Unit 101, Nevada

Steep, dramatic terrain centered on the East Humboldt Range, with Man on the Mountain Peak reaching approximately 11,300 feet — the unit high point. Lower basin elevations begin around 5,200 feet in the far western portions. The range rises sharply above the adjacent valley floors. The western and southern margins of the unit transition to rolling hills, benches, flats, and shallow swales typical of the Great Basin floor. Clover Valley occupies the southeastern low-elevation portion of the unit.

Unit 101 lies in NDOW Management Area 10 and is administered primarily by the BLM Elko District and the Humboldt-Toiyabe National Forest (Mountain City, Ruby Mountains, Jarbidge Ranger District). Public vehicle access is significantly limited by two factors: extensive private land in the lower foothills and valley benches surrounding the East Humboldt Range, and the 36,900-acre East Humboldt Wilderness (USFS) covering much of the range itself. The East Humboldt Wilderness is accessible on foot via the Lizzies Basin, Secret-Starr, Smith Lake, and Winchell Lake trailheads. The adjacent Ruby Mountains Wilderness (approximately 90,000 acres, primarily Unit 102) abuts Unit 101 boundaries and is accessible via trailheads including Lamoille Canyon. Primary vehicle approach routes: US Highway 93 serves the eastern side of the unit; Starr Valley Road and Dennis Flat Road access the western slopes; State Route 229 and North Ruby Valley Road serve the southern portions. USFS improved campgrounds include Angel Creek and Angel Lake (both in Unit 101; reservations at recreation.gov). Most East Humboldt Range hunting requires hiking or horseback travel. Ruby Lake National Wildlife Refuge, which lies partially within this unit group, is closed to big game hunting.

Lower elevations (roughly 5,200–7,500 ft) are dominated by big sagebrush with dense patches of bitterbrush and serviceberry. Mid-elevations support mountain mahogany, scattered aspen stands, and patches of pinyon-juniper, particularly dense in the southeastern portion of the range. Higher slopes and ridge systems support limber pine and high-alpine vegetation. Major canyon drainages including First through Fourth Boulder Creeks contain perennial streams, wet meadows, and riparian corridors. Clover Valley and the valley floor periphery support grassland and degraded shrubland; overutilization by feral horses is documented as an ongoing concern across lower-elevation habitats.

Mule deer are the primary big game species, with a large population that summers in the East Humboldt Range and migrates to winter ranges in Units 105, 107, and 109 to the south and east; NDOW has conducted radio-collar studies to document this migration corridor. Elk maintain a small, managed depredation population in unit group 101–103 (Ruby Mountains and East Humboldt); since 1999 NDOW has actively suppressed this herd through depredation hunts to prevent agricultural damage. Pronghorn antelope are present in Clover Valley and associated lower-elevation flats, typically near water sources and agricultural fields. Rocky Mountain bighorn sheep occur in Unit 101 but the herd suffered severe mortality from a pneumonia (Mycoplasma ovipneumoniae) outbreak in winter 2009–2010; the population has been slowly recovering and no hunting tags have been issued since 2009. Mountain goats occupy the high-alpine terrain of the East Humboldt Range; this herd has also been impacted by disease but showed improved recruitment in recent surveys. Mountain lions are present as a year-round apex predator. Himalayan snowcock were introduced into the Ruby Mountains between 1965 and 1979 and maintain the only established wild population outside Asia, occupying alpine terrain above the treeline. Chukar partridge and sage grouse are present in lower sagebrush and rocky slope habitats. Game fish species include Lahontan cutthroat trout in East Humboldt streams and lakes.