Hellsgate

The Hellsgate Roadless Area covers 6,171 acres in the Tonto National Forest of Arizona, positioned where the Mogollon Rim country drops sharply into the Tonto Basin. The area takes its name from the narrow gorge where Tonto Creek enters Big Canyon, pinching between sheer rock walls that made the passage nearly impassable to early travelers. Green Valley Hills, Blue Dog Ridge, Goswick Canyon, Brush Corral Canyon, Salt Lick Canyon, and Derrick Canyon define the rugged interior. Tonto Creek is the primary drainage, fed by Spring Creek, Green Valley Creek, and Haigler Creek along with numerous unnamed tributaries that gather water from the canyon walls. This watershed carries runoff from the Mogollon Rim south toward Roosevelt Lake, and the creek's perennial flow through the canyon bottom creates a riparian corridor that stands in sharp contrast to the surrounding dry slopes.

Vegetation shifts dramatically with elevation and aspect across this montane landscape. The canyon bottom and shaded north-facing slopes support Warm Desert Mountain Streamside Woodland, where Wright's sycamore (Platanus wrightii), Arizona alder (Alnus oblongifolia), and Arizona black walnut (Juglans major) line the creek banks. Moving upslope, Arizona Plateau Chaparral transitions into Sky Island Oak Woodland and Sky Island Pinyon-Juniper Woodland. Emory's oak (Quercus emoryi), shrub live oak (Quercus turbinella), and Arizona oak (Quercus arizonica) form the woodland canopy at mid-elevations, with alligator juniper (Juniperus deppeana) and Arizona singleleaf pinyon (Pinus × kohae) on drier ridges. The upper portions of the area reach into Sky Island Pine-Oak Forest and Southern Rockies Ponderosa Pine Woodland, where southwestern ponderosa pine (Pinus brachyptera) overtops a diverse understory including New Mexico locust (Robinia neomexicana), Wright's silktassel (Garrya wrightii), and Fendler's whitethorn (Ceanothus fendleri). Parry's agave (Agave parryi) and sacahuista bear-grass (Nolina microcarpa) mark the transition zones between forest types.

The creek corridor supports the richest concentration of wildlife. Mule deer (Odocoileus hemionus) and white-tailed deer both use the riparian zones for water and browse, while American black bear (Ursus americanus) range across the full elevational gradient. White-nosed coati (Nasua narica) forage along the lower drainages. The mixed oak and pine forest supports a diverse avian community: acorn woodpecker (Melanerpes formicivorus) cache mast in ponderosa snags, while painted redstart (Myioborus pictus) and red-faced warbler (Cardellina rubrifrons) hunt insects in the oak and pine canopy. Broad-tailed hummingbird (Selasphorus platycercus) works golden columbine (Aquilegia chrysantha) and hummingbird-trumpet (Epilobium canum) blooms along canyon seeps. Townsend's big-eared bat (Corynorhinus townsendii), listed as Vulnerable on the IUCN Red List, uses the canyon's rocky overhangs for roosting. Gila trout (Oncorhynchus gilae), IUCN Endangered, occupies reaches of the creek that retain suitable cold-water conditions. Portions of this area fall within the potential range of several federally listed species; see the Conservation section for details.

Traveling the Hellsgate Trail from the Bear Flat trailhead, a hiker moves through a rapid ecological sequence. The trail descends from ponderosa pine woodland through shrubby chaparral, crosses side drainages where Wright's sycamore and Arizona alder signal the presence of water, and eventually reaches the canyon floor where Tonto Creek runs between walls too close to walk abreast. The sound of the creek is audible well before the water comes into view. Above the gorge, Blue Dog Ridge offers open pinyon-juniper savanna with long sightlines east toward the Sierra Ancha. The contrast between the tight, shadowed canyon and the open ridgeline above it captures the defining character of the Hellsgate landscape: abrupt transitions between desert scrub, riparian corridors, and montane forest compressed into a compact but topographically complex roadless tract.

Long before the canyon country along upper Tonto Creek bore any Anglo name, it formed part of a landscape shaped by thousands of years of human occupation. Archaeological investigations in the broader Tonto Basin document an indigenous ceramic-using population as early as A.D. 100, likely descended from Late Archaic groups who had inhabited the region for millennia before them. Around A.D. 750, Hohokam migrants from the Gila River area established permanent settlements, and over the following centuries the basin developed into a dynamic cultural crossroads. By the Classic period (ca. A.D. 1150–1450), the Salado cultural tradition—understood today as a widespread ideological system rather than a single ethnic group—had drawn together communities building platform mounds and pueblo room blocks across the Tonto Basin. Most sites were abandoned by approximately A.D. 1325–1450, for reasons archaeologists associate with environmental stress, conflict, and population aggregation.

