Unit 201, Nevada

Elevation ranges from approximately 5,000 ft in the lower Antelope Valley agricultural flats and Walker River riparian corridor to above 10,000 ft on the upper Sweetwater Mountains, which peak at Mount Patterson (11,654 ft, a volcano of uncertain age on the Nevada-California line). Terrain transitions sharply from irrigated valley floors through moderate sagebrush-covered foothills to steep, rugged alpine ridges with rock outcroppings and meadow basins. SR 338 (Sweetwater Summit, 6,812 ft) bisects the eastern edge of the unit.

Unit 201 is approximately 71% public land (BLM and Humboldt-Toiyabe National Forest). The BLM Carson City District manages a large share of the lower and mid-elevation portions. The upper Sweetwater Mountains lie within the Humboldt-Toiyabe National Forest (Bridgeport Ranger District). Key highway access: US-395 provides north-south connectivity west of the unit; NV-208 (Wilson Lane/Wellington Road) forms part of the northern boundary running west from Yerington toward Wellington and Smith Valley; NV-338 forms the eastern boundary, climbing over Sweetwater Summit (6,812 ft) between Wellington and the California border approximately 12 miles north of Bridgeport; NV-829 provides northern boundary access; NV-182 is the southern boundary. Interior roads are a network of improved gravel and rough 4WD two-tracks originating off these highways; four-wheel drive or high-clearance vehicles are recommended, especially for upper-elevation access. Wilson Canyon (along West Walker River, NV-208, ~13 miles west of Yerington) is a BLM multi-use staging area managed by the Carson City District, with OHV and horse access; overnight use is allowed with no fee and no designated campsites. Primitive dispersed camping is available throughout BLM portions. There are pockets of private ground primarily on irrigated valley floor. Services available in Wellington, NV and the Topaz Lake area.

Lower elevations (5,000–6,500 ft) support irrigated pasture and riparian willow-cottonwood along the Walker River, transitioning into big sagebrush flats. Mid-elevations (6,500–8,500 ft) are dominated by sagebrush-steppe with scattered pinyon-juniper woodland and bitterbrush. Upper slopes (8,500–10,000+ ft) carry mountain mahogany, aspen near water sources, open alpine meadows with short brush, and bare rocky ridgelines. The volcanic Sweetwater Mountains contribute diverse rocky habitat. Chukar partridge are noted as present in the rocky hillsides throughout the unit.

The Walker-Mono Interstate Mule Deer Herd (MA 20, managed cooperatively with California CDFW Zone X-12) uses Unit 201 as winter range; deer summer on the California Sierra Nevada and migrate east into Nevada during fall snowstorms, splitting into sub-herds as they descend toward traditional wintering areas. Key concentration areas include Wild Oat Mountain north of Topaz Lake, the foothills between Jack Wright Summit and the West Walker River (for deer moving toward the Pine Nut Range, Unit 291), and the east side of the Wellington Hills. NDOW notes that in mild winters deer may not fully migrate into Nevada. Mountain lions are present (Unit 201 falls in the West Population management zone). Black bears occur in the unit group (201/202/204/206) with occasional sightings; no bears were harvested from this group in 2023. Chukar partridge populations are noted in rocky hillside terrain throughout the unit. Desert bighorn sheep inhabit the adjacent East Walker River corridor in Unit 204, not Unit 201. The unit is managed cooperatively with CDFW due to the interstate deer herd dynamics.