Zone B5, California

Per CDFW, Zone B-5 covers a large geographic area where the terrain can be very steep and rugged. Deer range from lower elevations up to summer range in the high country around the Yolla Bolly-Middle Eel Wilderness Area; they move to higher elevations in late spring and drop below the snow line after the first heavy fall storms. Weather is highly variable but usually hot to mild, with early storms not uncommon and snowfall rare; heavy rains can make many roads difficult or impossible to travel. CDFW does not publish specific elevation figures in the zone sheet.

Zone B-5 spans roughly 24% public land spread across three national forests and BLM. The primary vehicle corridors into the zone are Interstate 5 (eastern boundary, with exits toward the Yolla Bolly Range near Red Bluff and Corning), State Highway 36 (the main east-west spine, running from Red Bluff through Platina toward Hayfork), and State Highway 162 (Willows west through Elk Creek to Covelo, the main entry to the western interior). Highway 299 forms the northern boundary. The Mendocino National Forest—administered by the Covelo Ranger District (Covelo) and Grindstone Ranger District (Willows)—covers the bulk of western B-5 public land; access from Covelo runs north on the M1 road toward Indian Dick Station, reaching the Foster Glade, Georges Valley, Rock Cabin, and Soldier Ridge trailheads. The M2 and M22 roads provide access to the Ides Cove Backpacker and Horsepacker trailheads on the wilderness boundary. From the east, the Yolla Bolly Ranger District of Shasta-Trinity National Forest (station at 2555 State Highway 36, Platina) is the primary contact; Forest Road 30 (Wild Mad Road) departs Highway 36 south of Wildwood/Platina, and Forest Road 35 (Little Black Rock Road) branches off FR-30 to reach the Stuart Gap Trailhead—FR-35 is a narrow, sometimes one-lane paved road and FR-30 connects to it after roughly 8.8 miles. The Yolla Bolly-Middle Eel Wilderness occupies the core high country and is closed to motorized vehicles; all access inside is foot or pack stock only (no day-use permit currently required, though contact the managing ranger district before travel). The BLM Redding Field Office administers scattered parcels along the eastern margin. Roads throughout B-5 are characteristically curvy, narrow, and shared with logging trucks; many USFS and BLM roads become impassable with mud or snow after fall storms, so high-clearance vehicles are strongly recommended for backcountry routes and a Motor Vehicle Use Map from the relevant ranger district is essential. The Private Lands Management (PLM) program may offer additional access on enrolled private parcels.

CDFW describes vegetation as highly varied and often extremely dense, ranging from mixed chaparral, oak-woodland, hardwood, and hardwood-conifer to dense conifer habitats. Deer respond favorably to vegetation disturbances that enhance brush species (wildfire and timber harvesting). Productive cover includes riparian areas, recently burned areas or re-sprouted clear cuts, acorn-producing oaks, and high-country brush stands such as manzanita, snowbrush, and Sierra chinkapin. Lower deer densities occur in more densely forested areas and in older, more decadent brushlands.

The subspecies is Columbian black-tailed deer. CDFW classifies B-5 deer as generally resident animals whose movement is up and down the slopes rather than long seasonal migrations: they move to higher elevations in late spring, staying on summer range around the Yolla Bolly-Middle Eel Wilderness Area until the first heavy fall storms force them down below the snow line, often during the hunting season. HuntScore reports the rut can start as early as late October and run through late December. CDFW describes the population as stable to slightly declining and considerably below late-1960s/1970s levels, a long-term decline tied to land-management practices that precluded fire and matured the habitat.