The Yavapai and Western Apache (Tonto Apache) were the peoples who held the Tonto Basin at the time of Anglo contact. Both groups lived as nomadic hunters and gatherers whose creation traditions trace origins to Montezuma Well. Their languages were entirely distinct, yet their histories intertwined through shared struggles. Spanish and Mexican intrusion into this remote canyon country remained minimal until the 1860s, when gold discoveries near Prescott in 1863 opened the floodgates. Prospectors pushed into the basin with little regard for Yavapai and Apache territorial claims. Camp Reno, established near Tonto Creek in 1867, brought U.S. Army troops to the region. General George Crook's Tonto War (1872–1873) systematically dismantled Yavapai and Tonto Apache resistance through a campaign that used Apache scouts and destroyed encampments one by one. In February–March 1875, some 1,450 Yavapai and Tonto Apaches were forced on a 150-mile march to the San Carlos Reservation—an event remembered as the Exodus, during which at least 100 people died. Tonto Apaches would not gain a formal reservation near their ancestral homeland until 1972, when 85 acres adjacent to Payson were set aside—still the smallest reservation in Arizona.

Anglo ranchers moved into the basin almost immediately after the Apache were subdued. According to accounts recorded by Forest Ranger Fred Croxen in 1926, the first cattle reached Tonto Creek in 1876, driven from California. By 1882, outfits from California, Oregon, Utah, Texas, and New Mexico had stocked ranges along Tonto Creek and its tributaries, including the drainages near what would become the Hellsgate area. The first sawmill in the Payson area was hauled in around 1879–1880. Mining activity on nearby Weber and Spring Creeks brought additional settlers in 1883. Within two decades, the ranges were catastrophically overstocked; Croxen's informants recalled roundups of 2,000 cattle in a single day where 150 was considered a good count by 1926. The drought of 1904 killed livestock across depleted ranges and effectively ended the era of unrestricted open grazing.

On October 3, 1905, President Theodore Roosevelt signed Proclamation 598, establishing the Tonto Forest Reserve under authority of the Forest Reserve Act of 1891. The reserve encompassed lands across the Mogollon Rim and Tonto Basin, including the rugged canyon country through which Tonto Creek descends—later named Hellsgate for the sheer, impassable walls that pinch the creek into a narrow slot. Federal administration imposed grazing permits, ended the sheep-versus-cattle range wars that had produced armed standoffs, and set the stage for a managed rather than exploitative relationship with the land. The Hellsgate Roadless Area, designated within the Tonto National Forest, preserves the core of this canyon where the creek drops through a gorge essentially unchanged from the landscape that Crook's troops, Apache bands, and the first Anglo cattle outfits each crossed in the late nineteenth century.

Vital Resources Protected

• Cold-Water Stream and Aquatic Corridor Integrity: Tonto Creek and its tributaries—Spring Creek, Green Valley Creek, and Haigler Creek—flow through a roadless landscape where cut slopes, stream crossings, and surface disturbance have never been introduced at scale. The absence of road infrastructure preserves fine sediment levels in the streambed, allowing the coarse-gravel substrates that Gila trout (Oncorhynchus gilae), assessed as Endangered on the IUCN Red List, and spikedace (Meda fulgida) depend on for spawning and foraging. The continuous riparian corridor along Tonto Creek's Big Canyon segment also maintains the narrow-headed gartersnake (Thamnophis rufipunctatus) critical habitat designation that covers portions of these drainages.

• Unfragmented Pinyon-Juniper and Oak Woodland Canopy: Sky Island Pinyon-Juniper Woodland covers roughly 70 percent of the Hellsgate area, and Sky Island Oak Woodland an additional 14 percent. In the roadless condition, these woodlands retain the closed-canopy structure and accumulation of mast-producing trees that support interior-dependent species—including Mexican spotted owl (Strix occidentalis lucida) and Pinyon jay (Gymnorhinus cyanocephalus). The same fire-regime disruptions documented across this system type (livestock grazing reducing fine fuels, altered fire frequency increasing woody density) have already affected portions of the broader landscape; the roadless core limits the additional edge-effect and fragmentation that road corridors introduce.

• Riparian Function in Warm Desert Mountain Streamside Woodland: The canyon-bottom woodland along Tonto Creek represents a small but ecologically disproportionate fraction of the landscape. This Warm Desert Mountain Streamside Woodland is among the most threatened ecological system types in the region, facing documented stressors including stream dewatering, exotic species invasion, and cutting of woody vegetation. The roadless condition protects the riparian buffer from road-associated drainage modifications, channelization, and the tamarisk and Russian olive invasion that typically follows stream-crossing disturbance. Southwestern willow flycatcher (Empidonax traillii extimus) and yellow-billed cuckoo (Coccyzus americanus) use this corridor type for nesting habitat.

Potential Effects of Road Construction

• Sedimentation and Thermal Loading in Stream Habitat: Road construction through the steep canyon walls of Hellsgate would require cut-and-fill earthwork that exposes mineral soil to erosion. Sediment mobilized from road surfaces and cut slopes enters stream channels during rain events, filling the interstitial gravel spaces that native fish use for spawning and invertebrate production—the base of the aquatic food web. Increased canopy opening along road corridors also raises stream temperatures, narrowing the thermal envelope available to cold-water-dependent fish already stressed by drought conditions documented as a pervasive threat at the landscape scale.

