Moriah - West Slope

Moriah - West Slope is a 14,737-acre Inventoried Roadless Area on the Humboldt-Toiyabe National Forest, set on the western flank of Mount Moriah in the North Snake Range of White Pine County, Nevada. The terrain is montane and deeply incised: a long sequence of west-draining canyons — Sheep Canyon, Dry Canyon, Eldridge Canyon, Red Canyon, Trail Canyon, Salt Marsh Canyon, Cricket Canyon, Ganders Canyon, Water Canyon, and Fourmile Canyon — cuts the slope between the high crest and the floor of Spring Valley. Water here is major rather than incidental. The area sits in the Negro Creek watershed (HUC12 160600080405) and carries the headwaters of Silver Creek (Main and Left Forks), with Salt Creek and Negro Creek itself draining the southern reaches. Pipe Spring, Chokecherry Spring, Rock Spring, and Silver Creek Spring supply year-round water in an otherwise dry rain shadow.

Vegetation is arranged in distinct bands. The lowest reaches carry Intermountain Salt Desert Scrub and Great Basin Dry Sagebrush Shrubland, opening to Great Basin Big Sagebrush Shrubland and Intermountain Mountain Sagebrush Steppe on the long alluvial fans. Mid-slope canyons hold Great Basin Pinyon-Juniper Woodland of single-leaf pinyon, Utah juniper, and Rocky Mountain juniper (Juniperus scopulorum), with curl-leaf mountain mahogany (Cercocarpus ledifolius) and Intermountain Mountain Mahogany Woodland on rocky exposures. Above roughly 8,000 feet, Southern Rockies Mixed Conifer Forest and Southern Rockies Ponderosa Pine Woodland of white fir (Abies concolor), Douglas-fir (Pseudotsuga menziesii), and Engelmann spruce (Picea engelmannii) carry north-facing draws and shaded canyons. Intermountain Aspen and Conifer Forest and Rocky Mountain Aspen Forest of quaking aspen (Populus tremuloides) hold the moist swales. Highest ground supports Great Basin Subalpine Bristlecone Pine Woodland of bristlecone pine (Pinus longaeva) and limber pine (Pinus flexilis), with Rocky Mountain Subalpine Meadow openings and the critically imperiled Snake Range thistle (Cirsium viperinum) on alpine substrates.

Wildlife organizes by these bands. Mule deer (Odocoileus hemionus) and Rocky Mountain elk (Cervus canadensis) hold the aspen-conifer transition for summer forage. Golden eagle (Aquila chrysaetos) and American kestrel (Falco sparverius) hunt the open canyon mouths and rim country. In the pinyon-juniper, pinyon jay (Gymnorhinus cyanocephalus) caches and disperses single-leaf pinyon seed alongside Clark's nutcracker (Nucifraga columbiana). Broad-tailed hummingbird (Selasphorus platycercus) and rufous hummingbird (Selasphorus rufus) move through Eaton's firecracker (Penstemon eatonii) and Wyoming Indian-paintbrush (Castilleja linariifolia) on the open slopes. Mountain bluebird (Sialia currucoides) takes the aspen edges, and Arizona mountain kingsnake (Lampropeltis pyromelana), a Great Basin specialty, holds the rocky pinyon-juniper. Common side-blotched lizard (Uta stansburiana) and tiger whiptail (Aspidoscelis tigris) bask on the warm canyon-mouth substrates; uinta chipmunk (Neotamias umbrinus) holds the conifer zone. Portions of this area fall within the potential range of several federally listed species; see the Conservation section for details.

A walk into the West Slope from Spring Valley begins on a dusty alluvial fan in shadscale and sage, the air heavy with crushed sagebrush. The grade steepens into Silver Creek Canyon among pinyon and juniper, opens into mahogany and ponderosa pine, and rises into aspen and Engelmann spruce. On the highest ground, ancient bristlecone pines hold the wind-cut ridge with views west across Spring Valley and east to the summit pyramid of Mount Moriah.

Moriah - West Slope is a 14,737-acre Inventoried Roadless Area on the western flank of Mount Moriah in the North Snake Range, White Pine County, Nevada. The area is protected under the 2001 Roadless Area Conservation Rule and managed within the Ely Ranger District of the Humboldt-Toiyabe National Forest, USFS Intermountain Region. It abuts the Mount Moriah Wilderness, designated in 1989, on the west side of the range.

Mount Moriah and its drainages are the traditional homeland of the Newe (Western Shoshone) and Goshute peoples [1]. Archaeological evidence of human presence on the range reaches back at least 12,000 years. Shallow caves, many of which show evidence of prehistoric habitation, are common across the range [2], and cultural affiliations tie these sites to ancestral Numic-speaking peoples, including Western Shoshone (Newe) and Southern Paiute groups, who used the area for seasonal hunting of bighorn sheep, deer, and pronghorn and for gathering pinyon nuts, roots, and seeds [3]. Stratified deposits in the Smith Creek Canyon caves on the east side of the range contain hearths and charcoal dated to 12,000–10,000 years before present, alongside extinct fauna including horse and camelid bones modified by humans [3].

