Mt. Jackson

The Mt. Jackson Inventoried Roadless Area covers 20,721 acres of high Great Basin terrain on the Bridgeport Ranger District of Humboldt-Toiyabe National Forest, straddling the California–Nevada line in the Sweetwater Mountains and Bodie Hills foothills. Mount Jackson rises above Huntoon Valley, Wedertz Flat, and Murphy Flat; Boone Canyon, Yaney Canyon, Walters Canyon, Water Canyon, Fryingpan Canyon, and Patterson Canyon cut the slopes. The area drains the Murphy Creek–East Walker River headwaters along with Long Valley Creek, Harvey Creek, Fryingpan Creek, Buckeye Creek, and Murphy Creek. This is country where the Sierra Nevada gives way to the Great Basin: sagebrush steppe, pinyon-juniper woodland, and aspen-fringed canyon bottoms replace the dense conifer forests of the western slope.

Cover changes sharply with elevation and substrate. The valley floors and lower benches carry Great Basin Big Sagebrush Steppe, Great Basin Big Sagebrush Shrubland, and Great Basin Dry Sagebrush Shrubland, with big sagebrush (Artemisia tridentata), antelope bitterbrush (Purshia tridentata), and rubber rabbitbrush (Ericameria nauseosa). Great Basin Pinyon-Juniper Woodland climbs the lower slopes with single-leaf piñon (Pinus monophylla) and Utah juniper (Juniperus osteosperma); Intermountain Mountain Mahogany Woodland and Intermountain Mountain Sagebrush Steppe take over upslope, with curl-leaf mountain-mahogany (Cercocarpus ledifolius) on rocky exposures. Above, Intermountain Aspen and Conifer Forest and Rocky Mountain Aspen Forest hold quaking aspen (Populus tremuloides), lodgepole pine (Pinus contorta), and Jeffrey pine (Pinus jeffreyi). At the highest reaches of Mt. Jackson, Great Basin Subalpine Bristlecone Pine Woodland and Rocky Mountain Dry Subalpine Spruce-Fir Forest fringe the crest. Subalpine grassland, alpine meadow, and small krummholz stands complete the gradient. The IUCN-vulnerable Pinyon Jay (Gymnorhinus cyanocephalus) is closely tied to the pinyon-juniper belt. Local plant endemics — Mono County phacelia (Phacelia monoensis), Bodie Hills cusickiella (Cusickiella quadricostata), Sweetwater Mountains draba (Draba incrassata), Mason's sky pilot (Polemonium chartaceum), and Mount Patterson senecio (Senecio pattersonensis) — hold in specific microhabitats.

Greater sage-grouse (Centrocercus urophasianus), federally proposed threatened, persist in the sagebrush steppe; the area falls within proposed critical habitat for the species. Mule deer (Odocoileus hemionus) and American black bear (Ursus americanus) range across the slopes; mountain cottontail (Sylvilagus nuttallii) and yellow-bellied marmot (Marmota flaviventris) hold in the talus and sagebrush. Sage thrasher (Oreoscoptes montanus) and Brewer's sparrow (Spizella breweri) are characteristic shrubsteppe birds. Pinyon Jay, sage grouse displays on the lekking grounds, broad-tailed hummingbird (Selasphorus platycercus), and Lewis's woodpecker (Melanerpes lewis) work the woodland edges. The Walker Lake-side basins draw migratory shorebirds — American avocet (Recurvirostra americana), willet (Tringa semipalmata), and Wilson's phalarope (Phalaropus tricolor) — though these stage primarily in the wet lowlands below the area. Lahontan cutthroat trout (Oncorhynchus clarkii henshawi), federally listed, and rainbow trout (Oncorhynchus mykiss) hold in the cold reaches of Buckeye Creek and the East Walker tributaries. The California floater (Anodonta californiensis), an IUCN-vulnerable mussel, lives in the lower stream reaches. Portions of this area fall within the potential range of several federally listed species; see the Conservation section for details.

A traveler crossing the Mt. Jackson country leaves the Bridgeport sagebrush flats and climbs through pinyon-juniper woodland into mountain mahogany on the lower slopes. Buckeye Creek and Fryingpan Creek drop east through aspen-lined canyons toward the East Walker River. Above 9,000 feet on Mount Jackson itself, bristlecone pine stands persist on the wind-scoured ridges, with Mount Patterson and the Sweetwater crest visible north across Huntoon Valley.

The Mt. Jackson Inventoried Roadless Area, a 20,721-acre tract within the Bridgeport Ranger District of Humboldt-Toiyabe National Forest, lies on the California–Nevada line at the headwaters of the East Walker River drainage in Mono and Lyon counties. Its history reflects long Northern Paiute (Numu) occupation of the East Walker country, the 1859 Mono Diggings and 1875–1881 Bodie boom that opened the surrounding ranges to mining, and the federal forest reserves consolidated into Humboldt-Toiyabe National Forest in 1957.