• Habitat Fragmentation in Interior Pinyon-Juniper Woodland: Road corridors through Sky Island Pinyon-Juniper Woodland convert interior forest habitat to edge habitat along both sides of the cleared right-of-way. Species sensitive to edge effects—including Mexican spotted owl, which requires large patches of structurally complex woodland for foraging and nesting—experience reduced usable habitat beyond what the cleared corridor itself removes. Roads also facilitate the movement of invasive plant species into previously intact stands; once established, invasive annual grasses alter fire behavior in pinyon-juniper by creating continuous fine fuel loads that carry high-severity fire into a woodland type that historically burned at long intervals.

• Disruption of Riparian Hydrology and Exotic Species Entry: Stream crossings required by road construction alter local hydrology by modifying channel geometry, grade, and sediment transport downstream of culverts and bridges. In canyon settings like Tonto Creek's Big Canyon, undersized crossings create barriers to aquatic passage and concentrate flow in ways that accelerate bank erosion. Disturbed stream margins created by road grading provide colonization sites for tamarisk and Russian olive—both of which are documented threats to Warm Desert Mountain Streamside Woodland—displacing the native cottonwood-willow-sycamore community structure that riparian-dependent birds and reptiles depend on.

Hiking

The primary maintained access into the Hellsgate Roadless Area is Hell's Gate Trail 37, a 4.2-mile hiker-only route beginning at the Hellsgate Trailhead. The trail descends through Sky Island Pinyon-Juniper Woodland and Arizona Plateau Chaparral, crossing side drainages before dropping to Tonto Creek and the narrow gorge—the "gate"—where Big Canyon walls close to a few feet apart. The route is rated strenuous due to elevation change and rough footing in the canyon bottom. Additional unmaintained routes access Blue Dog Ridge and Goswick Canyon, extending opportunities for experienced cross-country travelers on the roadless interior. Several connecting trails—including Pocket Trail 38, Bear Flat Trail 178, and Mescal Ridge Trail 186—approach the area from adjacent trailheads, allowing loop options for multi-day trips.

Camping

Three campgrounds serve as base camps for the Hellsgate area: Ponderosa Campground, Ponderosa Group Camp, and Haigler Canyon Campground, all within the Payson Ranger District. These developed sites, located outside the roadless boundary, provide vehicle access and basic facilities. Within the roadless area itself, dispersed camping is practiced along the creek and in the canyon bottom; no developed facilities exist inside the boundary.

Fishing

Tonto Creek and its tributaries provide fishing opportunities within and adjacent to the roadless area. Rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta) are present in the creek, along with Gila trout (Oncorhynchus gilae) in portions of the drainage. The Tonto Creek Fish Hatchery, located approximately 7 miles downstream, supports fish populations in the watershed. Anglers accessing the creek through the roadless area must travel on foot via Trail 37 or the Pocket Trail system; the absence of road access limits pressure on the upper reaches.

Wildlife Viewing and Birding

The area lies within a regionally productive birding corridor. Fifteen eBird hotspots within 24 kilometers of the roadless boundary have recorded a combined range of species up to 211 at the most active site (Payson–Green Valley Park). Within the Sky Island Pine-Oak Forest and ponderosa woodland along the canyon rim, confirmed species include painted redstart (Myioborus pictus), olive warbler (Peucedramus taeniatus), red-faced warbler (Cardellina rubrifrons), acorn woodpecker (Melanerpes formicivorus), and mountain chickadee (Poecile gambeli). The canyon bottom and riparian zones attract yellow-rumped warbler (Setophaga coronata), black-headed grosbeak (Pheucticus melanocephalus), and Anna's hummingbird (Calypte anna). Larger mammals observed in the roadless area include mule deer (Odocoileus hemionus), white-tailed deer (Odocoileus virginianus), wapiti (Cervus canadensis), American black bear (Ursus americanus), and white-nosed coati (Nasua narica). The canyon's rocky walls support Arizona black rattlesnake (Crotalus cerberus), canyon tree frog (Dryophytes arenicolor), and Arizona tree frog (Dryophytes wrightorum) in the wetter reaches near water.

Hunting

The Hellsgate Roadless Area lies within Tonto National Forest hunting units open to deer, elk (wapiti), black bear, and other game under Arizona Game and Fish Department regulations. The roadless condition provides foot-access-only hunting through terrain that rewards hunters willing to travel beyond vehicle-accessible areas. Deer hunting draws consistent use; elk are present in the higher-elevation ponderosa pine sections along the Mogollon Rim edge above the canyon.

Roadless Character and Recreation Quality

The recreation value of Hellsgate is directly tied to its roadless condition. Hell's Gate Trail 37 offers a hiker-only experience that road construction along the canyon corridor would eliminate or fundamentally alter. The creek fishing in the upper reaches depends on minimal sediment loading and reduced pressure—both conditions maintained by the absence of road access. Birding and wildlife observation in the interior pinyon-juniper and pine-oak zones benefit from interior-forest conditions that roads fragment. The near-vertical canyon walls and perennial stream that make the gorge a destination for hikers are the same features that make road construction through the drainage physically impractical; the roadless boundary preserves that character by default and by design.