Euro-American activity arrived with the silver-and-gold rushes of the post–Civil War decades. The first substantial mining impact to the ecosystem of Mount Moriah began with the discovery of gold in the Osceola District in 1872 [4]. By 1882 the town of Osceola was a community of 1,500 people, and over the next decade the demand for fuel and lumber pushed into the North Snake Range, peaking in 1889 with the construction of the 18-mile East Ditch [4]. By 1905, most of the mining ceased and the town emptied [4]. Commercial grazing followed close behind. By 1906, the Snake Range was recognized as being "fully stocked with sheep and cattle and overrun with wild horses" [4]; by 1917, the Mount Moriah division alone carried an estimated 4,000 sheep and 500 cattle [4].

Federal management was a response to that disorder. In September 1906, the Acting Secretary of the Interior temporarily withdrew the proposed Osceola Forest Reserve, which included both the North and South Snake Ranges; the withdrawal became permanent in 1909 with the formation of the larger Nevada National Forest, which absorbed the former Osceola Forest Reserve [4]. The Humboldt-Toiyabe National Forest was created in 1994 by the consolidation of the former Toiyabe and Humboldt National Forests [4]. The wilderness movement reached Mount Moriah following the 1964 Wilderness Act: the USFS RARE II review of 1979 recommended 97,205 acres of the North Snake Range for further wilderness planning [3], and Mount Moriah was initially designated with the passage of the Nevada Wilderness Protection Act of 1989 with 82,000 acres [1]. The White Pine County Conservation, Recreation, and Development Act of 2006 added adjacent National Forest and BLM lands, expanding the wilderness to roughly 89,680 acres [1]. The Moriah - West Slope roadless area carries this same management legacy on the range's western flank, holding the unroaded shoulder of the wilderness against the long descent into Spring Valley.

The 14,737-acre Moriah - West Slope Inventoried Roadless Area protects the western drainages of Mount Moriah in the North Snake Range, holding the unroaded transition from Spring Valley sage flats to bristlecone-pine crest. Documented species of conservation concern include Pahrump poolfish (Empetrichthys latos, Endangered), Suckley's cuckoo bumble bee (Bombus suckleyi, Proposed Endangered), and monarch butterfly (Danaus plexippus, Proposed Threatened). The endemic Snake Range thistle (Cirsium viperinum) is IUCN Critically Imperiled.

Vital Resources Protected

• Cold Headwater Stream Integrity: Roadless conditions on the West Slope keep the headwaters of Silver Creek (Main and Left Forks), Salt Creek, and Negro Creek free of cut-and-fill sediment and culvert barriers, and hold the riparian canopy of Rocky Mountain Subalpine Streamside Woodland and Great Basin Foothill Streamside Woodland intact. Four named springs — Pipe Spring, Chokecherry Spring, Rock Spring, and Silver Creek Spring — remain undisturbed at their recharge points, preserving the cold-water aquatic habitat and the only persistent surface water on the west flank of the range.

• Elevational Gradient and Bristlecone-Pine Climate Refugia: The roadless area spans an unbroken gradient from Intermountain Salt Desert Scrub on the valley floor through Great Basin Pinyon-Juniper Woodland (47.8 percent of the area), Intermountain Mountain Mahogany Woodland (20.7 percent), and Southern Rockies Mixed Conifer Forest (11.0 percent) to Great Basin Subalpine Bristlecone Pine Woodland (4.4 percent) on the crest. This continuous gradient lets temperature- and moisture-sensitive species — bristlecone pine, limber pine, Engelmann spruce, Snake Range thistle — shift upslope as climate changes, a function lost once the gradient is bisected.

• Old Pinyon-Juniper and Mountain Mahogany Canopy Continuity: Nearly 70 percent of the area is pinyon-juniper or mountain mahogany woodland. Roadless conditions hold the single-leaf pinyon canopy continuous at the scale that pinyon jay — a species in steep regional decline — and Clark's nutcracker need to cache and disperse pine seed. Mountain mahogany on steep rocky slopes provides the high-quality winter browse on which mule deer and Rocky Mountain elk depend.

Potential Effects of Road Construction

• Sedimentation and Hydrological Disruption of Silver Creek: Cut slopes and culverts in the deeply incised canyons of the West Slope intercept shallow subsurface flow, concentrate runoff at point discharges, and deliver chronic fine sediment to Silver Creek and its tributaries. Sediment from cut-and-fill smothers the cold-water substrate and pools, and culverts placed in these narrow drainages act as barriers to aquatic species movement; recharge to the four named springs is sensitive to any change in surface infiltration upslope of their outflows.

