Interstate, Oregon

Elevation ranges from approximately 4,200 to 8,400 feet. The landscape is a mosaic of broad, flat valleys and river bottoms (Sprague River, Sycan River, Gerber Reservoir area), volcanic rimrock benches, sagebrush-covered foothills, and forested mountains. The Gearhart Mountain Wilderness — at 22,684 acres with its high point of 8,364 ft — sits in the north-central portion and represents the unit's most rugged, roadless terrain, though it was heavily impacted by the 2021 Bootleg Fire (91%+ tree mortality in large segments). Most of the unit lies between 4,000 and 7,000 feet.

Highway 140 forms the unit's northern boundary through Beatty and Bly and is the primary east-west access corridor. The unit is administered by the Fremont-Winema National Forest (Bly and Lakeview Ranger Districts) and the Lakeview BLM District. Approximately 56 percent of the unit is public land. Numerous Forest Service and BLM roads serve the interior, though many require high-clearance or four-wheel-drive vehicles and tire chains in fall. The Gearhart Mountain Wilderness in the north-central unit is the primary roadless area and requires foot or horse travel. The Gerber Reservoir area in the south (straddling units 32, 33, and 75) provides additional access via East Langell Valley Road — that sub-area is 47% public land. Pronghorn habitat in the eastern portion (E Interstate, east of the Klamath-Lake County line) is 60% public land but pronghorn exist primarily on private land — trespass permission is essential. ODFW Klamath office: 541-883-5732.

Primary cover types are ponderosa pine and juniper forest with openings created by past fires and timber harvest. Higher elevations support mixed-conifer stands including white fir, lodgepole pine, and some Douglas-fir. Lower slopes and valley floors transition to sagebrush-steppe, bunchgrass, and fescue grasslands with bitterbrush. Riparian corridors along the Sprague and Sycan rivers support willows, aspens, and cottonwoods. Wet meadows and marsh edges around Sycan Marsh and Gerber Reservoir contain bulrushes, cattails, and sedges. The unit sits east of the Cascade crest and is characteristic of the interior ponderosa-juniper-sagebrush zone.

The Interstate unit supports mule deer, Rocky Mountain elk, pronghorn antelope, California bighorn sheep, black bear, and cougar. Mule deer inhabit sagebrush-steppe and forest-edge habitats throughout the unit, using lower elevations in winter and moving to higher forested zones in summer. Rocky Mountain elk are present but at low densities — public-land elk largely occupy thick timber and much observed elk activity is concentrated on private lands. Pronghorn antelope are found primarily in the open sagebrush flats of the eastern portion of the unit, particularly east of the Klamath-Lake County line and in the Gerber Reservoir area to the south, though they rely heavily on private rangelands. California bighorn sheep occupy rocky rimrock and canyon terrain within the unit and adjacent parts of units 71 and 73; these populations are managed conservatively with very few tags. Black bears are resident throughout the timbered portions. Cougars range widely across the unit following deer populations.

1. ROCKY MOUNTAIN GOAT: ODFW unit page lists a 900-series hunt code for this unit, but no goat hunt descriptions in eRegulations or the Drawn West 2026 guide confirm an active unit 75 goat hunt (all confirmed goat hunts are in Wallowa, Elkhorn, Strawberry, and Wenaha areas). Goat excluded from species list pending official confirmation. 2. ELK SUCCESS RATE: The 4% figure is a rough midpoint derived from Rokslide forum reports (multi-year range cited as 2–8%); treat as low-confidence. Tag quota of 330 bulls (220 + 110) is confirmed from eRegulations 2026 data. 3. PRONGHORN SUCCESS: The 28% success rate from Drawn West applies to archery hunters specifically (475R1), not rifle. 4. DEER 2026 RESTRUCTURING: The former Interstate Unit 75 deer hunts are now organized under KB101/KB101R (Klamath Basin Hunt Area 01). KB101 tags (990) and KB101R tags (281) may cover a broader area than former WMU 75 alone — hunters should verify exact boundaries. 5. BOOTLEG FIRE: The 2021 Bootleg Fire severely impacted the Gearhart Mountain Wilderness with 91%+ tree mortality in large segments. 6. PRIVATE LAND: Pronghorn 475A/475R1 hunt description explicitly states pronghorn exist primarily on private land in the E Interstate area. Gerber Reservoir area (475R2/475M/475T) is only 47% public land.