Sheep Mountain

Sheep Mountain is a 31,584-acre Inventoried Roadless Area in the Beaverhead-Deerlodge National Forest of southwestern Montana, set in the montane country of the Gravelly Range and the Greenhorn Range in Madison County. Named landforms include Sheep Mountain itself, Baldy Mountain, and Fine Ridge, with gulches at Sawlog, French, Morgan, and Company, and the broad subalpine openings of Pole Patch and Dark Hollow. The hydrology is significant. Cinnamon Bear Creek, Brown Bear Creek, White Bear Creek, Black Bear Creek, the North, South, and Meadow Forks of Greenhorn Creek, Wigwam Creek and its North Fork, Buckskin Creek, Willow Creek and Little Willow Creek, Jack Creek, Idaho Creek, Arasta Creek, Gumbo Creek, Coyote Creek, Still Creek, and Warm Springs Creek all rise within the area, fed by named springs at Marshall, Maloney, Road, Pole Patch, and Fine Ridge, and by standing water at Talus Lake, Swan Lake, Cirque Lake, Romy Lake, and Crockett Lake.

The vegetation reflects the area's broad elevation range. Central Rockies Douglas-fir Forest occupies the lower slopes, with Douglas-fir (Pseudotsuga menziesii) over arrowleaf balsamroot (Balsamorhiza sagittata) and silvery lupine (Lupinus argenteus). Rocky Mountain Lodgepole Pine Forest dominates the mid-elevation benches with even-aged stands of lodgepole pine (Pinus contorta). Intermountain Mountain Sagebrush Steppe opens the foothill country with big sagebrush. Higher ground carries Rocky Mountain Dry Subalpine Spruce-Fir Forest, Northern Rockies Subalpine Woodland and Parkland with federally Threatened whitebark pine (Pinus albicaulis), and broad Rocky Mountain Subalpine Meadow openings. The highest country supports Rocky Mountain Alpine Meadow, Rocky Mountain Alpine Dwarf-Shrubland, and Rocky Mountain Alpine Rocky Terrain. Glacier lily (Erythronium grandiflorum) and American bistort (Bistorta bistortoides) bloom in the subalpine meadows; western blue iris (Iris missouriensis), northern mule's-ears (Wyethia amplexicaulis), and sticky geranium (Geranium viscosissimum) fill the lower meadow zones. Rocky Mountain Aspen Forest, with quaking aspen (Populus tremuloides), marks moister swales and avalanche tracks.

Wildlife uses the elevational variety and the structural diversity of the conifer-meadow-alpine mosaic. Red-tailed hawk (Buteo jamaicensis) and Swainson's hawk (Buteo swainsoni) hunt the open ridges and grasslands. American badger (Taxidea taxus) dens in the foothill grasslands; bushy-tailed woodrat (Neotoma cinerea) inhabits the rocky outcrops and talus of the alpine terrain. Columbia spotted frog (Rana luteiventris) breeds in the spring-fed pools and along the headwater channels of Wigwam, Willow, and Greenhorn Creeks. The mosaic of forest, sagebrush, and subalpine meadow supports a strong big-game community using the area's seasonal range. Portions of this area fall within the potential range of several federally listed species; see the Conservation section for details.

A visitor on the long Clover Meadows snowmobile route — 23.1 miles of multi-use tread crossing the high country — would pass from lodgepole and Douglas-fir stands into subalpine meadow with glacier lily in early summer and into open alpine terrain above treeline. The North Fork Greenhorn Creek trail descends through the conifer-streamside zone where moose use the willow-lined channels and woodrat sign appears on the cliff bands. From the high cirque lakes — Swan, Cirque, Romy, Crockett — the alpine basins below Sheep Mountain hold standing water in country otherwise defined by moving creeks.

The 31,584-acre Sheep Mountain Inventoried Roadless Area lies in Madison County in southwestern Montana, within the Madison Ranger District of the Beaverhead-Deerlodge National Forest. The mountain country drained by Warm Springs Creek, Greenhorn Creek, Wigwam Creek, Jack Creek, and Willow Creek belonged to a region used by Indigenous peoples for thousands of years. As one history of the Virginia City country records, "the Shoshone were here before 1600; the Cree and the Bannocks and Sheepeaters came later" [1]. The broader Madison River valley to the east drew "diverse tribes from throughout the West for a common purpose: buffalo," with the Madison Buffalo Jump in continuous use across that era [2]. Indigenous use of these mountains and valleys did not end with the arrival of non-Native miners — initially, "Native Americans didn't make life easy for the first miners. Trails were closed, and would-be settlers were attacked on their way west" [1].