The Northern Paiute people — the "Numu" or "Numa" — held the East Walker River drainage as part of a much larger territory across what is now eastern California, Nevada, and southern Oregon. The Walker River Paiute Tribe, "more respectively and traditionally called the Agai Dicutta (Trout Eaters)... travelled, cared for, and survived off of for thousands of years" the land "located in the heart of the Great Basin" [1]. Walker Lake — "Agai Pahnunadu" — and its feeder river systems sustained these populations. After the 1849 California Gold Rush, settler pressure on Numu homelands grew rapidly: "In 1859, the area around Agai Pahnunadu (Walker Lake) was set aside for 'Indian purposes' but it was not until March 19, 1874, 15 years later, that President Ulysses Grant signed the executive order to formally establish the Walker River Indian Reservation" [1]. "These confined boundaries that we, as the Agai Dicutta Numu, were restricted to were defined in a successful attempt to open the rest of our territorial boundaries to settlement" [1]. The Bridgeport country south of the East Walker River was also seasonally used by Mono Lake Northern Paiute and by Washoe groups from the higher Sierra crest.

European-American settlement and mining drove the late-nineteenth-century transformation of these mountains. Bodie — twenty miles south of the Mt. Jackson country, in the Bodie Hills — became "a genuine California gold-mining ghost town" [2]. "The town is named for W.S. Body (or Bodey), who had discovered small amounts of gold in hills north of Mono Lake. In 1875, a mine cave-in revealed a rich vein of ore, which led to purchase of the mine by the Standard Company in 1877. People flocked to Bodie and transformed it from a town of a few dozen to a boomtown" [2]. From 1877 to 1882, Bodie was "a bustling town with close to 8,000 residents and produced more than $38 million in gold and silver." "In 1881, Bodie's 'bust' began and the town's population declined drastically" [2]; "mining officially ceased in Bodie in 1942" [2]. Across the East Walker River, the Aurora and Masonic camps drew miners through the same period. Cattle and sheep ranching from the Bridgeport Valley moved stock into the East Walker high country in summer; many of those drift routes still trace the area's slopes.

Federal protection came in stages. The Toiyabe National Forest was established March 2, 1907 by proclamation of President Theodore Roosevelt; the Humboldt National Forest followed in 1908. Mono National Forest, originally established in 1908 from parts of Inyo, Sierra, Stanislaus, and Tahoe forests east of the Sierra crest, was incorporated into the Toiyabe in 1945. The Humboldt and Toiyabe National Forests were administratively combined in 1957 into the present Humboldt-Toiyabe National Forest, "the largest national forest in the lower 48 states" at 6.3 million acres. The Mt. Jackson Inventoried Roadless Area is today protected under the 2001 Roadless Area Conservation Rule.

Vital Resources Protected

• Sage-Grouse and Sagebrush Steppe Integrity: The 20,721-acre roadless condition preserves an unbroken corridor of Great Basin Big Sagebrush Steppe, Great Basin Big Sagebrush Shrubland, and Great Basin Dry Sagebrush Shrubland that supports the proposed-threatened greater sage-grouse (Centrocercus urophasianus), with the area falling within proposed critical habitat. Sagebrush-obligate species — sage thrasher, Brewer's sparrow, mountain cottontail, and pronghorn that move through the Bridgeport landscape — depend on continuous, unfragmented shrubland cover. Sage-grouse leks are particularly sensitive to roads and human disturbance during the spring breeding season.

• Pinyon-Juniper and Bristlecone Refugium: The roadless state preserves an unbroken elevational gradient from Great Basin Pinyon-Juniper Woodland through Intermountain Mountain Mahogany Woodland and Intermountain Aspen and Conifer Forest up to the Great Basin Subalpine Bristlecone Pine Woodland on Mount Jackson. Pinyon Jay (Gymnorhinus cyanocephalus), an IUCN-vulnerable species in steep decline across the West, requires the continuous pinyon-juniper belt for its caching ecology. Bristlecone pine stands at the high crest serve as climate refugia for the oldest conifers on the continent.

• Cold-Water Headwater and Endemic Plant Habitat: Without roads, the Murphy Creek–East Walker River headwaters, Buckeye Creek, Fryingpan Creek, and Harvey Creek hold cold, gravel-bottomed reaches for native Lahontan cutthroat trout (Oncorhynchus clarkii henshawi) and the California floater mussel (Anodonta californiensis). Narrow microhabitats on the Sweetwater–Bodie volcanic substrate support narrow endemic plants — Mono County phacelia (Phacelia monoensis), Bodie Hills cusickiella (Cusickiella quadricostata), Sweetwater Mountains draba (Draba incrassata), Mason's sky pilot (Polemonium chartaceum), and Mount Patterson senecio (Senecio pattersonensis) — that occur nowhere else.

Potential Effects of Road Construction

• Disruption of Sage-Grouse Lekking and Migration: Road construction across the sagebrush steppe creates permanent disturbance corridors that displace greater sage-grouse from their leks during breeding, fragment seasonal migration between summer and winter range, and open the country to invasive cheatgrass (Bromus tectorum). Cheatgrass-driven fire cycles convert sagebrush to annual grassland, eliminating the cover and forbs the species requires; this conversion is one of the dominant causes of sage-grouse population decline across the Great Basin.

