Zone X5a, California

X5a sits on the high-desert / Modoc Plateau country of Lassen County, taking in the Honey Lake basin and the Eagle Lake area near Susanville. HuntScore characterizes the public lands as somewhat steep overall and notes highly variable weather requiring preparation. Specific elevation ranges and exact slope-gradient figures were not found in an authoritative source.

Zone X5a is bounded on the east by U.S. Highway 395, on the north by the Termo-Grasshopper Road (connecting Termo on Hwy 139 to Hwy 395), on the west by State Highway 139, and on the south by Conservation Center Road (Lassen County Road A-27) and Willow Creek — the official legal boundary under Cal. Code Regs. Title 14, Section 360(b)(6)(A). The primary entry corridors are Hwy 395 (from Susanville north through Litchfield toward Ravendale) and Hwy 139 (north from Susanville toward Eagle Lake and Termo), with numerous county, Forest Service, and BLM roads — including Horse Lake Road (~15 miles north of Susanville), Grasshopper-Termo Road, Patch Road, and Skedaddle Ranch Road — branching off to reach interior public lands. Public land within the zone is managed by the Lassen National Forest (Eagle Lake Ranger District, headquartered at 477-050 Eagle Lake Road, Susanville), the BLM Eagle Lake Field Office (2550 Riverside Drive, Susanville, managing roughly 1.2 million acres including the 62,000-acre Skedaddle Wilderness Study Area where motorized travel is limited to designated routes), the Willow Creek Wildlife Area (accessed 16 miles north of Susanville on Hwy 139, with a required hunter check-in at the Meadow Canal parking area), and the Biscar Wildlife Area (undeveloped, reached by driving Hwy 395 north from Susanville approximately 35 miles, then west on Karlo Road for roughly 20 miles). Staging and camping options include the BLM North Eagle Lake Campground and the Forest Service Christi, Merrill, Aspen, and Eagle campgrounds off Eagle Lake County Road A-1 (turn west off Hwy 139 approximately 30 miles north of Susanville), plus BLM dispersed camping on open lands outside fire-season restrictions. Secondary roads throughout the zone are dirt and often require high-clearance or four-wheel drive — particularly after storms — and the BLM and USFS Motor Vehicle Use Maps govern which routes are legally open; hunters should carry a shovel, full spare, and extra fuel and water. The zone is a mix of public and private land; written landowner permission is required to access private parcels.

Sagebrush flats and high-desert shrub habitat dominate the open country, with hunters on the HuntTalk forum describing the common tactic of walking sagebrush to kick deer up. Forested public land is present where the zone overlaps Lassen National Forest and Modoc National Forest. Detailed cover-type breakdowns were not found in an authoritative source.

These are mule deer of northeastern California's Modoc Plateau region. HuntScore characterizes the X5a herd as low-density. Migration in this region is generally elevation-driven, with deer moving from high-country summer range to lower winter range as snow arrives, consistent with broader Modoc Plateau mule deer ecology; X5a-specific migration corridors were not documented in a fetched source.