather than glassing. Water sources should drive your day-to-day movement—bulls concentrate near feeding and drinking areas in this terrain.