• Fragmentation of Pinyon-Juniper and Bristlecone Habitat: Road construction across the pinyon-juniper belt fragments the continuous canopy that Pinyon Jay caching behavior requires; declining caching habitat is closely linked to Pinyon Jay population collapse. Road cuts on the higher slopes near Mount Jackson would damage soils and root systems in the slow-growing bristlecone pine stands and the narrow-endemic plant communities of the Sweetwater–Bodie volcanic substrate, which take centuries to recover.

• Sedimentation of Cold-Water Streams: Cut slopes and fill embankments along new road grades shed fine sediment downhill with every storm, embedding gravel beds in Buckeye Creek, Fryingpan Creek, and the East Walker River with silt. That sediment suffocates aquatic insect communities and seals the interstitial spaces that Lahontan cutthroat trout require for spawning, and it degrades habitat for the California floater mussel downstream. In the arid Great Basin, vegetation recovery after road disturbance is slow, and erosion can continue for decades after the initial cut.

The 20,721-acre Mt. Jackson Inventoried Roadless Area straddles the California–Nevada line on the Bridgeport Ranger District of Humboldt-Toiyabe National Forest, in the Sweetwater Mountains and Bodie Hills foothills above the Bridgeport Valley. The country rises from sagebrush steppe through pinyon-juniper woodland and mountain mahogany to bristlecone pine on Mount Jackson and Mount Patterson. Access is foot and stock on documented trails; the area carries no developed trailheads or campgrounds within its boundary.

Hiking and stock travel. The trail network is sparse and primitive — characteristic of Great Basin backcountry. The Mt. Patterson Trail (22553), 5.9 miles, is the longest line, climbing toward the high crest. The Mount Jackson Route (22012), 4.3 miles, is the documented hiker route to the area's namesake summit. Shorter routes include Yaney Canyon (22492), 1.5 miles; Star City (22389), 1.0 miles; Gaging Station (22396), 1.0 miles; Murphy Drainage (22391), 0.5 miles; Murphy Cutoff (22392), 0.5 miles; and Star Creek (22390), 0.1 miles. All trails are on native material with no maintained signage. Cross-country travel is common across the open sagebrush and woodland country, particularly for hunting and birding.

Camping and base access. No developed campground sits within the area. Buckeye Campground, just outside the area boundary along Buckeye Creek, is the standard base for trips into the Mt. Jackson country; it provides developed sites with creek access. Dispersed backcountry camping is allowed on Humboldt-Toiyabe NF lands following standard Forest Service rules; check current motorized-use and fire restrictions before camping.

Fishing. The cold reaches of Buckeye Creek, Fryingpan Creek, and the upper East Walker River carry rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta), and the federally listed Lahontan cutthroat trout (Oncorhynchus clarkii henshawi). Lahontan cutthroat is the only trout native to this drainage; specific stream sections are managed for native cutthroat recovery and may have catch-and-release or closure rules. A valid California or Nevada fishing license is required depending on which side of the state line you fish; check current California Department of Fish and Wildlife and Nevada Department of Wildlife regulations.

Hunting. Big-game habitat includes mule deer (Odocoileus hemionus) across the country, American black bear (Ursus americanus), and pronghorn that move through the Bridgeport Valley. Greater sage-grouse (Centrocercus urophasianus), federally proposed threatened, may have hunting closures or specific quotas — verify current regulations. Mountain quail (Oreortyx pictus), sooty grouse (Dendragapus fuliginosus), and mourning dove (Zenaida macroura) occupy the upland country. Note that hunting regulations differ between California and Nevada portions of the area; check the applicable state's regulations carefully.

Birding and photography. Sixteen eBird hotspots near the area frame what birders can expect, with Bridgeport Reservoir (227 species, 727 checklists) the most active in the state — among the highest hotspot diversity in the eastern Sierra. Bridgeport Reservoir east shore (185), boat ramp (184), and Bridgeport downtown (165) follow; Bodie Hills (84 species) and Buckeye Campground (98) sit at the area's edges. Inside the country, Pinyon Jay (Gymnorhinus cyanocephalus) is a signature target — vulnerable on the IUCN list and declining across its range — along with sage thrasher, Brewer's sparrow, broad-tailed hummingbird, Lewis's woodpecker, and sage grouse displays in spring. The Bridgeport Valley wetlands draw migratory shorebirds in spring and fall — American avocet, willet, Wilson's phalarope, and white-faced ibis. Mount Jackson and Mount Patterson, the Sweetwater crest, the bristlecone pine stands, and the Bodie Hills volcanic country are productive landscape photography sites; Bodie ghost town twenty miles south is the regional historical photography destination.

Why the roadless condition matters here. Trail-only access through the Mt. Jackson country, the cold-water Lahontan cutthroat fishery, the deer and sage-grouse hunts, and the Pinyon Jay caching habitat all depend on the absence of new road construction across these slopes. Road building would fragment sage-grouse breeding range and open the sagebrush to cheatgrass-driven fire that has devastated similar country across the Great Basin — replacing the foot-and-stock backcountry experience these mountains support with mechanized access these conditions cannot survive.