The transformation of Madison County by mining began on May 26, 1863, when Barney Hughes, Thomas Cover, Henry Rodgers, William Fairweather, Henry Edgar, and Bill Sweeney camped along Alder Creek and panned $2.40 worth of gold from a single rimrock pan [3]. The discovery launched the largest of all Montana gold strikes; "in the early 1860s, during the first three seasons, an estimated $30 million worth of gold was removed from the gulch" [3]. Virginia City was platted by the Varina Town Company on June 16, 1863, and incorporated the same day by a miners' court — making it the first incorporated town in what became Montana [1][3]. Within a year an estimated 7,000 people were "crowded into the narrow mountain gulch," and the population eventually exceeded 10,000 [1]. Virginia City became the territorial capital in 1865, holding that role until the capital was relocated to Helena in 1875 [1][3].

The mining economy persisted long after the placers were worked. Hydraulic methods arrived in 1867; "from 1898 through 1922, large floating dredges chewed up the ground, destroying several communities in their path and leaving behind distinctive tailings and dredge ponds as far upstream as Virginia City" [3]. A branch-line railroad reached Alder in 1901 [3]. Lode mining at Summit in the upper gulch revived in the 1930s with the rise in gold prices, before all Alder Gulch gold mining was temporarily closed in 1942 under a wartime prohibition [3]. The surrounding mountain country — including the Sheep Mountain area — supported the freight, fuel-wood, livestock, and ranching economies that fed the gulch through every phase.

Federal forest administration of the surrounding ranges was established in the same period of forest reserve creation. The Beaverhead National Forest was established in 1908, eventually encompassing the East and West Pioneer Mountains and adjacent country [4]. In 1996, the Beaverhead and Deerlodge national forests were combined into a single 3.36-million-acre administrative unit [4]. The Sheep Mountain area lies within this consolidated forest, in the Madison Ranger District. It is protected under the 2001 Roadless Area Conservation Rule.

Vital Resources Protected

• Headwater Stream Integrity: The Sheep Mountain area is a major hydrologic source, with Cinnamon Bear Creek, Brown Bear Creek, White Bear Creek, Black Bear Creek, the North, South, and Meadow Forks of Greenhorn Creek, Wigwam Creek, Willow Creek, Jack Creek, Idaho Creek, Coyote Creek, and Warm Springs Creek all rising within its boundaries. Named springs at Marshall, Maloney, Road, Pole Patch, and Fine Ridge, and cirque lakes at Swan, Cirque, Romy, and Crockett supplement the surface drainage. The roadless condition keeps these channels and spring sources free of the chronic sediment input that road cut-and-fill construction generates in steep montane terrain.

• High-Elevation and Alpine Habitat: Northern Rockies Subalpine Woodland and Parkland on the high ground includes the federally Threatened whitebark pine (Pinus albicaulis). The highest country supports Rocky Mountain Alpine Meadow, Rocky Mountain Alpine Dwarf-Shrubland, and Rocky Mountain Alpine Rocky Terrain — community types of limited extent regionally. The roadless condition limits the disturbance corridors that accelerate blister rust spread in whitebark and the trampling and invasive-species pressure that compromise alpine communities.

• Connected Big-Game and Listed-Species Habitat: The unfragmented conifer-meadow-alpine mosaic provides movement and forage habitat for resident big game and for federally Threatened species including Canada lynx (Lynx canadensis), grizzly bear (Ursus arctos horribilis), and North American wolverine (Gulo gulo luscus), all of which depend on large, unroaded blocks for foraging, denning, and dispersal.

Potential Effects of Road Construction

• Sedimentation of Headwater Channels: Cut slopes and unpaved road surfaces in the steep gulches of the Gravelly and Greenhorn Ranges would deliver chronic fine sediment to Greenhorn Creek and its forks, Wigwam Creek, Willow Creek, and the Bear Creek group. NatureServe ecosystem assessments for Central Rockies Douglas-fir Forest and Rocky Mountain Lodgepole Pine Forest identify soil loss/erosion from road disturbance as a primary mechanism that "negatively impact[s] the water quality within the immediate watershed." Spring discharge can also be altered when road cuts intercept or redirect shallow subsurface flow.

