Steens Mtn, Oregon

Steens Mountain is a fault-block range tilted gently westward with an abrupt eastern escarpment that drops over 5,000 feet to the Alvord Desert playa (4,200 ft). The summit reaches 9,733 feet. The western slopes are dissected by massive U-shaped glacial gorges — Kiger, Big Indian, Little Indian, Little Blitzen, and Wildhorse Canyon — carved to nearly half a mile deep. The lower unit extends onto basin flats, desert playas, and the northern fringes of the Catlow and Alvord valleys. Elevation ranges from roughly 4,200 feet on the desert floor to 9,733 feet at the summit.

Primary access is via Oregon Highway 205 south from Burns (60 miles) to Frenchglen, the closest community. From Frenchglen, the Steens Mountain Loop Road (Steens Mountain Backcountry Byway) — a 52-mile gravel route — provides the main access to the mountain, climbing from Page Springs Campground (4,200 ft) through Fish Lake (7,400 ft) and Jackman Park (7,800 ft) to the East Rim at approximately 9,700 feet. Most of the Loop Road accommodates passenger vehicles at low speed; the southern portion near South Steens Campground requires high-clearance 4WD. The southern end of the unit is served by a county road through Andrews to the community of Fields (Hwy 78 to Fields junction). Unit boundary: Hwy 78 (northeast, Burns to Follyfarm), county road through Andrews to Fields, northwest via county road to Frenchglen, north on Hwy 205 back to Burns. The 170,000-acre Steens Mountain Wilderness (designated 2000) occupies the core of the unit; all motorized and mechanized equipment — including mountain bikes, ATVs, game carts, and chain saws — is prohibited within the wilderness. The broader Steens Mountain Cooperative Management and Protection Area (CMPA) covers approximately 500,000 acres of public and private land; within the CMPA, off-road vehicle travel is prohibited and all travel must stay on designated open routes. Key trailheads include Page Springs, South Steens, Wildhorse Overlook, and Pike Creek. Malheur NWR (187,757 acres near Frenchglen) is excluded from most controlled hunts; a 40-acre BLM shooting closure exists adjacent to Frenchglen. ODFW Hines office: 541-573-6582. BLM Burns District: 541-573-4400.

Vegetation is strongly zonal by elevation. Lower bajadas and basin floors support Great Basin sagebrush-steppe (big sagebrush, Wyoming sagebrush) and desert bunchgrasses. Western juniper woodlands occupy mid-slope benches. Mountain big sagebrush transitions at mid-elevation into mountain mahogany (Cercocarpus) thickets on rocky slopes — prime mule deer and bighorn habitat. Quaking aspen groves occur in sheltered drainages at mid-to-upper elevations. Above that, subalpine meadows and grasslands grade to rocky subalpine terrain. The Donner und Blitzen (Blitzen) River drainage on the western slope supports riparian willows and sedges. The unit contains several endemic plant species (Steens paintbrush, Steens Mountain penstemon, Steens Mountain thistle). ODFW and BLM have removed several thousand acres of encroaching western juniper and reseeded for native shrubs and grasses since 2015 under the Mule Deer Initiative.

Mule deer are the most abundant big game species; the Steens Mountain herd numbers approximately 3,710 animals (ODFW 2023) and undertakes seasonal migrations between mountain summer range and lower desert winter range. Rocky Mountain elk use the unit at lower density typical of the high desert — the unit is part of the High Desert elk zone (hunts 278A1/A2/M/T) along with units 66 (south of US-20), 67, 68, 70, 71, and 73. California bighorn sheep inhabit the cliffs and rocky escarpments of the Steens, particularly the eastern face and major gorge walls; Oregon's California bighorn population is estimated at approximately 3,700 animals across 32 herds statewide, with Steens among the most significant populations. Pronghorn antelope use the lower sagebrush-steppe portions of the unit. Black bears are present in sufficient numbers to support both a spring controlled hunt and a general fall season. Mountain lions (cougar) are resident throughout the unit, following mule deer migrations. Kiger mustang herds occupy portions of the CMPA. Non-game wildlife includes sage grouse, chukar, California quail, Great Basin redband trout (Donner und Blitzen River), and extensive raptor populations. Malheur NWR adjacent to the unit supports waterfowl and shorebirds.