• Pinyon-Juniper Fragmentation and Cheatgrass-Driven Fire: Road construction through pinyon-juniper and mountain mahogany opens disturbed cut-and-fill corridors that act as the principal vector for cheatgrass (Bromus tectorum), raising fine-fuel loads and fire frequency in a system in which pinyon, juniper, and curl-leaf mountain mahogany recover on the order of centuries, not decades. Once converted to annual grassland, the woodland that supports pinyon jay caching and mule-deer winter browse rarely returns within a human lifetime.

• Severance of the Elevational Gradient and Bristlecone Climate Refugia: A road cut across the West Slope bisects the continuous transition from valley scrub to bristlecone-pine crest, creating barriers to species movement and persistent edge effects in slow-growing subalpine forest. Bristlecone-pine woodland is the most vulnerable system on the range to white pine blister rust, which spreads more readily in disturbed wet years and which the arid, undisturbed crest has largely escaped — road corridors increase exposure to disease vectors.

The Moriah - West Slope Inventoried Roadless Area covers 14,737 acres on the western flank of Mount Moriah in the North Snake Range, White Pine County, Nevada, within the Ely Ranger District of the Humboldt-Toiyabe National Forest. The area abuts the Mount Moriah Wilderness on the west side and carries 12.8 miles of native-material trail across a deeply incised canyon country rising from Spring Valley to the bristlecone-pine crest. There are no developed trailheads or campgrounds inside the area, and all use is dispersed. Access is by long, narrow Forest Service roads on the Spring Valley side, suited to high-clearance vehicles.

Trail Use and Backcountry Travel. The principal route is the NEGRO CREEK TRAIL (19459), a 4.1-mile native-material hiker trail that climbs the southern canyons toward the high country. The SECOND FORK trail (19119, 3.5 miles, hiker) and the BIG CANYON trail (19006, 2.0 miles, horse) provide the other long approaches. Shorter native-surface trails fill out the network: SHEEP CANYON TRAIL (19536, 0.9 miles), MAIN FORK CREEK TRAIL (19622, 0.6 miles, hiker), SILVER CREEK (19031, 0.7 miles, horse), SOUTH SHEEP CANYON (19612, 0.3 miles), NORTH SHEEP CANYON (19611, 0.1 miles), SOUTH WATER CANYON TRAIL (19607, 0.2 miles), WATER CANYON 3 (19606, 0.2 miles), and the MT MORIAH TRAIL (19613, 0.2 miles, hiker) that connects to the wilderness on the crest. All trails are native material — no graded paths, no bridged crossings, no signed junctions — and travel is open to hikers and horse packers on the marked-use segments.

Hunting. Mule deer (Odocoileus hemionus) use the aspen-conifer transition for summer forage, and Rocky Mountain elk (Cervus canadensis) hold the high country. American kestrel (Falco sparverius) hunts the canyon mouths. Western rattlesnake habitat occurs on warm slopes at lower elevations; hunters should consult current Nevada Department of Wildlife regulations and seasons for all species. The roadless area's continuous habitat from sagebrush to subalpine forest supports the deer-elk movement that defines the hunt here.

Fishing. Cold-water creeks descend the West Slope year-round: Main Fork Silver Creek, Left Fork Silver Creek, Silver Creek, Salt Creek, and Negro Creek, with Pipe Spring, Chokecherry Spring, Rock Spring, and Silver Creek Spring as named recharge sources. The headwater streams are narrow and shaded; anglers should consult current Nevada Department of Wildlife regulations for species and limits before visiting.

Birding. The nearest documented eBird hotspot is Great Basin NP—Strawberry Creek with 117 species across 163 checklists, on the south side of the range. Within the West Slope itself, observers can expect Clark's nutcracker (Nucifraga columbiana) and mountain bluebird (Sialia currucoides) in the aspen-conifer transition, northern flicker (Colaptes auratus) in the pinyon-juniper, American kestrel and golden eagle in the canyon mouths, and common nighthawk (Chordeiles minor) at dusk over the open ridges. Pinyon jay (Gymnorhinus cyanocephalus) holds the single-leaf pinyon canopy.

Photography and Dispersed Camping. Open viewsheds west across Spring Valley to the Schell Creek Range, dawn light on bristlecone pine on the crest, and aspen color in the Silver Creek drainage offer wide compositions. Dispersed camping is the only camping option, and water is reliable only at the named springs and along the perennial creeks.

Why the roadless character matters. Every activity here depends on the area's roadless condition. Mule deer and elk need the continuous habitat from sagebrush to subalpine; cold-water creeks and the four named springs cannot tolerate the sediment and culvert barriers that roads bring; and the experience of walking the Negro Creek or Big Canyon trail up to the wilderness boundary in country without engine noise is itself the recreation, available only because no road has been pushed through.