• Alpine and Whitebark Pine Disturbance: Road construction into the high subalpine and alpine country around Sheep Mountain and Baldy Mountain would create vectors for the spread of white pine blister rust (Cronartium ribicola) into whitebark pine stands and would directly disturb Rocky Mountain Alpine Meadow and Alpine Dwarf-Shrubland communities through cut-and-fill and edge expansion. Alpine communities, once disturbed, recover on geologic time scales.

• Fragmentation of Lynx, Grizzly Bear, and Wolverine Habitat: Road corridors create the linear features that Canada lynx, grizzly bear, and wolverine avoid, splitting the area's continuous forest into smaller patches with reduced interior habitat. NatureServe documents "roads & railroads" as direct stressors for lynx. Once a road network is established in a previously unroaded block, the behavioral avoidance and elevated mortality risk persist for the operating life of the road system and are difficult to reverse without complete decommissioning.

The 31,584-acre Sheep Mountain Inventoried Roadless Area, in the Gravelly and Greenhorn Ranges of the Beaverhead-Deerlodge National Forest, is a mixed-use montane backcountry crossed by eight documented trails. The country is mountainous and montane, anchored by Sheep Mountain, Baldy Mountain, and Fine Ridge, with broad subalpine openings at Pole Patch and Dark Hollow and cirque lakes scattered across the upper basins. No designated trailheads or campgrounds are documented within the area; access is from the boundary in the Madison Ranger District.

Trails. The Clover Meadows snowmobile route (SNO-6153), 23.1 miles, is the longest trail and serves in summer as a multi-use hiker/horse/bike route across the high country. The North Fork Greenhorn Creek Trail (6047), 6.2 miles, and Cherry Creek (6364), 4.9 miles, traverse the upper drainages. White Bear (6415), 3.3 miles, South Fork Greenhorn Creek (6048), 3.2 miles, Fine Ridge (6414), 3.2 miles, and Meadow Fork (6647), 2.9 miles, make up the mid-length network. The Willow Creek trail (6043), 2.0 miles, drops into the namesake drainage.

Hunting. The conifer-sagebrush-subalpine mosaic supports big game across the area. The Greenhorn and Wigwam drainages and the wide openings at Pole Patch and Dark Hollow give hunters reliable forage zones to work from the trail network. Hunting is under Montana Fish, Wildlife & Parks regulations; consult the current hunting district maps and seasons.

Fishing. The area is the headwater source for streams that contribute to the Madison and Ruby River systems. Cinnamon Bear Creek, Brown Bear Creek, White Bear Creek, Black Bear Creek, Wigwam Creek and its North Fork, Willow Creek, Jack Creek, and the three forks of Greenhorn Creek all rise within the area. Standing waters at Swan Lake, Cirque Lake, Romy Lake, Crockett Lake, and Talus Lake are high-country lakes accessed only on foot or by horse from the trail network. Anglers should consult Montana FWP regulations for stream and lake-specific species, seasons, and gear restrictions.

Birding and Wildlife Watching. Four eBird hotspots fall within 24 km of the area, the most active at Ruby River Reservoir with 125 species across 50 checklists; Virginia City (town) also records 100 species. Within the area, red-tailed hawk and Swainson's hawk hunt the open ridge country; bushy-tailed woodrat sign appears on the rocky outcrops of the alpine zone; Columbia spotted frog breeds in the spring-fed pools and along the headwater channels.

Photography and Backcountry Travel. The combination of cirque lakes, alpine meadow with glacier lily and American bistort blooms, subalpine whitebark pine ridges, and the wide openings of Pole Patch and Dark Hollow gives photographers strong landscape variety. Western blue iris and northern mule's-ears bloom in the lower meadow zones in early summer. The high cirque basins are distinctive subjects, with five named lakes scattered across the upper country.

Snowmobiling and Winter Travel. The long Clover Meadows snowmobile route, at 23.1 miles, makes Sheep Mountain a substantial winter motorized travel area in the Madison Ranger District. Cross-country skiers and snowshoers also use the trail network and the open subalpine meadows.

Recreation in Sheep Mountain depends in a direct way on the roadless condition. The absence of an interior road network is what makes the upper Greenhorn, Wigwam, and Bear Creek drainages small headwater fisheries; what keeps the high cirque lakes — Swan, Cirque, Romy, Crockett, Talus — walk-in destinations; and what allows the long Clover Meadows route to function as a backcountry traverse rather than a vehicle shortcut. Adding a road network would convert this from a foot, stock, and ski backcountry into a vehicle-accessed corridor.